1
0548EN
August 2018
M
etering
systeMs
H
eat
I
nterface
U
nIt
w
/
Heat
excHanger
for
HeatIng
ge556Y171 (ge556-1
serIes
)
047U53338
Technical data
• Max. working temperature: 90 °C
• Max. working pressure: 16 bar
Warning.
Maximum differential pressure for the primary side = 4 bar
• Maximum working pressure of the heating secondary circuit: 3 bar
(safety valve setting)
• Nominal primary flow: 670 l/h @ 80 °C for 17,4 kW
Warning.
The HIU can be used in closed boiler rooms for operation with non-
aggressive fluids (water, glycol-based water in compliance with VDI
2035/ÖNORM 5195).
Description
GE556Y171 is an Heat Interface Unit (HIU) for heating production; it is fed
by means of hot water from centralised boiler plant (e.g. district heating).
Versions and product codes
Product code
Type
Heat exchanger nominal
power [kW]
Jig with valves
Heating
SHW
GE556Y171
Heating
17,4
-
GE551Y081
GE551Y083
Main features
• Painted (RAL9010) steel cabinet, for external installation, with key lock.
• Heat exchanger for the heating function.
• Heating handling with controlled temperature.
• Spacer for the meter.
• Expansion vessel, safety valve and high efficiency circulator (15/6), all comply
with ErP Directive (2009/125/CE).
• Motorised zone valve for heating.
• 3/4“ connections.
• Dynamic balancing valve, R206A series.
GE556Y171
