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3.15 CASING REMOVAL.
To facilitate boiler maintenance the casing can be
completely removed as follows (Fig. 3-4):
- Remove frame (1) grasping the edges and pul-
ling towards oneself as indicated by the arrow.
- Loosen the 2 front screws (2) and the 2 screw
fasteners (3) below on the casing o (4).
- Pull the casing (4) towards yourself and
upwards at the same time in order to detach it
from the upper hooks.
3.16 YEARLY APPLIANCE CHECK AND
MAINTENANCE.
The following checks and maintenance should
be performed at least once a year.
- Clean the flue side of the heat exchanger.
- Clean the main burner.
- Visually check the fume hood for deterioration
or corrosion.
- Check correct lighting and functioning.
- Check correct calibration of the burner in
domestic hot water and heating phases.
- Check correct functioning of control and
adjustment devices and in particular:
- the intervention of main electrical switch
positioned outside of the boiler;
- system control thermostat intervention;
- domestic hot water control thermostat inter-
vention.
- Check that the internal system is properly
sealed according to specifications.
- Check the intervention of the device against no
gas ionization flame control. Intervention time
must be less than 10 seconds.
- Visually check for water leaks or oxidation
from/on connections.
- Visually check that the water safety drain valve
is not blocked.
- Check that, after discharging system pressure
and bringing it to zero (read on boiler mano-
meter), the expansion vessel load is at 1.0 bar.
- Check that the system static pressure (with
system cold and after refilling the system by
means of the filling valve) is between 1 and 1.2
bar.
- Check visually that the safety and control
devices have not been tampered with and/or
shorted, in particular:
- temperature safety thermostat;
- water pressure switch;
- flue exhaust control thermostat.
- Check the condition and integrity of the elec-
trical system and in particular:
- electrical power cables must be inside the
whipping;
- there must be no traces of blackening or
burning.
N.B.
: in addition to yearly maintenance, the ther-
mal system must also be checked, with frequency
and procedures that comply with the provisions
of the technical regulations in force.
Summary of Contents for Nike Star 24 4 ErP
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