Nordyne Outdoor Heat Pump T3BN - Manual (Page 2)

2
2. Set the thermostat temperature to the
desired temperature level using the
temperature selector. Please refer to
the separate detailed thermostat user’s
manual for complete instructions regarding
thermostat programming. The outdoor unit
and indoor blower will both cycle on and off
to maintain the indoor temperature at the
desired heating level.
NOTE: If the thermostat temperature level is
re-adjusted, or the thermostat system switch
is repositioned, the outdoor unit may not
start immediately. The outdoor unit contains
a protective timer circuit which holds the unit
off for approximately fi ve minutes following
a previous operation, or the interruption of
the main electrical power.
Emergency Heat:
The thermostat includes a system switch
position termed EM. HT. This is a back-up
heating mode to be used only if there is a
suspected problem with the outdoor unit. With
the system switch set to EM. HT. the outdoor
unit will be locked off, and supplemental heat
(typically 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 may develop a coating of snow
and ice on the heat transfer coil. This is
Figure 1. Typical Thermostat
OPERATING INSTRUCTIONS
TO OPERATE YOUR HEAT PUMP
FOR COOLING —
1. Set the thermostat system switch to COOL
and the thermostat fan switch to AUTO. (See
Figure 1)
2. Set the thermostat temperature to the desired
temperature level using the temperature
selector. Please refer to the separate
detailed thermostat user’s manual for
complete instructions regarding thermostat
programming. The outdoor unit and indoor
blower will both cycle on and off to maintain
the indoor temperature at the desired cooling
level.
NOTE: If the thermostat temperature level is
re-adjusted, or the thermostat system switch
is repositioned, the outdoor unit may not
start immediately. The outdoor unit contains
a protective timer circuit which holds the unit
off for approximately fi ve minutes following a
previous operation, or the interruption of the
main electrical power.
TO OPERATE YOUR HEAT PUMP
FOR HEATING —
1. Set the thermostat system switch to HEAT
and the thermostat fan switch to AUTO. (See
Figure 1)
TEMPERATURE
SENSOR FAN
SWITCH SYSTEM
MODE