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Sequence of Operation
and the unit will revert back to the compressor only heating mode
and then off. For
emergency heat
(use of supplementary electric
heat only), an emergency
(EMERG)
heat switch is provided
within the thermostat. When placed in the emergency heat
position, it will disable the compressor, bypass the outdoor
thermostats, if provided, and engage the supplementary electric
heaters and indoor fan.
DEMAND DEFROST OPERATION
During the heating cycle, the outdoor coil may require a defrost
cycle which is determined by the demand defrost control
(DFC)
.
This control continuously measures the outdoor coil tempera-
ture
(CBS)
and the outdoor ambient temperature
(ODS-B)
and
calculates the difference or delta-T measurement. When the
calculated delta-T is met, the demand defrost control
(DFC)
opens the circuit to the outdoor fan motor
(ODM)
and energizes
the switch-over valve
(SOV)
, placing the unit in the cooling
mode to defrost the outdoor coil. The outdoor coil temperature
sensor
(CBS)
terminates the defrost cycle, or times off after
twelve minutes in defrost, the
(DFC)
energizes the outdoor fan
motor
(ODM)
and fifteen seconds later de-energizes the
(SOV)
,
which returns the unit to the heating mode. Supplementary
electric heat, if provided, is brought on to control indoor tempera-
ture during the defrost cycle.
The following warning complies with State of California law, Proposition 65.
▲
WARNING:
This product contains
fiberglass wool insulation!
Fiberglass dust and ceramic
fibers are believed by the State of California to cause
cancer through inhalation. Glasswool fibers may also
cause respiratory, skin, or eye irritation.
PRECAUTIONARY MEASURES
●
Avoid breathing fiberglass dust.
●
Use a NIOSH approved dust/mist respirator.
●
Avoid contact with the skin or eyes. Wear long-
sleeved, loose-fitting clothing, gloves, and eye
protection.
●
Wash clothes separately from other clothing: rinse
washer thoroughly.
●
Operations such as sawing, blowing, tear-out, and
spraying may generate fiber concentrations requiring
additional respiratory protection. Use the appropriate
NIOSH approved respirator in these situations.
FIRST AID MEASURES
Eye Contact -
Flush eyes with water to remove dust.
If symptoms persist, seek medical
attention.
Skin Contact -
Wash affected areas gently with soap
and warm water after handling.
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
C
all 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_________________________________________________________________
