UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL
SECTION 11: OPERATION AND MAINTENANCE
DANGER |
| WARNING |
| |
Electrical Shock Hazard | Explosion Hazard | Burn Hazard | Cut/Pinch Hazard | |
Disconnect electric | Turn off gas supply to | Allow heater to cool | Wear protective gear | |
heater before service. | before service. | during installation, | ||
before service. | ||||
|
| operation and service. | ||
Heater must be |
| Tubing may still be hot | ||
|
| |||
connected to a properly |
| after operation. | Edges are sharp. | |
grounded electrical |
|
|
| |
source. |
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|
|
Failure to follow these instructions can result in death, electric shock, injury or property damage.
Read this manual carefully before installation, operation, or service of this equipment. All components are accessed via the door secured by sheet metal screws with grounding strap. Opening the door exposes live electrical connections and hot components.
11.1 Pre-Start-Up Checks
All
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 Electrical Checks
1.Check that all site wiring is connected in accordance with the appropriate wiring diagram on Page 23, Section 10.3.
11.1.2 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.
11.2 Begin Start-Up
11.2.1 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 27, Figure 15.
There will be no ignition of the burner and lockout will occur, which proves the controls are operating correctly.
11.1.3 Mechanical Checks
1.Check that the flue (and air intake for separated combustion units) is installed in accordance with the instructions in this manual and local regulations. See Page 12, Section 7.
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