CONTENTS
GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . 3
UNIT INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
VENTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
UPFLOW/HORIZONTAL MODELS - . . . . . . . . . . . . . . . . 10
FILTERS INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 10
UPFLOW/HORIZONTAL MODELS - . . . . . . . . . . . . . . . . 11
DOWNFLOW MODEL APPLICATION . . . . . . . . . . . . . . . 12
OPERATION AND MAINTENANCE. . . . . . . . . . . . . . . . . 23
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
FURNACE ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . 28
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . 29
WIRING DIAGRAM - UPFLOW / HORIZONTAL . . . . . . . 30
WIRING DIAGRAM - DOWNFLOW . . . . . . . . . . . . . . . . . 31
INSTALLATION
INSTRUCTION
CAUTION: READ ALL SAFETY GUIDES BEFORE YOU
START TO INSTALL YOUR FURNACE.
SAVE THIS MANUAL
TWO-STAGE
MID-EFFICIENCY GAS-FIRED
TUBULAR HEAT EXCHANGER SERIES
MODELS: P*DU & G8D-UH (Upflow / Horizontal)
P*DD & G8D-DN (Downflow)
57 - 120 MBH INPUT
035-14527-000 REV A (599)
Form 650.77-N3U
FOR YOUR SAFETY
WHAT TO DO IF YOU SMELL GAS
•
Do not try to light any appliance.
•
Open windows.
•
Do not touch any electrical switch;do not use any phone in
your building.
•
Extinguish any open flame.
•
Immediately call your gas supplier from a neighbor's phone.
Follow the gas supplier's instructions.
•
If you cannot reach your gas supplier, call the fire depart-
ment.
FOR YOUR SAFETY
Do not store or use gasoline or other flammable vapors and liq-
uids in the vicinity of this or any other appliance.
