Gas System Start-Up; Boiler Start Up (Ignition); Circulation Pump - Immergas VICTRIX EXA 28 1 ERP Instruction Booklet And Warning

1.25 GAS SYSTEM START-UP.

To start up the system, refer to the technical standards in force.
In particular, for new gas systems:
- open windows and doors;
- avoid presence of sparks or naked flames;
- bleed all air from pipelines;
- ensure the internal system is properly sealed according to the
specifications set forth by technical regulations in force.

1.26 BOILER START UP (IGNITION).

To commission the boiler (the operations listed below must only
be performed by a qualified firm and without any unauthorised
persons):
- check that the internal system is properly sealed according to
the specifications set forth by technical regulations in force;
- make sure that the type of gas used corresponds to boiler settings;
- Check that there are external factors that may cause the formation
of fuel pockets;
- switch the boiler on and check correct ignition;
- make sure that the gas flow rate and relevant pressure values
comply with those given in the manual (Par. 4.1);
- ensure that the safety device intervenes in the event of gas supply
failure and check the relative intervention time;
- check activation of the main switch located upstream from the
boiler and in the boiler;
- check that the intake and/or exhaust terminals (if fitted) are not
blocked.
The boiler must not be started up even if only one of the checks
should be negative.
32

1.27 CIRCULATION PUMP.

The boiler is supplied with circulator fitted with speed regulator.
These settings are suitable for most systems.
In fact, the pump is equipped with electronic control to set ad-
vanced functions. For proper operation one must select the most
suitable type of operation for the system and select a speed in the
available range, with a focus on energy savings.
By-pass Regulation (Part. 32 Fig. 36). The boiler leaves the fac-
tory with all bypasses open.
If necessary, the by-pass can be regulated to system requirements
from minimum (by-pass closed) to maximum (by-pass open).
Adjust using a flat head screwdriver, turn clockwise and open the
by-pass, anticlockwise it is closed.
Display of operation status (Fig. 30). During normal operation
the status LED (2) is on green, the four yellow LEDs (3) indicate
circulator absorption according to the following table:
Circulating pump LED
G Y Y Y Y
On On O O O
G Y Y Y Y
On On On O O
G Y Y Y Y
On On On On O
G Y Y Y Y
On On On On On
Absorption
0 ÷ 25 %
25 ÷ 50 %
50 ÷ 75 %
75 ÷ 100 %