Installation guide

2. SAFE INSTALLATION REQUIREMENTS
Installation and servicing of air-conditioning equipment can
be hazardous due 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 inthe 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.
FIRE, EXPLOSION, ELECTRICAL SHOCK, AND
CARBON MONOXIDE POISON HAZARD
Improper installation, adjustment, alteration, service,
maintenance, or use can cause carbon monoxide
poisoning, fire, or an explosion which could 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.
FIRE, EXPLOSION, ELECTRICAL SHOCK, AND
CARBON MONOXIDE POISON HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
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.
Recogniz_ safety information. This is the safety-alert
symbol/.rk. 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 may 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.
These instructions cover minimum requirements and
conform to existing national standards and safety codes. In
some instances, these instructions exceed certain local
codes and ordinances, especially those that may not have
kept up with changing residential construction practices.
We require these instructions as a minimum for a safe
installation.
FIRE, EXPLOSION, ELECTRICAL SHOCK, AND CARBON
MONOXIDE POISON HAZARD
Failure to carefully read and follow all instructions in this
manual could result in furnace malfunction, property
damage, personal injury and/or death.
Installation or repairs made by unqualified persons can
result in hazards to you and others. Installation MUST
conform with local building codes or, in the absence of
local codes, with the National Fuel Gas Code NFPA
54-2005/ANSI Z223.1-2005 and the National Electrical
Code NFPA70-2005 or in Canada the National Standard
CAN/CGA B149-1 and CSA C.22.1 - Canadian Electrical
Code Part 1.
The information contained in this manual is intended for
use by a qualified service technician familiar with safety
orocedures and equipped with the proper tools and test
instruments.
SAFETY CONSIDERATIONS
• Use only with type of gas approved for this unit. Refer to
unit rating plate.
• Install this unit only in a location and position as specified
in section 3 of this manual.
• Never test for gas leaks with an open flame. Use a com-
mercially available soap solution made specifically for the
detection of leaks to check all connections, as specified in
section 5.
• Always install unit to operate within the unit's intended
temperature-rise range with a duct system, which has an
external static pressure within the allowable range, as
specified in section 9. Refer to unit rating plate for the al-
lowable external static pressures.
• All connecting ductwork to the unit (supply and return)
must be sealed to the unit casing as specified in section 7.
• Do NOT use this furnace as a construction heater.
• Check to see that filters are installed correctly and are the
proper type an size.
NOTE: It is the personal responsibility and obligation of the
customer to contact a qualified installer to ensure that the
installation is adequate and conforms to governing codes
and ordinances.
UNIT SAFETY
Failureto follow this caution may reduceunit reliability.
It is recommended that a qualified service technician
check the heat exchanger integrity every two (2) years,
after the first four (4) years of operation.
INTRODUCTION
The PDX4 unit is a fully self-contained, combination
Category I gas heating/electric heat pump unit designed for
outdoor installation (See pages 2 to 4 for unit dimensions).
All unit sizes have return and discharge openings for both
horizontal and downflow configurations, and are
factory-shipped with all downflow duct openings covered.