Nordyne M3RL Series - Manual (Page 32)

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M3 Downflow Furnace
1 Door Assembly - Louvered
2 Filter Inside Door
3 Blower Assembly
4 Control Board
5 Pressure Switch
6 Flame Rollout Switch
7 “J” Trap Hard Tube
8 Low Voltage Transformer
9 In Line Drain Assembly
10 Junction Box
11 Vent Safety Switch
Figure 29. Location of Major Components
12 Ignitor Assembly
13 Burner View Port
14 Main Limit Switch
15 Coil Cabinet Assembly (Optional)
16 Flame Sensor (On Burner Box)
17 Gas Valve
18 Switch, On/Off
19 Blower, Inducer
20 Orifice (In Burner Box)
21 Aux. Limit
22 Burner Box