21/30
Figure 13b : Overview of the HCH options
Note : When the option 541.4 (ducted inlet end) is required, the standard perforated end panel is not required
4.7 Controls
Vertical heaters are supplied with a pre-
wired control unit, comprising :
1. time
control
2. day/night temperature control
3. heat-vent
facility
Horizontal heaters are supplied with a
remote panel.
Refer also to § 3.2 ‘Electrical connections’.
5.0 Commissioning
5.1
Only suitably trained personnel or specialist
commissioning engineers should be used to
carry out the commissioning of the installed
equipment. Ensure that all relevant manuals
and user instructions are available before
the commissioning
engineer proceeds.
Although the heater is test fired at the
factory, each installation has a different
set of site conditions. Therefore
commissioning is very important.
Note: The heater should not just be
switched on and left to function.
The correct type of combustion analysis
equipment, correctly calibrated, should be
used at all times.
Pre-Commissioning Checks
Always ensure electrical safety and
soundness of the oil installation before
commencing, and then proceed with the
following checks:-
(a) Ensure electrical supply has been
switched off.
(b) Ensure the oil supply is switched off.
(c) Check that the heater has been
installed on a suitable level base and is
supported correctly with adequate
clearance around the inlet grilles.
(d) Fully open louvres on nozzled outlets
or ductwork grilles.
(e) Ensure the flue system is adequately
supported with correct termination and
sealing of the joints.
(f) Check that all heater panels are
securely fastened and correctly fitted.
(g) Locate gas sampling point and ensure
this can be resealed on completion of
commissioning.
(h) Check fan and limit stat
Fan
off
30°C
Fan
on
60°C
Overheat Limit
see table 14
Ensure white button is pulled out and
red button has been reset.
(i) Where applicable check pulley
alignment and belt tension.
(j)
Test for earth continuity between the
heater, control panels, burner and oil
pipe work.
1 Standard
2 Ducted inlet end
3 Ducted inlet bottom
4 Ducted inlet top
5 Ducted linlet rear
6 Ducted outlet
