ies HRC ser - LUFT.LV

0108

-618

0511

-rev

.0

SELECTION, INSTALLATION, USE

AND MAINTENANCE MANUALI

HRC seriesHigh efficiency heat recovery unit

GB

Index Engl

ish

Declaration of conformity 4

General standards 5

SELECTION MANUAL 6

Description of the unit 6

Unit choice and configuration 7

Air flow-rate range 9

Description of main components 10

Equipment 10

Accessories 11

Compatibility of accessories 13

Electronic Regulation 15

Nominal technical data 16

Total electrical data 18

Performance variations: 18

- Heat recovery unit: winter running 18

- Heat recovery unit: summer running 20

- Electric heating coil 21

- Water integration coils 22

- Direct expansion integration coils 30

- Filters 37

- Fan electric input 38

Operating limits 40

Sound pressure level, dB(A) 40

INSTALLATION, USE AND MAINTENANCE MANUAL 41

General safety requirements 41

Dimensions and weights 42

- Circular delivery flange dimensions, FCR, FCE 47

- Inlet vibration-damping joint dimensions, GAR, GAE 48

- Delivery outlet dimensions on exhaust air, BLE 49

- Replacement air intake hood dimensions, CAR 49

- Replacement air intake damper dimensions, HSR 50

- Water integration coil manifold position and diameter 51

- Water direct expansion integration coil piping position and diameter 52

Minimum operative spaces 53

Rating plates 54

Receipt, storage, handling 55

Installation 57

Repositioning of internal components 60

First start-up 61

Unit maintenance 62

Unit disposal 63

Diagnosis and fault solving 63

FAST S.p.A.35044 Montagnana (PD) Italia – Via Luppia Alberi, 170Tel. (+39) 0429 806311Telefax (+39) 0429 806340www.fastaer.com - [email protected]

EC DECLARATION OF CONFORMITYHRC version with control and regulation system

We, signatories of the present document, declare under our sole responsibility that the said unit defined as HRC with regulation and con-trol system is:

1. Designed, manufactured and marketed in accordance with the following European Directives: - Machine directive 2006/42/CE - Low voltage directive 73/23/EEC and subsequent modifications. - (EMC) Electromagnetic compatibility directive 89/336/EEC and subsequent modifications.

The validity of this declaration becomes void in the event the machine is modified without the written authorisation of the manufac-turer.

Chief executive

Paolo Gasparini

HRC

Montagnana (PD), 16/06/2007

MANUFACTURER'S DECLARATIONHRC version without control and regulation system

It is prohibited to start the device before the system in which it will be incorporated has been declared in conformity with the applicable directive.

The EC Declaration of Conformity is only valid for the version equipped with the regulation and control system, or with electrical or electronic equipment fitted by FAST S.p.A. and operating machines. Based on the risk analysis carried out, Fast S.p.A. apply the CE mark on these type of machines that certifies the complian-ce to that prescribed by the applicable European Directive.

The Declaration of Conformity does not substitute a risk analysis and evaluation of the air conditioning system in which the machine will be introduced.The Manufacturer's Declaration of Conformity is valid for the version without the control and regulation system. Therefore the completion of the regula-tion system must be provided and the CE mark performed in accordance with the

present legislations.In both cases, if the machine is equipped with direct expansion coils, both R407C as well as R410A, the coils are in Class per-taining to art. 3.3 of Directive 97/23 CE.

5

General standards

The present manual is an integral part of the docu-mentation enclosed with the machine. It must be conserved for

future reference and must accompany the machine throughout its working life.The manual defines the purpose to which the machine was built and establishes the correct installation and use limits.

• All use, installation and maintenance instructions of the unit are described in this manual as well as the main accident prevention standards.

• Read carefully and fully all informa-tion contained in this manual before the installation, starting, use, main-tenance and cleaning of the unit. Pay particular attention to the use regulations that are accompanied by “DANGER” or “WARNING”, because if not observed, they could cause dama-ge to the machine and/or persons and property.

• For irregularities not contemplated by this manual, consult the local After Sales Service.

• FAST S.p.A. decline any responsibility for any damage due to the improper use of the machine, and to a partial or superficial reading of the information contained in this manual.

• Installation and maintenance must be carried out by trained and qualified personnel, having the requirements laid down by law 46/90 and/or DPR 380/2001 for electric/electronic and air conditioning installations, with consequent registration at the local CHAMBER of COMMERCE. Otherwise FAST S.p.A. decline all responsibility regarding the safety of the product.

THE MANUFACTURER DECLINES ANY RESPONS IB IL ITY FOR DAMAGE TO PROPERTY, PERSONS OR ANIMALS CAUSED BY THE NON OBSERVANCE OF THE INDICATIONS AND REGULATIONS CONTAINED IN THE PRESENT MANUAL.

Even though a suitable risk analysis was carried out during the design of the HRC unit, pay ATTENTION to the pictograms on the machine that make the reading of the manual easier catching the readers atten-tion concerning risks that can't be avoided or sufficiently limited with the adoption of protection means and measures.

GENERAL DANGER SIGNSCarefully observe all indications at the side of the pictogram. The non observance of the indi-

cations could cause hazardous conditions with possible injury to the operator and to the user in general.

VOLTAGE DANGER SIGN Carefully observe all indications at the side of the pictogram. The signs indicate components on

the unit or, in the present manual, iden-tify areas that could generate risks of an electrical nature.

GENERAL WARNING SIGNSCarefully observe all indications to the side of the pictogram that limit some actions in order to

ensure greater safety for the operator.

M A I N G U A R A N T E E CONDITIONS

• The guarantee does not include pay-ment for damages due to incorrect installation by the installer.

• The guarantee does not include pay-ment for damages due to the improper use of the unit by the user.

• The manufacture is not responsible for injuries to the installer or user, caused by incorrect installation or improper use of the unit;

• The equipment must be installed in such a manner so as to permit mainte-nance and/or repair operations;

• The guarantee does not cover in any case costs due to turntable ladders, scaffolding or other similar elevating systems that are necessary to carry out operations under guarantee.

The guarantee is not valid if:• the services and repairs have been

carried out by unauthorised personnel or companies;

• the unit has been previously repaired or modified with non original parts;

• the unit has not been suitably maintai-ned;

• the instructions illustrated in the pre-sent manual have not been observed;

• unauthorised modifications have been made.

Note:The manufacturer reserves the right to carry out modifications at any time deemed necessary to improve their product, and are not obliged to apply the said modifications to previously manufactured machines that have already been delivered or are being con-structed.The general conditions are in any case subject to the general sale conditions foreseen on the stipulation of the contract.

HRC series high efficiency heat recovery units

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Selection, installation, use and maintenance manual

6

Figure 1 - HRC series high efficiency heat recovery unit.


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Description of the unit

The HRC series units have been designed to satisfy the thermohygrometric well-being and the circulation and quality of the air. In fact, they permit a determined amount of air to be extracted from the environment and replace it with replace-ment air.The unit uses a high efficiency heat reco-very unit that reduces the energy output to a minimum.The heat recovery unit has specially desi-gned aluminium plates to permit maximum heat exchange efficiency and to increase the air side flow section so as to minimise the pressure drop.The replacement air is therefore prehea-ted or pre-cooled, depending on the sea-son, by the air being expelled. The forced air is filtered prior to passing through the recovery unit that is kept clean by means of a similar filter (G4) on the expulsion side as well.The continual speed variation is obtained thanks to the inverters supplied with the

electric fans.The HRC series are the ideal solution to plant engineering needs typical of public environments such as bars, restaurants, offices and conference rooms.The high reliability of the components used and the severe tests that the units are subjected to, guarantee high qualita-tive standards that facilitate the installa-tion and maintenance of the machine.

Available versions1) BASE VERSION, (B): unit equipped with filters, heat recovery unit and fans;2) VERSION WITH TOTAL BY-PASS, (B): unit equipped with opposed function air lock on the pack of the recovery unit and on its by-pass with standard ON/OFF servo control (unit equipped with filters, heat recovery unit and fans).Each of the units can be individually equipped with integration coils:- W: water coil (for mixed hot or cold run-ning): in this case the coil is always posi-

tioned below downstream of the recovery unit on the delivery air flow. - C, A: direct expansion coil, to R407C (C) or to R410A (A), (for heating or cooling operations): in this case the coil is always positioned below downstream of the reco-very unit on the delivery air flow.

SELECTION MANUAL

7

Model 10 20 30 40 50

Standard version, (B) 1000 2000 3000 4000 5000

Total by-pass version, (T) -- 1000 2000 3000 4000

TABLE 1 - Nominal air flow rate for model, [m3/h]

Figure 2 - Example of field 6 selection.


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Unit choice and configuration

Table 2 on page 8 lists all items necessary for the compilation of the commercial acronym made up of 18 fields.

When configuring the unit always remem-ber that not all configurations are possi-ble .

FIELD 2 - 3A choice of two different versions is avai-lable: B and T.With the external dimensions of each mo-del being equal, the two different versions are characterised by different nominal air flow rates as illustrated in table 1.

FIELD 6If an integration coil is present, both wa-ter as well as direct expansion, this must be positioned in the lower section of the machine. This position obviously influences also the position of the delivery fan, as il-lustrated in figure 2.

FIELD 7It is possible to choose whether the delive-ry fan, DF, will be positioned in the upper part or the lower part of the machine. The extraction fan, EF, can also be positioned above or below it (figure 3). The position of the fans can't be opposite.The presence of an integration coil preven-ts positioning the delivery fan on the upper part of the machine:

Field 7 = D if Field 6 = W or C or A.

FIELD 8The right, RH, or left, LH, direction of the machine is determined taking into con-sideration the flow of air exiting the de-livery fan. Both the right or left position can be chosen as well as the connections (condensate discharge, manifolds or coil connections) and the inspection panels. For models with two delivery fans and two extraction fans, inspection is guaranteed from both sides.

Configuration example :HRC high efficiency heat recovery units ha-ving the following characteristics: - standard version - nominal air flow 3000 m3/h; - electric pre-heating coil;

- no pocket filter; - direct expansion integration coil (R407C refrigerant); - delivery fan below (cannot be positioned above due to the presence of the integra-tion coil); - RH connections and RH inspection; - no protective roof; - filters pressure switch; - no three-way valve; - replacement air delivery circular flange; - no replacement air intake vibration-dam-ping joint ; - replacement air intake damper; - no replacement air intake hood;

- no extraction air delivery accessory;- no replacement air intake vibration-dam-ping joint ; - no regulation.

HB3YNCD1NYNYNYNNNN

DF

EF

EF = extraction fanDF= delivery fan

8

FIELD DESCRIPTION NOTE

SERIES

1 H HRC

HEAT RECOVERY UNIT

2B Base

T Total bypass servo control on inspection side

MACHINE SIZE

3

1 10 - (nominal air flow rate 1000 m3/h; n.s. if FIELD 2 = P or T

2 20 - (nominal air flow rate 2000 m3/h;




HBX - ELECTRIC PRE-HEATING COIL (ANTIFREEZING)

4N No (absent)

Y Yes (present)

HFT - POCKET FILTER

5N No (absent)

Y Yes (present)

HBW, HBC, HBA - INTEGRATION COILS

6

N No (absent)

W Water (hot/cold water integration coil) - HBW

C Direct expansion (R407C direct expansion integration coil) - HBC

A Direct expansion (R410A direct expansion integration coil) - HBA

DELIVERY FAN

7U Up (delivery fan above, intake below) n.a. if FIELD 6 = W or C or A

D Down (delivery fan below, intake above)

CONNECTION/INSPECTION SIDE IN RELATION TO THE DELIVERY FAN

8

1 Connections RH side, inspection RH side

2 Connections RH side, inspection LH side

3 Connections LH side, inspection RH side

4 Connections LH side, inspection LH side

PR - PROTECTIVE ROOF

9N No (absent)

Y Yes (present)

HPF - FILTER PRESSURE SWITCH

10N No (absent)

Y Yes (present)

V3V - THREE-WAY VALVE

11N No (absent)

Y Yes (present)

FCR - FRESH AIR DELIVERY CIRCULAR FLANGE

12N No (absent)

Y Yes (present)

GAR - FRESH AIR INTAKE VIBRATION-DAMPING JOINT

13N No (absent)

Y Yes (present)

HSR - FRESH AIR INTAKE DAMPER

14N No (absent)

Y Yes (present)

continue...


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TABLE 2 - Composition of the commercial acronym

9

FIELD DESCRIPTION NOTE

CAR - FRESH AIR INTAKE HOODS

15N No (absent)

Y Yes (present)

FCE, BLE, EXHAUST AIR DELIVERY ACCESSORIES

16

N No (no intake accessories)

1 Circular delivery flange - FCE

2 Delivery cowls - BLE

GAE - EXHAUST AIR INTAKE VIBRATION-DAMPING JOINT

17N No (absent)

Y Yes (present)

REGULATION/ELECTRICAL PANEL

18

N No (absent)

1 Electrical panel + flow manual control - CM

2 Electrical panel + constant flow control - CPO

3 Electrical panel + constant head control (from fan) - CPV

4 Electrical panel + constant head control (from pressure probe) - CPS


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Figure 3 - Example of field 7 selection.

DF

EF

FIELD 7 = D

DF

EF

FIELD 7 = U

EF = extraction fanDF= delivery fan

The minimum and maximum flow rate of each model is illustrated in the adjacent table, both in the standard version as well as with total bypass. The renewal flow rate in the diagram coincides with that of the exhaust air flow rate.Therefore the indicated flow-rate range re-fers to cases with 0-10 V power supply.

Air flow-rate range

B05

T 02

T 03

T 04

T 05

/ Model

000600550005005400040053000300520002005100010050

B 01

B 02

B 03

B 04

05 B

/ aira'd etatroP wolfriA m[ 3 ]h/

Mo

del

lo /

10

Description of main components

Equipment


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Standard version, (B)In the standard version, all air taken from the outside passes through the heat reco-very unit.

Version with total bypass, (T)The heat recovery unit can be completely bypassed in the version with total bypass and when the external air temperature

permits, takes the external air and tran-sfers it directly to the delivery channel. The fresh air flow passes through the filter but bypasses the heat recovery unit and is therefore not effected by the heat tran-sfer. To permit the free cooling function, the machine is equipped with two oppo-sed function dampers (0 - 100%). When the external temperature is close to that of the ideal room temperature, the bypass damper is completely open and that of the

recovery unit is completely closed.The free cooling function does not allow the use of the direct expansion or water integration coil, even if present.

KEY

1 Heat recovery unit

2 Fresh air fan

3 Exhaust air fan

4 Filter

5 Condensate collection tank

Figure 4 - Main components

The entire range of HRC high efficiency heat recovery units has been conceived in order to guarantee better and more acces-sible inspection of all parts (heat recovery unit, filters, condensate collection tank, coils and fans).

Structure and panellingAluminium frame (UNI 6060) and 25 mm galvanised steel sandwich panels for the internal surface and prepainted for the ex-ternal surface with injected polyurethane insulation (density 42 kg/m3). Continuous galvanised steel profile base. The disas-sembly of the internal panels for the ins-pection of parts has been made as simple as possible. Inspection of the unit can be made from both sides.

FiltersFresh and exhaust air side class G4 corru-gated filters (in accordance with EN 779) in 50 mm thick as standard.

Heat recovery unitCountercurrent heat recovery unit with high efficiency aluminium plates.

Condensate collection tankAluminium alloy condensate collection tank.

Intake and exhaust fansDouble suction centrifugal fans with forward curved impellers and directly con-nected motor.Single-phase 230V-50Hz single speed motor with electronic regulator for frequency re-gulation.

11

Accessories


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RegulationThere are four possible types of regula-tion:1) CM: manual control of the air flow rate;2) CPO: constant air flow rate;3) CPV: constant available pressure;4) CPS: constant available pressure based on a value read by a probe in the intake or delivery channel.For a more detailed description, see para-graph "Regulation" in the present manual, or the Regulation Manual supplied with the machine.

Water integration coil, HBWA hot or cold water integration coil is pre-sent positioned down stream of the heat recovery unit and before the delivery fan.The coil is always positioned in the lower part of the heat recovery unit and uses the same condensate collection tank.The coil is excluded during free cooling on machines equipped with total bypass.The coil is supplied with the connectors equipped with special plastic plugs.FAST suggests the three-way valve V3V accessory should be used in combination with the HBW.

Direct expansion integra-

tion coil, HBC, HBAA direct expansion integration coil, capa-ble of operating both as evaporator or condenser, is positioned down stream of the heat recovery unit and before the delivery fan.There is possibility of choice between the R407C and the R410A refrigerant.The coil is always positioned in the lower part of the heat recovery unit and uses the same condensate collection tank.The coil is excluded during free cooling on machines equipped with total bypass.The coil is supplied pressurised with inert gas and the connection pipes hermetically sealed.

Electric pre-heating coil (antifreezing), HBXThe electric pre-heating coil serves to prevent freezing on the heat recovery unit when the external temperature drops below a set value. This consists of shiel-ded finned elements in two stages and is positioned on the replacement air flow up stream of the filter. It is equipped with a manual reset safety thermostat calibrated at 90°C and an additional automatic reset thermostat calibrated between 30°C and

90°C.For details concerning the operational logic, see the Regulation Manual supplied with the machine if the machine is equip-ped with regulation.

High efficiency filters, HFTHigh efficiency pocket filters (F7 in accor-dance with EN 779) can be fitted down stream of the standard G4 filters. The F7 filters are fixed to a special frame by means of an airtight seal to avoid any bypass of untreated air. Access for their removal is ensured.

Protective roof, TPThe protective roof is necessary in the event of external installation, and serves to protect the unit from rain and bad weather.

Figure 5 - Circular flange accessory. Figure 6- Cowl accessory.

12


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Circular delivery flanges, FCR, FCEThis accessory is made up of a flange to be connected to the rectangular port of the unit so that a circular channel can be used (figure 5). For models with two fans, two flanges are available.

Rectangular intake vibra-tion-damping joint, GAR, GAETo avoid the transmission of vibrations to the air ducts generated by the machine's moving parts, an intake vibration-damping joint can be fitted both on the exhaust air duct as well as the fresh air one.

Exhaust air delivery cowls, BLEThe accessory is made up by a cowl to be connected to the rectangular connection of the unit so as to protect it from the rain or bad weather in external installa-

tions (figure 6). For models with two fans, two cowls are available. A protective mesh is also available.

Fresh air intake hoods, CARThe accessory is made up by a hood to be connected to the intake of the fresh air so as to protect it from the rain or bad wea-ther in external installations (figure 7). A protective mesh is also available.

Fresh air intake damper, CARThis is a damper to connect to the fresh air intake (figure 8). The damper is a 0-100% type and is closed when the machine is off or to protect it from freezing. The fresh air damper the actuator is manual type.

Differential pressure switch on the fresh air, HPFControls the state of blockage of the air

filters. It is activated creating an alarm when a pre-set value of the differential pressure is reached.

Three-way valve, V3VThe 230 V ON - OFF three-way valve can be combined to the water coil.The valve is supplied separate from the unit in a separate packaging. Assembly is the clients responsibility.

Figure 7 - Intake hood accessory. Figure 8- Intake damper accessory.

13

Compatibility of accessories

HRC size 10 20 30 40 50Version B B T B T B T B T

Electric pre-heating coil

HBX 10 O -- O -- -- -- -- -- --

HBX 20 -- O -- -- O -- -- -- --

HBX 30 -- -- -- O -- -- O -- --

HBX 40 -- -- -- -- -- O -- -- O

HBX 50 -- -- -- -- -- -- -- O --

High efficiency filters (F7)

HFT 10 O O O -- -- -- -- -- --

HFT 30 -- -- -- O O -- -- -- --

HFT 40 -- -- -- -- -- O O -- --

HFT 50 -- -- -- -- -- -- -- O O

Water integration coil

HBW 10 O O O -- -- -- -- -- --

HBW 30 -- -- -- O O -- -- -- --

HBW 40 -- -- -- -- -- O O -- --

HBW 50 -- -- -- -- -- -- -- O O

Direct expansion integration coil - R407C

HBC 10 O O O -- -- -- -- -- --

HBC 30 -- -- -- O O -- -- -- --

HBC 40 -- -- -- -- -- O O -- --

HBC 50 -- -- -- -- -- -- -- O O

Direct expansion integration coil - R410A

HBA 10 O O O -- -- -- -- -- --

HBA 30 -- -- -- O O -- -- -- --

HBA 40 -- -- -- -- -- O O -- --

HBA 50 -- -- -- -- -- -- -- O O

Protective roof

TP 10 O O O -- -- -- -- -- --

TP 30 -- -- -- O O -- -- -- --

TP 40 -- -- -- -- -- O O -- --

TP 50 -- -- -- -- -- -- -- O O

Fresh air circular flanges

FCR 10 O -- O -- -- -- -- -- --

FCR 20 -- O -- -- O -- -- -- --

FCR 30 -- -- -- O -- -- O -- --

FCR 40 -- -- -- -- -- O -- O O

Exhaust circular flanges

FCE 10 O -- O -- -- -- -- -- --

FCE 20 -- O -- -- O -- -- -- --

FCE 30 -- -- -- O -- -- O -- --

FCE 40 -- -- -- -- -- O -- O O

Freash air vibration-damping joint

GAR 10 O O O -- -- -- -- -- --

GAR 20 -- -- -- O O -- -- -- --

GAR 30 -- -- -- -- -- O O -- --

GAR 40 -- -- -- -- -- -- -- O O

O available-- unavailable

B = standard version (without bypass)T = version with 100 % bypass

NOTE: Total bypass version is not available for size 10.


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TABLE 3 - Compatibility of accessories.

14


Exhaust air vibration-damping joint

GAE 10 O O O -- -- -- -- -- --

GAE 20 -- -- -- O O -- -- -- --

GAE 30 -- -- -- -- -- O O -- --

GAE 40 -- -- -- -- -- -- -- O O

Fresh air intake hoods

CAR 10 O O O -- -- -- -- -- --

CAR 30 -- -- -- O O -- -- -- --

CAR 40 -- -- -- -- -- O O -- --

CAR 50 -- -- -- -- -- -- -- O O

Exhaust air cowls

BLE 10 O -- O -- -- -- -- -- --

BLE 20 -- O -- -- O -- -- -- --

BLE 30 -- -- -- O -- -- O -- --

BLE 40 -- -- -- -- -- O -- O O

Fresh air damper

HSR 10 O O O -- -- -- -- -- --

HSR 30 -- -- -- O O -- -- -- --

HSR 40 -- -- -- -- -- O O -- --

HSR 50 -- -- -- -- -- -- -- O O

Filters pressure switch HPF O O O O O O O O O

Three-way valve V3V O O O O O O O O O

Regulation (option 1)

CM 10 O O O -- O -- -- -- --

CM 30 -- -- -- O -- -- O -- --

CM 40 -- -- -- -- -- O -- -- O

CM 50 -- -- -- -- -- -- -- O --


CPO 10 O O O -- O -- -- -- --

CPO 30 -- -- -- O -- -- O -- --

CPO 40 -- -- -- -- -- O -- -- O

CPO 50 -- -- -- -- -- -- -- O --


CPV 10 O O O -- O -- -- -- --

CPV 30 -- -- -- O -- -- O -- --

CPV 40 -- -- -- -- -- O -- -- O

CPV 50 -- -- -- -- -- -- -- O --


CPS 10 O O O -- O -- -- -- --

CPS 30 -- -- -- O -- -- O -- --

CPS 40 -- -- -- -- -- O -- -- O

CPS 50 -- -- -- -- -- -- -- O --

O available-- unavailable

B = standard version (without bypass)T = version with 100 % bypass

NOTE: Total bypass version is not available for size 10.


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15


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MODEL Vmin Vmed Vmax

HRC 10 B 500 800 1000

HRC 20 B 1000 1600 2000

HRC 30 B 1500 2400 3000

HRC 40 B 2000 3200 4000

HRC 50 B 2500 4000 5000

HRC 20 T 500 800 1000

HRC 30 T 1000 1600 2000

HRC 40 T 1500 2400 3000

HRC 50 T 2000 3200 4000

TABLE 4 - CPO function nominal flow-rate, [m3/h]

Electronic regulation

The machine can be equipped with four different regulation modes (factory set):• CM: Manual control of the flow-rate 0-10V.• CPO: Automatic control of the flow-rate (0-10V) [V1-V2-V3].• CPV: Automatic pressure control of the fans (0-10V) [Set ΔP].• CPS: Automatic pressure control (0-10V) by pressure sensors 4-20mA.

NOTE: One mode excludes the other.

CM: Manual control of the flow-rate 0-10V.The flow-rate will be managed by a linear and proportional keyboard varied signal 0-10V .

CPO: Flow-rate control (0-10V)This option consists in regulation with constant flow. Three different flow-rates con be selected, Vmin, Vmed, Vmax (see table 4), that are maintained constant through the frequency variation of the fan's inverter (see the Regulation Manual for further information). .The flow-rate that can be set is that of the fresh air fan. For that of the exhaust fan, a flow-rate expressed as a percentage of the fresh air is expected.

NOTE:Once the flow-rate has been selected, the inverter will then maintain and manage the flow within the permitted limits.

CPV: Fan pressure control (0-10V)The delivery fan is automatically adjusted to maintain a constant value of the sup-plied static pressure. The pressure value is that of an operating point of the fan curve. A parameter is used to select if the set value refers to the fresh air or the exhaust air electric fan. For example, by selecting the fresh air pressure the exhaust will be configured by a parameter expressed as a percentage (%) of the first

(see the Regulation Manual for further information).

NOTE:Once the pressure has been set, the inver-ter will then maintain and manage it within the permitted limits.

CPS: Pressure control (0-10V) by pressure sensors 4-20mAThe delivery fan is automatically adjusted to maintain a constant value of the sup-plied static pressure. The pressure value is taken from a pressure sensor in the intake or exhaust duct depending on the case. The regulation is sent to the delivery or exhaust fan depending on where the sen-sor is positioned, for example, by selec-ting the delivery the exhaust is configured by means of a parameter expressed as a percentage (%) in relation to the other (see the Regulation Manual for further information).

NOTE:Once the pressure has been selected, the control will then maintain and manage the pressure within the permitted limits.

Figure 9 - LCD Display

16

Model 10 20 30 40 50

Nominal fresh air flow-rate [m3/h] 1000 2000 3000 4000 5000

Nominal fresh static pressure available (1) [Pa] 340 340 280 460 350

Nominal exhaust air flow-rate [m3/h] 1000 2000 3000 4000 5000

Nominal exhaust static pressure available (1) [Pa] 340 340 280 460 350

Maximum fresh/exhaust air flow-rate [m3/h] 1200 2400 3600 4800 6000

Minimum fresh/exhaust air flow-rate [m3/h] 500 1000 1500 2000 2500

Heat recovery unit high efficiency

Number 1 2 3 3 4

Recovered winter heating capacity [kW] 8.8 17.7 26.5 35.1 44.1

Winter efficiency [%] 82.4 82.4 82.4 82.0 82.4

Recovered summer cooling capacity [kW] 2.1 4.2 6.3 8.3 10.4

Summer efficiency [%] 69.2 69.2 69.2 68.8 69.2

Fresh air fans

Number of fans 1 2 1 2 2

Total maximum input power [kW] 1,0 2,0 2,0 4,0 4,0

Total maximum input current [A] 4,4 8,8 8,4 16,8 16,8

Power supply (voltage/phases/frequency) [V-ph-Hz] 230-1-50

Speed variation inverter

Inverter number 1 1 1 2 2

Protection class IP 44

Class of insulation F

Exhaust air fans

Number of fans 1 2 1 2 2

Total maximum input power [kW] 1,0 2,0 2,0 4,0 4,0

Total maximum input current [A] 4,4 8,8 8,4 16,8 16,8



Inverter number 1 1 1 2 2



Filters

Classification according to EN779 G4 G4 G4 G4 G4

Efficiency [%] 90 90 90 90 90

Sound pressure level [dB(A)] 24.8 26.9 29.3 31.6 36.5

Dimensions and weight

Length [mm] 1900 1900 1900 1900 1900

Width [mm] 900 900 1300 1600 2100

Height [mm] 1300 1300 1300 1300 1300

Weight [kg] 290 315 373 453 531

Condensate collection tank discharge diameter 1” 1” 1” 1” 1”

(1) Clean filter Outside air temperature -10°C; outside air relative humidity 90%. Inside air temperature 22°C; inside air relative humidity 50%. Outside air temperature 35°C; outside air relative humidity 50%. Inside air temperature 26°C; inside air relative humidity 50%. Sound pressure at 10 m in a free field, laterally to the unit, with direction factor 2 and delivery outlets channelled for at lest 2 m. If the regulation option is not foreseen

Nominal technical data


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HRC standard version

17

Model 20 30 40 50

Nominal fresh air flow-rate [m3/h] 1000 2000 3000 4000

Nominal fresh static pressure available (1) [Pa] 410 360 280 410

Nominal exhaust air flow-rate [m3/h] 1000 2000 3000 4000

Nominal exhaust static pressure available (1) [Pa] 410 360 280 410

Maximum fresh/exhaust air flow-rate [m3/h] 1200 2400 3600 4800

Minimum fresh/exhaust air flow-rate [m3/h] 500 1000 1500 2000

Heat recovery unit high efficiency

Number 1 2 3 4

Recovered winter heating capacity [kW] 9.0 17.8 26.5 35.5

Winter efficiency [%] 83.9 83.2 82.4 82.8

Recovered summer cooling capacity [kW] 2.1 4.2 6.3 8.4

Summer efficiency [%] 70.4 69.9 69.2 69.5

Fresh air fans

Number of fans 1 2 1 2

Total maximum input power [kW] 1,0 2,0 2,0 4,0

Total maximum input current [A] 4,4 8,8 8,4 16,8



Inverter number 1 1 1 2



Exhaust air fans

Number of fans 1 2 1 2

Total maximum input power [kW] 1,0 2,0 2,0 4,0

Total maximum input current [A] 4,4 8,8 8,4 16,8



Inverter number 1 1 1 2



Filters

Classification according to EN779 G4 G4 G4 G4

Efficiency [%] 90 90 90 90

Sound pressure level [dB(A)] 23.3 25.3 32.0 33.3

Dimensions and weight

Length [mm] 1900 1900 1900 1900

Width [mm] 900 1300 1600 2100

Height [mm] 1300 1300 1300 1300

Weight [kg] 305 377 431 521

Condensate collection tank discharge diameter 1” 1” 1” 1”

(1) Clean filter Outside air temperature -10°C; outside air relative humidity 90%. Inside air temperature 22°C; inside air relative humidity 50%. Outside air temperature 35°C; outside air relative humidity 50%. Inside air temperature 26°C; inside air relative humidity 50%. Sound pressure at 10 m in a free field, laterally to the unit, with direction factor 2 and delivery outlets channelled for at lest 2 m. If the regulation option is not foreseen

HRC version with total bypass


0108-6180511-rev.0


18

Performance variations


FRESH AIR AND EXHAUST FANS

Total number 2 4 2 2 4 4 2 4 4

Single fan maximum current input [A] 4,4 8,8 4,4 8,4 4,4 8,4 8,4 8,4 8,4

Single fan maximum power input [kW] 1,0 2,0 1,0 2,0 1,0 2,0 2,0 2,0 2,0

ELECTRIC HEATING COILS

Supply 400V/3ph/50Hz

Maximum current input [A] 5,5 10,5 5,5 15,2 10,5 21,0 15,2 22,8 21,0

Maximum power input [kW] 3,6 6,9 3,6 10,0 6,9 13,8 10,0 15,0 13,8

TOTAL

Supply 230V/1ph/50Hz (400V/3ph + N/50Hz with electric heating coil)

Maximum current input [A] 14,3 28,1 14,3 32 28,1 54,6 32 56,4 54,6

Maximum power input [kW] 5,6 10,9 5,6 14 10,9 21,8 14 23 21,8


0108-6180511-rev.0


Total electrical data

Heat recovery unit: winter running

48

58

68

78

88

CRH 01 B CRH 02 B CRH 03 BCRH 04 B

CRH 05 B

08

18

28

38

00070006000500040003000200010

Standard model efficiency

The data refer to nominal conditions: - outside air temperature -10°C; - outside air relative humidity 90%; - inside air temperature 22°C; - inside air relative humidity 50%.For outside air temperature values diffe-

rent from the nominal values, reference is given to the correction coefficient in table 5. The heating capacity has also been indica-ted for different outside air temperatures.

The following diagrams illustrate the heat recovery efficiency of the standard and with total bypass machine in winter for different air flow-rate values (the per-formance of models with total bypass is intended with the bypass closed).

Air flow-rate, [m3/h]

Effi

cien

cy,

[%]

19


0108-6180511-rev.0


T outside air , [°C] K efficiency

-20 1.025

-10 1

-5 0.979

0 0.957

5 0.932

10 0.906

TABLE 5 - Correction coefficient of the efficiency based on the outside air temperature

84

85

86

87

88

HRC 20 T

HRC 50 T HRC 40 T

HRC 30 T

80

81

82

83

84

0 1000 2000 3000 4000 5000 6000

Total by pass models efficiency


Effi

cien

cy,

[%]

Test = -20 °C

50

60

70

80

Test = -10°C

Test = 0°C

Test = 10°C

0

10

20

30

40

0 1000 2000 3000 4000 5000 6000 7000

Recovered heating capacity: influence of the outside temperature


Reco

vere

d he

atin

g ca

paci

ty,

[kW

]

20


0108-6180511-rev.0


- Heat recovery unit: summer running

17

27

37

47

CRH 01 B CRH 02 B CRH 03 BCRH 04 B

CRH 05 B

76

86

96

07

00070006000500040003000200010

Standard model efficiency

71 0

72,0

73,0

74,0

75,0

HRC 20T

HRC 30 T

HRC 40 T

HRC 50 T

67,0

68,0

69,0

70,0

71,0

0 1000 2000 3000 4000 5000 6000

Models efficiency with partial and total bypass

The following diagrams illustrate the heat recovery efficiency of the standard and total bypass machine in summer for diffe-rent air flow-rate values (the performance of models with total bypass is intended with the bypass closed).The data refer to nominal conditions:

-outside air temperature 35°C; - outside air relative humidity 50%; - inside air temperature 26°C; - inside air relative humidity 50%.For fresh and exhaust air temperature values different from the nominal values, reference is given to the correction coef-

ficient in table 6. It is not bound by the intake air humidity changes because there is limited influence in this temperature inter-val.


Effi

cien

cy,

[%]


Effi

cien

cy,

[%]

21

MODEL 10 B 20 B 30 B 40 B 50 B

Number of stages 2 2 2 2 2

Power supply [V/ph/Hz] 400/3/50

Length [mm] 780 780 1180 1480 1980

Height [mm] 450 450 450 450 450

Heating capacity [kW] 3.6 6.9 10.0 13.8 15.0

Air flow rate [m3/h] 1000 2000 3000 4000 5000

Air pressure drops [Pa] 3.2 11.0 10.8 12.1 10.7

MODEL 20 T 30 T 40 T 50 T

Number of stages 2 2 2 2

Power supply [V/ph/Hz] 400/3/50

Length [mm] 780 780 1180 1480

Height [mm] 450 450 450 450

Heating capacity [kW] 3.6 6.9 10.0 13.8

Air flow rate [m3/h] 1000 2000 3000 4000

Air pressure drops [Pa] 3.2 11.0 10.8 12.1

Electric coils


0108-6180511-rev.0


Trepl, [°C] K performanceTexp = 20°C

K performanceTexp = 26°C

K performanceTexo= 30°C

28 0.889 0.222 0.222

32 1.333 0.667 0.222

35 1.682 1 0.556

38 2.037 1.333 0.889

TABLE 6 - Fresh air temperature and exhaust air temperature corrective coefficient of the recovered cooling capacity.

22


0108-6180511-rev.0


MODEL 10 B 20 B 30 B 40 B 50 B

Geometry 25x19 25x19 25x19 25x19 25x19

Rows 3 3 3 3 3

Length [mm] 700 700 1100 1400 1900

Height [mm] 425 425 425 425 425

WINTER RUNNING

Air flow rate [m3/h] 1000 2000 3000 4000 5000

Air side pressure drops [Pa] 6 23 21 23 20

Heating capacity (1) [kW] 12.9 21.5 33.4 44.0 56.7

Water flow rate (1) [l/h] 1126 1882 2922 3851 4962

Water side pressure drops (1) [kPa] 3.5 8.8 24.3 21.0 40.1



Water side pressure drops (2) [kPa] 4.2 10.5 29.4 25.5 48.7

SUMMER RUNNING

Air flow rate [m3/h] 1000 2000 3000 4000 5000


Total cooling capacity (3) [kW] 10.7 17.6 28.4 37.2 48.9

Sensible cooling capacity (3) [kW] 4.3 7.0 11.2 14.7 19.3


Water side pressure drops (3) [kPa] 11.0 27.1 80.3 68.8 136.2(1) Coil inlet water temperature 70°C: coil inlet-outlet temperature difference 10°C. Glycol percentage 0%. Outside air temperature (heat recovery unit inlet) -10°C; outside air relative humidity 90%. Inside air temperature 22°C; inside air relative humidity 50%.(2) Coil inlet water temperature 45°C: coil inlet-outlet temperature difference 5°C. Glycol percentage 0%. Outside air temperature (heat recovery unit inlet) -10°C; outside air relative humidity 90%. Inside air temperature 22°C; inside air relative humidity 50%.(3) Coil inlet water temperature 7°C: coil inlet-outlet temperature difference 5°C. Glycol percentage 0%. Outside air temperature (heat recovery unit inlet) 35°C; outside air relative humidity 50%. Inside air temperature 26°C; inside air relative humidity 50%.

Water integration coils

The following table illustrates the geo-metric characteristics of the water integration coil and winter and summer performance for nominal air conditions. Whereas the graphs illustrate the perfor-mance variations in terms of performance, water and air side pressure drops, on the change of the air flow rate and the diffe-rent models (for models with total bypass,

the performance is intended with bypass closed). In winter running conditions, the data are illustrated for two different water tempe-rature conditions on entry and exit of the coil: 70/60°C and 45/40°C. In summer conditions, the coil inlet and outlet water temperature is 7/12°C.Finally, table 7 illustrates the corrective

coefficient of the performance in winter for different percentages of ethylene glycol and for different fresh and exhaust air temperatures.

23

MODEL 20 T 30 T 40 T 50 T

Geometry 25x19 25x19 25x19 25x19

Rows 3 3 3 3

Length [mm] 700 1100 1400 1900

Height [mm] 425 425 425 425

WINTER RUNNING

Air flow rate [kW] 1000 2000 3000 4000

Air side pressure drops [Pa] 6 10 13 13

Heating capacity (1) [kW] 12.7 24.6 35.5 47.9

Water flow rate (1) [l/h] 1114 2154 3112 4198

Water side pressure drops (1) [kPa] 3.4 14.0 14.3 29.7




SUMMER RUNNING

Air flow rate [m3/h] 1000 2000 3000 4000


Total cooling capacity (3) [kW] 10.7 21.6 30.6 42.2

Sensible cooling capacity (3) [kW] 4.3 8.5 12.2 16.5



(1) Coil inlet water temperature 70°C: coil inlet-outlet temperature difference 10°C. Glycol percentage 0%. Outside air temperature (heat recovery unit inlet) -10°C; outside air relative humidity 90%. Inside air temperature 22°C; inside air relative humidity 50%.(2) Coil inlet water temperature 45°C: coil inlet-outlet temperature difference 5°C. Glycol percentage 0%. Outside air temperature (heat recovery unit inlet) -10°C; outside air relative humidity 90%. Inside air temperature 22°C; inside air relative humidity 50%.(3) Coil inlet water temperature 7°C: coil inlet-outlet temperature difference 5°C. Glycol percentage 0%. Outside air temperature 35°C (heat recovery unit inlet); outside air relative humidity 50%. Inside air temperature 26°C; inside air relative humidity 50%.


0108-6180511-rev.0


Ethylene glycol, [%] K performanceTH2O = 70/60°C

K performanceTH2O = 45/40°C

0 1 1

15 0.983 0.979

30 0.961 0.947

Fresh air temperature, [°C]

-20 1.016 1.030

-10 1 1

0 0.982 0.967

10 0.949 0.907

Exhaust air temperature, [°C]

20 1.044 1.081

22 1 1

25 0.934 0.878

30 0.821 0.670

TABLE 7 - Coil performance correction coefficient based on the glycol percentage, fresh air temperature and exhaust air temperature. Winter case.

24


0108-6180511-rev.0


Heating capacity performance in winter: water 45/40°C

HRC 30 B

HRC 40 BHRC 40 T

HRC 50 BHRC 50 T

20 0

25,0

30,0

35,0

40,0

HRC 10 BHRC 20 BHRC 20 T

HRC 30 BHRC 30 T

0,0

5,0

10,0

15,0

20,0

0 1000 2000 3000 4000 5000 6000 7000

CRH 03 B

CRH 04 BCRH 04 T

CRH 05 BCRH 05 T

0,04

0,05

0,06

0,07

CRH 01 BCRH 02 BCRH 02 T

T

0,0

0,01

0,02

0,03

00070006000500040003000200010

03CRH

Heating capacity performance in winter: water 70/60°C


Hea

ting

cap

acit

y, [

kW]


Hea

ting

cap

acit

y, [

kW]

25


0108-6180511-rev.0


Water side pressure drops in winter: water 70/60°C

HRC 30 BHRC 30 T

HRC 50 BHRC 50 T

30 0

40,0

50,0

60,0


HRC 40 BHRC 40 T

0,0

10,0

20,0

30,0

0 1000 2000 3000 4000 5000 6000 7000

Water side pressure drops in winter: water 45/40°C

HRC 30 BHRC 30 T

HRC 50 BHRC 50 T

40,0

50,0

60,0

70,0


HRC 40 BHRC 40 T

0,0

10,0

20,0

30,0

0 1000 2000 3000 4000 5000 6000 7000


Wat

er s

ide

pres

sure

dro

ps,

[kPa

]


Wat

er s

ide

pres

sure

dro

ps,

[kPa

]

26


0108-6180511-rev.0


Air side pressure drops in winter


HRC 30 BHRC 30 T

HRC 40 BHRC 40 T

HRC 50 BHRC 50 T

20,0

25,0

30,0

35,0

0,0

5,0

10,0

15,0

0 1000 2000 3000 4000 5000 6000 7000

Air side pressure drops in summer


HRC 30 BHRC 30 T

HRC 40 BHRC 40 T

HRC 50 BHRC 50 T

25 0

30,0

35,0

40,0

45,0

50,0

0,0

5,0

10,0

15,0

20,0

25,0

0 1000 2000 3000 4000 5000 6000 7000



Air

sid

e pr

essu

re d

rops

, [P

a]A

ir s

ide

pres

sure

dro

ps,

[Pa]

27


0108-6180511-rev.0


CRH 03 B

CRH 04 BCRH 04 T

CRH 05 BCRH 05 T

0,51

0,02

0,52


CRH 03 T

0,0

0,5

0,01

00070006000500040003000200010

CRH 03 B

CRH 04 BCRH 04 T

CRH 05 BCRH 05 T

0,03

0,04

0,05

0,06


CRH

03 T

0,0

0,01

0,02

0,03

00070006000500040003000200010

Total cooling capacity in summer: water 7/12°C

Sensible cooling capacity in summer: water 7/12°C


Tota

l coo

ling

capa

city

, [k

W]


Sens

ible

coo

ling

capa

city

, [k

W]

28


0108-6180511-rev.0


Ethylene glycol, [%] K total performance

K sensitive performance

0 1 1

15 0.948 0.954

30 0.879 0.895

TABLE 8 - Coil performance correction coefficient based on the percentage of glycol. Summer case.

The following diagram illustrates the cor-rection coefficient to apply to the sensi-tive and total cooling capacity when the fresh and exhaust air temperatures are different from the nominal temperature. The diagram is related to a relative humi-dity of the fresh air equal to 50 %. For different values refer to the subsequent diagram that illustrates an additional cor-rection coefficient to use when the outsi-de humidity is different than 50 %.

EXAMPLE:HRC 3000In nominal conditions:Pfrig TOT = 28.4 kWPfrig SENS = 11.2 kWIf:Trin = 30°CTexp = 20°Cthe diagram shows:Kresa TOT = 0.61Kresa SENS = 0.69i.e.:

Pfrig TOT = 0.60 x 28.4 kW = 17.3 kWPfrig SENS = 0.65 x 11.2 kW = 7.7 kW.If the relative humidity of the replacement air is 60 %, the sensible cooling capacity is not effected.The total cooling capacity is further multi-plied by the coefficient:Khumidity = 1.26of which:Pfrig TOT = 1.26 x 17.3 kW = 21.8 kW.

Water side pressure drops in summer: water 7/12°C

HRC 30 BHRC 30 T

HRC 50 BHRC 50 T

100 0

120,0

140,0

160,0

180,0

200,0


HRC 40 BHRC 40 T

0,0

20,0

40,0

60,0

80,0

100,0

0 1000 2000 3000 4000 5000 6000 7000


Wat

er s

ide

pres

sure

dro

ps,

[kPa

]

29


0108-6180511-rev.0


Texp = 20°CTexp = 26°C

Texp = 30°C1,200

1,400

Texp = 20 °C

Texp = 26 °C

Texp = 30°C

0,600

0,800

1,000

28 30 32 34 36 38

Texp = 26 °C

Texp = 30°C

Texp = 20°C

Texp = 26°C

Texp = 30°C

1

1,2

1,4

Texp = 20 °C

p

0,4

0,6

0,8

28 30 32 34 36 38

Sensible and total cooling capacity correction coefficient

Total cooling capacity correction coefficient on the variation of the fresh air humidity

Total cooling capacitySensitive cooling capacity

40%

60%


K RESA

TO

T, K

RESA

SEN

S


K HU

MID

ITY

30


0108-6180511-rev.0


Direct expansion integration coils

MODEL 10 B 20 B 30 B 40 B 50 B

Rows 3 3 3 3 3

Length [mm] 700 700 1100 1400 1900

Height [mm] 425 425 425 425 425

REFRIGERANT R407C

WINTER RUNNING

Air flow rate [m3/h] 1000 2000 3000 4000 5000



SUMMER RUNNING

Air flow rate [m3/h] 1000 2000 3000 4000 5000




REFRIGERANT R410A

WINTER RUNNING

Air flow rate [m3/h] 1000 2000 3000 4000 5000



SUMMER RUNNING

Air flow rate [m3/h] 1000 2000 3000 4000 5000




(1) Evaporation temperature (dew) 0°C; condensing temperature (average) 50°C. Outside air temperature -10°C; outside air relative humidity 90%. Inside air temperature 22°C; inside air relative humidity 50%.(2) Evaporation temperature (dew) 5°C; condensing temperature (average) 50°C. Outside air temperature 35°C; outside air relative humidity 50%. Inside air temperature 26°C; inside air relative humidity 50%.

The following table illustrates the geome-tric characteristics of the direct expansion integration coils R407C and R410A, and winter and summer performance for nomi-nal air conditions. Whereas the graphs illu-strate the performance variations in terms of air side pressure performance and loss,

changing the air flow rate and for the different models (for models with total bypass, the performance is intended with bypass closed). Evaporation and condensa-tion pressures are mantained costant.Finally, table 9 illustrates the corrective coefficient of the performance in winter

for both fluids, for different fresh air temperatures and average condensation.

31

MODEL 20 T 30 T 40 T 50 T

Rows 3 3 3 3

Length [mm] 700 1100 1400 1900

Height [mm] 425 425 425 425

REFRIGERANT R407C

WINTER RUNNING

Air flow rate [kW] 1000 2000 3000 4000



SUMMER RUNNING

Air flow rate [m3/h] 1000 2000 3000 4000




REFRIGERANT R410A

WINTER RUNNING

Air flow rate [kW] 1000 2000 3000 4000



SUMMER RUNNING

Air flow rate [m3/h] 1000 2000 3000 4000




(1) Evaporation temperature (dew) 0°C; condensing temperature (average) 50°C. Outside air temperature -10°C; outside air relative humidi-ty 90%. Inside air temperature 22°C; inside air relative humidity 50%.(2) Evaporation temperature (dew) 5°C; condensing temperature (average) 50°C. Outside air temperature 35°C; outside air relative humidi-ty 50%. Inside air temperature 26°C; inside air relative humidity 50%.


0108-6180511-rev.0


K performanceR407C and R410A


-20 1.023

-10 1

0 0.974

10 0.929

Exhaust air temperature, [°C]

20 1.062

22 1

25 0.906

30 0.747

Average condensing temperature, [°C]

20 1.002

22 1

25 1.151

TABLE 9 - Coil performance correction coefficient based on the fresh and exhaust air temperature and the condensing temperature. Winter case.

32


0108-6180511-rev.0


CRH 03 B

CRH 04 BCRH 04 T

CRH 05 BCRH 05 T

0,52

0,03

0,53

0,04

0,54


CRH 03 T

0,0

0,5

0,01

0,51

0,02

00070006000500040003000200010

Heating capacity performance in winter: R407C

CRH 03 B

CRH 04 BCRH 04 T

CRH 05 BCRH 05 T

0,52

0,03

0,53

0,04

0,54


CRH 03 T

0,0

0,5

0,01

0,51

0,02

00070006000500040003000200010

Heating capacity performance in winter: R410A



Hea

ting

cap

acit

y, [

kW]

Hea

ting

cap

acit

y, [

kW]

33


0108-6180511-rev.0


CRH 03 BCRH 03 P

CRH 04 BCRH 04 T

CRH 05 BCRH 05 T

0,21

0,61

0,02


CRH 03 T

0,0

0,4

0,8

00070006000500040003000200010

CRH 03 B

CRH 04 BCRH 04 T

CRH 05 BCRH 05 T

2 0,5

0,03

0,53

0,04

0,54

0,05


CRH 03 T

0,0

0,5

0,01

0,51

0,02

0,5

00070006000500040003000200010

Total cooling capacity in summer: R407C

Sensible cooling capacity in summer: R407C



Tota

l coo

ling

capa

city

, [k

W]

Sens

ible

coo

ling

capa

city

, [k

W]

34


0108-6180511-rev.0


CRH 03 B

CRH 04 BCRH 04 T

CRH 05 BCRH 05 T

21 0,

0,61

0,02

0,42


CRH 03CRH 03 T

0,0

0,4

0,8

0,

00070006000500040003000200010

CRH 03 B

CRH 04 BCRH 04 T

CRH 05 BCRH 05 T

0,03

0,04

0,05

0,06


CRH 03 T

0,0

0,01

0,02

0,03

00070006000500040003000200010

Total cooling capacity in summer: R410A

Sensible cooling capacity in summer: R410A



Tota

l coo

ling

capa

city

, [k

W]

Sens

ible

coo

ling

capa

city

, [k

W]

35


0108-6180511-rev.0


Texp = 26 °C

Texp = 30°C

Texp = 20°CTexp = 26°C

Texp = 30°C

1

1,2

1,4

Texp = 20 °C

0,4

0,6

0,8

1

28 29 30 31 32 33 34 35 36 37 38

Sensible and total cooling capacity correction coefficient - R407C and R410A

Total performanceSensitive performance


K RESA

TO

T, K

RESA

SEN

S

Fresh air humidity, [°C] K performance TOTR407C and R410A

K performance SENSR407C and R410A

40 0.836 1.074

50 1 1

60 1.166 0.944

TABLE 10 - Coil performance correction coefficient based on the fresh and exhaust air humidity and the condensing temperature. Winter case.

The diagram above permit to calculate the correction coefficient to apply to the sensitive and total cooling capacity when the fresh and exhaust air temperatures are different from the nominal tempe-rature. The diagram refers to a relative humidity of the replacement air equal to 50 %. For different humidity values, refer to table 10.

EXAMPLE:HRC 3000In nominal conditions:Pfrig TOT = 28.4 kWPfrig SENS = 11.2 kWIf:Trin = 30°CTexp = 20°Cthe diagram shows:

KperformanceTOT = 0.68Kperformance SENS = 0.79i.e.:Pfrig TOT = 0.68 x 28.4 kW = 19.3 kWPfrig SENS = 0.79 x 11.2 kW = 8.8 kW.the total cooling capacity is further mul-tiplied by coefficient 1.166, while the sensible cooling capacity by 0.944of which:Pfrig TOT = 1.166 x 19.3 kW = 22.5 kWPfrig SENS = 0.944 x 8.8 kW = 8.3 kW.

36


0108-6180511-rev.0


Air side pressure drops in winter - Refrigerant R407C and R410A


HRC 30 BHRC 30 T

HRC 40 BHRC 40 T

HRC 50 BHRC 50 T

20,0

25,0

30,0

35,0

0,0

5,0

10,0

15,0

0 1000 2000 3000 4000 5000 6000 7000

Air side pressure drops in summer- Refrigerant R407C and R410A


HRC 30 BHRC 30 T

HRC 40 BHRC 40 T

HRC 50 BHRC 50 T

25 0

30,0

35,0

40,0

45,0

50,0

0,0

5,0

10,0

15,0

20,0

25,0

0 1000 2000 3000 4000 5000 6000 7000



Air

sid

e pr

essu

re d

rops

, [k

Pa]

Air

sid

e pr

essu

re d

rops

, [k

Pa]

37


0108-6180511-rev.0


Filters

Filter G4 pressure drops


HRC 30 BHRC 30 T

HRC 40 BHRC 40 T

HRC 50 BHRC 50 T

40

50

60

0

10

20

30

0 1000 2000 3000 4000 5000 6000 7000


HRC 50 BHRC 50

T

HRC 30

B

HRC 30 THRC 40 BHRC 40

T80

100

120

0

20

40

60

0 1000 2000 3000 4000 5000 6000 7000

Filter F7 pressure drops

The following diagrams illustrate the pres-sure drops based on the flow rate through the G4 and F7 filters. The indicated drops are intended with the filter clean.



Pres

sure

dro

p, [

Pa]

Pres

sure

dro

p, [

Pa]

38


0108-6180511-rev.0


Fan electric input

The following diagrams illustrate fan power and current input, Pass and Cass, for different mass flow rate and fan static pressure. Diagrams refers to single fan. Therefore, to calculate the total electric

input power and current, it is necessary to consider both exahust and fresh air fan. In models in which there are two exhaust fan and two fresh air fan the total power and current input will be doubled.

Fan static pressure comes from available static pressure increased of all air pressu-re drop through all unit components.

4,00

5,00

6,00

500

600

700

800

900

0,00

1,00

2,00

3,00

0

100

200

300

400

0 500 1000 1500 2000 2500 3000

Pass Cass

Air flow rate, [m3/h]

Pow

er in

put,

[W

]

Curr

ent

inpu

t, [

A]

500 Pa

100 Pa

300 Pa

HRC 10B, 20B, 20T, 30T Fan Electric Input

HRC 30B, 40T Fan Electric Input

5,00

6,00

7,00

8,00

800

1000

1200

1400

0,00

1,00

2,00

3,00

4,00

0

200

400

600

1000 1500 2000 2500 3000 3500 4000

Pass Cass


500 Pa

100 Pa

300 PaPow

er in

put,

[W

]

Curr

ent

inpu

t, [

A]

39


0108-6180511-rev.0


4,00

5,00

6,00

7,00

800

1000

1200

0,00

1,00

2,00

3,00

0

200

400

600

1000 1500 2000 2500 3000 3500

Pass Cass


500 Pa

100 Pa

300 Pa

HRC 50B Fan Electric Input

Pow

er in

put,

[W

]

Curr

ent

inpu

t, [

A]

HRC 40B, 50T Fan Electric Input

2,50

3,00

3,50

4,00

400

500

600

700

0,00

0,50

1,00

1,50

2,00

0

100

200

300

900 1000 1100 1200 1300 1400 1500

Pass Cass


Pow

er in

put,

[W

]

Curr

ent

inpu

t, [

A]500 Pa

100 Pa

300 Pa

40


0108-6180511-rev.0


Sound pressure level, dB(A)

Operating limits

MODEL 10B10T

20B20T

30B30T

40B40T

50B50T

Maximum hot water coil inlet temperature [°C] 70 70 70 70 70

Maximum water coil inlet pressure [bar] 8 8 8 8 8

Maximum water coil percentage of glycol [%] 30 30 30 30 30

Maximum condensing pressure (R407C) [bar] 30 30 30 30 30

Maximum condensing pressure (R410A) [bar] 42 42 42 42 42

Minimum inverter surrounding temperature [°C] -20 -20 -20 -20 -20

Maximum inverter surrounding temperature [°C] 70 70 70 70 70

MODEL 10B 20B 20T 30B 30T 40B 40T 50B 50T

Frequency [Hz]

125 17.1 19.1 20.6 24.0 22.6 27.6 27.6 27.0 31.1

250 18.9 20.9 19.1 23.1 21.1 29.9 26.6 29.1 30.1

500 19.6 21.6 19.9 26.8 21.9 28.0 27.0 28.3 28.3

1000 20.2 22.2 18.9 28.3 20.9 31.1 28.6 31.4 29.8

2000 14.0 16.0 14.3 24.9 16.3 24.7 23.6 24.9 25.0

4000 9.3 11.3 9.3 22.0 11.3 22.9 22.3 23.5 22.9

8000 8.6 13.9 8.5 13.8 14.6 14.5 13.8 15.1 14.4

LpTOT(A) 24.8 26.9 23.3 29.3 25.3 31.6 32.0 36.5 33.3

Sound pressure at 10 m in a free field, laterally to the unit, with direction factor 2 and delivery outlets channelled for at lest 2 m.

41


0108-6180511-rev.0


INSTALLATION, USE AND MAINTENANCE MANUAL

WARNING!The HRC series units are destined to the public and services sectors: any other use (in highly corrosive

environments, in the presence of potentially explosive surroundings, etc.) is not permit-ted.

Installation and maintenanceBefore installation, make sure that the unit has not been damaged during transportation: the use of a damaged machine may be hazar-dous.Installation and supplementary maintenance must be carried out by trained personnel in accordance with the present laws.The unit must not be used as recovery of equi-pment or spare parts. Any other use other than that indicated in the present manual may be hazardous and is therefore prohibited.Before starting any maintenance or cleaning operations, make sure the units is discon-nected from the power supply and that it can-not be reconnected without the knowledge of the maintenance engineer.During maintenance and cleaning, take care of possible burning from heating coils.Before starting the unit, make sure that the electrical parts have been connected to the

building's earth system.Before starting the unit, make sure that the fan inlets have been channelized or equipped with accident prevention mesh.During installation, maintenance and clea-ning, Personal Protective Equipment (PPE) must be worn and the correct tools used.

Access to the unitAccess to the unit once it has been installed must only be permitted to qualified operators and technicians. The operator is a person who has been authorised by the owner of the machine to carry out operations on the said machine (in accordance with that indicated in the present manual). The technician is a per-son authorised by FAST or subordinate under their own responsibility by a FAST distributor, to carry out operations on the machine. The owner of the machine is the legal representa-tive of the company, entity or individual ow-ner of the system in which the FAST machine is installed. These persons are responsible for the observance of all safety standards indi-cated in the present manual and the existing

law. In the event that access by unauthorised persons to the machine can not be prevented due to the nature of the location in which it is installed, a cordoned area must be defined around the machine and at least 1.5 meters from the external surface, inside of which only operators and technicians are permitted.

Residual risksThe installation, start-up, shutdown and maintenance of the machine must be carried out in accordance with that stipulated in the technical documentation of the product and in such a manner that no hazardous situations are generated. The machine has been desi-gned so as to reduce to a minimum the risks for the safety of those persons interacting with it. During the design phase, it was not technically possible to completely eliminate the risk causes. Therefore it is imperative to refer to the following instructions.

General safety requirements

CONSIDERED PART RESIDUAL RISK METHOD PRECAUTION

Inside the unit: finned heat exchanger coil

small cuts contactavoid contact, use protective

gloves

Inside the unit: electric pre-heating coil

burns injuries contact avoid contact

Inside the unit: metal parts and electrical cables

intoxication, electrocution, severe burns

insulation defect of the power supply cables upstream of the unit's electric panel; live metal

parts

suitable electrical protection of the power supply line; maximum

care when earthing the metal parts

Outside the unit: area around the unit

serious burns

fire due to short circuit or ove-rheating of the power supply line

upstream of the unit's electric panel

cable section and power supply line safety system conforming

with existing laws

42

348 204 348

90070

91,5

283

302

283

340,5

1900

1300

30555

30555

130

30 840 30

136,5 204 219 204 136,5

91,5

283

302

283

340,5

30 840 30

30555

30555

130

1900

1300

90070

HRC 10B

HRC 20B


0108-6180511-rev.0


Dimensions and weights

43

500 300 500

130070

61,5

330

255

330

323,5

1900

1300

30 1240 30

30555

30555

130

271 300 458 300 270 61,5

330

255

330

323,5

1900

1300

70 1600

30 1540 30

30555

30555

130

HRC 30B

HRC 40B


0108-6180511-rev.0


44

475 300 550 300 475 61,5

330

255

330

323,5

70 2100

1300

1900

30 2040 30

30555

30555

130

HRC 50B

348 204 348

91,5

283

302

283

340,5

70 900 1900

1300

30 840 3030

555

30555

130

HRC 20T


0108-6180511-rev.0


45

70 1300

241,5 204 409 204 241,5

91,5

283

302

283

340,5

1300

1900

30 1240 30

30555

30555

130

650 300 650 61,5

330

255

330

323,5

70 1600 1900

1300

30 1540 30 30555

30555

130

HRC 40T

HRC 30T


0108-6180511-rev.0


46

70 2100

475 300 550 300 475

61,5

330

255

330

323,5

1300

1900

30 2040 30 30555

30555

130

HRC 50T


0108-6180511-rev.0


MODEL 10 20 30 40 50

B B T B T B T B T

Standard version [kg] 290 315 305 373 377 453 431 531 521

Extra electric heating coil, HBX [kg] 12 13 12 20 13 25 20 33 25

Extra water coil, HBW [kg] 10 10 10 16 16 20 20 27 27

Extra coil ED, HBC [kg] 10 10 10 16 16 20 20 27 27

Extra coil ED, HBA [kg] 10 10 10 16 16 20 20 27 27

Extra filter F7, HFT [kg] 8 8 8 16 16 18 18 24 24

TABLE 11 - Machine weights

47

O

A

B

CC

CAB

C

D


0108-6180511-rev.0


MODEL 10 20 30 40 50

B B T B T B T B T

Number 1 2 1 1 2 2 1 2 2

A [mm] 380 380 380 440 380 440 440 440 440

B [mm] 400 400 400 460 400 460 460 460 460

C [mm] 10 10 10 10 10 10 10 10 10

D [mm] 61 61 61 61 61 61 61 61 61

Φ [mm] 380 380 380 450 380 450 450 450 450

Circular delivery flange diameters, FCR, FCE

Table 11 indicates the dimensions of the circular delivery flange both for the fresh air as well as the exhaust air. The number

of flanges present refers to the fresh air flow only or to the exhaust flow rate only.

TABLE 11 - Circular delivery flange dimensions.

Figure 10 - Circular delivery flange.

48

170 ± 10 B

H

170

30450

30

3030

0

30


0108-6180511-rev.0


Inlet vibration-damping joint diameter, GAR, GAE

MODEL 10 20 30 40 50

B B T B T B T B T

B [mm] 550 550 550 550 550 550 550 550 550

H [mm] 840 840 840 1240 1240 1540 1540 2040 2040

Figure 11 - Inlet vibration-damping joint.

49


0108-6180511-rev.0


Delivery outlet dimensions on exhaust air, BLE

371

120°

37

340

1413,2

14 14

398,2

368

551,5

15

466

268

60°

412

Fresh air intake hood dimensions, CAR

Figure 12 - Delivery cowl.

Figure 13 - Intake hood .

50


0108-6180511-rev.0


100

3055

030

610

30 30 L

6049

060

60

10

10

60120

Fresh air intake damper dimensions, HSR

MODEL 10 20 30 40 50

B B T B T B T B T

L [mm] 900 900 900 1300 1300 1600 1600 2100 2100

51


0108-6180511-rev.0


Water integration coil manifold position and diameter

379

243,5

5553838555

950

167,5

MODEL 10 20 30 40 50

B B T B T B T B T

IN-OUT [in] 1” GAS 1” GAS 1” GAS 1” GAS 1” GAS

TABLE 12 - Water integration coil manifold diameter.

CASE 2: RH connectors side

CASE 1: LH connectors side

52


0108-6180511-rev.0


Water direct expansion integration coil piping position and diameter

548 50 50 548150

226,5

MODEL 10 20 30 40 50

B B T B T B T B T

REFRIGERANT R407C

Inlet [mm] 12 12 12 12 12 12 12 12 12

Outlet [mm] 18 18 18 22 22 22 22 22 22

REFRIGERANT R410A

Inlet [mm] 12 12 12 12 12 12 12 18 18

Outlet [mm] 18 18 18 22 22 22 22 22 22

Table 13 illustrates the inlet and outlet diameters of the direct expansion

integration coils, both for refrigerant R407C as well as refrigerant R410A.

TABLE 13 - Water direct expansion integration coil piping diameter.

CASE 1: LH connectors side

CASE 2: RH connectors side

53


0108-6180511-rev.0


L

1000

L

1000

Minimum operative spaces

All operative spaces necessary for the following must be checked before starting installation:• position of the fresh and exhaust air channels;• passage of electrical power supply cables;• installation of parts (three-way valves, condensate discharge trap, etc.) without which the correct functioning of the unit cannot be guaranteed;• correct maintenance and cleaning operations.The fol lowing diagram i l lustrates the necessary spaces for the correct installation of the unit.In particular (see figure 14 below):

• a space of at least 200 mm must be available in correspondence with the condensate discharge in order to carry out the trap (more detailed instructions can be found on the label attached to the discharge);• for ordinary maintenance (visual inspection, replacement and cleaning of filters) a space of at least 1000 mm (indicated with L in the diagram) must be available. In the event accessories such as electric pre-heating coils direct expansion or water post heating coils must be fitted or replaced, the available space on the inspection panel side, must be equal to the width of the machine plus 1000 mm: - Ordinary maintenance

L = 1000 mm - coil introduction, removal:L = machine width + 1000 mm• a space of at least 400 mm is required in correspondence with the water coil manifolds to be able to install the three-way valves and related servo controls.• a space of at least 1000 mm is required for maintenance operations or replacement of the fans in relation to their inlets.

Figure 14 - Operative spaces.

54

The HRC unit is equipped with:• an adhesive plate that indicates the mo-del's main technical data, nominal air flow rate, efficiency of the heat recovery unit, electrical data and performance of possi-ble coils (see figure 15);• an adhesive plate indicating, in addition to the model, the gross weight and the cu-stomer.If the machine is not equipped with Regu-lation, and therefore it is not possible to apply the CE mark on it, the label will be the same as that illustrated in figure 16. Each HRC unit is identified by means of a serial number on the plate.Both labels will be positioned on the ins-pection side, in correspondence with the control panel if present, or the electrical wiring box.The serial number must be quoted for any future reference and any communication with FAST S.p.A..

Rating plates


0108-6180511-rev.0


Figure 16 - label of the HRC model without Regulation .

Figure 15 - Label of the HRC model with Regulation .

55


0108-6180511-rev.0


PackagingBefore installation and use, the packaging of the unit and all parts supplied with it must be completely removed.The units are supplied packaged with polyethylene film and resting on wooden feet. For transport reasons, some accessories tra-vel separate from the unit.

WARNING!The packaging of the unit must be disposed of in accordance with the present laws.

TransportIn order to transport the unit safely, refer to the weight indication on the rating plate on each unit.In any case, transportation must be carried out with the following precautions: • the unit and possible accessories must not undergo violent knocks so as not to com-promise the integrity of the structure and internal parts;• the unit and possible accessories must be suitably secured to the transportation sur-face by means of cords or any other means that prevent its movement;• during transport, the unit and possible accessories must be protected so as to pre-vent that the protruding parts, such as the coil connectors, condensate discharges, electrical components, etc., are knocked;• the load must be protected against bad weather during transport.

WARNING!Make sure the unit cannot move during transport. Any move-ment that could cause an acci-

dent must be avoided by means of suitable restraining means.

Receipt and warehousingOn receipt of the goods, check that they have not undergone damage and that they correspond with that indicated on the ac-companying documents. Possible damages or incomplete delivery must be timely indi-cated on the accompanying document. The unit can be stored in an area protected from weather with temperatures from -20°C to a maximum of +70°C.On receipt of the unit an initial visual control

must be made to check:• all parts are present;• there is no damage to the unit and possible accessories. • the integrity of the manifolds of possible finned coils and condensate discharges;• that possible hydraulic connectors are pro-tected with the special plastic caps. If this is not so, make sure they are suitably closed;• that the direct expansion coil connectors are hermetically sealed. If this is not so, make sure they are suitably closed;• the integrity of the panelling;• the integrity of the electric panel and the electrical and electronic components.

HandlingIn order to safely lift and position the unit and possible accessories, refer to the weight indications present on the rating plate or in the present manual.The lifting of the unit and possible accessories must be carried out using mechanical means and in accordance with the present health and safety standards. The unit can be handled both by fork-lift or by crane. the machine should ideally be han-dled packed.

Lifting with fork-lift truckIf a forklift is used, make sure it is of sui-table capacity and that the forks are of sufficient length. The unit must be lifted by positioning the forks of the forklift as indi-cated in figure 17. Make sure that the unit is securely balanced.

Lifting with craneLifting must be carried out in accordance with the diagram in figure 18 following the indicated instructions Use a lifting beam or bar, cords of suitable capacity (not chains), 42 mm (1” 1/4) diameter tubes that must be inserted into the holes at the base of the machine (the tubes are not supplied); block the ends of the tubes with pegs or split pins making sure that the cord does not slip off. Make sure that the unit is securely balan-ced.

WARNING!Use suitable personal protective equipment (PPE) during handling operations.

Site storageSite storage must be made with the following precautions:• the unit and possible accessories must be stored under cover and protected against accidental knocks;• the unit must be protected against dust.

WARNING!The unit must not be used as a support for persons or other objects.

Receipt, warehousing and handling

56


0108-6180511-rev.0


The forks of the fork-lift truck must protrude bu at least 50 mm

Wooden feet Wooden feet

Figure 17 - Lifting with forklift.

Peg

42mm diameter tube

Figure 18 - Lifting with crane.

57


0108-6180511-rev.0


Installation

WARNING!Use suitable personal protective equipment (PPE) during installation operations

WARNING!Installation and supplementary maintenance must be carried out by trained personnel in ac-

cordance with the present laws.

The unit must be installed in accordance with the operative space indicated in figu-re 14 The surface on which the unit rests must be flat and sturdy, suitable to support the weight when operating.

Aeraulic connections

WARNING!It is prohibited to start the ma-chine if the fan inlets are not ducted or are not protected by

an accident-prevention system

The circular flange accessory can be easily fitted in correspondence with the rectan-gular inlet using self-tapping screws.Sizes equipped with two parallel fans for each flow of air, require two circular flan-ges for the delivery and intake. The following should be carried out for in-stallation:• arrange suitable brackets to support the channelling so as to avoid that their weight overloads the recovery unit;• connect the delivery and intake ports to the channels with vibration-damping joint in between (canvas). The vibration-dam-ping joint must be secured to the panel with self-tapping screws making sure that the canvas joints are taught when run-ning;• arrange an earth cable that acts as a bri-dge on the anti-vibration joint to guaran-tee the equipotential connection between the channels and the recovery unit; • for models with two parallel delivery and intake fans, connection to the channelling must be carried out as illustrated in figure 19;

• before connecting any bends or branches, etc., set out the delivery channel with a straight section with a length of at least 2.5 times the shorter side of the channel A, and avoid that the channelling has an incline greater than 7° (figure 20) to avoid drops of the fan's performance.

Hydraulic connections con-densate dischargeThe condensate collection tank has 1” G UNI 338 threaded outlets.A discharge system must foresee a suitable drain-trap to:• allow the free discharge of the conden-sate;• prevent the undesired entry of air in va-cuum systems;

• prevent the infiltration of odours or in-sects.The lower part of the trap should have a discharge plug or should in any case allow easy dismantling for cleaning.The instructions for the dimensioning and execution of the trap are as follows (see figure 21):

H1 = 2P H2= H1 / 2

where P is the pressure of the water co-lumn expressed in mm (1 mm w.c. = 9.81 Pa).

Amax 7°

min 2,5·A

max 7°

max 10° AA

A

Figure 19 - Channelling for two parallel fans.

Figure 20 - Diagram of divergent channelling section.

Figure 21 - Trap dimensioning diagram.

A

max 7°

min 2,5·A

Amax 7°

min 2,5·A

max 7°

max 10° AA

A

58


0108-6180511-rev.0


Water coil connectionThe diameter of the direct expansion coil connection pipes are indicated in table 12 on page 51.All water coil manifolds have threaded male connectors for the entrance and exit of water. For correct installation follow the simple indications below:• anti-freeze devices should be present in the event of adverse weather conditions;• the course of the piping must be such so as not to create obstacles in the event the coil must be removed and so as not to com-promise inspection and maintenance of the unit and possible accessories;• arrange suitable brackets to support the piping so as to avoid that their weight over-loads the recovery unit;• when screwing together the manifolds and hydraulic circuit, avoid stresses that could damage the coil manifolds; • provide a stop valve to isolate the coil from the rest of the circuit in the even it must be disconnected from the hydraulic circuit;• for the connection of water feed pipes, follow the indications on the "WATER INLET" and "WATER OUTLET" plate on the outside panelling;• fit an air bleed valve on the highest sec-tion of the circuit and a water discharge valve on the lowest section of the circuit;• once the connections have been made, position the external rubber seal flush with the panelling to avoid air seepage.

WARNING!To avoid burns during the hea-ting function, the piping must be carefully insulated with sui-

table material as far as the panelling.

Connection of the direct expansion coilsThe diameter of the direct expansion coil connection pipes are indicated in table 13 on page 52.The coils are supplied with connections hermetically sealed and pressurised with inert gas.For correct installation follow the simple indications below:• the course of the piping must be such so as not to create obstacles in the event the coil must be removed and so as not to com-promise inspection and maintenance of the unit and possible accessories;

• the course of the piping must be such so as to favour the return of oil to the com-pressor;• arrange suitable brackets to support the piping so as to avoid that their weight over-loads the recovery unit;• provide a stop valve to isolate the coil from the rest of the circuit in the event it must be disconnected from the cooling circuit;• once the connections have been made, position the external rubber seal flush with the panelling to avoid air seepage.• the performance of the coil declared in the present manual could undergo changes in the event that the connection pipes to a condensing only unit cause excessive pres-sure drops of the refrigerant.

WARNING!To avoid burns, the piping must be suitably insulated with suitable material up to

the panelling.

Electrical connections earth

WARNING!The electrical connections and wiring must be carried out by qualified personnel in accor-

dance with the present laws.

WARNING!Each electrical appliance must be connected to the earth of the system.

Use the connectors with the earth symbol to connect the earth of the unit and pos-sible accessories to the earth of the bui-lding.

Mains power supply connec-tion

WARNING!Make sure that the characteri-stics of the mains power sup-ply are compatible with the

electrical characteristics indicated on the machine's rating plate.

The machine is equipped with a manual mains cut-out device.

HRC without Regulation accessory:In this case it is necessary to make a con-nection with the inverters of the fans in accordance with the layout in figures 22 and 23 on the following page, making sure to fit a thermomagnetic differential switch upstream (one for each fan). Figure 22 re-fers to models in which a single inverter is present for the replacement air fans and one for the exhaust fans (the indicated connection is made for each of the inver-ters). Figure 23 refers to cases in which two inverters are present for the fresh air fans and two for the exhaust fans (in this case also a connection must be made both for the inverters of the delivery fans as well as the exhaust fans).The documents related to the inverter is supplied along with the machine. As far as the electric heating coil is concerned, re-fer to the enclosed diagram supplied with the unit.

HRC with Regulation accessory:The wiring diagrams of the electrical panel are supplied along with the machine.

Electrical connections: electric heating coils

WARNING!Make sure that the characteri-stics of the mains power supply are compatible with the electri-

cal characteristics indicated on the part's rating plates.

Carry out the following instructions for the connection of the electric heating coil:• fit upstream a suitable protection with a thermomagnetic differential switch;• always connect a safety thermostat to guarantee the cut out of the electric hea-ting coilpower supply in the event of ove-rheating; • the safety thermostat must be in series with the regulating thermostat (not sup-plied);• the power supply of the coil must be sla-ved to the function of the fans;• always connect the earth wire of the electric heating coil to the terminal inside the electric box.The wiring diagrams are supplied along with the machine.

59


0108-6180511-rev.0


M

TUO 1PJ

U WV EP

EP NL LORTNOC

5 6 7 8 4 3 2 1 A G1

B V1

61J6J3J2PJ

NI

L N%01±V 032~ 1

zH 06 ÷05

V 01 - 0+

M

TUO 1PJ

U WV EP

EP NL LORTNOC

5 6 7 8 4 3 2 1 A G1

B V1

61J6J3J2PJ

NI

L N%01±V 032~ 1

zH 06 ÷05

M

TUO 1PJ

U WV EP

EP NL LORTNOC

5 6 7 8 4 3 2 1 A G1

B V1

61J6J3J2PJ

NI

L N%01±V 032~ 1

zH 06 ÷05

V 01 - 0+

MASTER SLAVE

1 kΩ

Figure 22 - Inverter connection diagram for models with one inverter for the replacement fans and one for the exhaust fans.

Figure 23 - Inverter connection diagram for models with two inverter for the replacement air fans and two for the exhaust air fans.

60

Repositioning of internal components

All HRC units have been designed to easy as much as possible set-up and the perso-nalisation requested by the client.In particular, the position of the fans or that of the pre-heating and integration coils connections can be inverted.

WARNING!The position of the fans cannot be modified if the machine is equipped with a water integra-

tion or direct expansion coil. In this case the position of the delivery fan is in the lower part of the machine.

FansIf the position of the fans is not desirable, follow the indications below:• disconnect the electrical cables and dismantle the fans supporting panels by unscrewing the screws (the fan remains fixed to the panel);• refit the panel and fan in the desired position reconnecting the cables in accor-dance with the enclosed diagrams and using the cable holes in the structure.

Water or direct expansion heating or cooling coil If the position of the water or direct expansion heating or cooling coil con-

nectors is not desirable, follow the indi-cations below:• remove the inspection panel using the appropriate handwheels;• unscrew the coil fixing screws;• remove the coil and insert it with the manifold on the desired side;• tighten the screws and reposition the panels (obviously the panel with holes for the coil connectors follows the con-nectors).

WARNING!The direct expansion coil with lefthand connectors has a cir-culation different from that

of the righthand side. Therefore, when a decision is made to modify the position of the connectors, the accessory already present inside the machine is no longer correct.

Electric pre-heating coil If the position of the electric pre-heating coil connectors is not desirable, they can be repositioned. Nevertheless replace-ment is necessary as follows:• remove the inspection panels from both sides by unscrewing the screws;• disconnect the electric cables and unscrew the coil fixing screws;

• insert the same coil again in the desired direction;• tighten the screws, fit the wiring and reposition the panels.

WARNING!In the absence of water inte-gration or direct expan-sion coils, if the delivery fan

position is changed, the heating coil is consequently repositioned following the replacement air flow. The repositioning is carried out as described above.

Filters F7WARNING!In the absence of water inte-gration or direct expansion coils, if the delivery fan posi-

tion is changed, the F7 filters are conse-quently repositioned following the repla-cement air flow.In this case:• remove the inspection panel by unscrewing the screws;• unscrew the filter door frame screws;• remove the filter and introduce it in the desired position;• tighten the screws and position the panels again.


0108-6180511-rev.0


Figure 24 - Accessories repositioning.

61


0108-6180511-rev.0


First start-up

WARNING!make sure that all the indications in the present manual have been carried out before carrying out

the controls on the first start-up.

Before starting the recovery unit, check:• with a tester that the voltage on the terminals is 230 V ± 5%: if the voltage is subject to frequent changes, contact our Technical department for the choice of sui-table protections;• that the unit is correctly secured to the ground;• the connection of the unit to the building's earth;• the channel connections;• the connection of the condensate dischar-ge with the trap;• the insulation of the coil's supply pipes;• the absence of air in the water and direct expansion coils.

WARNING:Before starting, check that all the unit's panels are in place and fixed with the suitable screws.

Refer to the regulation manual for the set-ting of all parameters and for detailed infor-mation concerning the machine operations and control board.

Preliminary controls - electric partsBefore carrying out the controls in this pa-ragraph, make sure that the power supply line of the unit is disconnected upstream of the unit. Make sure that the disconnecting device is padlocked or that a suitable notice warning not use is applied to its handle.All operations must be carried out without voltage as follows:- move the main switch to the “0” position (OFF);- remove the panel of the electric panel;- make sure that the power supply cables are correctly dimensioned;- make sure that the recovery unit is ear-thed;- make sure that the screws that fix the wires to the electrical components inside the panel are tight so as to guarantee a good contact; - close the door of the electric panel;At this point power can be applied to the machine closing the line disconnector and moving the main switch of the machine to the “1” position (ON).

Starting and stoppingPress the “on/off” button on the micro pro-cessor or open the remote on/off contacts.Disconnect the machine on the main switch of the electric panel for long idle periods.

Start-upMove the main switch on the electric panel to the “ON” position. Proceed as follows de-pending on the machine model:

HRC without electronic regulator:Start-up will depend on how the connect and control of the various devices is chosen.

HRC with electronic regulator:Refer to the Regulation Manual supplied with the machine.

RunningIf present, the microprocessor control system of the recovery unit will regulate, depending on the foreseen option, the available air flow or head according to that previously descri-bed and in the Regulation Manual.

62

WARNING!Use suitable personal protective equip-ment (PPE) during maintenance operations

WARNING!Before accessing the unit for maintenance or cleaning ope-rations, make sure the unit is

disconnected from the power supply, that the supply can not be switched on again without the maintenance engineer's know-ledge and that the heat exchange coils are off.

WARNING!Take particular care when working close to finned coils because the fins are particu-

larly sharp.

WARNING!After finishing the maintenance operations, make sure that the panelling is correctly closed by

means of fixing screws.

The HRC series recovery units have been conceived to require less maintenance and to make each operation easy. Below are some simple instructions for correct maintenance of the unit. The maintenance program must in any case be carried out by a qualified tech-nician.

Ordinary maintenanceOrdinary maintenance consists in simple operations that should be carried out mon-thly as follows:- check the tightness of the fans fixing screws to the panels;- check that the machine's power supply cable has not undergone any alterations that could compromise its insulation;- make sure that the screws that fix the wires to the electrical components inside the electric panel are tight so as to gua-rantee an electrical connection; the same also goes for the earth connections.

Filters maintenanceThe cleaning of the filters is fundamental in order to maintain a high qualitative standard of air in the room. The synthetic filters fitted to the HRC unit can be rege-

nerated using compressed air or washing them in cold water. Proceed as follows to dismantle the filters: • remove the inspection panel with knobs;• remove the filters;• clean the filters;• reassemble al parts in reverse order.

NOTEContact the head offices for the supple-mentary maintenance of the recovery unit, condensate collection tank and heat exchanging coils.

Unit maintenance


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Unit disposal

The HRC series recovery units have been designed to guarantee continual opera-tions. The duration of some main parts depends on the maintenance to which it has undergone. At the end of their useful life, the HRC series units must be disposed of according to that foreseen by the present laws.If the unit is to be disposed of, the ope-

ration must be carried out by specialised personnel.The main materials that make up the HRC series units are:• galvanised sheet steel (panels, fans);• aluminium or aluminium alloy sheet metal (recovery unit, condensate col-lection tank, coil fins, dampers, electric motor body);

• copper (coil pipes, winding of the electric motors);• polyurethane foam (sandwich panels insulation).

PROBLEM CAUSE REMEDY1. INSUFFICIENT

AIR FLOW RATE

1. Blocked filters - Clean the filters

2. Blocked coils - Clean the coils

3. NO AIR FLOW

RATE

1. Power supply off - Check the presence of power

2. Electric motor blocked - Replace the electric motor

4. ABNORMAL

NOISE

1. Excessive flow rate - Reduce the flow rate

2. Fan bearings worn or defective - Replace bearings

3. Foreign bodies on the fans' impellers - Clean the impellers

4. MOISTURE

CARRYOVER

1. Trap blocked - Clean trap

2. No trap or incorrectly made - Correctly carry out a trap as indicated in the present manual

5. REQUIRED

TEMPERATURE NOT

ACHIEVED

1. Inlet temperature outside the foreseen limits - Check the water temperature

2. Air in the water coils - Bleed the coils

3. Insufficient water flow rate in the water coils - Increase the water flow rate

4. Insufficient coil inlet water temperature - See 5.1

5. Dirty surface of the recovery unit pack - Clean the surface of the pack

Diagnosis and fault solving


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I dati tecnici riportati sulla seguente documentazione non sono impegna-tivi. FAST si riserva la facoltà di apportare in qualsiasi momento tutte le modifiche ritenute necessarie per il miglioramento del prodotto.

Technical data shown in this booklet are not binding.FAST S.p.A. shall have the right to introduce at any time whatever modi-fications deemed necessary to the improvement of the product.

Manual printed on recycled paper.Manual printed on recycled paper.

FAST S.p.A. AIR TREATMENT35044 Montagnana (PD) - ItalyVia Luppia Alberi, 170Tel. (+39) 0429 806311 - Fax 0429 806340E-mail: [email protected]://www.fastaer.com

0108

-618

0511

-rev

.0

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