Allied Air Enterprises 4PGE User Manual
INSTALLATION AND MAINTENANCE INSTRUCTIONS
4PGE/SG(13,15) Series
Gas Heating/Electric Cooling Package Unit
Save these instructions for future reference
WARNING
Improper installation, adjustment, alteration, service, or maintenance can cause injury
or property damage. Refer to this manual. For assistance or additional information,
consult a qualified installer, service agency, or the gas supplier.
WARNING
Do not store combustible materials, including gasoline
and other flammable vapors and liquids, near the furnace,
vent pipe, or warm air ducts. Such actions could cause
property damage, personal injury, or death.
WARNING
Never use a flame to check for gas leaks. Explosion
causing injury or death may occur.
WARNING
If this unit is to be installed in a mobile or manufactured
home application, the ductwork must be sized to achieve
static pressures within the manufacturer’s guidelines.
All other installation guidelines must also be followed.
Failure to do so may result in equipment damage,
personal injury, and improper performance of the unit.
TABLE OF CONTENTS
SAFETY ...............................................................2
INSTALLATION ....................................................2
START-UP .......................................................... 10
OPERATION ...................................................... 11
MAINTENANCE ................................................. 13
CONTROL SYSTEM DIAGNOSTICS ................. 14
WIRING DIAGRAMS .......................................... 15
Manufactured By
Allied Air Enterprises Inc.
A Lennox International Inc. Company
215 Metropolitan Drive
West Columbia, SC 29170
*506488-01*
CAUTION
The installation of the furnace, wiring, warm air ducts, venting, etc. must conform to the requirements of the National Fire
Protection Association; the National Fuel Gas Code, ANSI Z223.1 (latest edition) and the National Electrical Code, ANSI/
NFPA No. 70 (latest edition) in the United States; the Canadian Installation Codes CAN/CGA-B149.1 & .2 (latest edition)
and the Canadian Electrical Code Part 1, CSA 22.1 (latest edition) in Canada; and any state or provincial laws, local
ordinances, or local gas utility requirements. Local authorities having jurisdiction should be consulted before installation
is made. Such applicable regulations or requirements take precedence over the general instructions in this manual.
506488-01 Page 1Issue 1008
SAFETY
INSTALLATION
The following is a list of safety rules and precautions that
must be followed when installing this furnace.
1. Use only with the type of gas approved for this furnace.
Refer to the furnace rating plate.
2. Install this furnace only in a location and position as
specified in the Location section on page 3 of these
instructions.
3. Adequate clearance must be provided around the vent
hood as specified in the Clearances section on page 4 of
these instructions.
4. Never test for gas leaks with an open flame. Use a
commercially available soap solution made specifically
for the detection of leaks to check all connections, as
specified in Gas Supply and Piping beginning on page
6 of these instructions.
5. Always install furnace to operate within the furnace’s
intended temperature-rise range with a duct system which
has an external static pressure within the allowable range,
as specified in Temperature Rise on page 11 of these
instructions. See furnace rating plate.
These instructions must be hung on or near the furnace
in a conspicuous place.
These units are single package air conditioners with gas heat
designed for outdoor installation on a rooftop or a slab.
The units are completely assembled. All piping, refrigerant
charge, and electrical wiring are factory installed and tested.
The units require only electric power, gas piping, condensate
drain, and duct connections, plus assembly of the heating
vent hood at the point of installation.
If components are to be added to a unit to meet local codes,
they are to be installed at the dealer’s and/or customer’s
expense.
The size of unit for the proposed installation should be based
on heat loss/heat gain calculation made according to the
methods of Air Conditioning Contractors of America (ACCA).
These installation instructions are intended as a general
guide only, for use by an experienced, qualified
contractor.
These units are listed by UL:
6. The furnace is not recommended for use for temporary
heating of buildings or structures under construction unless
certain installation and operating conditions are adhered
to, as specified in the Location section on page 3 of these
instructions.
WARNING
In the State of Massachusetts:
This product must be installed by a licensed Plumber
or Gas Fitter. When flexible connectors are used, the
maximum length shall not exceed 36". When levertype gas shutoffs are used, they shall be T-handle type.
• For use as a forced air furnace with cooling unit.
• For outdoor installation only.
• For installation on combustible material.
• For use with natural gas or propane gas.
(Conversion kit required for propane gas application.)
These units are not suitable for use with conventional
venting systems.
IMPORTANT: The 15 SEER models have been designed
and manufactured to meet ENERGY STAR criteria for energy
efficiency. However, proper refrigerant charge and proper air
flow are critical to achieve rated capacity and efficiency.
Installation of this product should follow the manufacturer’s
refrigerant charging and air flow instructions. Failure to
confirm proper charge and airflow may reduce energy
efficiency and shorten equipment life.
Inspection
As soon as the unit is received, it should be inspected for
possible damage during transit. If damage is evident, the
extent of the damage should be noted on the carrier’s freight
bill. A separate request for inspection by the carrier’s agent
should be made in writing.
Page 2 506488-01Issue 1008
Location
Use the following guidelines to select a suitable location for
the unit.
1. Unit is designed for outdoor installation only. Unit must
be installed so all electrical components are protected
from water.
2. Condenser coils must have an unlimited supply of air.
3. For ground level installation, use a level prefabricated
pad or use a level concrete slab. Do not tie the slab to
the building foundation.
4. Maintain level within a tolerance of 1/4" maximum across
the entire length or width of the unit.
5. Do not locate the unit where the combustion air supply
will be exposed to any of the following substances:
• Permanent wave solutions
• Chlorinated waxes and cleaners
• Chlorine-based swimming pool chemicals
• Water softening chemicals
• Deicing salts or chemicals
• Carbon tetrachloride
• Halogen-type refrigerants
• Cleaning solvents (such as perchloroethylene)
• Printing inks, paint removers, varnishes, etc.
• Cements and glues
• Antistatic fabric softeners for clothes dryers
• Masonry acid washing materials
• Chlorinated laundry products
• Hydrochloric acid
Use of unit as a construction heater during any phase of
construction is not recommended. Very low return air
temperatures, harmful vapors, and operation of the unit with
clogged or misplaced filters will damage the unit. However,
if the installation and operating conditions specified below
are followed, use of this unit for heating of buildings or
structures under construction is permissible:
• The vent hood must be installed per these installation
instructions.
• Air filters must be replaced upon construction completion.
• The input rate and temperature rise must be set per the
unit rating plate.
• 100% outdoor air must be provided for combustion air
requirements during construction. Installation of this unit
in its intended outdoor location will accomplish this.
• The heat exchanger, components, duct system, air
filter(s), and evaporator coil must be thoroughly cleaned
following final construction cleanup.
• Following the final cleaning, all furnace operating
conditions (including ignition, input rate, temperature
rise, and venting) must be verified according to these
instructions.
Exercise care when moving the unit. Do not remove any
packaging until the unit is near the place of installation. An
accessory lift kit can be purchased to aid in rigging (see
Figure 1). Spreaders whose length exceed the largest
dimension across the unit must be used across the top of
the unit. Recommended spreader length: 3 ton and smaller
package units – 44", 3.5 ton and larger units – 54".
Units may also be moved or lifted with a forklift while still in
the factory-supplied packaging. The lengths of the forks
of the forklift must be a minimum of 42".
CAUTION
Before lifting a unit, make sure that the weight is
distributed equally on the cables so that it will lift evenly.
Using Accessory Lift Kit
Spreaders
(Field Supplied)
Lifting Bracket
Accessory
Sheet Metal
Screw
• A room thermostat must control the furnace. The use
of fixed jumpers that will provide continuous heating is
not allowed.
• The return air duct must be provided and sealed to the
unit.
• Return air temperature must be maintained between
60°F (16°C) and 80°F (27°C).
• Air filters must be installed in the system and must be
maintained during construction.
506488-01 Page 3Issue 1008
To avoid possible
damage to unit
panels from lifting
clevis, place
packing material
between clevis
and panels before
lifting unit.
Figure 1
Roof Curb Installation
If a roof curb is used, follow the manufacturer’s Installation
Instructions and be sure that all required clearances are
observed (see following Clearances section).
Roof Curb Assembly
Figure 2
Clearances
All units require certain clearances for proper operation and
service. Refer to Table 1 for the minimum clearances to
combustibles as well as minimum clearances necessary for
servicing and proper unit operation.
Minimum Clearance Requirements
Minimum Clearance to Combustibles
Above and Below the Vent Hood
Minimum Clearance
Above Vent Hood:
Distance from Top
of Vent Hood to Top
of Unit
Minimum Clearance
Below Vent Hood:
Distance from Bottom
of Vent Hood to Base
of Unit
Figure 3
In the U.S., units may be installed on combustible floors made
from wood or class A, B, or C roof covering material. In Canada,
units may be installed on combustible floors.
oT
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lairetaM
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raeR "0 "42 "3
resnednoC
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rewolB
dnE
poT"0"63"63
"0"42"3
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ecivreS
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Table 1
Figure 3 shows the minimum clearances to combustibles
required above and below the vent hood. The minimum
clearance in front of the vent hood is 24".
Do not permit overhanging structures or shrubs to
obstruct condenser air discharge outlet or vent outlet.
Service Access
Access to all serviceable components is provided by four
removable panels: filter compartment, blower compartment,
furnace compartment, and top panel.
Combustion Products Discharge
The unit must be positioned such that combustion products
discharged at the vent outlet will not result in building
degradation and must be consistent with the National Fuel
Gas Code, Z223.1 or CAN/CGA-B149.1 & .2.
The products of combustion are discharged through a
screened opening in the front mullion. The horizontal vent
system shall terminate at least 4' below, 4' horizontally from,
or 1' above any door, window, or gravity air inlet into the
building. The vent system shall terminate at least 3' above
any forced air inlet located within 10'.
The unit shall be installed in a manner such that snow
accumulation will not restrict the flow of flue products.
In addition to the above requirements, consideration must
be given to prevent unwanted ice buildup from the vent
condensate. The vent should not be located on the side of
a building where the prevailing winter winds could trap the
moisture, causing it to freeze on the walls or on overhangs
(under eaves). The vent location should not discharge over
Page 4 506488-01Issue 1008
a sidewalk, patio, or other walkway where the condensate
could cause the surface to become slippery.
The products of combustion must not be allowed to
accumulate within a confined space and recirculate.
WARNING
CARBON MONOXIDE POISONING HAZARD
Vent Hood
The unit is shipped with the vent hood, screen, and sheet
metal screws packed in the plastic bag containing the
Installation Instructions.
To attach the vent hood and screen to the unit:
1. Insert the vent screen into the vent tube so that the screen
is flush with the end of the tube, as shown in Figure 4.
Installing Vent Hood
Front View
Screen
Vent Tube
Screen is pre-formed
Top View
Screen
Vent Hood
Slotted side of
vent hood faces
condenser coil.
Vent Tube
NOTE:
Screws should
pass through
sides of screen
to hold screen
in place.
Figure 4
2. Position the vent hood over the vent tube so that the
slotted side of the hood faces the condenser coil. Use
the four sheet metal screws (provided) to secure the
vent hood to the vent tube. The screws should pass
through the sides of the screen in order to hold the
screen in place.
Existing Venting Systems
When an existing furnace is removed or replaced, the original
venting system may no longer be sized to properly vent the
attached appliances. An improperly sized venting system can
result in spillage of flue products into the living space, the
formation of condensate, leakage, etc. See the accompanying
WARNING box for proper test procedure.
Failure to follow the steps outlined below for each
appliance connected to the venting system being
placed into operation could result in carbon monoxide
poisoning or death.
The following steps shall be followed for each appliance
connected to the venting system being placed into
operation, while all other appliances connected to the
common venting system are not in operation:
1. Seal any unused openings in the common venting
system.
2. Visually inspect the venting system for proper size
and horizontal pitch, as required in the National Fuel
Gas Code, ANSI Z223.1/NFPA 54 (latest edition) or
the CSA B149.1, Natural Gas and Propane
Installation Codes and these instructions. Determine
that there is no blockage or restriction, leakage,
corrosion, or other deficiencies which could cause
an unsafe condition.
3. As far as practical, close all building doors and
windows between the space in which the
appliance(s) connected to the venting system are
located and other spaces in the building.
4. Close fireplace dampers.
5. Turn on clothes dryers and any appliance not
connected to the venting system. Turn on any
exhaust fans, such as range hoods and bathroom
exhausts, so they are operating at maximum speed.
Do not operate a summer exhaust fan.
6. Follow the lighting instructions. Place the unit being
inspected in operation. Adjust the thermostat so
appliance is operating continuously.
7. Test for spillage from draft hood equipped appliances
at the draft hood relief opening after 5 minutes of
main burner operation. Use the flame of a match or
candle.
8. If improper venting is observed during any of the
above tests, the venting system must be corrected
in accordance with the National Fuel Gas Code,
ANSI Z223.1/NFPA 54 (latest edition) and/or the
CSA B149.1, Natural Gas and Propane Installation
Codes.
9. After it has been determined that each appliance
remaining connected to the venting system properly
vents when tested as outlined above, return doors,
windows, exhaust fans, fireplace dampers, and any
other gas-fired burning appliance to their previous
conditions of use.
506488-01 Page 5Issue 1008
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