W415-0919 / D / 03.27.13
4
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.
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.
LEGEND
1. Combustion Air Intake Fitting
11. Burner
Assembly
2. Flame Roll-Out Switch (2)
12. Hot Surface Igniter (HSI)
3. Flame Sensor
13. T
wo Speed Exhauster
4. T
wo Stage Gas Valve
14. Pressure Switch Assembly
5. Air High
T emperature Limit
15. Front Manifold Cover Pressure T
ap (3)
6. Vent and Drain
Assembly
16. PFC “Choke Coil” (required on ¾ and 1 Hp units)
7. Drain for Recovery Coil (3)
17. Door Switch and Junction Box
8. Condensate T
rap
18. Blower Motor
9. T
wo Stage Integrated Furnace Control (IFC)
19. Circulating Air Blower
10. T
ransformer for 24 VA
C
/ 40VA
1
2
11
12
4
5
6
7
9
16
18
19
17
10
8
15
13
14
3
FIGURE 1 - FURNACE COMPONENTS
