19
INS
TALLER
US
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MAINTEN
AN
CE TECHNI
CI
AN
Attention:
danger of burns from the liquid
contained in the collectors.
1.27 BOILER START UP (IGNITION).
In order to issue the Declaration of Conformity
required by the laws in force, one must fulfil
the following requirements to commission the
boiler (the operations listed below must only
be performed by qualified personnel and in the
presence of professionals only):
- 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. 3.21);
- ensure that the safety device intervenes in the
event of gas supply failure and check the relative
intervention time;
- check the intervention of the main switch
located upstream from the boiler and in the
boiler;
- check that the intake/exhaust concentric ter-
minal (if fitted) is not blocked.
The boiler must not be started up even if only
one of the checks should be negative.
N.B.:
only upon completing commissioning by
an installer, may an authorised firm carry out an
initial inspection of the boiler, which is required to
activate the Immergas warranty. The test certificate
and warranty is issued to the user.
1.28 DHW MIXING VALVE.
The thermostatic mixing valve mixes the cold
water with the hot water and via an internal wax
element, sensitive to the temperature, automati-
cally controls the temperature of the mixed water
set by the user.
N.B.:
for excellent management of the tempera-
tures, the mixing valve must be set by the installer
at a safety temperature required by the user. The
outlet temperature of the domestic hot water
can also depend on the value set on the boiler,
however
,
the upper limit temperature value of
the domestic hot water is always determined by
the position of the mixing valve: knob position 1
= 42°C, 2 = 48°C, 3 = 54°C, 4 = 60°C (standard)
(the values indicated refer to mixing valve inlet
at 70°C).
Any release of the three-way mixing valve.
If
after a long period of inactivity the three-way
mixing valve is blocked, it is necessary to act
manually on the knob positioned on the top of
the same in a way to release the shutter of the
valve itself.
1.29 HOT WATER STORAGE TANK.
The inertial storage tank has a capacity of 220
litres. Inside there are the steel heat exchange
pipes, amply sized, wound in a coil for domestic
hot water and for solar integration. In addition,
it is equipped with the fittings for connection to
an auxiliary heat pump. These storage tank units
are constructed with stainless steel casing and
bottoms, guaranteeing long duration over time.
The assembly concepts and welding (T.I.G.) are
implemented to the minimum detail to ensure
maximum reliability.
Storage tank unit disassembly.
For easy main-
tenance or particular handling requirements,
remove the storage tank as described in the
relative paragraph "boiler separation".
Summary of Contents for 3.025499
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