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jumper X40 (Fig. 3-2). Make sure that the On/
Off thermostat contact is of the “clean” type, i.e.
independent of the mains supply, otherwise the
electronic adjustment card would be damaged.
The Mini CRD must be connected to clamps 40
e 41 eliminating jumper X40 on the P.C.B. (in the
boiler), (Fig. 3-2).
Important:
if the Mini CRD is used, arrange
two separate lines in compliance with current
regulations regarding electrical systems. Boiler
pipes must never be used to earth the electric or
telephone lines. Ensure elimination of this risk
before making the boiler electrical connections.
1.7 VENTILATION OF THE ROOMS.
In the room in which the boiler is installed it is
necessary that at least as much air flows as that
requested for by normal combustion of the gas
and ventilation of the room. Natural air flow must
take place directly through:
- permanent openings in the walls of the room
to ventilate that lead towards the outside;
- ventilation pipes, individual or branched type.
The air used for ventilation must be withdrawn
directly from outside, in an area away from
sources of pollution. Natural air flow is also
allowed indirectly by air intake from adjoining
rooms. For further information relative to ven-
tilation of the rooms follow that indicated by the
standards set and the following modifications
and integrations.
Evacuation of foul air.
In the rooms where the
gas appliances are installed it may also be neces-
sary, as well as the intake of combustion agent air,
to evacuate foul air, with consequent intake of a
further equal amount of clean air. This must be
realised respecting the provisions of the technical
regulations in force.
1.8 EVACUATION OF COMBUSTION
PRODUCTS: FLUE DUCT AND
BRANCHED MULTIPLE FLUES
The European regulation 813/2013 provides that
this boiler can be installed only to replace simi-
lar equipment connected to existing branched
multiple flues.
Connection to branched multiple flues.
Fitting the appliances to a branched multiple flues
takes place by means of flue ducts.
In the event of fittings with pre-existing flues,
these must be in safe and efficient status and per-
fectly clean because the detachment of any waste
from the walls during functioning, could block
the passage of flue gases, thus causing extremely
dangerous situations for the user.
The flue ducts must be connected to the chimney
or flue in the same room in which the appliance
is installed or, at most, in the adjoining room and
must comply with the requirements indicated by
the current technical regulations.
1.9 FLUE EXHAUST CONTROL DEVICE
Important:
it is prohibited to put the fumes
exhaust control device out of order voluntarily.
Every piece of this device must be replaced using
original spare parts if they have deteriorated. In
the case of repeated interventions of the fumes
exhaust control device, check the fumes exhaust
flue and the ventilation of the room in which the
boiler is located.
1.10 SYSTEM FILLING.
Once the boiler is connected, proceed with sy-
stem filling via the filling valve (Fig. 2-2). Filling
is performed at low speed to ensure release of air
bubbles in the water via the boiler and heating
system vents. The boiler has a built-in automatic
venting valve on the circulator. Open the radiator
air vent valves. Close radiator vent valves only
when water escapes from them.
Close the filling valve when the boiler manometer
indicates approx. 1.2 bar.
N.B.:
during these operations start up the cir-
culation pump at intervals, acting on the main
switch positioned on the control panel.
Vent the circulation pump by loosening the front
cap and keeping the motor running.
Screw the cap back on after the operation.
1.11 GAS SYSTEM START-UP.
To start up the system, make reference to the
Standard.
In particular, for new gas systems:
- open windows and doors;
- avoid presence of sparks or naked flames;
- bleed all air from pipelines;
- check that the internal system is properly sealed
according to specifications.
1.12 BOILER START UP (IGNITION).
For the boiler start up (the operations listed
below must only be performed by qualified per-
sonnel and in the presence of staff only):
- check that the internal system is properly sealed
according to specifications;
- ensure 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 ensure correct ignition;
- make sure that the gas flow rate and relevant
pressure values comply with those given in the
manual (parag. 3.17);
- 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 functio-
ning of fans;
- ensure that the safety device is engaged in the
event of gas supply failure and check activation
time;
- check activation of the main switch located
upstream from the boiler.
The boiler must not be started up in the event of
failure to comply with any of the above.
Summary of Contents for Nike Star 24 4 ErP
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