W415-1007 / A / 07.18.12
3
1.0 InTRoDUCTIon
IMPORTANT
:
plEASE READ ThIS mANuAl CAREFully
AND kEEp IN A SAFE plACE FoR FuTuRE
REFERENCE by A SERVICE TEChNICIAN.
This high efficient gas fired single stage condensing furnace is an upflow, downflow, horizontal left and right
warm air furnace suitable for residential and light commercial heating applications with inputs from 45,000 to
120,000 btu/hr.
This high efficient furnace series is CSA certified as a Category IV indirect or direct vent central forced air
furnace. When installed as a direct vent furnace, all combustion air is supplied to the furnace burners through the
air intake system.
(See Section 7, “Ventilation and Combustion Piping.”)
All models may be fired by natural or lp gas (propane), and may be field converted from natural gas to lp gas
using Conversion kit W370-0018.
The furnace is shipped completely assembled except for the condensate drain trap assembly. please inspect
for damage when the furnace is unpacked.
NOTE: Changes, other than editorial, are denoted by a vertical line in the margin.
13.0
CONvERSIONS
37
13.1
CoNVERSIoN STEpS
37
13.2
ChECkINg ThE INlET gAS pRESSuRE
37
13.3
SETTINg ThE mANIFolD gAS pRESSuRE
38
13.4
ChECkINg FuRNACE INpuT
39
14.0
ELECTRICAL SPECIFICATIONS
40
14.1
ElECTRICAl WIRINg AND CoNNECTIoNS
40
14.2
FuRNACE CoNNECTIoN
41
15.0
LOW vOLTAGE WIRING
42
15.1
ThERmoSTAT loCATIoN
42
16.0
OPTIONAL ACCESSORIES (FIELD SUPPLIED/INSTALLED)
43
16.1
ElECTRIC AIR ClEANER
43
16.2
poWER humIDIFIER
43
16.3
EmERgENCy hEAT moDE, x13 bloWER moToR
43
17.0
STARTUP PROCEDURES
44
17.1
To START ThE FuRNACE
44
17.2
To ShuT DoWN ThE FuRNACE
44
17.3
SEquENCE oF opERATIoN
45
18.0
AIR FLOW
46
18.1
TEmpERATuRE RISE ChECk
46
18.2
CAlCulATINg AIR FloW
47
18.3
CoNTINuouS FAN opERATIoN
47
19.0
MAINTENANCE AND TROUBLESHOOTING
48
19.1
AIR FIlTER
48
19.2
lubRICATIoN
49
19.3
TRoublEShooTINg FloWChART
50
19.4
DIAgNoSTIC CoDES FoR STATuS lED
51
19.5
FAulT CoDE hISToRy
51
20.0
WIRE DIAGRAM FOR SINGLE STAGE FURNACE WITH x13 ECM, AND PSC
52
21.0
WARRANTY
53
22.0
SINGLE STAGE REPLACEMENT PARTS LIST
54
23.0
SERvICE HISTORY
56
ATTENTION
:
upFloW VENTINg RIghT, muST DRAIN oN
lEFT SIDE.
