7) WIRING DIAGRAMS
•
HP/CON Option
= “HP” position (default) is for heat
pumps, and bridges Y and W1 terminals together.
When set to “CON” the Y and W1 terminals operate
independently for conventional systems.
•
B/O Option
= “B” setting (default) means the shared
B/O terminal is energized while in Heat mode and off
in Cool. “O” setting means the shared B/O terminal is
energized while in Cool mode and off in Heat.
B (top two)
O (lower two)
HP (right two)
CON (left two)
Back of thermostat circuit board
HP (right two)
CON (left two)
Back of thermostat circuit board
For Heat Pump applications, the options below can be
left per the factory defaults.
For Conventional (cooling) applications, the option
below will need to be adjusted or confirmed during the
install.
B/O
R
Y
W1
W2
GH
GL
C
HP Reversing Valve
Heat Pump Compressor
Blower Fan (High Speed)
Blower Fan (Low Speed)
AMANA PHWT-A150H
THERMOSTAT
24V Power
Auxiliary/Emerg Heat
*see note 2
*see note 3
24V Common
NOT USED *
* note 1: WHEN USED FOR
HEAT PUMP, THE Y & W1
TERMINALS ACT AS ONE
B/O
R
Y
W1
W2
GH
GL
C
NOT USED
NOT USED
A/C Cooling
Blower Fan (High Speed)
Blower Fan (Low Speed)
AMANA PHWT-A150H
THERMOSTAT
24V Power
Hea�ng Stage-1
24V Common
**see note 2
**see note 3
UP TO 2H/1C HEAT PUMP APPLICATIONS:
(AMANA PTH & HEH PTAC MODELS):
UP TO 1H/1C CONVENTIONAL APPLICATIONS:
(AMANA PTC PTAC MODELS) **see note 1
* HEAT PUMP WIRING DIAGRAM NOTES:
• Note 2: The “W2” terminal is used to call for Electric/
Auxiliary heat. If your Heat Pump PTAC does not have
Electric heat, then the “W2” terminal should not
be used and Installer Settings menu 10 (Aux. Stage
Offset) should be set to “OFF”.
• Note 3: For PTAC units with only one fan speed
(single “G” fan wire), add a jumper wire (installer
provided) to bridge together “GH” and “GL”. Connect
your fan wire to either terminal after jumper wire has
been added.
** CONVENTIONAL WIRING DIAGRAM NOTES:
• Note 1: For Conventional (cooling) PTAC units,
Installer Settings menu 06 (System Type) must be set
to “Con”.
• Note 2: If connecting to a Conventional PTAC unit
without electric heat, the W1 and W2 wire terminals
will not be used and Installer Settings menu 03
(Available Modes) should be set to “04: Cool Only”
• Note 3: For PTAC units with only one fan speed
(single “G” fan wire), add a jumper wire (installer
provided) to bridge together “GH” and “GL”. Connect
your fan wire to either terminal after jumper wire has
been added.
