Boiler Connection Unit; Gas Connection; 2H3B/P - Immergas VICTRIX 24 TT 1E Instruction And Warning Book

1.4 BOILER CONNECTION UNIT.

The connection unit, which is composed of all the
required accessories to connect the appliance's
hydraulic and gas system, is furnished as an
optional kit. Execute connections as indicated
in the relative instructions sheet by using the
connections represented in fig. 1-3.
1.5 GAS CONNECTION (APPLIANCE
CATEGORY II ).

2H3B/P

Our boilers are designed to operate with methane
gas (G20) and LPG. Supply pipes must be the
same as or larger than the 3/4"G boiler fitting.
Before connecting the gas line, carefully clean
inside all the fuel feed system pipes to remove
any residue that could impair boiler efficiency.
Also make sure the gas corresponds to that for
which the boiler is prepared (see boiler data name
plate). If different, the appliance must be convert-
ed for operation with the other type of gas (see
converting appliance for other gas types). The
dynamic gas supply (methane or LPG) pressure
must also be checked according to the type used
in the boiler, which must comply with the tech-
nical standards in force, as insufficient levels can
reduce generator output and cause malfunctions.
Ensure correct gas cock connection. The gas sup-
ply pipe must be suitably dimensioned according
to current regulations in order to guarantee cor-
rect gas flow rate to the burner even in conditions
of maximum generator output and to guarantee
appliance efficiency (technical specifications).
The coupling system must conform to technical
standards in force.
3
SC
G
Fuel gas quality. The appliance has been de-
signed to operate with combustible gas free of
impurities; otherwise it is advisable to fit special
filters upstream of the appliance to restore the
purity of the fuel.
Storage tanks (in case of supply from LPG
depot).
- New LPG storage tanks may contain residual
inert gases (nitrogen) that degrade the mixture
delivered to the appliance casing functioning
anomalies.
- Due to the composition of the LPG mixture,
layering of the mixture components may occur
during the period of storage in the tanks. This
can cause a variation in the heating power of
the mixture delivered to the appliance, with
subsequent change in its performance.
1.6 HYDRAULIC CONNECTION.
Attention: in order not to void the condensa-
tion module warranty, before making the boiler
connections, carefully wash the heating system
(pipes, radiators, etc.) with special pickling or
descaling products to remove any deposits that
could compromise correct boiler operation.
A chemical treatment of the thermal system
water is required, in compliance with the tech-
nical standards in force, in order to protect the
system and the appliance from deposits (e.g.,
lime scale), slurry or other hazardous deposits.
In order not to void the heat exchanger warranty,
you are required to comply with what has been
prescribed in paragraph 1.21.
Water connections must be made in a rational
way using the couplings on the boiler template.
M
R
1
AF
AC
V
7
Attention: Immergas declines all liability in the
event of damage caused by the inclusion of auto-
matic filling that is not its own brand.
In order to meet the system requirements estab-
lished by the regulations in force in relation to
the pollution of drinking water, we recommend
installing the IMMERGAS anti-backflow kit to be
used upstream of the cold water inlet connection
of the boiler. It is also recommended that the heat
transfer fluid (e.g. water + glycol) entered in the
primary circuit of the boiler (heating circuit),
complies with the local regulations in force.
Attention: to preserve the duration and the effi-
ciency features of the appliance, in the presence
of water whose features can lead to the deposit of
scale, installation of the "polyphosphate dispenser"
kit is recommended.
3-bar safety valve. Discharge of the safety valve
has been conveyed to the condensate drain trap.
Consequently, in the event of valve intervention,
the discharged liquid will end up in the sewer
system through the drainpipe of the condensate
drain trap.
The appliance has anyhow been provided with
a drain fitting (ref. 3 fig. 1-3) with a relative cap
to check the presence of liquid in the drainage
circuit and to check the 3-bar safety valve.
Condensate drain. To drain the condensate
produced by the appliance, it is necessary to
connect to the drainage system by means of
acid condensate resistant pipes, with an internal
Ø of at least 13 mm. The system connecting the
appliance to the drainage system must be carried
out in such a way as to prevent freezing of the
liquid contained in it. Before appliance ignition,
ensure that the condensate can be correctly re-
moved. After first ignition, check that the drain
trap is filled with condensate (para. 1.22). Also,
comply with national and local regulations on
discharging waste waters.
Key:
V - Electrical connection
G - Gas supply
AC - Domestic hot water outlet
AF - Domestic cold water inlet
SC - Condensate drain (minimum internal diame-
ter Ø 13 mm)
M - System flow
R - System return
1 - System filling valve
2 - System draining valve
3 - 3-bar safety valve drain fitting signal
2
1-3