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2.0 SAFETY ISSUES
This furnace has been designed to deliver many years of effi cient, dependable service. With regular
maintenance, some of which requires the attention of a qualifi ed installer, service agency or gas supplier,
some of which you may do yourself, the furnace will operate satisfactorily over many heating seasons.
Please read this manual to familiarize yourself with safety procedures, operation, and routine maintenance
procedures. Figure 1 is provided to help identify the components of your furnace.
Do not use this furnace if any part has been under water. A fl ood-damaged furnace is extremely dangerous.
UM
Attempts to use the furnace can result in fi re or explosion. A qualifi ed service agency should be contacted to
inspect the furnace and to replace all gas controls, control system parts, electrical parts that have been wet or
the furnace, if deemed necessary.
FIGURE 1 - FURNACE COMPONENTS
LEGEND
1. Combustion Air Intake Fitting
2. Flame Roll-Out Switch (2)
3. Flame Sensor - located underneath
4. Two Stage Gas Valve
5. Supply Air High Temperature Limit
(behind gas valve)
6. Vent and Drain (Assembly) Coupling
7. Drain for Recovery Coil (3)
8. Condensate Trap (behind fl ange)
9. Two Stage Integrated Furnace Control (IFC) 21. UV Light Bulb (behind panel)
10. Transformer for 24 VAC / 40 VA
11. Burner Assembly
W415-2306 / C / 09.22.20
1
3
4
14
15
8
22
9
16
2
12. Hot Surface Igniter (HSI)
13. Two Speed Exhauster
14. Pressure Switch Assembly
15. Front Manifold Cover Pressure Tap (3)
16. PFC "Choke Coil" (used on ¾ and 1 Hp units only)
17. Door Switch and Junction Box
18. Blower Motor
19. Circulating Air Blower
20. UV Light Ballast
22. LED Trouble Light (2)
H25.0.1
11
12
5
6
13
7
21
20
19
18
17
10
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