W415-2845 / B / 11.10.20
4
IOM
IOM
H3.3.1
Understand and pay particular attention to the words DANGER, WARNING, and CAUTION and the following
defi ned symbols are used throughout this manual to notify the reader of potential hazards of varying risk levels.
DANGER
! !
INDICATES AN IMMINENTLY HAZARDOUS SITUATION WHICH, IF NOT AVOIDED, WILL
RESULT IN DEATH OR SERIOUS INJURY.
INDICATES A POTENTIALLY HAZARDOUS SITUATION WHICH, IF NOT AVOIDED,
COULD RESULT IN DEATH OR SERIOUS INJURY.
WARNING
!
!
INDICATES A POTENTIAL HAZARDOUS SITUATION WHICH, IF NOT AVOIDED, MAY
RESULT IN MINOR OR MODERATE INJURY. IT MAY ALSO BE USED TO ALERT
AGAINST UNSAFE PRACTICES.
CAUTION
!
!
H6.0
IMPORTANT:
READ THE FOLLOWING INSTRUCTIONS COMPLETELY BEFORE INSTALLING!
1.0 INTRODUCTION
H4.0.8A
This high effi cient gas fi red two stage condensing furnace is an upfl ow, horizontal right warm air furnace
suitable for residential and light commercial heating applications with inputs from 40,000 to 80,000 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.”)
The furnace is shipped completely assembled except for the condensate drain trap assembly and the furnace
upper door. Please inspect for damage when the furnace is unpacked.
2.0 SAFETY SYMBOLS AND WARNINGS