SLIMDomestic Hot Water Unit

Installation & user manual Store this manual with your unit

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Explanation symbols & abbreviations

Symbols

CAUTION, general safety remark

CAUTION, risk of electric shock

CAUTION, hot surfaces, risk of burns

Important note

Requirement of 230 Volt Alternating Current

Dispose component

Recycle component if possible

Wrench, manual tool

Drill, motorized tool

Manual operation, no tools needed

Abbreviations

DH 0C DHW kPa

DCW kg

VAC mm

VDC PN

Temperature in degrees

Celsius Pressure kiloPascal

Weight in kilograms

Distance in millimeters

Pressure class in Bar

“

District Heating

Domestic Hot Water

Domestic Cold Water

Volts Alternating Current Volts

Direct Current

Thread size in inch (ISO 228/1)

230 V

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Contents

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Overview

Dimensions

Schematic

Technical data

Application

General plumbing requirements

General wiring requirements

Installation

Commissioning

Service and inspection

Troubleshooting (end-user)

Troubleshooting (technician)

EC decleration

Note 18

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Overview

1 Heat exchanger2 Power plug3 Temperature sensor DH return4 Temperature sensor DH supply

5 Temperature sensor DHW6 Electronic controller7 Control valve DHW8 Flow sensor DCW

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DCW DHWDH

supply DHreturn

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Dimensions41

5mm

255mm

60 608027,5 4527,5

125mm

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Schematic

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Technical dataDescription Data Nominal primary supply temperature 800CMaximum primary supply temperature 900CDefault setpoint DHW supply temperature 550CMinimum primary supply temperature 550C * Primary connections ¾” Female / 18mm DHW connections ¾” Female / 18mm Maximal differential pressure 250 kPa Minimal primary differential pressure DH 30 - 50 kPa ** Pressure class DH circuit PN16 Pressure class DHW circuit PN10 Casing width 255mm Casing height 415mm Casing depth 125mm Weight (basic version) 5,2 kg Power input 100 - 230VAC

47 - 63Hz 0,31A MAX Power output 24VDC 0,5A 12W MAX

* Minimum required DH supply temperature is DHW setpoint + 50C with a minimum of 550C.** Depends on requested DHW output and available DH supply temperature.

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ApplicationThe SLIM Heat interface unit is used to provide hot water in properties connected to a district heating system.

Status indicator LEDGreen blinking: Normal conditionBlue blinking: Tapping conditionRed blinking: ErrorWhite continuous: Service mode (installer only)No LED: No power / switched off

Operation CAUTION!Components, pipes in and connected to the unit may be hot. The SLIM is designed for usage with centralized heating systems up to 900C. The pipes and components in the unit as well as the pipes and components outside of the unit can reach these temperatures. Contact may lead to burns.

The unit is equipped with a single wall plate heat exchanger. The heat exchanger transfers the heat from the heat distribution system to the domestic hot water. The electronic controller in the unit, together with electronic control valve, temperature sensors and flow sensor regulates the temperature of the hot water to its setpoint 45-600C.The unit has two DHW keep hot modes: Eco mode and Comfort mode (default). Default mode, settings, times and temperatures can be modified by the installer (during commissioning) using the special service software.

Eco modeThe Eco mode allows the heat exchanger to cool down after the last hot water draw off to conserve energy. It also has the option of keeping the heat exchanger hot for a limited period of time after the last hot water draw off. This provides more comfort in situations where regular hot water is needed within a certain period of time.

Comfort modeIn Comfort mode the heat exchanger and the DH supply pipe are always kept warm for instant hot water delivery. When in Comfort mode the unit only uses energy to compensate for the heat losses of the DH supply pipe and the isolated unit.

Legionella preventionTo prevent legionella from growing, the heat exchanger can be heated* every 24 hours for 1 hour. Default setting is ON (active).

*NOTE: for a correct thermal disinfection a District Heating supply temperature of 60°C is recommended. (minimal requirement is 55°C).

CAUTION! Hot waterThe hot water temperature is regulated to approximately 550C (or other setpoint). If there is a power outage during tapping conditions the unit will stop regulating the hot water temperature. This may lead to a hot water temperature that is higher or lower than the setpoint. Hot water can cause burns.

Status indicator LED

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General Plumbing RequirementsKeep following conditions in mind during installation:• The unit can only be used with closed heating systems up to a temperature of 800C. • The unit must be stored and installed in a frost free area.• The unit must not be exposed to direct sunlight.• Ambient temperature must be between +50C and +400C.• Humidity must be between 20% and 80%.• Temperatures of components in the unit and connected to the unit can reach high temperatures. Contact may

lead to burns.

Fitting and modificationsFitting the appliance and any controls to the appliance may only be carried out by a competent engineer. Any misuse or unauthorised modifications to the appliance or associated components and systems could invalidate the guarantee and may lead to serious injury or even death. The manufacturer accepts no liability arising from any such actions, excluding statutory rights.

District heating CAUTION!Components, pipes in and connected to the unit may be hot. The SLIM is designed for usage with centralized heating systems up to 900C. The pipes and components in the set as well as the pipes and radiators in the central heating installation can reach these temperatures. Contact may lead to burns.

Keep following conditions in mind during installation:• Maximum pressure supplied by the district heating network is 16 bar.• Maximum supplied temperature by the distict heating network is 900C.• Minimal supply temperature is 550C.

Domestic waterKeep following condition in mind during installation:• Maximum pressure supplied by the domestic water circuit is 10 bar.• All seals, joints and compounds (including flux and solder) and components used as part of the secondary

domestic water system must be approved.• It is highly recommended to fit a filter on the mains cold water line, to filter fine particles such as sand

from the cold water before it enters the heat exchanger. Blockages and malfunctions due to debris in the water are not covered under the warranty.

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General wiring requirementsThese instructions must be followed except for any statutory obligations. Component specific electrical information may also be supplied in support of these instructions.

FAILURE TO INSTALL APPLIANCES CORRECTLY COULD LEAD TO PROSECUTION.

CAUTION!Be sure to remove the power supply to the unit before starting any work and observe all relevant safety precautions. The unit uses electrical components (24VDC). These components must stay dry at all times. Touching these components can result in an electrical shock, burn, or electrocution.

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InstallationParts Supplied

10, 30 mm

NOTE: First fix bracket is sold seperately. Different types available.

Situation

1 2 3 4

1 Domestic cold water - in2 Domestic hot water - out3 District heating supply4 District heating return

Requirements

230 V Example

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Preparation unit

First fix rail positioning

140mm 58mm 58mm

469

mm

28m

m

SLIM

185m

m

158m

m

26m

m

128mm 128mm

10 mm

Mounting to a plywood wall: Minimal plywood thickness must be 18 mm. Make sure that the back wall is at least 50 mm wider than the unit to ensure a proper support. Make sure the drill markings are aligned and levelled. Drill holes of Ø4 mm on the marked locations 40 mm deep. 2 holes are drilled for the first fix rail and another 2 for the unit. Mount the first fix rail firmly to the wall using the enclosed screws.

Mounting to a concrete wall: Make sure the wall is robust and of good quality. Avoid hollow walls and make sure that the screws are not placed in the flushings of a brick wall. Drill holes of Ø10 mm on the marked locations 60 mm deep. 2 holes are drilled for the first fix rail and another 2 for the unit. Mount the first fix rail firmly to the wall using the enclosed screws and plugs.

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Connections

4x30 mm

Installation

NOTE: Please use the enclosed screws and plugs to mount the unit.

4x

10 mm

NOTE: Make sure the valves on the first fix rail bracket are in the closed position.

OR

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CommissioningFollow the steps shown below to commission the unit. If leakage or other faults should occur, go to chapter TROUBLESHOOTING.

1. Close all tapping valves in the residence.2. Check all coupling nuts for leakage. (nuts may

become loose during transport) 3. Make sure the electronic cables are not obstructed.4. Insert the power plug (B) into the power supply. The

LED should show a green blinking light (A).5. Slowly open the DH supply valve (C) and check for

leakage.6. Slowly open the DH return valve (D) and check for

leakage.7. Slowly open a DHW valve in the residence. Check to

see if the units LED shows a blue blinking light (B). Open the DHW valve completely when the system is fully vented. Leave it running for approximately 5 minutes. Check if the DHW temperature has reached its setpoint (default 550C) between 3 and 5 minutes.

8. Close the DHW valve in the residence. The LED will now show a green blinking light (B).

CAUTION!Parts and components may be hot or energized. Contact may lead to shock, burn or electrocution.B

A

C D

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Service and inspectionTo ensure proper functioning of the unit, it is advised to periodically inspect the installment. Contact your heat distribution company about the possibilities for service and inspection. Maintenance and repairs can be performed by recognized personnel only.

• Remove the power from the unit when performing maintenance and/or repairs.• Close the supply and return valve of the heat distribution network.• Close the supply and return valve of the unit.• Check the unit for dirt/leaks.• Check valve for pollution and clean if necessary.• Check the filter for pollution and clean if necessary.• When recommissioned, check the unit for the delivery of hot tap water and central heating.• The casing can be cleaned with a damp cloth. By no means use detergents of any kind.

CAUTION!The unit uses electrical components (24VDC). These components must stay dry at all times. Please use caution when handling these energized components. Touching these energized components can result in an electric shock, burn, or electrocution.

Away or on holidayDo not remove power from the unit. Do not switch of the unit during long absence or holiday. To prevent damage from frost in the piping of the unit or the distribution network one must, under no circumstances, close the shut-off valves of the unit and/or the distribution network. It is recommended to flush all water tapping points for at least 2 minutes after a long period of absence.

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Troubleshooting (end-user)LED indicatorGreen blinking: Blue blinking: Red blinking: White continuous: No LED:

Normal conditionDomestic hot water delivery condition ErrorService mode (installer only)No power / switched off

What can you do? CAUTION! Always take into account the safety of yourself and others when performing a troubleshoot.

In case of leakage:1. Close all valves connected to the unit.2. Contact your installer.

Tap water does not warm up:1. Check if the valves connected to the unit are open (levers are in the vertical position) and if the main

domestic water valve is open. If not, open the valves.2. Check if the unit is connected to the power supply.3. If the problem persists, contact your installer.

No domestic hot water:1. Check if the main valve is open. If not, open the main valve.2. If the problem persists, contact your installer.

WEEE Directive 2012/19/EU:

Dispose product properly according to local legislation.

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Troubleshooting (technician)

Complaint LED indication light Cause Solution

Coupling nut is loose Fasten coupling nut

Gasket is missing Place gasket

O ring is missing Replace temperature sensor

O ring is damaged Replace temperature sensor

Other components or pipes are showing leakage

Component or pipe is damaged Replace component or pipe

Check/open main water supply valve

Check flow sensor for contamination or obstruction

Check heat exchanger for contamination or obstruction

Supply and return valves are closed Open supply and return valves

Heat exchanger blocked Check heat exchanger for contamination or obstruction

LED does not light up Unit is not connected to power supply Connect the unit to the power supply

LED does not light up Power cables not properly connect to electronic regulator

Connect the power cables to the electronic controller

Green flashing LED Tapping flow rate is to low, minimal 1 L/min. has not been reached

Increase water draw off to at least 2 L/min. by opening the tap further.

Green flashing LED Flow sensor is not installed correctly or defective Check mounting direction of flow sensor, replace cable or replace flow sensor

Blue flashing LED Differential pressure or supply temperature of the district heating system is too low

Check supply temperature and differential pressure of the district heating system (clean DH filters)Check and connect all cable connections

Close all taps and valves in the residence. Green flashing LED should return after approximately 1 min.

Cables are in between unit and casing Keep cables free of any obstructions

Metal flap holding the heat exchanger in position is not closed

Close metal flap holding the heat exchanger into position

Electronics are not properly placed Check mounting of electronics

Rattling sound Red or green flashing LED Flow sensor not installed correctly Install flow sensor properly

Other errors Contact your supplier

No tapping water

Leakage

Close all valves and close the main water supply valve.Coupling nut shows leakage

Temperature sensor shows leakage

Casing will not close properlyCasing does not close properly

Other faultsIt is normal for the unit to generate a light noise during tapping. The regulator valve can also make a light humming sound

No tapping water No water pressure

Domestic hot water not at the right temperatureDomestic water does not warm up

Red flashing LED Possible defect in electronics, electronic cables, temperature sensors or regulator valve

Guarantees and After SalesGUARANTEESHIUs carry the following guarantees as standard:

FACTORY WARRANTY12 Months Parts and labour - Parts or labour proven to be defective will be replaced / repaired free of charge for a period of 12 months from date of purchase, provided the HIU is installed by a qualified engineer within 6 months of date of purchase.24 Months Parts Only - Parts proven to be defective will be supplied free of charge (for fitting by others) for a period of 24 months from date of purchase.(Replacement of parts under warranty does not extend the duration of the warranty)Any other costs are not covered by this warranty. All other damages of any nature whatsoever and howsoever arising, are expressly excluded from this guarantee.

The warranty conditions above only apply: In the UK only on items provided exclusively by Thermal Integration. If the product is installed by a Thermal Integration approved engineer in compliance with the installation instructions. If the installation complies with all current and relevant building regulations and codes of practice. If the product is used and maintained exclusively according to the manufacturer's instructions and proof of periodic inspection /maintenance by a Thermal Integration approved engineer is available. If the returned item is accompanied by a fully completed Thermal Integration Warranty Return Form.

Excluded are defects caused by: Failure to maintain in accordance with manufacturers instructions Improper use Any attempt at repairs / maintenance by un-qualified persons Lightning, fire or natural disasters. Deterioration and / or pollution from the district heating system or water network, either domestic hot water or heating side. PH values of the primary medium being less than 7.5 or greater than 9.0. Harmful additives to the heating water.

Report any faults to your installer, service engineer or Thermal Integration directly. Faulty parts must be accompanied by a fully completed Thermal Integration Warranty Return form, to be returned to Thermal Integration. Returned items remain the property of Thermal Integration Ltd.The Thermal Integration Warranty Return Form can be found in the manual and on www.heatweb.com. Returns are not accepted unless expressly agreed in writing.Transport risk of returned items lies with the sender. The shipping of replacement parts are the responsibility of the supplier.

COMMISSIONINGThermal Integration offer commissioning services across the UK. The service includes:

The fulfillment of the defined commissioning instructionsCompletion and return of site wide commissioning paperworkRectification of any HIU problemsConfirmation of HIU performance to contract specificationsEngineer travel and subsistence

Commissioning rates are charged on a whole day basis, and it is the responsibility of the client to ensure:

Safe access to properties and HIUsCorrect operation of central plant with delivery of heat to HIUs at specified temperatures, flow and pressuresAll pipework has been correctly tested and flushedCredit on billing system to enable security valve

A minimum 2 weeks notice is required in writing to Thermal Integration before the requested commissioning date.

SERVICETechnical assistance and engineer backup can be obtained by calling our offices:

Technical, Commercial Sales and Operations: 0845 2411441 Specflue Sales: 0333 9997974

FURTHER INFORMATIONThe Heatweb Wiki website at www.heatweb.com/wiki contains information on all aspects of HIU design, function, and servicing, and is always the best place to visit for additional documentation or how to guides. 17

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EC Decleration of conformity

EC DECLARATION OF CONFORMITY

DIRECTIVE 2004/108/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCILof 15 December 2004 on the approximati on of the laws of the Member States relati ng to electromagneti c compati bility and repealing Directi ve 89/336/EE

DIRECTIVE 2006/95/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCILof 12 December 2006 on the harmonisati on of the laws of Member States relati ng to electrical equipment designed for use within certain voltage limits

EC Declarati on of Conformity Number: EC267A

Equipment or protecti ve system: Electronic DHW system, Model: EcoAdvance Instant I

Manufacturer: HSF B.V.

Address: Marketi ng 23, Duiven, The Netherlands

This equipment or protective system and any acceptable variation thereto is specified in the schedule to this declaration and the documents therein referred to.

The examination and test results are recorded in Technical file no. 267A. Compliance with the Essential Requirements of the above specified directives has been assured by compliance with:

EN 61010-1 : 2010 EN 55014-1 : 2006 + A1 : 2009 + A2 : 2011 EN 61000-6-2 : 2005

The marking of the equipment or protecti ve system shall include the following:

The CE mark was first applied in: 2016

Duiven, Feb 1, 2016

HSF B.V.

M. van de VeenManaging Director

© This Declarati on may only be reproduced in its enti rety and without any change

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Notes