T600HPx-4 and T600HPx-4+PIR Series Heat Pump Thermostat Controllers Installation Instructions
12
Hi b. p.
5
Sets the high balance point (the
outside air temperature at which the
auxiliary heat is not used).
Default:
90.0°F/32.0°C
Note:
Above the high balance
point, only the heat pump is used to
maintain the heating setpoint. If no
outside air temperature sensor is
connected to Terminal OS, auxiliary
heat pump operation may still be
used above the high balance point.
Range:
34.0°F/1.0°C
to
90.0°F/32.0°C
Lo b. p.
5
Sets the low balance point (the
outside air temperature at which the
heat pump operation terminates
when the heat pump is in the
heating mode).
Default:
-12.0°F/-24.0°C
Note:
Below the low balance
point, only the auxiliary heat is used
to maintain the heating setpoint.
Heat pump operation may still be
used below the low balance point if
no outside air temperature sensor is
connected to Terminal OS.
Range:
-40.0°F/-40.0°C
to
30.0°F/-1.0°C
Comf/eco
Selects how the auxiliary heat is
used.
Default:
comfort
Note:
Selecting economy in the
heating mode adds a deadband
between the heat pump and
auxiliary heat. The actual
temperature maintained is lower
than the true heating setpoint to
maximize the heat pump operation.
When the outside air temperature
drops below the low balance point,
the deadband is eliminated.
(economy):
In the heating mode. If the heat pump is not able to
satisfy the heating setpoint, the auxiliary heat is energized to satisfy
the setpoint only when the temperature drops 2F°/1C° below the
heating setpoint.
(economy):
In the emergency heat mode. The setpoint that is
maintained is the heating setpoint.
(comfort):
In the heating mode. If the heat pump is not able to
satisfy the heating setpoint, the auxiliary heat is energized to satisfy
the setpoint.
Re valve
Governs the reversing valve
operation.
Default:
O
(B):
Energizes the valve in heating operation (valve is normally
cool).
(O):
Energizes the valve in cooling operation (Valve is normally
heat).
Table 2: Installer Configuration Menu (Part 6 of 7)
Parameter
Appearing
on Display
Description and Default
Selection Options
