Boiler Connection Unit; Gas Connection; Hydraulic Connection - Immergas VICTRIX TERA 24 PLUS Instruction Booklet And Warning

1.5 BOILER CONNECTION UNIT.

e connection unit consisting of all the nec-
essary parts to perform the hydraulic and gas
system connections of the appliance comes as
optional kit, perform the connections respecting
the arrangement of Fig. 6 based on the type of
installation to be made.

1.6 GAS CONNECTION.

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 tting.
Before connecting the gas line, carefully clean
inside all the fuel feed system pipes to remove
any residue that could impair boiler e ciency.
Also make sure the gas corresponds to that for
which the boiler is prepared (see boiler data
nameplate). If di erent, the boiler must be con-
verted for operation with the other type of gas
(see converting appliance for other gas types). It
is also important to check the dynamic pressure
of the mains (methane or LPG) used to supply the
boiler, which must comply with EN 437 and its
attachment, as insu cient levels may reduce gen-
erator output and cause discomfort to the user.
Ensure correct gas cock connection.
supply pipe must be suitably dimensioned
according to current regulations in order to
guarantee correct gas ow rate to the burner even
in conditions of maximum generator output and
to guarantee appliance e ciency (technical spec-
i cations). e coupling system must conform to
standards in force.
V
G
4
Fuel gas quality.
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.
can cause a variation in the heating power of
the mixture delivered to the appliance, with
subsequent change in its performance.

1.7 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.
e gas
A treatment of the heating and water 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.
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 1.23.
Water connections must be made in a rational
way using the couplings on the boiler template.
Attention: the manufacturer declines all liability
in the event of damage caused by the installation
of an automatic lling system.
RU
MU
SC
RR
3
1
R
M
e appliance was designed to In order to meet the system requirements es-
tablished by EN 1717 in terms of pollution of
drinking water, we recommend installing the
IMMERGAS anti-back ow kit to be used up-
stream of the cold water inlet connection of the
boiler. We also recommend using a category 1, 2
or 3 heat transfer uid (ex: water + glycol) in the
boiler's primary circuit (C.H. circuit), as de ned
in standard EN 1717.
Attention: to preserve the duration and the e -
ciency features of the appliance, in the presence
of water whose features can lead to the deposit of
scale, installation of the "polyphosphate dispenser"
is
kit is recommended.
3 bar safety valve. Discharge of the safety valve
has been conveyed to the condensate drain trap
outlet. Consequently, in the event of valve in-
tervention, the discharged liquid will end up in
the sewer system through the drain pipe of the
condensate drain trap.
In any case the lower part of the appliance is
relative closure cap to check for the presence of
liquid in the discharge circuit and to check the
intervention of the 3 bar safety valve.
Condensate drain. To drain the condensate pro-
duced by the appliance, it is necessary to connect
to the drainage system by means of acid conden-
sate resistant pipes, with an internal Ø of at least
13 mm.
the drainage system must be carried out in such
a way as to prevent occlusion and freezing of the
liquid contained in it. Before appliance ignition,
ensure that the condensate can be correctly re-
moved. A er rst ignition, check that the drain
trap is lled with condensate (Para. 1.25). Also,
comply with national and local regulations on
discharging waste waters.
In the event condensate is not discharged into
the wastewater drainage system, a condensate
neutraliser must be installed to ensure com-
pliance with the parameters established by the
legislation in force.
Key:
V - Electrical connection
G - Gas supply
RU - Storage tank unit return (optional)
MU - Storage tank unit ow (optional)
RR - System lling
2
SC - Condensate drain (minimum internal diame-
ter Ø 13 mm)
M - System ow
R - System return
1 - System lling valve
2 - System draining valve
3 - 3 bar safety valve drain tting signal
4 - Bypass (Note: to disassemble if coupled with
an external storage tank unit)
8
tted with a drain tting (Ref. 3 Fig. 6) with the
e system connecting the appliance to
6