Immergas MINI EOLO 24 3E - Boiler Commissioning; Initial Commissioning Checks

22
3-1
INSTALLERUSER
MAINTENANCE TECHNICIAN
3
COMMISSIONING
THE BOILER
INITIAL CHECK
To commission the boiler:
- 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;
- make sure the heating system is lled with
water and that the manometer indicates a
pressure of 1÷1.2 bar;
- make sure the air valve cap is open and that the
system is well deaerated;
- switch the boiler on and ensure correct ignition;
- make sure the gas maximum, medium and
minimum flow rate and pressure values
correspond to those given in the handbook
(Paragraph 3.18 / 3.21);
- check activation of the safety device in the event
of no gas, as well as the relative activation time;
- check activation of the main switch located
upstream from 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;
- seal the gas ow rate regulation devices (if
settings are modied);
- ensure production of domestic hot water;
3.1 HYDRAULIC DIAGRAM.
- ensure sealing eciency of water circuits;
- check ventilation and/or aeration of the
installation room where provided.
If even only a single safety check oers a negative
result, do not commission the system.
Key:
1 - Domestic hot water ow switch
2 - System lling valve
3 - Flow limiter
4 - Domestic hot water probe
5 - Gas valve
6 - System expansion vessel
7 - Burner
8 - Primary heat exchanger
9 - Fan
10 - Sealed chamber
11 - Flue pressure switch
12 - Flow probe
13 - Safety thermostat
14 - Air vent valve
15 - Boiler pump
16 - System draining valve
17 - System pressure switch
18 - Plate heat exchanger
19 - 3-way valve (motorised)
20 - By-pass
21 - 3 bar safety valve
G - Gas supply
AC - Domestic hot water outlet
AF - Domestic hot water inlet
R - System return
M - System ow