5
MAIN
ON
OFF
SUPPLEMENTAL HEAT
Your heat pump is your primary heating
source. Your system may also be
equipped with a supplemental heating
source such as electric, gas, or oil. On
cold days and nights, your system will
automatically turn on the supplemental
heat in order to maintain the level of
comfort you have selected.
Your Bryant electronic thermostat
will display the words ENERGY SAV-
INGS when the heat pump is providing
all the heat that is necessary. When addi-
tional heat is required, your thermostat
will turn on the supplemental heat
(if equipped) and will display the
AUX HT message.
DEFROST CYCLE
When your heat pump is providing heat
to your home and the outdoor tempera-
ture drops below 45°F, moisture may
begin to freeze on the surface of the
outdoor coil. If allowed to build up, this
ice would impede airflow across the
coil and reduce the amount of heat
absorbed from the outside air. To main-
tain energy-efficient operation, your
heat pump has an automatic defrost
cycle.
The defrost cycle starts at a preset time
interval of 90 minutes, although it may be
reset to either 30 or 50 minutes. Defrost
will start at the preset time only if the ice
is sufficient to interfere with normal heat-
ing operation.
After the ice is melted from the outdoor
coil, or after a maximum of 10 minutes
in the defrost mode, the unit will auto-
matically switch back to normal heating
operation.
Do not be alarmed if steam or fog appears
at the outdoor unit during the defrost
cycle. Water vapor from the melting ice
may condense into a mist in the cold out-
side air.
During certain weather conditions such
as heavy snow and freezing rain it is not
uncommon for ice to build up on the out-
door unit grille. This is normal for these
weather conditions. Do not attempt to
remove the ice from the outdoor unit
grille. This condition will not affect the
proper function of the unit and will clear
within a few days.
EMERGENCY HEAT
The emergency heat (EHEAT) setting
on your Bryant electronic thermostat
can be used to turn off your heat pump
and use only the supplemental heating
source (if equipped). The Auxiliary Heat
Indicator (AUX HT) will be displayed
while your system is operating in
EHEAT mode.
Emergency heat is not normally used.
There may be situations, however,
where it is necessary. Your Bryant
programmable electronic thermostat
has a service alarm indicator. In the
heating season, if the thermostat ever
displays the TROUBLE message,
switch your thermostat to EHEAT
mode and call your dealer. This
allows your supplemental heating
source to keep your home warm until
your heat pump can be serviced. Also,
if the electricity to your heat pump
has been off for more than 30 min-
utes, switch your thermostat to
EHEAT mode before restarting your
heat pump. Leave the system in
EHEAT mode for an amount of time
equal to the power outage. It is not
necessary to exceed 12 hrs. If you
cannot determine how long the power
has been off, leave the system in
EHEAT mode for 8 hrs.
PERFORMING ROUTINE
MAINTENANCE
With the proper maintenance and care,
your heat pump unit will operate
economically and dependably. Main-
tenance can be accomplished easily by
referring to the following directions.
However, before performing mainte-
nance, consider these important safety
precautions.
WARNING
Disconnect all electrical power to
the indoor air handler or furnace
before removing access panels to
perform any maintenance. Dis-
connect power to both the indoor
and outdoor units. NOTE: There
may be more than 1 electrical dis-
connect switch. Electrical shock
can cause personal injury or
death.
CAUTION
Although special care has been
taken to minimize sharp edges
in the construction of your unit,
be extremely careful when han-
dling parts or reaching into the
unit.
!
!
Fig. 4—Main Electrical
Disconnect
Fig. 5—Removing Filter from
Fan Coil Unit
Содержание 698A
Страница 7: ...7...
