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AbOUT ThE ROOFTOP UNIT
This single package electric heating / electric cooling
rooftop unit has been designed and built to provide
many years of safe and dependable comfort, providing
it is properly installed and maintained. With regular
maintenance, this unit will operate satisfactorily year after
year. Abuse, improper use, and/or improper maintenance
can shorten the life of the appliance and create unsafe
hazards. A regular service and maintenance schedule
should be established to ensure efficient and safe operation
of the unit. See System Maintenance on page 3.
ImPORTANT SAFETY INFORmATION
WARNING:
To avoid possible equipment damage, fire, or
personal injury, the following instructions must
be observed regarding unit maintenance and
operational procedures.
• To achieve optimum performance and minimize
equipment failure, it is recommended that periodic
maintenance be performed on this unit. The ability
to properly perform maintenance on this equipment
requires certain mechanical skills and tools. Please
consult your dealer for maintenance information and
availability of maintenance contracts.
• The area around the unit and the vicinity of any other
appliances must be kept clear and free of combustible
materials, gasoline, and other flammable vapors and
liquids. Do not store or use flammable items such as
paint, varnish, or strippers in the vicinity of the unit.
• Do not use the area around the unit as a storage area.
This area must be kept clean and clear of loose or
exposed insulation materials. Examine the unit’s area
when it is installed or when insulation is added, since
some insulation materials may be combustible.
• Do not use this appliance if any part has been under
water. Immediately call a qualified service technician
to inspect the unit and to replace any part of the
electrical control system that has been under water.
• Familiarize yourself with the controls that shut off
the electrical power to the unit. If the unit needs to
be shut down for an extended period of time, turn
off the electrical power. For your safety always turn
off the electrical power before performing service or
maintenance on the furnace.
• Do not block or obstruct air openings on the unit or air
openings supplying the area where it is installed.
• The duct connections must be physically sound and
sealed to the unit’s casing.
The return air and circulating
air ductwork must not be connected to any other heat
producing device such as a fireplace insert, stove, etc.
Doing so may result in fire, explosion, personal injury,
carbon monoxide poisoning, or property damage.
OPERATING INSTRUCTIONS
Thermostat styles vary. Some models may not include
the AUTO mode and others will have the AUTO in place
of the HEAT and COOL. Others may include all three.
Please refer to the thermostat’s User Manual for detailed
programming instructions..
The thermostat should be mounted about 5 feet above the
floor on an inside wall and not on an outside wall or other
location where its operation may be adversely affected by
radiant heat from fireplaces, sunlight, or lighting fixtures,
and convective heat from warm air registers or electrical
appliances.
Cooling Operation
1. Set the thermostat system mode to COOL and the
thermostat fan mode to AUTO. See Figure 1.
2. Set the thermostat temperature selector to the desired
temperature level. The outdoor fans, compressors, and
indoor blower will all cycle on and off to maintain the
indoor temperature at the desired cooling level.
Heating Operation
1. Set the thermostat system mode to Heat and the
thermostat fan mode to AUTO. See Figure 1.
2. Set the thermostat temperature selector to the desired
temperature level. The indoor blower and optional
electric heat module will cycle on and off to maintain
the indoor temperature at the desired heating level.
Operating the Indoor blower Continuously
Set the thermostat fan mode to ON (or CONT on some
thermostat models). See Figure 1.
The indoor blower will start immediately, and will run
continually until the fan switch is reset to AUTO.
The continuous indoor blower operation can be obtained
with the thermostat system switch set in any position,
including OFF.
NOTE:
Continuous indoor blower operation
is typically used to circulate the indoor air to equalize a
temperature imbalance due to a solar load, occupancy
loads, or mechanical equipment operation.
Figure 1. Digital Thermostat
Fan
Mode
Temperature
Selector
System
Mode
