Boiler Commissioning (Initial Check); Boiler Hydraulic Diagram - Immergas VICTRIX 24 TT 1E Instruction And Warning Book

3
BOILER COMMISSIONING
(INITIAL CHECK)
To commission the boiler:
- make sure that the declaration of conformity
for installation is supplied with the appliance;
- ensure that the type of gas used corresponds to
the boiler settings (the type of gas appears on
the display on first electrical power supply, or
by checking the relative parameter "G");
- check connection to a 230V-50Hz power
mains, correct L-N polarity and the earthing
connection;
- make sure the central heating system is filled
with water and that the pressure gauge indicates
a pressure of 1-1.2 bar.

3.1 BOILER HYDRAULIC DIAGRAM.

3-1
- switch the boiler on and check correct ignition;
- check the CO flow rate in the flue:
2
- maximum (100%)
- intermediate (50%)
- minimum (0%)
the values must comply with what is indicated
in the relative tables (Fig. 3-12);
- check activation of the safety device in the event
of no gas, as well as the relative activation time;
- check the intervention of the main switch
located upstream of the boiler and in the boiler;
- check that the intake and/or exhaust terminals
are not blocked;
- ensure activation of all adjustment devices;
26
- check the production of domestic hot water;
- check sealing efficiency of water circuits;
- check ventilation and/or aeration of the instal-
lation room where provided.
If even only a single safety check offers a negative
result, do not commission the system.
Key:
1 - Gas valve
2 - Domestic hot water flow switch
3 - Flow limiter
4 - Domestic hot water probe
5 - Condensate drain trap
6 - System filling valve
7 - DHW heat exchanger
8 - System expansion vessel
9 - Condensation module
10 - Air / gas mixer
11 - Fan
12 - Ignition / detection electrode
13 - Air sample point
14 - Flue sample point
15 - Flue probe
16 - Manual vent valve
17 - Flow probe
18 - Safety flow probe
19 - Vent valve
20 - Boiler circulator pump
21 - System pressure switch
22 - Three-way valve (motorised)
23 - By-pass
24 - System draining valve
25 - 3 bar safety valve
26 - 3 bar safety valve drain fitting signal
G - Gas supply
AC - Domestic hot water outlet
AF - Domestic cold water inlet
SC - Condensate drain
M - System flow
R - System return