System Checks; User Instructions - Roberts Gorden Blackheat BH15UT Installation, Operation & Service Manual

SECTION 14: O
PERATION
Check the gas pressure at the outlet of the gas valve. See
Page 61, Section 18.9.1 or See Page 62, Section 18.9.2
for pressure settings or refer to the data plate.
Switch off the electrical supply (shutting down the heater),
remove pressure gauge - refit pressure testpoint screw,
ensuring a tight gas seal. Replace governor cover cap.
Repeat this procedure for each burner in the system.
Close the control chamber and secure with two sheet
metal screws.
14.3.8 Balancing Hot Suction
Reconnect all the burners on the system and allow them
to reach full operating temperature (approximately 20
minutes). Return to each burner and recheck the hot
suctions at the tee on the inlet to the pressure switch.
Readjust the damper so that the hot suction of 1.5 mbar is
achieved and lock the damper in position.

14.4 System Checks

Switch on again at the local switch to ensure smooth
ignition. Carry out the following system checks:
When running, turn off the gas supply at the appliance.
The heater will immediately shut down followed by one
attempt at restoration followed by lockout.
Linear and Double Linear only:
When running, disconnect the fan plug from the burner.
The unit should shut down within three seconds, proving
operation of the pressure switch.

14.5 User Instructions

After satisfactory testing, ensure that the client is fully
aware of the operation of the system. Bring this manual to
the attention of the user or purchaser; instruct them in the
safe operation of the heater(s). Advise the user that if the
system is unflued, any reduction in the natural ventilation
of the building may require a flue to be fitted, or additional
ventilation grilles will be required.
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