W415-1117 / A / 03.11.14
3
IOM
1.0 INTRODUCTION
NOTE: Changes, other than editorial, are denoted by a vertical line in the margin.
15.0
LOW VOLTAGE WIRING
43
15.1 THERMOSTAT
LOCATION
43
16.0
OPTIONAL ACCESSORIES (FIELD SUPPLIED/INSTALLED)
43
16.1 ELECTRIC
AIR
CLEANER
43
16.2 POWER
HUMIDIFIER
43
17.0
INITIAL 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 PSC
52
21.0 WARRANTY
53
22.0
SINGLE STAGE REPLACEMENT PARTS LIST
54
23.0 SERVICE
HISTORY
56
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.
H4.0.1
This high ef
fi
cient gas
fi
red single stage condensing furnace is an up
fl
ow, horizontal left and right warm air
furnace suitable for residential and light commercial heating applications with inputs from 30,000 to 120,000
Btu/hr.
This high ef
fi
cient furnace series is CSA certi
fi
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.