The Logic heat interface unit is the latest ‘intelligent’ range of Logic HIUs from Ideal.The Logic HIU is the complete solution for instantaneous hot water production and

space heating control.

This is a direct wall mounted HIU, providing 50kW indirect instantaneous priority Domestic Hot Water (DHW). Central Heating (CH) is dependent

upon the primary system design and pump specifi cation.

HEAT INTERFACE UNIT - 50 DIRECT MEDIUM TEMPERATURE (MT).

LOGIC HIU.

• Single plate design hydraulically separates the domestic water with the space heating supplied directly from the central primary supply

• Internal electronic control unit with LCD display

• Can be set to modulate the heating fl ow circuit for greater effi ciency and to compensate for changes in the external environment

• Complete with a heating support pump, as standard, including a pump bypass loop in case of complete radiator TRV shutdown

• Compact and lightweight• Fully insulated EPP front cover• Includes differential pressure control valve

(DPCV)* supplied and fi tted to the base of the unit

• Ability to pre-heating of the DHW exchanger

Ideal BoilersPO Box 103, National AvenueKingston upon HullEast Yorkshire, HU5 4JN

T: 01482 492251ideal@idealboilers.com

WWW.IDEALBOILERS.COM

This is a direct wall mounted HIU, providing 50kW indirect instantaneous priority Domestic Hot Water (DHW). Central Heating (CH) is dependent

upon the primary system design and pump specifi cation.

• Single plate design hydraulically separates the domestic water with the space heating supplied directly from the central primary supply

• Internal electronic control unit with LCD display

• Can be set to modulate the heating fl ow circuit for greater effi ciency and to compensate for changes in the external environment

• Complete with a heating support pump, as standard, including a pump bypass loop in case of complete radiator TRV shutdown

* Not shown on components illustration.

ABA B

CC

65mm

550mm

450mm

65mm65mm

Depth inc. cover: 265mm

** After shut-off valves are installed the connections become a female 3/4’’.

CONNECTION A B C

Thread G¾” G½” G1”**

OPERATION.LOGIC HIU 50 DIRECT MT.

211103 v3

Hydraulic Characteristics - Heating Function

SATK 20103 - low temperature unit - UPS 15-60 pump settings

Kv = 2.04 m³/h

0

10

20

30

40

50

60

Flowrate -l/s

Pre

ssure

loss

-kP

a

3

2

1

0

10

20

30

40

50

60

0 0.1 0.2 0.3 0.4 0.5 0.6

0 0.1 0.2 0.3 0.4 0.5 0.6

0 0.1 0.2 0.3 0.4 0.5 0.6

Flowrate -l/s

Pre

ssure

loss

-kP

a

Kv = 2.12 m³/h

3

2

1

Flowrate - l/s

50

10

1

0.5

20

30

2

3

5

Pre

ssure

loss

- k

Pa

Kv = 2.20 m³/h

0

10

20

30

40

50

60

Flowrate -l/s

Pre

ssure

loss

-kP

a

Kv = 2.12 m³/h

3

2

1

SATK 20203 - medium temperature unit - UPS 15-60 pump settings

SATK 20303 - high temperature unit

SATK 20403 - high temperature unit - UPS 15-60 pump settings

0.04 0.06 0.08 0.1 0.2 0.3 0.4 0.5

Maximum working pressure: 10 bar

Maximum temperature 85°C

Max. Percentage of glycol 30%

Max. Recommended primary circuit flow rate

1.2 m³/h

PRIMARY PERFORMANCE.

The temperature setting operates on the principle of set point regulation and can be fixed within application limits.

HEATING.

Heating Set Point 50 to 75°C

Nom. heating net output As primary and heating circuit controls permit

Heating circuit Maximum pressure rating: 10 bar as primary and heating circuit controls permit

Pump UPS 15/60

Pump bypass setting 0.45 bar

Heating control circuit VOLT FREE

The DHW function takes priority over the heating function controlled by the DHW priority flow switch.

Power supply 230 V (ac)±10% 50 Hz

Max. Power consumption 105 W

Protection class IP 40

Actuator Stepper 24 V

Probes NTC 10 kΩ

ELECTRICAL.

Frame RAL 9010 sprayed steel

Protective shell cover EPP (Expanded polypropylene)

Components Brass BS EN 12165 CW617N

Pipes Stainless steel

Exchanger Brazed stainless steel

CONSTRUCTION.

Set Point DHW temperature 42 to 60°C

Max. Domestic hot water pressure 10 bar

DHW circuit max. flow rate 18 l/m (0.3 l/s)

Min. flow rate to activate domestic flow sensor

2.7 l/m ±0.3

Max. Differential pressure on domestic water modulating valve

Δp 0.9 bar

Min. Differential pressure on domestic water modulating valve

Δp 0.35 bar

Nom. DHW heat exchanger net output

50 kW - Logic HIU 50 Direct MT

Flushing By-pass P

CF Echo II P

CF Ultramaxx V P

ACCESSORIES.

Heat Interface Unit MT P

Primary ball valve set P

Central heating flow & return valves P

DHW inlet and outlet connection valves P

Differential pressure control (DPC) P

INCLUDED AS STANDARD.

UIN PRODUCT NAME METERING OPTIONS

211095 Logic HIU Direct MT HIU only, meter not included

211348 Logic HIU Direct MT Factory fitted, CF Echo 11 MbBus 1

211352 Logic HIU Direct MT Factory fitted, CF Ultramaxx V MBus PS

HYDRAULIC CHARACTERISTICS HEATING - PRIMARY SIDE.

DOMESTIC HOT WATER - DHWINCLUDING OPTIONAL PRE HEAT FUNCTION.

DOMESTIC HOT WATER OUTPUT.

1,100

1,000

800

600

400

200

0 0 200 400 600 800 1,000 1,200 1,400 1,600 1,800

Domestic Hot Water Flow Rate @ 48˚C - l/h

Pri

mary

Flo

w R

ate

I/h

LOGIC HIU 75 INDIRECT

LOGIC HIU 50 INDIRECT

Pri

mary

Flo

w R

ate

I/h

1,500

1,400

1,200

1,000

800

600

400

200

0 0 100 200 300 400 500 600 700 800 900 1,000 1,100

Domestic Hot Water Flow Rate @ 48˚C - l/h

Primary flow temperatures

55˚C

60˚C

65˚C

70˚C

75˚C

80˚C

85˚C

55˚C

65˚C

75˚C

85˚C

Primary flow temperatures