Roberts Gorden DAT100 - Manual (Page 27)

SECTION 11: C OMMISSIONING
21
SECTION 11: COMMISSIONING
Gas Fired Heater
Installation, service, commissioning 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, commissioning,
operation, or service of this equipment. All
components are accessed via the hinged door.
Opening the door exposes live electrical
connections and hot components.
Cooling Coils/Condensers
Installation, service, commissioning and annual
inspection of the cooling equipment must be done
by a contractor qualified in the installation and
service of refrigeration equipment. Read condenser
manufacturers manual carefully before installation,
commissioning, operation, or service of this
equipment.
11.1 Pre Commission Checks
All pre commission 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.
11.1.1 Louvers
Where fitted, the air delivery louvers need to be set
during commissioning to give the required air
distribution.
11.1.2 Electrical Checks
1. Check that all site wiring is connected in
accordance with the appropriate wiring dia-
grams
on Page 17, Section 10.3 through Page
20, Section 10.6.
2. Check the correct fuse size is fitted;
See Page 16, Section 10.1.
11.2 Gas Supply
All aspects of the gas installation including the gas
meter must be inspected, tested for soundness and
purged in accordance with local and national codes.
11.3 Mechanical Checks
1. Check that the fan is free to run and that the fan
rotates in the correct direction. To reverse rota-
tion transpose two of the incoming phase con-
nections.
2. Check that the flue and air intake are installed
in accordance with these instructions and local
regulations.
3. Check that the settings of the Combination Fan/
Limit thermostat are correct - See Page 7, Sec-
tion 4.3 and Page 8, Figure 4.4.
NOTE: The second limit thermostat is preset and
sealed at the factory and is not adjustable.
11.4 Begin Commissioning
11.4.1 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.
1. Turn off the isolating gas valve
2. Using the installed external control, turn on the
burner. The automatic sequence will now begin
as described
on Page 22, Figure 12.
There will be no ignition of the burner and lockout
will occur, proving the controls are operating
correctly.
WARNING
Electrical Shock Hazard
Use extreme caution while commissioning.
Failure to follow these instructions can result in
death or electrical shock.
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.