Carrier PTACSTAT-NP-HP - Manual (Page 4)

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signifies a hazard which could result in personal injury or death. CAUTION is
used to identify unsafe practices which may result in minor personal injury or
product and property damage. NOTE is used to highlight suggestions which will
result in enhanced installation, reliability, or operation.
INTRODUCTION
Carrier’s PTAC Comfortt Series non--programmable thermostat is a
wall--mounted, low--voltage thermostat which maintains room temperature by
controlling the operation of a heating and/or air conditioning system. Both heat
pump and air conditioner models are available. A variety of features are provided
including battery operation, memory in case of power interruption, separate
heating and cooling setpoints, backlighting, and built--in installer test.
This Installation Instruction guide and owners manual covers installation,
configuration, start up and operation of the PTAC specific Comfort Series line of
thermostats.
INSTALLATION CONSIDERATIONS
Models
There are two models for the PTAC Comfort Series non--programmable thermostat,
AC and HP versions. The model PTACSTAT--NP--HC--x is designed for AC
systems, controlling one stage of cooling and one stage of heating. It will not operate
a heat pump. Model PTACSTAT--NP--HP--x is designed for HP systems, controlling
one stage of cooling and two stages of heating. The HP thermostat model can be
converted to an AC unit. Select the appropriate model for the intended application.
Power
All Comfort Series models are dual powered. They can operate from batteries
(optional) or 24VAC power. Operation from 24VAC is preferred, if available.