SECTION 11: COMMISSIONING
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
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.
WARNING
Electrical Shock Hazard
Use extreme caution while commissioning.
Failure to follow these instructions can result in death or electrical shock.
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.
WARNING
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.
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.
21
