Roberts Gorden UHA SERIES 200 - Manual (Page 25)

SECTION 10: O PERATION AND M AINTENANCE
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SECTION 10: OPERATION AND MAINTENANCE
Installation, service, and annual inspection of the
heater must be done by a contractor qualified in the
installation and service of gas-fired heating
equipment. Read this manual carefully before
installation, operation, or service of this equipment.
All components are accessed via the door secured
by 4 sheet metal screws. Opening the door exposes
live electrical connections and hot components.
WARNING
Electrical Shock Hazard
Use extreme caution during start-up.
Controls compartment contains live electrical
connections.
Failure to follow these instructions can result in
death or electrical shock.
10.1 Pre-Start-Up Checks
All pre-start-up checks must be carried out
before lighting the heater.
Ensure that the heater and all controls are suitable
for the gas, pressure and electrical supply to which
they are to be connected.
10.1.1 Louvers
Where fitted, the air delivery louvers need to be set
during start-up to give the required air distribution
(optional vertical louvers).
WARNING
Cut Hazard
Turn off gas and electrical supply before maintenance.
Fan can start automatically at any time.
Failure to follow these instructions can result in severe
injury or product damage.
10.1.2 Electrical Checks
All pre-start-up checks must be carried out before
start-up the heater.
1. Check that all site wiring is connected in
accordance with the appropriate wiring diagram
on Page 16, Section 9.3.
10.1.3 Gas Supply
All aspects of the gas installation including the gas
meter must be inspected, tested for gas tightness
and purged in accordance with local and national
codes.
Ensure that the air is fully purged from the heater
inlet pipe up to the main gas valve inlet test nipple.
10.1.4 Mechanical Checks
1. Check that the fan is free to run and
delivery louvers are turned to give required
air deflection.
2. Check that the flue (and air intake for separated
combustion units) is installed in accordance
with these instructions and local regulations.
10.2 Begin Start-Up
10.2.1 Before Operating the Heater
To ensure that all the controls are in safe working
order, operate the heater for the first time with the
isolating gas valve turned off and power supply
turned on.
1. Turn off the isolating gas valve.
2. Turn up the thermostat above room
temperature. The automatic ignition
sequence will now begin as described
on Page 20, Figure 10.
There will be no ignition of the burner and lockout
will occur, which proves the controls are operating
correctly.