Nordyne Q4 Series 사용자 설명서

4

1. Set the thermostat system switch to COOL

and the thermostat fan switch to AUTO.  (See
Figure 1)

2. Set the thermostat temperature selector to

the desired cooling temperature.  The outdoor
unit fan, the indoor blower, and the
compressor will all cycle on and off to maintain
the indoor temperature at the desired cooling
level.

NOTE:  If the thermostat temperature level is re-
adjusted, or if the thermostat system switch is re-
positioned,  the  outdoor unit  fan and  the
compressor may not start immediately. A
protective timer circuit  holds the compressor
and the outdoor fan off for approximately six
minutes following a previous operation or the
interruption of the main electric power

1. Set the thermostat system switch for HEAT

and the thermostat fan switch to AUTO.  (See
Figure 1)

2. Set  the thermostat temperature  selector  to

the desired heating temperature.  The outdoor
unit fan, the indoor blower, and the
compressor  will  all  cycle on and off to
maintain the indoor temperature at the desired
heating level.

NOTE: If the thermostat temperature level is re-
adjusted, or if the thermostat system switch is re-
positioned,  the  outdoor unit fan and the
compressor may not start immediately.  A
protective timer circuit  holds the compressor
and the outdoor fan off for approx-imately six
minutes following a previous operation or the
interruption of the main electrical power.

Emergency Heat — Some thermostats will
include a system switch position termed EM HT
or AUX HT, etc.  This is a back-up heating mode
to be used only if there is a suspected problem.
With the system switch set to EM HT, etc., the
compressor and outdoor fan will be locked off
and supplemental heat (electric resistance
heating) will be used as a source of heat.
Sustained use of electric resistance heat in
place of the heat pump will result in an increase
in electric utility costs.

Defrost — During cold weather heating
operation, the outdoor unit will develop a coating
of snow and ice on the heat transfer coil.  This is
normal and the unit will periodically defrost itself.
During the defrost cycle, the outdoor fan will
stop, while the compressor continues to run and
heat the outdoor coil, causing the snow and ice
to melt.  During defrost, there may be some
steam rise from the outdoor unit as the warm coil
causes some melted frost to evaporate.

Model Series Q4 Single Package Heat Pumps
are designed for outdoor rooftop or ground level
slab installations.  The units are shipped ready
for horizontal duct connections and are easily
converted for down flow applications.

FAN SWITCH

TEMPERATURE SELECTOR