Giacomini GE556-6 Series Manual

M
etering systeMs
0878EN 07/2021
H
eat interface unit witH electronic regulation and
ge556Y411-ge556Y412
double Heat excHanger
ge556-6
series
Description
The GE556Y411 and GE556Y412 heat interface units (HIU) allow the
metering of heat energy consumption for heating and the production of
DHW (Domestic Hot Water) in modern autonomous systems with centralised
heat production (e.g. district heating).
The configuration with two heat exchangers in parallel provides the
following advantages:
• parallel and non-intermittent handling of the domestic hot water and
heating functions;
• higher safety, the heating circuit is a sealed pressurised system should
there be any leaks within property only a small amount of water will be
discharged.
The management of the HIUs parameters is completely electronic. This
allows significant energy savings, minimizing the flow demand from the
primary side and reducing the return temperature.
The various parameters can be set via remote control which also performs
the function of programmable chronothermostat.
Versions and product codes
Heating side
Product code Type
power
Heating and
GE556Y411 24,5 kW
DHW production
Heating and
GE556Y412 24,5 kW
DHW production
Remote control and external temperature probe included with HIU
Completion codes
The following components can be installed on each HIUs:
• Thermal energy meter of the GE552 series
• Domestic water meters of the GE552-2 series
• Template with 7 shut-off valves and system connections Ø 22 mm:
code GE551Y085
• Template with 7 shut-off valves and system connections 3/4":
code GE551Y086
Note.
Use energy meters approved in accordance with the standardized
"flow disturbance elements" and provided for by the EN 1434 for null
rectilinear section upstream and downstream of the meter, such as the
GE552Y122.
047U57768
GE556Y411 / GE556Y412
DHW heat exchanger Template
rated power with valves
GE551Y085
56 kW
GE551Y086
GE551Y085
67 kW
GE551Y086
Main features
• Connections 3/4".
• Electronic thermoregulation with Set-point, to manage the DHW
temperature and heating temperature.
• Remote control with chronothermostat function to manage the parameter
(for single zone), with display.
• Multizone additional control by the free contact on the electronic board
(additional thermostats to be ordered separately).
• External temperature probe for climatic compensation.
• Double heat exchangers in parallel configuration: heating and DHW
production, with priority for DHW production.
• Flow switch for priority of DHW production.
• Expansion vessel, safety valve and high efficiency circulator (15/7), comply
with ErP Directive (2009/125/EC).
• Motorized three-way priority valve on the delivery of the primary side.
• Motorized two-way modulating valve on the return of the primary side.
• Filter and manual air vent valve on the primary side.
• Safety pressure switch for low pressure on the primary side.
• Heat exchanger and fully insulated piping.
• Painted sheet metal cabinet (RAL9010), with key locking.
Technical data
• Max. working temperature: 90 °C
• Max. working pressure: primary circuit: 10 bar
DHW secondary circuit: 10 bar
heating secondary circuit: 4,5 bar
Warning.
Max. working differential pressure for the primary side = 4 bar
(priority valve)
• Temperature range of the secondary heating circuit:
low temperature 25÷45 °C
high temperature 25÷85 °C
• Temperature range of the secondary DHW circuit: 30÷60 °C (Set-Point 50 °C)
• Nominal flow rate on primary circuit: 850l/h @ 80 °C for 56 kW
Warning.
The satellite can be used in closed boiler rooms for operation with
non-aggressive fluids (water, glycol-based water in compliance with
VDI 2035/ÖNORM 5195).
1030 l/h @ 80 °C for 67 kW
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