
Form GB/WA/030, Page 8
6.0 COMMISSIONING AND TESTING
The commissioning and testing should only be carried out by a competent person. This section should be read completely and fully under-
stood. A commissioning service is available from AMBI-RAD.
6.1 Electrical Check
After completion of the installation and before switching on the elec-
trical supply, a preliminary check must be performed by a qualified
electrician. Check the following:
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$Check that all site wiring is connected in accordance with the
appropriate circuit diagram in Section 9.
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$Ascertain that the correct fuse and cable size are fitted.
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$Check that the earthing of the heater has been carried out by
conducting an earth continuity test. Connect a test meter, one
lead to the appliance earth point and the other lead to the main
incoming earth at the isolator. A resistance reading of 0.1 ohm
or less must be indicated. If a higher reading is obtained, check
earth connections for being clean and tight. If problem still ex-
ists, seek expert advice.
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$Carry out a polarity test. Connect one lead of a suitable AC
voltmeter to earth and connect the other lead to the live supply
terminal at the heater. Turn on power to the heater and check
for proper voltage.
The same result should be obtained by connecting the test leads
from live to neutral.
Connect the voltmeter test leads to N and E. A reading of be-
tween 0-15 volts at maximum should be obtained. If these tests
do not conform to the above, there is a fault which must be
rectified before progressing further with the commission.
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$Check that a suitable thermostat or control panel has been fit-
ted.
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$Ensure that an isolation switch has been fitted.
6.2 Gas Connection
The whole of the gas installation, including the meter, should be
inspected, tested for soundness, and purged in accordance with
BS6891 and British Gas Document IGE/UP/1.
6.3 Suspension and Support
Check to ensure that the heater is adequately suspended or supported
and that no other parts have been fitted that are not properly sup-
ported or secured. For safe heater operation, check that the heater is
level in all directions.
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$Locate the multifunctional control valve and identify the control
knob. While lighting the pilot, depress the control knob. Once
the pilot is established continue to depress the knob for 20 sec-
onds and then release slowly.
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$Re-attach the access panel.
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$Adjust the temperature control setting to above the ambient tem-
perature. The main burners will light (the main burners can be
seen through the viewing port).
6.4.2 Turning "OFF" a Heater with a
Permanent Pilot
To turn off both the pilot and the main burner, rotate the knob on the
multifunctional valve in a clockwise direction. WAIT THREE
MINUTES BEFORE RELIGHTING THE HEATER.
6.4.3 Turning "ON" a Heater with Spark
Ignition
The ignition spark ignites the gas creating a pilot flame. The flame
is detected by the flame rod. If a pilot flame is not detected within 50
seconds, the ignition controller locks out and must be manually re-
set. The reset button is on the heater (or a site-provided, remote
button may be fitted).
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$Ensure that the electrical supply and the gas supply to the heater
are turned "ON"
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$If fitted with a clock control, set to "ON".
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$Adjust the temperature control to the required operating tem-
perature. The heater will operate automatically.
NOTES: If heater will not "start" on initial start up, the ignition
controller may be in lockout position. Depress the reset button. Sev-
eral attempts at lighting the pilot may be required to remove the air
from the multifunctional valve.
6.4.4 Turning "OFF" a Heater with Spark Ignition
To turn "OFF" the heater for a short period, adjust the temperature
control to its lowest temperature or "OFF". The blower will con-
tinue to run to cool the heat exchanger before turning off automati-
cally.
To turn "OFF" the heater for a long period, adjust the temperature
control to its lowest temperature or "OFF". When the blower has
stopped, turn "OFF" the gas and the electricity supplies.
6.5 Heater Pipework
The soundness of the heater's pipework has been checked at the
factory. However, during shipment or installation, connections may
be loosened. Check the soundness of the pipework using a leak-
detecting fluid such as a soap and water solution. If any leaks are
found, they must be rectified immediately.
WARNING: Never use a naked flame for
checkingthesoundness of any gasconnections.
6.6 Adjustments
6.6.1 Burner Gas Adjustment
The gas pressure is set for the required heat input before the heater
leaves the factory, and normally the gas pressure will not require re-
setting. To check gas pressure, the following procedure should be
carried out.
1) Ascertain from Section 1, Technical Data (Table 2 or 3), the cor-
rect burner pressure for the heater.
2) Turn the temperature control to its lowest setting.
3) Remove the screw from the outlet pressure test point of the gas
valve (See Figure 5, page 9). Connect a manometer to the test
point.
4) Adjust the temperature control to a setting above ambient tem-
perature.
6.4 Lighting the Heater (Read and
understand all steps before lighting.)
The heater is fitted with either a permanent pilot which requires
lighting or an automatic spark ignition system. Determine the type
of pilot and follow the appropriate instructions.
6.4.1 Lighting a Heater with a Permanent Pilot
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$Ensure that the electrical supply to the heater is turned "On"
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$Set the temperature controller to lowest setting. If a clock con-
trol and a summer/winter switch have been fitted, ensure that
they are set to "ON" and winter.
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$Turn on the main gas supply to the heater.
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$Remove the access panel on the control side of the heater. (While
servicing the heater, the side access panel is designed to "hang"
from the bottom panel of the heater. Place the extended top edge
of the side panel over the lip on the bottom panel of the heater.
The side panel will "hang" suspended from the bottom panel
until ready to be re-installed on the heater.)
With the panel removed, the pilot lighting hole is in view (on the
right side of the burner rack).
WARNING: If for any reason the pilot light
goesout,allow threeminutes beforerelighting.