Giacomini GE556-2 Series Manual

M
etering systeMs
0864EN March 2017
S
atellite with electronic regulation
ge556Y404 (ge556-2
GE556Y404

Description

The user satellite GE556Y404 allows the metering of heat energy consumption
for heating and the production of SHW (Sanitary Hot Water) in modern
autonomous systems with centralised heat production (e.g. district heating).
The management of the satellite parameters is completely electronic.
The various parameters can be set via remote control which also performs the
function of programmable chronothermostat.
The satellite allows significant energy savings, minimizing the flow demand
from the primary side and reducing the return temperature.

Versions and product codes

Heating side
Product code Type
power
Heating and SHW
GE556Y404 26 kW
production

Completion codes

The following components can be installed on each satellite:
• Thermal energy meter, GE552 series.
• Sanitary hot water meter, GE552-2 series.
• Template with 6 shut-off valves and 3/4" connections: code GE551Y074
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.

Main features

• Electronic thermoregulation with SET POINT, to manage the SHW
temperature and heating low temperature.
• Heating high temperature performance depends directly from primary
working conditions and static balancing valve setting.
• Remote control with chronothermostat function to manage the parameter,
with display.
• External temperature sensor for climatic compensation.
• Heat exchanger for instantaneous SHW production.
• Flow control switch for priority SHW production.
• Motorized three-way priority valve on the delivery of the primary side.
• Motorized two-way modulating valve on the return of the primary side.
• Manual air vent filter and valve on the primary side.
• Safety pressure switch for low pressure on the primary side.
• Electrical and thermal safety valve on the heating side.
• Connections 3/4".
047U57228
)
SerieS
SHW heat exchanger Template
rated power with valves
67 kW GE551Y074
• Self-modulating circulator 15/6, centre distance 130 mm, complying with
ErP directive (2009/125/CE).
• Heat exchanger and fully insulated piping.
• WRAS-certified components for the sanitary circuit.
• Spacers for inserting the meters.
• Painted sheet metal cabinet (RAL9010), with key locking.
Technical Data
• Max. working temperature: 90 °C
• Primary circuit max. working pressure: 6 bar
• Secondary SHW circuit max. working pressure: 10 bar
Warning.
Maximum operating 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 SHW circuit: 30÷60 °C (SET POINT 50 °C)
• Nominal flow rate on primary circuit: 1150 l/h @ 75 °C for 67 kW

Components

5
10
3
4
2
11
1
A C D E
B

Legend

1 Housing for energy meter temperature probe
2 Filter
3 Motorized three-way priority valve for SHW
4 Manometer
5 Heat exchanger for the sanitary hot water function
6 Manual air vent valve
7
Minimum pressure switch
8 Motorized two-way modulating valve
9 Plastic spacer for heat energy meter
10 Flow switch
11
Brass spacer for SHW meter
12 Static balancing valve - Heating high temperature
Motorised 2-way zone valve for heating and electric safety -
13
Heating low temperature
14 Bypass lockshield valve - Heating low temperature
15 Circulator - Heating low temperature
16 Cabinet with electronic regulation unit
17 Remote control / chronothermostat with display
18
External temperature probe
A: Sanitary cold water outlet (optional)
B: Sanitary cold water inlet
C: Sanitary hot water outlet
D: Primary inlet
E: Primary outlet
6
7
15
12
I
H
13
8
14
17
9
15
18
G
F
PRIMARY
SHW
PRODUCTION
HEATING
CHECKS
F: Heating return - low temperature
G: Heating delivery - low temperature
H: Heating return - high temperature
I: Heating delivery - high temperature
1