1.16 BOILER START UP (IGNITION).
For issue of the Declaration of Conformity
provided for by Italian Law, the following must
be performed for boiler start-up:
- check that the internal system is properly sealed
according to specifications;
- ensure that the type of gas used corresponds to
boiler settings;
- switch the boiler on and ensure correct ignition;
- make sure that the gas flow rate and relevant
pressure values comply with those given in the
manual ( Par. 3.20);
- ensure that the safety device is engaged in the
event of gas supply failure and check activation
time;
- check activation of the master switch located
upstream from the boiler and in the boiler;
- check that the concentric intake-exhaust
terminal (if fitted) is not blocked.
The boiler must not be started up even if only
one of the checks should be negative.
N.B.: The boiler preliminary check must be carried
out by a qualified technician. The conventional
boiler warranty is valid as of the date of testing.
The test certificate and warranty is issued to the
user.
Total head available to the system.
C
D
1.17 CIRCULATION PUMP.
The "Victrix 26 2 I" series boilers are supplied
with a built-in circulation pump with 3-position
electric speed control. The boiler does not operate
correctly with the circulation pump on first
speed. To ensure optimal boiler operation, in the
case of new systems (single pipe and module) it
is recommended to use the pump at maximum
speed. The circulation pump is already fitted
with a capacitor.
Pump release. If, after a prolonged period of
inactivity, the circulation pump is blocked,
unscrew the front cap and turn the motor shaft
using a screwdriver. Take great care during this
operation to avoid damage to the motor.
By-pass regulation (part. 29 Fig. 1-25). If
necessary, the by-pass can be regulated according
to system requirements from a minimum (by-
pass excluded) to a maximum (by-pass inserted)
represented by the graphics (Fig. 1-24). Make the
regulation using a flat head screwdriver, turn
clockwise and insert the by-pass, anti-clockwise
it is excluded.
A
B
Flow rate (l/h)
13 - IE
1.18 KITS AVAILABLE ON REQUEST.
• System cut-off valve kits with or without
inspectionable filter (on request) The boiler
is designed for installation of system cut-off
cocks to be placed on flow and return pipes
of the connection assembly. This kit is very
useful for maintenance because it allows to
empty just the boiler without having to empty
the entire system. Moreover, the version with
filter preserves the functioning characteristics
of the boiler thanks to its inspectionable filter.
• System zone control unit kit (on request). If
the central heating system is to be divided into
several zones (max. three) in order to interlock
them with separate adjustments and to keep
water flow rate high for each zone, Immergas
supplies zone system kits on request.
• Polyphosphate dispenser kit (on request).
The polyphosphate dispenser reduces the
formation of lime-scale and preserves the
original heat exchange and domestic hot water
production conditions. The boiler is prepared
for application of the polyphosphate dispenser
kit.
• Relay board (on request) The boiler is prepared
for the installation of a relay card that allows
to increase the features of the appliance and
therefore functioning possibilities.
• Cover kit (on request). If installed outdoors in a
partially protected place with direct air intake,it
is compulsory to mount the appropriate top
protection cover for the correct functioning
of the boiler and to protect it from adverse
weather conditions.
The above-mentioned kits are supplied complete
with instructions for assembly and use.
A = Head available to the system at
maximum speed with by-pass
excluded.
B = Head available to the system at
maximum speed with by-pass
inserted.
C = Head available to the system
at second speed with by-pass
excluded.
D = Head available to the system
at second speed with by-pass
inserted.
1-24
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