Owner's Guide
Packaged Systems or All-in-One:
Heat Pumps
Air Conditioners
Dual Fuel
Gas / Electric
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Safety Section – Dual Fuel and Gas/Electric Systems
General Information
Understand the signal words DANGER, WARNING, and
CAUTION. These words are safety alert words. DANGER
indicates the most serious hazards which will result in severe
personal injury or death. WARNING indicates hazards which
could result in personal injury or death. CAUTION is used to
indicate unsafe practices which could result in minor injury or
property damage.
When AUTO is selected, the fan will only operate as required
during the heating or cooling cycles. The fan mode can be
used to operate the indoor fan continuously by selecting ON.
Continuous fan mode during cooling operation may not be
appropriate in humid climates. If the indoor air exceeds 60%
relative humidity or simply feels uncomfortably humid, it is
recommended that the fan only be used in the AUTO mode.
To ensure that the thermostat operates properly, it must be
level and positioned to avoid the influence of such external
heat sources as lamps, televisions or other heat-producing
appliances.
Overview
Your combination dual fuel heating/electric cooling unit is
designed to provide comfort all year long with safe, efficient,
trouble-free operation. It is important that you understand how
to operate and maintain your unit to keep it operating safely
and efficiently. This guide will acquaint you with these important
procedures. Familiarize yourself with this manual and store it in
a convenient location for future reference.
Remember these instructions at all times:
• Never perform any maintenance procedures until
the electrical power to the unit is turned off.
• Never perform any maintenance procedures until the
gas valve in the gas supply line is turned off.
Any additions, changes, or conversions required in order for
the unit to satisfactorily meet the application needs, should
be made by a qualified product distributor or local dealer,
using factory specified and approved parts. See Figure 1 for
component layout.
• Never remove any panel from the unit while it is operating.
• Never remove panels or parts from the unit that
are not discussed in this guide.
• Never cover the unit since it is designed to operate
year round.
• Never store anything flammable or combustible
around or near the unit.
Your unit is of complex design. To ensure that it performs safely
and gives long-lasting service, some of the maintenance work
must be performed by a qualified service technician.
When a service technician is referred to in this manual, it is
describing a service technician that has had special training
or a number of years experience in servicing this type of
equipment. It is your responsibility to select a qualified service
company that can provide a service technician of this caliber.
Compressor
Heat
Exchangers
Indoor
Blower
Motor
Gas Valve
Two Stage Cooling Models – For units with the feature of two
staged cooling, the thermostat will determine whether to run
the system at the full capacity or a lower capacity. This depends
on the daily cooling load of the conditioned space. The system is
more efficient when running at low capacity (1st stage). At lower
outdoor temperatures 1st stage will be sufficient to maintain
indoor comfort.
Burners
Note: Depending on furnace size,
your unit may have 1, 2, or 3 burners.
Figure 1. Component Layout
Thermostat
Room thermostats are delicate temperature-sensing controls.
Their main function is to energize and de-energize the heating
or cooling circuit to maintain the temperature setting you select.
With the thermostat set to COOL, the system will automatically
cycle on and off as well as from low (1st stage) to high (2nd
stage) as needed to maintain the thermostat set point for indoor
comfort. During 1st stage operation the compressor, as well
as the indoor fan, will run at a reduced speed. This produces a
reduced capacity which is more efficient than the high capacity
2nd stage. If the low capacity (1st stage) is not sufficient to
maintain the thermostat setting, the system will switch to high
speed (2nd stage). As the thermostat temperature setting is
reached, the system will cycle to low speed then off.
Many thermostats contain a room thermometer to indicate the
approximate room temperature, and a temperature scale to
select the desired indoor air temperature. In addition, most
thermostats have modes of HEAT, OFF and COOL, and fan
modes of ON and AUTO.
When OFF is selected your unit will not operate in either
heat or cool modes. If HEAT or COOL is selected, the unit
will automatically cycle on and off to maintain the desired
temperature settings.
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Regular Owner Maintenance – All Packaged Systems
Note: It may be necessary to replace permanent filters annually
if washing fails to clean the filter, or if the filter shows signs of
deterioration. Be sure to use the same type and size as was
originally installed.
Never use combustible cleaning fluids on any part of the furnace.
You can perform some of the periodic maintenance functions for
the unit yourself; this includes replacing (disposable) or cleaning
(permanent) the air filters, cleaning the cabinet, cleaning the
condenser coil, and conducting a general unit inspection on a
regular basis.
Unit Cabinet
Even though the unit cabinet is designed to withstand exposure
to outdoor weather, you can extend the life of the cabinet panel
by cleaning and waxing it twice each year. Application of a light
coat of automobile wax is recommended.
Air Filters
Condenser Coil
Unfiltered air circulates through the units condenser coil and can
cause the coil's surface to become clogged with dust and dirt.
Have the coils checked by a service technician each cooling season.
It is very important to keep the central duct system air filters
clean. Be sure to inspect them at least once each month when
the system is in constant operation (in new homes, check the
filters weekly for the first 4 weeks).
Be sure to keep all vegetation away from the condenser coil area.
If you have a disposable-type filter replace it with a new filter
of the same type and size. DO NOT ATTEMPT TO CLEAN
DISPOSABLE FILTERS.
General Unit Inspection
Occasionally check over the unit; look and listen for unusual or
abnormal operating characteristics. Do not remove any access
panels. If you suspect your unit is not operating properly, contact
a service technician for instructions.
Permanent-type filters can be cleaned by washing them with a
mild detergent and water. Make sure that the filters are thoroughly
dry before reinstalling them in the unit (or duct system).
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Regular Service Maintenance
For regular dealer maintenance please refer to
HAZARDOUS GASSES
Exposure to fuel substances, or by-products of incomplete fuel
combustion, is believed by the state of California to cause cancer,
birth defects, or other reproductive harm.
ELECTRIC SHOCK HAZARD
To prevent injury or death due to electrical shock or contact
with moving parts. Lock unit disconnect switch in open
position before servicing unit.
This warning complies with State of California law, Proposition 65.
This product must be gas piped by a Licensed Plumber or Gas
Fitter in the Commonwealth of Massachusetts.
Cooling and Heating Season
4. Visually inspect all of the unit's flue product passageways
for excessive deposit buildup or corrosion. If buildup or
corrosion is apparent, perform the necessary repairs.
Basic Maintenance – For All Packaged Systems
To keep your unit operating safely and efficiently, a qualified
service technician should check the entire system seasonally,
and any other time that you feel a check is needed. Your service
technician may examine these areas of the unit:
5. Visually check the main burner flames. They should be bright
blue flames extending up to the heat exchanger sections.
1. Filters (for possible cleaning)
GAS VALVE
MANUAL
ON/OFF
SWITCH
2. Motors (condenser and evaporator motors are
permanently lubricated)
MANIFOLD
3. Gaskets (for possible replacement)
4. Refrigerant coils (for possible cleaning)
5. Safety controls (for mechanical cleaning)
6. Electrical components and wiring (for possible
replacement and connection tightness)
BURNER
GAS VALVE
ORIFICE
7. Condensate drain (for possible cleaning)
8. Inspect the unit duct connections to see that they are
physically sound and sealed to the unit casing.
9. Inspect the unit mounting support to see that it is sound.
Manual On/Off Switch
10. Inspect the unit to see that there is no obvious unit
deterioration.
Figure 2. Gas Valve with On/Off "Toggle" Switch
Heating Season Additional Maintenance – For
Gas/Electric and Dual Fuel Packaged Systems
At the beginning of each heating season arrange for a qualified
service technician to complete the unit inspections and service
routines described in this section.
ELECTRIC SHOCK HAZARD
Should overheating occur, or the gas supply fail to shut off, shut
off the manual gas valve to the furnace before shutting off the
electrical supply.
These steps should be performed ONLY by a qualified service
technician.
In the event that electrical, fuel or mechanical failures occur, the
owner should immediately turn off the gas supply at the manual
gas valve located in the burner compartment and electrical
power to the furnace and contact service technician.
1. Inspect the control panel wiring and heating controls to make
sure connections are tight and wiring insulation is intact.
2. Check the operation of the gas ignition system.
a. Turn the unit on and off at the thermostat to be sure
the ignition control and spark electrode are operating.
IMPORTANT: Some of these products 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.
b.Turn off the gas supply with the unit operating to
verify that the gas valve closes and that a re-ignition
cycle is initiated by the ignition control.
3. Check the burner manifold pressure. A pressure tap is
provided in the gas valve for this purpose.
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Limited Warranty Information
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Important Product Information
Registering your products helps provide you with one of the strongest manufacturer limited warranties available. To register, go to
the manufacturer’s website or contact your dealer. You will need the serial number, model number, and installation date for each
product being registered. Your dealer may have included these on your invoice or can provide a list for you to use. Please take a
few moments to record the following information to ensure your product registration process is quick and easy:
Packaged Unit Serial Number ______________________________________________________________________________________
Packaged Unit Model Number _____________________________________________________________________________________
Date of Installation _______________________________________________________________________________________________
Dealer __________________________________________________________________________________________________________
Service Information
Call your installing dealer if the unit is inoperative. Before you call, always check the following to be sure service is required:
a. Be sure the main switch that supplies power to the unit is in the ON position.
b. Replace any burned-out fuses or reset circuit breakers.
c. Be sure the thermostat is properly set.
Service Phone ___________________________________________________________________________________________________
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safety, comfort and efficiency to homeowners throughout North America. Our quality products, services and
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