Amana PHWTA150H User Manual

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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 aected 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.

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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 eect 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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7) WIRING DIAGRAMS

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

B/O

AMANA PHWT-A150H THERMOSTAT

* HEAT PUMP WIRING DIAGRAM NOTES:

• Note 1: For Heat Pump applications the jumper wire must be connected between W1 and Y.

• 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 Oset) 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 aer jumper wire has been added.

For Heat Pump applications, the option below can be le per the factory default.

HP Reversing Valve

24V Power

Heat Pump Compressor

*see note 1

Auxiliary/Emerg Heat

*see note 2

NOT USED

Blower Fan (High Speed)

*see note 3

Blower Fan (Low Speed)

24V Common

B/O

AMANA PHWT-A150H THERMOSTAT

** CONVENTIONAL WIRING DIAGRAM NOTES:

• Note 1: For Conventional (cooling) PTAC units, the jumper wire between Y & W1 should be removed and 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”

NOT USED

24V Power

A/C Cooling

NOT USED

**see note 1

Hea�ng Stage-1

**see note 2

Blower Fan (High Speed)

**see note 3

Blower Fan (Low Speed)

24V Common

Back of thermostat circuit board

B (top two)

O (lower two)

• B/O Option = “B” setting (default) means the shared

B/O terminal is energized while in Heat mode and o in Cool. “O” setting means the shared B/O terminal is energized while in Cool mode and o in Heat.

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8) INSTALLER SETTINGS

MENU# SETTING OPTIONS

01 Scale F, C

02 Temp. Calibration Zero, -5F to +5F

(-3C to +3C)

04 Max. Heat 60F to 90F (80F)

(16C to 32C)

05 Min. Cool 60F to 80F (65F)

(7C to 24C)

06 System Type HP=Heat Pump

Con=Conventional

09 Swing /

Temp. Dierential

10 Aux. Stage Oset

(for Heat Pumps only)O1: 1.0F (0.5C)

17 Backlight Always On O=Turn o 10 sec

18 Use default set temp.

aer mode change

19 Default heat mode set

temp.

20 Default cool mode set

temp

98 Compressor

Protection Bypass

99 RESET No=Save and Exit

±0.25F (±0.14C)

±0.50F (±0.28C)

±1.00F (±0.56C) ±2.25F (±1.25C)

2: 2.0F (1.0C) 3: 3.0F (1.5C)

4: 4.0F (2.0C)

5: 5.0F (2.5C)

On=Always On

ON: Uses default temps

OFF: Use last temp per mode

70F (21C)

60F to max heat set temp

74F (23C)

60F to max set temp

No=Delays Remain Yes=Suspend Delay

Yes=Full Reset

17 (Backlight Always On): Allows the display backlight

to remain on constantly, or turn o automatically aer 10 seconds.

18 (Set Temp Aer Mode Change): Determines if the

thermostat recalls the last used set temperature per mode, or uses a default set temperature when the mode is changed manually.

19 (Default Heat Mode Set Temp): Determines the default

set temperature that is used when first selecting heat mode.

20 (Default Cool Mode Set Temp): Determines the default

set temperature that is used when first selecting cool mode.

98 (Delay Bypass): Contractor/Installer mode, turns o

the compressor delays for testing the system; returns automatically to normal operation aer 10 minutes.

(RESET): Returns all settings back to factory defaults.

TO ENTER SETTINGS MENU:

With thermostat powered, move System Mode switch to the OFF position. Press and hold BOTH Up and Down buttons for at least 5 seconds, until the screen changes.

TO CHANGE AN ENTRY:

Use the Up or Down buttons to change the setting option.

TO ADVANCE TO THE NEXT MENU ITEM:

Press BOTH the Up and Down buttons together.

SETTING DESCRIPTIONS:

01 (Scale): Displayed temperatures shown in F/C

degrees.

(Temp. Calibration): Gives user flexibility to adjust

the perceived measured temperature that is used for thermal control

04 (Max. Heat): Sets the maximum temperature that a

user can adjust the target temperature to for heating.

05 (Min. Cool): Sets the minimum temperature that a

user can adjust the target temperature to for cooling.

06 (System Type): Selects the type of heating/cooling

equipment that is present in the system.

09 (Swing / Temp. Dierential): Determines how wide

or narrow the temperature control band is between cut-in and cut-out.

10 (Aux.Stage Oset): Sets the number of degrees from

the setpoint, that will cause the second heat stage to turn on.

TO RETURN TO THE MAIN THERMOSTAT SCREEN:

Press BOTH the Up and Down buttons together aer last menu item exits the settings menu.

Waiting 1-Minute with no button presses will exit the settings menu with all items saved as they were last shown on the display screen.

Amana PHWTA150H User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual