SECTION 9: WIRING
9.6 Ladder Wiring Diagram
|
|
|
| 120 VAC |
|
| AXIAL FAN | UHA (300, 350, 400 Only) | |
| AXIAL FAN |
| ||
| FLUE BLOWER |
| ||
|
|
| TRANSFORMER | |
|
|
| GAS VALVE | |
|
|
|
| PRESSURE SWITCH |
FLAME | 3 | 2 | 1 |
|
6 | 5 4 |
| ||
SENSOR |
|
|
|
|
Flame | IGNITION |
| ||
| MODULE | Limit Switch Limit Switch (UHA 300, | ||
ELECTRODE Spark |
|
|
| 350, 400 Only) |
|
|
| Manual Reset Limit Switch | |
|
|
|
| (UHA 30 - 125 Only) |
|
|
|
| THERMOSTAT |
|
|
|
| CONNECTION |
IMPORTANT:
For field wiring into service junction box, or if any of the original wire supplied with the heater
must be replaced, it must be replaced with wiring material having a temperature rating of at least 105° C (221° F) and 600 volts. For supply connections, use No. 14 AWG or larger wires.
27
