Carrier TP-NHP - Manual (Page 38)

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2 — Thermostat will control the W1 and O/W2/B outputs.
Default is 1.
Option 33 — Single or Two−Piece Installation
This configuration allows the thermostat to compensate for the amount of heat
generated by the thermostat electronics to allow more accurate sensing of the
temperature sensor. The amount of heat compensation will be different between
single installation and two−piece installation.
Range: 1P or 2P
1P — The installation is single piece.
2P — The installation is two separate pieces.
Default is 2P.
Option 41 — Variable Speed Blower
This selection allows the installer to select between a single speed or variable
motor.
Off − The system has a single speed (PSC) blower.
On − The system has a variable speed blower.
Factory default is OF (Off)
Option 44 — Super Comfort Heat
This option is only available on heat pump units HP (HP, H2) when Option 41
(Variable Speed Blower) is set to On and the system has a valid OAT sensor.
OF (Off) − Comfort Heat is off
On − Comfort Heat feature is on.
If the outdoor air temperature is between 12 to 40
_F (−11 to 4_C) and the
compressor is running in heating, then the fan output is turned off. This will
signal the variable speed blower to reduce the air speed. The fan output is turned