4.5.2.
Hydraulic connection of the heating circuit
1. Connect the heating water outlet pipe to the heating flow
connection.
2. Connect the heating water return pipe to the heating return
connection.
3. Install a filling and drainage valve on the installation for filling and
draining the boiler.
4
The boiler is equipped with a safety valve.
CAUTION
4
The heating pipe must be mounted in accordance
with prevailing provisions.
¼
If using thermostatic valves, see chapter: "Connecting the
4.5.3.
Hydraulic connection of the water circuit
for domestic use
¼
If need be, refer to the DHW tank's installation, user and
maintenance manual.
4.5.4.
Connecting the expansion vessel
AGC 15 and AGC 25 boilers are fitted as standard with a 18-litre
expansion vessel.
The AGC 35 is not fitted with an expansion vessel. Install the
expansion vessel on the heating return pipe
z
.
If the water volume is greater than 225 litres or the static height of the
system exceeds 5 metres, an additional expansion vessel must be
fitted. Refer to the table below to determine the expansion vessel
required for the installation.
Conditions of validity of the table:
4
3-bar safety valve
4
Average water temperature: 70 °C
Supply temperature: 80 °C
Return temperature: 60 °C
4
The filling pressure in the system is lower than or equal to the initial
pressure in the expansion vessel
Initial pressure of the
expansion vessel
Volume of the expansion vessel depending on the volume of the installation (in litres)
100
125
150
175
200
250
300
> 300
0.5 bar
4,8
6,0
7,2
8,4
9,6
12,0
14,4
Volume of the installation x 0,048
1 bar
8,0
10,0
12,0
(1)
14,0
16,0
20,0
24,0
Volume of the installation x 0,080
1.5 bar
13,3
16,6
20,0
23,3
26,6
33,3
39,9
Volume of the installation x 0,133
(1) Factory configuration
M002524-A
1
2
4. Installation
AGC 10/15 - AGC 15 - AGC 25 - AGC 35
30
20/01/2012 - 300026081-001-B