Upflow Furnace Models |
|
|
| |
1 | Igniter (Not Shown) | 18 |
|
|
2 | Flame Sensor (Not |
|
| |
|
|
| ||
| Shown) |
|
| 19 |
3 | Gas Valve | 4 |
|
|
4 | Flame |
| 16 | |
5 | Pressure Switch |
|
|
|
6 | Vent Pressure Switch | 1 |
|
|
| (Not Shown) |
| 2 | |
7 | Control Board | 3 |
| |
8 | Blower Door |
|
| |
|
| 11 | ||
| Switch |
| 10 | |
9 | Vent Safety Switch | 5 | 15 | |
10 | Low Voltage |
| ||
|
|
| ||
| Transformer | 7 |
| 13 |
11 | Supply Air Limit | 17 |
| |
| Switch |
|
| |
|
|
|
| |
12 | Circulating Air | 8 |
|
|
| Blower Assembly- |
|
| |
|
|
|
| |
13 | Induced Draft |
|
| 9 |
| Blower |
|
|
|
14 | Condensate Drain Tube |
|
|
|
15 |
| 12 |
| |
| Assembly |
|
| |
|
|
|
| |
16 | Burner View Port |
|
|
|
17 | Front Header Box |
|
|
|
18 | Combustion Air | 14 |
|
|
| Intake |
|
|
|
19 | Exhaust Vent |
|
|
|
Downflow Furnace Models |
|
| 19 | |
1 | Igniter (Not Shown) |
|
| 18 |
|
|
| ||
2 | Flame Sensor (Not | 10 |
|
|
| Shown) |
|
|
|
3 | Gas Valve |
|
| 12 |
4 Flame |
|
| ||
|
|
| ||
| Switch(s) | 7 |
|
|
5 | Pressure Switch | 8 |
| 15 |
7 | Control Board |
| ||
|
| |||
|
|
| ||
8 | Blower Door |
|
|
|
| Switch |
|
|
|
9 | Vent Safety Switch | 5 |
|
|
10 | Low Voltage |
|
|
|
| Transformer |
|
|
|
11 | Supply Air Limit | 13 |
| 17 |
| Switch |
|
| |
| 9 |
|
| |
12 | Circulating Air |
|
| |
| Blower Assembly- | 14 |
|
|
13 | Induced Draft |
|
| |
| Blower |
|
|
|
14 | Condensate Drain |
|
|
|
15 | Tube | 11 |
|
|
|
|
| ||
| Assembly | 3 |
| 2 |
16 | Burner View Port |
| ||
|
|
| ||
17 | Front Header Box | 1 |
| 16 |
18 | Combustion Air |
| ||
| Intake | 4 |
|
|
19 | Exhaust Vent |
|
| |
|
|
|
Figure 30. Location of Major Components
37