6
6.
COMMISSIONING
6.1
PREPARATION:
6.1.1
Ensure that:
a.
Gas and Electrical supplies are
OFF.
b.
Filter, fan and fan compartments are free from obstructions.
c.
All registers or grilles are open and conform to design specifications.
d.
Return, relief and ventilation air installations are adequate.
6.2
SETTING OF FAN SPEED:
6.2.1
Remove the air filter and fan chamber door.
SYSTEM E-T MODELS:
On the electronic control module, set:
6.2.2
Rate Switch to ‘
MAX
’,
6.2.3
Cleanflow switch to ‘
1
’ if a Cleanflow electronic air cleaner is fitted, otherwise set to ‘
0
’.
6.2.4
Refit the fan chamber door and air filter.
6.3
IGNITION OF PILOT AND MAIN BURNERS:
WARNING:
If the pilot light is extinguished either intentionally or unintentionally, no attempt should be made to
relight the gas for a minimum of 3 minutes. Ensure that the Electrical supply, time control and Selector switches are set
to
‘OFF’
.
6.3.1
Set the Thermista-stat/room thermostat to lowest or
OFF
setting.
6.3.2
On the Multifunctional control, remove the Outlet Pressure test point cover, and fit a pressure test gauge (refer
Fig. 4).
6.3.3
Turn the heater Gas supply
ON
, test for gas soundness and purge the whole gas pipe as described in BS6891.
6.3.4
Referring to Fig. 4, partially depress the OPERATING CONTROL and set the control
1
/
4
turn anti-clockwise to
the ‘SPARK’ symbol. Press and hold the OPERATING CONTROL, and whilst observing the Pilot Burner,
repeatedly press the Piezo igniter button until the Pilot burner ignites.
6.3.5
After 20 seconds release the Multifunctional control OPERATING CONTROL and let it spring out; ensure that
the Pilot burner remains alight. If the Pilot burner extinguishes, rotate the Multifunctional control OPERATING
CONTROL clockwise to the ‘
l
’ position and ensure that the OPERATING CONTROL is fully reset. Wait three
minutes and repeat steps 6.3.4 and 6.3.5, holding the OPERATING CONTROL depressed for a longer period, until
the Pilot burner remains alight.
6.3.6
Ensure that the pilot flame envelops thermocouple tip, if not, check that the pilot orifices is free from
obstruction. The pilot is factory set and is non-adjustable.
6.3.7
With the Pilot burner lit, depress the OPERATING CONTROL and turn it to the position indicated by the flame
symbol.
6.3.8
Set the air heater Electricity supply
ON.
6.3.9
Set the Time control to required Heating On periods.
6.3.9
Set the Selector switch to ‘TIMED’.
6.3.10 Set the Thermista-stat or room thermostat to MAXIMUM.
6.3.11 Ensure that the main burner has now ignited.
6.3.12 Test for gas leakage at supply, Multifunctional control, Pilot and Main burners using proprietary detection fluid,
sealing any leaks found.
6.3.13 Allow heater to operate for a minimum of 15 minutes to ensure stability.
19
Fig. 6a, SYSTEM E-T FUNCTIONAL DIAGRAM
r
