NOTE: Read the entire instruction manual before starting the
installation.
This symbol → indicates a change since the last issue.
TABLE OF CONTENTS
Introduction ....................................................................................2
Safety.........................................................................................5
Duct Systems ............................................................................5
Applications....................................................................................6
General ......................................................................................6
Applications ............................................................................10
Location ........................................................................................13
General ....................................................................................13
Equipment ...............................................................................14
Installation ....................................................................................15
Applications ............................................................................15
Air Ducts.................................................................................16
Gas Piping...............................................................................19
installation, start-up,
and operating instructions
2-STAGE, DIRECT VENT
CONDENSING GAS FURNACE
A93040
-1-
Cancels: II 352M-60-6
115-V Wiring.....................................................................20
24-V Wiring.......................................................................21
Accessories ........................................................................22
Direct Venting.........................................................................22
Systems ..............................................................................22
Kit Installation ...................................................................30
Condensate Drain....................................................................34
General...............................................................................34
Application.........................................................................34
General ....................................................................................34
Purge Gas Lines......................................................................36
(Adaptive Mode)................................................................37
Cooling Mode ....................................................................44
Heat Pump .........................................................................45
Operate Furnace.................................................................46
Furnace Restart ..................................................................46
Adjustments.............................................................................46
Checklist..................................................................................49
352MAV
Series C
II 352M-60-7
3-05