13
Giacomini S.p.A.
Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia
+39 0322 923372 - giacomini.com
1
2
BASIC
DOMESTIC WATER CIRCUIT
PRIMARY
CIRCUIT
SECONDARY
CIRCUIT
OPTIONALS
Heat exchangers
Control
components
Insulation
Other optionals
GE556Y5
0
3
Primary
connections
from bottom
GE556Y5
1
1
16-plate exchanger
+ 5 mm insulation
GE556Y5
2
1
DHW production
without controls
GE556Y5
3
1
Primary circuit
connections
with no controls
GE556Y5
4
4
Secondary circuit,
direct heating with
presetting valve
GE556Y5
5
2
Insulation
GE556Y5
6
1
Unit output of
DCW outlet
GE556Y5
0
4
Primary
connections
from top
GE556Y5
1
2
16-plate exchanger
+ 20 mm insulation
GE556Y5
2
2
DHW production
with thermostatic
control
GE556Y5
3
2
Primary circuit
connections with
double regulation
differential pressure
control valve
GE556Y5
6
4
Unit output for
domestic water
recirculation, with
circulator
GE556Y5
1
3
26-plate exchanger
+ 5 mm insulation
GE556Y5
3
0
Primary circuit
connections with
compact differential
pressure contr. valve
GE556Y5
6
5
Unit output for
domestic water
recirculation
without circulator
GE556Y5
1
4
26-plate exchanger
+ 20 mm insulation
GE556Y5
6
6
Thermostatic
by-pass to maintain
exchanger DHW
temperature
GE556Y5
1
5
36-plate exchanger
+ 5 mm insulation
GE556Y5
6
9
System drain cocks
GE556Y5
1
6
36-plate exchanger
+ 20 mm insulation
Thermostatic by-pass GE556Y566
The thermostatic by-pass kit maintains the exchanger
temperature for production of domestic hot water.
Fit the thermostatic by-pass kit on the HIU, screwing the
special nuts on the HIU Tee fittings (Ref. 1 and 2) to ensure
hydraulic seal.
• Weight: 0,5 kg
GE556Y5
6
6
Thermostatic by-pass to
maintain exchanger DHW
temperature
NOTE.
Thermostatic by-pass kit GE556Y566 must be installed with domestic
water recirculation kit GE556Y564/GE556Y565.
Thermostatic by-pass kit GE556Y566 cannot be combined to kit GE556Y521.
Kv of domestic water primary circuit with by-pass kit and temperature setting through thermostatic head
Setting range of thermostatic heads: 20÷70°C
D
E
10000
1000
∆
P [mm H
2
o]
Q [l/h]
100
10
10
100
10000
1000
Kv = 0,62
5000
Differential pressure
regulation range