Boiler Commissioning (Initial Check); Hydraulic Diagram - Immergas HE COMBI INTERNAL Manual

3
BOILER COMMISSIONING
To commission the boiler:
- ensure that HE 30 COMBI INT / EXT
complies with AS 5601.
- ensure that the type of gas used corresponds to
boiler settings;
- check connection to a 230V-50Hz power
mains, correct L-N polarity and the earthing
connection;
- switch the boiler on and ensure correct ignition;
- make sure the gas maximum, intermediate and
correspond to those given in the handbook,
Par. 3.16;
- check activation of the safety device in the event
of no gas, as well as the relative activation time;

3.1 HYDRAULIC DIAGRAM.

G DHW CF
- check activation of the main switch located
upstream from the boiler and in the boiler;
- check that the intake and/or exhaust terminals
are not blocked;
- check activation of the "no air" safety pressure
switch;
- ensure activation of all adjustment devices;
-
- ensure production of domestic hot water;
-
- check ventilation and/or aeration of the
installation room where provided.
result, do not commission the system.
F SC
R
17
Key:
1 -
2 - Flow limiter
3 - Domestic hot water probe
4 - System pressure switch
5 - Gas valve
6 - Burner
7 - Sealed chamber
8 - Primary heat exchanger
9 - Flue hood
10 - Fan
11 - Flue pressure switch
12 - Flue safety thermostat
13 - Condensing heat exchanger
14 - Flow probe
15 - Safety thermostat
16 - System expansion vessel
17 - Air vent valve
18 - Boiler pump
19 - DHW heat exchanger
20 - 3-way valve (motorised)
21 - System draining valve
22 - By-pass
23 - 3 bar safety valve
24 - Condensate drain trap
G - Gas supply (not supplied as standard)
DHW - Domestic hot water outlet
(not supplied as standard)
CF - Cold inlet
(not supplied as standard)
R - System return (not supplied as standard)
F -
SC - Condensate drain (supplied as standard)
(minimum internal diameter Ø13 mm)
3-1