Installation guide

MAIN BURNERS ............................................................................................................................................................................................. 31
CONDENSER COIL, EVAPORATOR COIL, AND
CONDENSATE DRAIN PAN .......................................................................................................................................................................... 33
CONDENSER FAN .......................................................................................................................................................................................... 33
ELECTRICAL CONTROLS AND WIRING .................................................................................................................................................. 34
REFRIGERANT CIRCUIT ............................................................................................................................................................................... 35
GAS INPUT ...................................................................................................................................................................................................... 35
EVAPORATOR AIRFLOW ............................................................................................................................................................................. 35
METERING DEVICE ACUTROL DEVICE ............................................................................................................................................. 35
LIQUID LINE STRAINER .............................................................................................................................................................................. 35
TROUBLESHOOTING ............................................................................................................................................................................................... 35
START-UP CHECKLIST ............................................................................................................................................................................................ 35
NOTE TO INSTALLER Before the installation, READ THESE INSTRUCTIONS CAREFULLY AND COMPLETELY. Also, make sure the
User's Manual and Replacement Guide are left with the unit after installation. The furnace is NOT to be used for temporary heating of buildings
or structures under construction.
A99338
Fig. 1--Unit PYIP and PY2P
(Low NOx Model Available)
SAFETY CONSIDERATIONS
installation and servicing of air*conditioning equipment can be hazardous clue to system pressure and electrical components. Only trained and
qualified personnel should install, repair, or service air*conditioning equipment.
Untrained personnel can perform basic maintenance functions of cleaning coils and filters. All other operations should be performed by trained
service personnel. When working on air-conditioning equipment, observe precautions in the literature, tags, and labels attached to the unit, and
other safety precautions that may apply.
Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations. Have fire extinguisher available for
all brazing operations.
WARNING: Improper installation, adjustment, alteration, service, maintenance, or use can cause carbon monoxide
poisoning, fire, or an explosion which can result in personal injury or unit damage. Consult a qualified installer, service
agency, or gas supplier for information or assistance. The qualified installer or agency must use only factory-authorized kits
or accessories when modifying this product.
A WARNING: Before performing service or maintenance operations on unit, turn off gas supply to unit. Then turn off unit
main power switch and install lockout tag, Electrical shock or explosion could cause serious injury or death.
Recognize safety information. This is the safety-alert symbolz_x. When you see this symbol in instructions or manuals, be alert to the potential
for personal injury.
Understand the signal words DANGER, WARNING, CAUTION, and NOTE. These words are used with the safety*alert symbol. DANGER
identifies the most serious hazards which will result in serious injury or death. WARNING signifies a hazard which could result in serious injury
or death. CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage. NOTE is
used to highlight suggestions which will result in enhanced installation, reliability, or operation.
.... 2==.