Modular Heat Interface Units for metering of thermal energy consumptions in autonomous heating and domestic hot water production (DHW) systems with centralized heat production (e.g. teleheating).
The HIUs can be configured based on the various system requirements, with primary circuit connections from top or bottom and a variety of exchangers for domestic hot water production.
The versions available are:
- standard: for low or low/high-temperature heating systems;
- compact: for high-temperature heating systems.
Main characteristics
- Hydraulic connections: telescopic system with G 3/4”F swiveling flat-seat nut
- Primary circuit inlet: choice of top or bottom inlet
- Priority valve for domestic water production
- Thermostatic control valve for domestic water production
- Compact differential pressure control valve (40÷70 kPa) preset at 50 kPa
- Water hammer arrestor for domestic water circuit
- Insulation with polypropylene foam shell
- Fit for installation of thermal energy meter and domestic cold and hot water meter by replacing the brass spacers
Technical data
- Max. working temperature of primary and secondary circuit (heating and domestic hot water): 90 °C
- Max. working pressure of primary circuit: 10 bar
- Max. differential pressure of primary circuit: 2 bar
- Max. differential pressure setting allowed for the differential pressure control valve: 50 kPa
- Max. working pressure of domestic hot water circuit: 10 bar (min 2,5 bar)
- Temperature range of heating secondary circuit: 20÷70 °C (Set-point 45 °C)
- Temperature range of domestic hot water secondary circuit: 20÷70 °C (Set-point 50 °C)
- 16, 26, 36 or 50-plate exchanger for domestic hot water production
Dimensions (L x H x W):
- Standard HIU with connections from the top + template + cover: 610 x 890 x 200 mm
- Compact HIU with connections from the top + template + cover: 485 x 890 x 200 mm
- Standard HIU with connections from the bottom + template + cover: 610 x 785 x 200 mm
- Compact HIU with connections from the bottom + template + cover: 485 x 830 x 200 mm
MAIN COMPONENTS OF THE PRODUCT CODES:
- SM556A10100: primary connections from top + 16-plate exchanger (34 kW) + low temperature heating (standard version) + without thermostatic by-pass*
- SM556A101B0: primary connections from top + 16-plate exchanger (34 kW) + low temperature heating (standard version) + with thermostatic by-pass
- SM556A10200: primary connections from top + 16-plate exchanger (34 kW) + low/high temperature heating (standard version) + without thermostatic by-pass*
- SM556A102B0: primary connections from top + 16-plate exchanger (34 kW) + low/high temperature heating (standard version) + with thermostatic by-pass
- SM556A10C00: primary connections from top + 16-plate exchanger (34 kW) + high temperature heating (compact version) + without thermostatic by-pass*
- SM556A10CB0: primary connections from top + 16-plate exchanger (34 kW) + high temperature heating (compact version) + with thermostatic by-pass
- SM556A20100: primary connections from top + 26-plate exchanger (42 kW) + low temperature heating (standard version) + without thermostatic by-pass*
- SM556A201B0: primary connections from top + 26-plate exchanger (42 kW) + low temperature heating (standard version) + with thermostatic by-pass
- SM556A20200: primary connections from top + 26-plate exchanger (42 kW) + low/high temperature heating (standard version) + without thermostatic by-pass*
- SM556A202B0: primary connections from top + 26-plate exchanger (42 kW) + low/high temperature heating (standard version) + with thermostatic by-pass
- SM556A20C00: primary connections from top + 26-plate exchanger (42 kW) + high temperature heating (compact version) + without thermostatic by-pass*
- SM556A20CB0: primary connections from top + 26-plate exchanger (42 kW) + high temperature heating (compact version) + with thermostatic by-pass
- SM556A30100: primary connections from top + 36-plate exchanger (50 kW) + low temperature heating (standard version) + without thermostatic by-pass*
- SM556A301B0: primary connections from top + 36-plate exchanger (50 kW) + low temperature heating (standard version) + with thermostatic by-pass
- SM556A30200: primary connections from top + 36-plate exchanger (50 kW) + low/high temperature heating (standard version) + without thermostatic by-pass*
- SM556A302B0: primary connections from top + 36-plate exchanger (50 kW) + low/high temperature heating (standard version) + with thermostatic by-pass
- SM556A30C00: primary connections from top + 36-plate exchanger (50 kW) + high temperature heating (compact version) + without thermostatic by-pass*
- SM556A30CB0: primary connections from top + 36-plate exchanger (50 kW) + high temperature heating (compact version) + with thermostatic by-pass
- SM556A50100: primary connections from top + 50-plate exchanger (50 kW) + low temperature heating (standard version) + without thermostatic by-pass*
- SM556A501B0: primary connections from top + 50-plate exchanger (50 kW) + low temperature heating (standard version) + with thermostatic by-pass
- SM556A50200: primary connections from top + 50-plate exchanger (50 kW) + low/high temperature heating (standard version) + without thermostatic by-pass*
- SM556A502B0: primary connections from top + 50-plate exchanger (50 kW) + low/high temperature heating (standard version) + with thermostatic by-pass
- SM556A50C00: primary connections from top + 50-plate exchanger (50 kW) + high temperature heating (compact version) + without thermostatic by-pass*
- SM556A50CB0: primary connections from top + 50-plate exchanger (50 kW) + high temperature heating (compact version) + with thermostatic by-pass
- SM556B10100: primary connections from bottom + 16-plate exchanger (34 kW) + low temperature heating (standard version) + without thermostatic by-pass*
- SM556B101B0: primary connections from bottom + 16-plate exchanger (34 kW) + low temperature heating (standard version) + with thermostatic by-pass
- SM556B10200: primary connections from bottom + 16-plate exchanger (34 kW) + low/high temperature heating (standard version) + without thermostatic by-pass*
- SM556B102B0: primary connections from bottom + 16-plate exchanger (34 kW) + low/high temperature heating (standard version) + with thermostatic by-pass
- SM556B10C00: primary connections from bottom + 16-plate exchanger (34 kW) + high temperature heating (compact version) + without thermostatic by-pass*
- SM556B10CB0: primary connections from bottom + 16-plate exchanger (34 kW) + high temperature heating (compact version) + with thermostatic by-pass
- SM556B20100: primary connections from bottom + 26-plate exchanger (42 kW) + low temperature heating (standard version) + without thermostatic by-pass*
- SM556B201B0: primary connections from bottom + 26-plate exchanger (42 kW) + low temperature heating (standard version) + with thermostatic by-pass
- SM556B20200: primary connections from bottom + 26-plate exchanger (42 kW) + low/high temperature heating (standard version) + without thermostatic by-pass*
- SM556B202B0: primary connections from bottom + 26-plate exchanger (42 kW) + low/high temperature heating (standard version) + with thermostatic by-pass
- SM556B20C00: primary connections from bottom + 26-plate exchanger (42 kW) + high temperature heating (compact version) + without thermostatic by-pass*
- SM556B20CB0: primary connections from bottom + 26-plate exchanger (42 kW) + high temperature heating (compact version) + with thermostatic by-pass
- SM556B30100: primary connections from bottom + 36-plate exchanger (50 kW) + low temperature heating (standard version) + without thermostatic by-pass*
- SM556B301B0: primary connections from bottom + 36-plate exchanger (50 kW) + low temperature heating (standard version) + with thermostatic by-pass
- SM556B30200: primary connections from bottom + 36-plate exchanger (50 kW) + low/high temperature heating (standard version) + without thermostatic by-pass*
- SM556B302B0: primary connections from bottom + 36-plate exchanger (50 kW) + low/high temperature heating (standard version) + with thermostatic by-pass
- SM556B30C00: primary connections from bottom + 36-plate exchanger (50 kW) + high temperature heating (compact version) + without thermostatic by-pass*
- SM556B30CB0: primary connections from bottom + 36-plate exchanger (50 kW) + high temperature heating (compact version) + with thermostatic by-pass
- SM556B50100: primary connections from bottom + 50-plate exchanger (50 kW) + low temperature heating (standard version) + without thermostatic by-pass*
- SM556B501B0: primary connections from bottom + 50-plate exchanger (50 kW) + low temperature heating (standard version) + with thermostatic by-pass
- SM556B50200: primary connections from bottom + 50-plate exchanger (50 kW) + low/high temperature heating (standard version) + without thermostatic by-pass*
- SM556B502B0: primary connections from bottom + 50-plate exchanger (50 kW) + low/high temperature heating (standard version) + with thermostatic by-pass
- SM556B50C00: primary connections from bottom + 50-plate exchanger (50 kW) + high temperature heating (compact version) + without thermostatic by-pass*
- SM556B50CB0: primary connections from bottom + 50-plate exchanger (50 kW) + high temperature heating (compact version) + with thermostatic by-pass
* The thermostatic by-pass kit can also be ordered separately at a later time with code GE550Y040 (see completion codes).
COMPLETION CODES:
- GE551Y099: template with 7 shut-off valves, for standard low-temperature HIU
- GE551Y097: template with 7 shut-off valves, for compact high-temperature HIU
- GE551Y185: metal cover for standard HIU
- GE551Y194: metal cover for compact HIU
- GE550Y040: thermostatic by-pass kit for standard and compact HIU
- GE500Y261: pair of additional valves for delivery and return of high-temperature heating circuits, for HIU with low/high-temperature heating
- R473/R473M: thermo-electric actuator Normally Closed, for control of valves installed on HIUs
- GE552, GE552-W: thermal energy meter, M-Bus wired or Wireless M-Bus
- GE552-2: domestic hot and cold water meter
| Code | Size |  |
 |
BIM(revit) | CAD(dxf) | Certification |
|---|---|---|---|---|---|---|
| SM556A10100 | G 3/4"F | 1 | 0 | - | - | |
| SM556A101B0 | G 3/4"F | 1 | 0 | - | - | |
| SM556A10200 | G 3/4"F | 1 | 0 | - | - | |
| SM556A102B0 | G 3/4"F | 1 | 0 | - | - | |
| SM556A10C00 | G 3/4"F | 1 | 0 | - | - | |
| SM556A10CB0 | G 3/4"F | 1 | 0 | - | - | |
| SM556A20100 | G 3/4"F | 1 | 0 | - | - | |
| SM556A201B0 | G 3/4"F | 1 | 0 | - | - | |
| SM556A20200 | G 3/4"F | 1 | 0 | - | - | |
| SM556A202B0 | G 3/4"F | 1 | 0 | - | - | |
| SM556A20C00 | G 3/4"F | 1 | 0 | - | - | |
| SM556A20CB0 | G 3/4"F | 1 | 0 | - | - | |
| SM556A30100 | G 3/4"F | 1 | 0 | - | - | |
| SM556A301B0 | G 3/4"F | 1 | 0 | - | - | |
| SM556A30200 | G 3/4"F | 1 | 0 | - | - | |
| SM556A302B0 | G 3/4"F | 1 | 0 | - | - | |
| SM556A30C00 | G 3/4"F | 1 | 0 | - | - | |
| SM556A30CB0 | G 3/4"F | 1 | 0 | - | - |
| Code | Size | |
|
BIM(revit) | CAD(dxf) | Certification |
|---|---|---|---|---|---|---|
| SM556B10100 | G 3/4"F | 1 | 0 | - | - | |
| SM556B101B0 | G 3/4"F | 1 | 0 | - | - | |
| SM556B10200 | G 3/4"F | 1 | 0 | - | - | |
| SM556B102B0 | G 3/4"F | 1 | 0 | - | - | |
| SM556B10C00 | G 3/4"F | 1 | 0 | - | - | |
| SM556B10CB0 | G 3/4"F | 1 | 0 | - | - | |
| SM556B20100 | G 3/4"F | 1 | 0 | - | - | |
| SM556B201B0 | G 3/4"F | 1 | 0 | - | - | |
| SM556B20200 | G 3/4"F | 1 | 0 | - | - | |
| SM556B202B0 | G 3/4"F | 1 | 0 | - | - | |
| SM556B20C00 | G 3/4"F | 1 | 0 | - | - | |
| SM556B20CB0 | G 3/4"F | 1 | 0 | - | - | |
| SM556B30100 | G 3/4"F | 1 | 0 | - | - | |
| SM556B301B0 | G 3/4"F | 1 | 0 | - | - | |
| SM556B30200 | G 3/4"F | 1 | 0 | - | - | |
| SM556B302B0 | G 3/4"F | 1 | 0 | - | - | |
| SM556B30C00 | G 3/4"F | 1 | 0 | - | - | |
| SM556B30CB0 | G 3/4"F | 1 | 0 | - | - |
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