W415-0973 / B / 08.28.13
3
IOM
1.0 INTRODUCTION
NOTE: Changes, other than editorial, are denoted by a vertical line in the margin.
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 ECM BLOWER MOTOR 43
17.0 STARTUP PROCEDURES 44
17.1 TO START THE FURNACE 44
17.2 TO SHUT DOWN THE FURNACE 45
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 48
19.3 TROUBLESHOOTING FLOWCHART 49
19.4 DIAGNOSTIC CODES FOR STATUS LED 50
19.5 FAULT CODE HISTORY 50
20.0 WIRE DIAGRAM FOR SINGLE STAGE FURNACE WITH X13 ECM, AND PSC 51
21.0 WARRANTY 52
22.0 SINGLE STAGE REPLACEMENT PARTS LIST 53
23.0 SERVICE HISTORY 55
24.0 NOTES 56
H4.0.2
This high effi cient gas fi red single stage condensing furnace is an upfl ow, downfl ow, 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 effi cient furnace series is CSA certifi ed 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 fi red by natural or LP gas (propane), and may be fi eld 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.
H1.22
IMPORTANT:
PLEASE READ THIS MANUAL CAREFULLY
AND KEEP IN A SAFE PLACE FOR FUTURE
REFERENCE BY A SERVICE TECHNICIAN.
ATTENTION:
UPFLOW VENTING RIGHT, MUST DRAIN ON
LEFT SIDE.
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