Amana PHWTA150H User Manual
AMANA PHWT-A150H THERMOSTAT
3) SAFETY INFORMATION
• This thermostat is for LOW voltage applications only.
• Turn OFF electricity to all heating and cooling
components.
• All wiring must conform to applicable local
and national building and electrical codes and
ordinances.
4) TO REMOVE EXISTING THERMOSTAT
1. Write down the letters printed near each wire
terminal that is used, and the color of each wire it
is connected to; self-adhesive wire labels are also
enclosed.
2. Carefully remove wires from existing thermostat
and bend so they cannot fall back into wall or
touch each other.
3. Remove existing thermostat base from the wall.
1) DESCRIPTION AND COMPATIBILITY
The Amana PHWT-A150H is a non-programmable
electronic thermostat, which can be used with the
following heating/cooling applications:
• Cooling/ Conventional PTAC Units (PTC) with or
without Electric Heat
• Heat Pump PTAC Units (PTH or HEH) with or
without Electric Heat
2) SPECIFICATIONS
• Input Voltage: 19 to 30 VAC
• Output Rating: Max. 1.5A per terminal (3A total)
• Temperature Control: 45°F to 90°F (7°C to 32°C)
• Temperature Accuracy: ± 1°F (± 0.5°C)
• Wire Terminals:
C 24 VAC Common
GL Fan LOW Speed
GH Fan HIGH Speed
W2 2nd Stage or Auxiliary Heating Signal
W1 1st Stage Heating Signal
Y Cooling Signal
R 24 VAC Hot
B/O Reversing Valve
5) TO INSTALL NEW THERMOSTAT
1. Mount the thermostat on an inside wall about
five feet above the floor in an area that has good
circulation, but is not directly aected by a vent
or duct.
2. If painting or construction is still ongoing, cover
the thermostat completely or wait until work is
complete before mounting thermostat.
3. If new mounting holes are needed, mark the
placement of the new mounting holes through
the thermostat base. Using a 3/16” drill bit,
drill the holes you have marked and insert the
supplied wall anchors.
4. Feed the wires through the wire opening in the
base and use supplied screws to mount base to
the wall.
5. Using Section 7) WIRING DIAGRAMS, wire each
terminal on the new thermostat base. Ensure that
the bare end is fully seated into the connector,
then tighten securely. Pull gently on wires to
ensure they are secure.
6. Place thermostat front back onto the base.
7. Restore power back to heating and cooling
components and thermostat.
8. See Section 8) INSTALLER SETTINGS MENU, to
adjust the required settings needed for each
system type.
53611-1
6) FRONT PANEL CONTROLS
THERMOSTAT SYSTEM MODE SWITCH POSITIONS:
HEAT position
THERMOSTAT BUTTONS:
OFF position
COOL position
HEAT = thermostat permits heating operation
OFF = thermostat stops all heating or cooling functions
COOL = thermostat permits cooling operation
THERMOSTAT FAN SWITCH POSITIONS:
AUTO position
LOW position
HIGH position
AUTO position = fan operates in low speed mode as
needed during a call for heating or cooling activation
only.
LOW position = fan operates continuously in LOW
speed, with the heating or cooling components cycling
on and o in the background as needed.
HIGH position = fan operates continuously in HIGH
speed, with the heating or cooling components cycling
on and o in the background as needed.
UP button
DOWN button
UP / DOWN = used for raising or lowering the target set
temperature and selecting user options and settings in
the display screen.
The temperature that is shown at all times in normal
operation is the Target Set Temperature.
To view current ambient room temperature while in
Heat or Cool mode, perform a single press of BOTH the
Up and Down buttons at the same time.
Note: to adjust the target set temperature, first ensure
that the thermostat is in either Heat or Cool mode, and
press either the up or down buttons until the desired
target temperature is reached. Presses to the Up or
Down buttons will have no eect when the thermostat is
in O mode.
SETTING A KEYPAD / FRONT PANEL LOCKOUT:
• While in either HEAT or COOL mode, a keypad
lockout can be introduced which will prevent any
temperature adjustment from being made by
the user. Even while locked, any button press will
illuminate the display backlight.
• To activate (and deactivate) the keypad lockout,
press and hold BOTH the Up and Down buttons for
at least 5 seconds. When the keypad is locked, a
padlock will appear in the lower le corner of the
display.
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