3
ELECTRICAL WIRING ...............................................22
Low
Voltage
Wiring
..............................................22
Line
Voltage
Wiring
..............................................22
Grounding
............................................................23
Twinning
...............................................................23
START-UP & ADJUSTMENTS ...................................23
Pre-Start
Checklist
.................................................23
Start-Up
Procedures
..............................................23
Verifying and Adjusting Input Rate .........................23
Verifying and Adjusting Temperature Rise .............24
Verifying Burner Operation ....................................24
Verifying Operation of the supply Air
Limit
Switch
............................................................24
OPERATING SEQUENCE .........................................25
Heating
Cycle
........................................................25
Cooling
Cycle
.........................................................25
Fan
Mode
...............................................................25
MAINTENANCE .........................................................25
Air Filters ................................................................25
Blower
Compartment
.............................................25
Cleaning of Burners ...............................................26
Heat Exchanger and Burner Maintenance .............26
Lubrication .............................................................26
Vent
System
...........................................................26
TROUBLESHOOTING ...............................................26
DESCRIPTION OF COMPONENTS ..........................27
FIGURES AND TABLES ............................................27
Table 3 - Minimum Clearances to Combustible
Materials .............................................27
Furnace
Dimensions
..............................................28
Figure 22 - Upfl ow/Horizontal Furnaces ............28
Figure 23 - Downfl ow Furnaces.........................29
Airfl
ow
Data............................................................30
Table 4 - Upfl ow/Horizontal Models ....................30
Table 5 - Downfl ow Models ................................32
Electrical Information ..............................................33
Table 6 - Wire length and Voltage Specs ............33
Table 7 - Control Board Fault Codes ..................33
Figure 24 - Wiring Diagram ................................34
Gas
Information
......................................................35
Table 8 - Gas Flow Rates ...................................35
Table 9 - Gas Pipe Capacities ............................35
Table 10 - High Altitude Deration Chart for
Propane Gas .....................................36
Table 11 - Natural Gas Heating Values ..............36
Table 12 - High Altitude Deration Chart for
Nat. Gas - High Heating Values .........37
Table 13 - High Altitude Deration Chart for
Nat. Gas - Low Heating Values ..........37
Venting
Information
.................................................38
Table 14 - Vent Termination Clearances .............38
Figure 25 - Upfl ow Options .................................39
Figure 26 - Horizontal Options - 1 Pipe
Furnaces
..........................................40
Figure 27 - Horizontal Options - 2-pipe
Furnaces
..........................................41
Figure 28 - Downfl ow Options ............................42
Figure 29 - Horizontal and Vertical Venting ........43
Figure 30 - Optional PVC Pipe Installation .........44
Table 15 - Vent Pipe Lengths .............................44
Accessories
...........................................................45
Figure 31 - Finish Flanges .................................45
Figure 32 - Rubber Grommets...........................45
Figure 33 - PVC TEE, Reducer & Hose Barb .....45
Location of Furnace Components ..........................46
Figure 34 - Upfl ow/Horizontal Gas Furnace
Components.....................................46
Figure 35 - Downfl ow Gas Furnace
Components
....................................46
INSTALLATION/PERFORMANCE CHECKLIST ........48
