Immergas NIKE MYTHOS 24 2 E, Инструкция и книга предупреждений

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1.10 BOILER COMMISSIONING
(IGNITION).
In order to issue the Declaration of Conformity
required by the regulations in force, one must
comply with the following requirements to
commission the boiler (the operations listed
below must only be performed by qualified
personnel and in the presence of staff only):
- check that the internal system is properly sealed
according to the regulations in force;
- make sure that the type of gas used corresponds
to boiler settings;
- check that there are no 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. 3.16);
- check the correct ventilation of the rooms;
- check the existing draught during normal
functioning of the appliance, e.g. a draught
gauge positioned at the exit of the appliance
combustion products;
- check that there is no backflow of combustion
products into the room, even during
functioning of fans;
- 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 of the boiler.
The boiler must not be started up even if only
one of the checks should be negative.
N.B.:
the preliminary boiler check must be carried
out by an authorised company. The standard boiler
warranty is valid from the date of inspection.
The test certificate and warranty is issued to the
user.
1.11 CIRCULATION PUMP.
The Nike Mythos 24 2E series boilers are
supplied with a built-in circulation pump with
three-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. 16 Fig. 1-6).
If
necessary, the by-pass can be adjusted according
to system requirements from a minimum (by-
pass excluded) to a maximum (by-pass inserted)
represented by the graph (Fig. 1-5). Make the
adjustment using a flat head screwdriver, turn
clockwise and insert the by-pass; by turning it
anti-clockwise it is excluded.
1.12 KITS AVAILABLE ON REQUEST.
• Connection unit kit (on request). The kit
includes pipes, fittings and cocks (including
gas cock), to carry out all connections to the
boiler system
• System shut off valves kit. The boiler is designed
for installation of system interception cocks
to be placed on flow and return pipes of the
connection assembly. This kit is particularly
useful for maintenance as it allows to drain just
the boiler without having to empty the entire
system.
• Polyphosphate dispenser kit. 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.
The above-mentioned kits are supplied complete
with instructions for assembly and use.
Head available to the system.
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
H
ea
d (m H
2
O)
Flow rate (l/h)
H
ea
d (kP
a)
Fig. 1-5