OWNER’S MANUAL
WIRING DIAGRAMS
REPLACEMENT
|
|
|
|
| Thermostat | ||
|
|
|
|
| Red | White | |
|
|
| Junction |
| |||
| Black |
|
| Box |
| ||
|
|
|
| ||||
|
|
|
| ||||
V.A.C. |
|
|
| Black | Black | ||
Green |
|
|
|
|
| Terminal Block | |
115 |
|
|
|
|
| ||
|
|
|
|
|
| ||
|
|
|
|
|
|
| |
▲White |
|
|
| White |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Limit | Sail Switch |
| Switch | |
|
| |
Red | Black |
|
Time Delay |
| Green |
| Brown | |
Relay |
| |
| Orange | Yellow |
|
| |
| Blue |
|
1 |
|
2 | Ignition |
3 | Control |
Board |
4
5 (Open)
6
PARTS
Note: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty.
All parts listed herein may be ordered from your equipment supplier.
When ordering repair parts, always give the following information:
| Black |
|
| Yellow |
Transformer |
|
| ||
|
| Brown | ||
|
|
|
| |
|
| 370 V.A.C. |
| |
|
| Capacitor |
|
|
|
| 5 MFD | Yellow | Gas Valve |
| White |
| ||
|
|
| White | |
| Brown |
|
| |
|
|
|
| |
| Brown |
| White |
|
White | Brown | Black |
| |
| Motor |
| Note: |
|
| Green |
|
| |
7
Black
♦Black Probe
White
White
•model number of your furnace
•type of gas, natural or propane/LP
•the replacement part number and de- scription
SERVICE HINTS
When Gas Pressure Is Too Low
•
▲ 
♦ 
Figure 20 - Wiring Diagram (25,000 BTU/Hr Model)
When Gas Quality Is Bad
•burner will not stay lit
•burner will produce flames and soot
|
|
| Limit | Sail Switch |
|
|
| Switch | |
Thermostat |
|
|
| |
White |
|
|
| |
White | Red ★ | Black ★ |
|
|
| Junction |
|
| Green |
|
| Box |
| Time Delay | |
|
|
|
| Brown | |
V.A.C. | Black | Black | Black | Relay | |
Green |
| Terminal Block |
| Yellow | |
|
|
|
| ||
115 |
|
|
|
| |
|
|
|
| Orange | |
▲White | White |
|
| ||
|
| Blue | |||
|
| Red |
|
| |
|
|
|
| Brown | |
| Transformer | Black |
| ||
|
|
| Brown | ||
|
|
|
|
| |
370V.A.C. Capacitor
White | 5 MFD | Brown | Gas Valve |
White |
| White | |
|
| ||
Brown |
|
| |
|
|
| |
White | Brown | White |
|
|
| ||
Black |
|
| |
Motor |
|
| |
Note: |
|
| |
Green |
|
|
1 |
|
2 | Ignition |
3 | Control |
Board |
4
5 (Open)
6
7
Black
♦Black Probe
White
White 
You may feel your gas pressure is too low or gas quality is bad. If so, contact your local gas supplier.
TECHNICAL
SERVICE
You may have further questions about in- stallation, operation, or troubleshooting. If so, contact your installer, a qualified service person, or Williams Technical Help Line at
★ 
▲ 
♦ 
Figure 21 - Wiring Diagram (40,000 BTU/Hr Model)
201842 | 19 |
