Prostat OEM Series User guide

Installer Manual
Non-Programmable Thermostats
PSP1100 Up to 1-heat / 1-cool
PSP2100 Heat Pump, Up to 2-heat / 1-cool
1 Specifications 2 Safety Warnings 3 About Your Thermostat
4 Preparation & Installation 5 Sample Wiring & Jumpers
6 Test Operations 7 Troubleshooting 8 Warranty
Follow Installation Instructions carefully. Disconnect Power to the
Heater/Air Conditioner before removing the old thermostat and
installing the new thermostat.
CAUTION
WARNING
1 Specifications
model PSP1100
• Manual-changeover
• 1 heat, 1 cool
• Non-programmable
• Compatible with gas/elec, millivolt, and heat pump systems with no aux heat
• Battery or 24vac system powered
model PSP2100
• Manual-changeover
• 2 heat, 1 cool
• Non-programmable
• Compatible with heat pumps with 2nd stage aux heat
• Battery or 24vac system powered
© Copyright 2021, All Rights Reserved

3 Installer Guide
Table of Contents
2 Safety Warnings
Safety Warnings............................................................4
3 About Your Thermostat
Front Panel ...................................................................5
Display ......................................................................6
Normal Operation..........................................................7
Fahrenheit or Celsius ....................................................8
Aux Heat.......................................................................9
4 Preparation and Installation
Remove Old Thermostat..............................................10
Battery Replacement ..................................................11
Wire Connections........................................................12
Thermal Insulating Sheet ............................................13
5 Sample Wiring Diagrams
Sample Wiring Diagrams for PSP1100 ........................14
Sample Wiring Diagrams for PSP2100 ........................16
Jumper Configuration .................................................17
6 Test Operation ......................................................18
7 Troubleshooting ...................................................20
8 Warranty ...............................................................21

Installer Guide 4
The two Alkaline “AA” batteries must be replaced at least once every 12
months to ensure proper operation. The Low Battery icon will appear on the
display when it is time to replace the batteries. If the thermostat is connected
to 24v power, the batteries should still be installed, but are not required.
When “Low Battery” is displayed the batteries must be replaced immediately.
The manufacturer cannot be liable for improper operation of the thermostat if
the batteries are not immediately replaced.
Annual battery replacement is especially critical in locations subject to
freezing temperatures. The thermostat will be unable to turn on the heating
system if the batteries are exhausted.
This device complies with Part 15 of the FCC rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired
operation.
Follow Installation Instructions carefully.
DISCONNECT POWER TOTHE
HEATER - AIR CONDITIONER
BEFORE REMOVING THE OLD
THERMOSTAT AND INSTALLING
THE NEW THERMOSTAT.
2 Safety Warnings

5 Installer Guide
3 About Your Thermostat
1Front Panel
COOLER &
WARMER
BUTTONS
DISPLAY
HEAT
BATTERIES
COOL
OFF
FAN
HEAT
AUTO
ON
On or Auto
FAN SWITCH
BI-COLOR LED
Heat or Cool demand
indicator when system
powered: Red = Heat
Green = Cool
MODE SWITCH
Cool, Off, or Heat
BATTERY
DOOR
AUX HEAT
NORM
EMRGC’Y LOCKOUT
(AUX HEAT
on PSP2100
model only)

Installer Guide 6
Display
1Heat and Cool indicators. In normal operation, Heat or Cool
appears, depending on the Mode Switch position. When heat or
cool is energized, the Heat or Cool indicator will flash.
2Current room temperature.
3Desired set temperature indicator.
When this indicator is on, the large numbers represent the
desired room temperature. Pressing the COOLER or WARMER
button during normal operation will cause the large numbers
to switch from the current room temperature to the desired set
temperature.
4Indicates battery life is low; it is recommended to replace the
batteries at this time.
5Indicates auxiliary heat is energized. (PSP2100 only)
SET TEMP
LOW
BATTERY
HEAT
AUX
COOL 88

7 Installer Guide
1Select Cool or Heat with the Mode Switch.
2Normally leave the fan switched to Auto.
In Fan Auto, the fan will turn on only with a heat or cool demand.
When Fan On is selected, the fan will run continuously.
3Adjust the desired set temperature with the
COOLER and WARMER buttons.
Operation
2Normal Operation
COOLER &
WARMER
BUTTONS
HEAT
BATTERIES
COOL
OFF
FAN
HEAT
AUTO
ON
On or Auto
FAN SWITCH
MODE SWITCH
Cool, Off, or Heat
AUX HEAT
NORM
EMRGC’Y LOCKOUT

Installer Guide 8
COOLER & WARMER
BUTTONS
HEAT
BATTERIES
COOL
OFF
FAN
HEAT
AUTO
ON
MODE SWITCH
Cool, Off, or Heat
AUX HEAT
NORM
EMRGC’Y LOCKOUT
1Select Off with the Mode Switch.
2Press and hold the COOLER and WARMER buttons at the same
time until the temperature is displayed in degrees Celsius.
3Repeat this process to display the temperature in degrees
Fahrenheit.
Operation
3Fahrenheit or Celsius

9 Installer Guide
4Aux Heat (PSP2100 only)
HEAT
BATTERIES
COOL
OFF
FAN
HEAT
AUTO
ON
AUX HEA
T
SWITCH
AUX HEAT
NORM
EMRGC’Y LOCKOUT
Emergency - Disables all compressor functions* and energizes only
Aux Heat to satisfy the heat demand.
Normal - Aux Heat is allowed to run, if necessary, along with the heat
pump to satisfy the heat demand.
Lockout - Aux Heat will never turn on regardless of the heat demand.
*When the Aux Heat switch is in the Emergency position the
compressor will also be locked out during cooling operation.

Installer Guide 10
• Proper installation of the thermostat will be accomplished by following
these step by step instructions. If you are unsure about any of these steps,
call a qualified technician for assistance.
• These tools will be required:
• Make sure your Heater/Air Conditioner (Heat Pump for PSP2100) is working
properly before beginning installation of the thermostat.
• Carefully unpack the thermostat. Save the screws and instructions.
• Turn off the power to the Heating/Air Conditioning (or Heat Pump for
PSP2100) system at the main fuse panel. Most residential systems have a
separate breaker for disconnecting power to the furnace.
Flat Blade
Screwdriver
Wire Cutter
& Stripper
4 Preparation and Installation
Remove & Replace Old Thermostat
• Remove the cover of the old thermostat. If it does not come off easily check
for screws.
• Loosen the screws holding the thermostat base or subbase to the wall, and
lift away.
• Disconnect the wires from the old thermostat. Tape the ends of the wires as
you disconnect them, and mark them with the letter of the terminal for easy
reconnection to the new thermostat.
• Keep the old thermostat for reference purposes, until your new thermostat
is functioning properly.

11 Installer Guide
Battery Replacement
FIG. 1
FIG. 2
Swing
down
FIG. 4
Snap closed
Push
up
FIG. 3
Old
batteries
out
New batteries in
AA Alkaline
FIG. 1
Battery
Door
Pull out
BATTERIES
COOL OFF HEAT
HEAT
The batteries are easily accessible from the battery door located on the bottom front
of the thermostat (fig. 1). To open the battery slot, pull out on the battery door (fig. 1)
and swing down (fig. 2).
Remove the old batteries
and replace with the new AA
alkaline batteries (fig. 3).
Push up on the battery door and
snap closed (fig. 4).
The batteries must be replaced immediately when the thermostat
displays LOW BATTERY in the lower left corner of the display.

Installer Guide 12
Wire Connections PSP1100
Wire Connections PSP2100
If the terminal designations on your old thermostat do not match those on the
new thermostat, refer to the chart below or the wiring diagrams that follow.
Wire from the Install on the
old thermostat Function new thermostat
terminal marked connector marked
C Common C (optional)
R, M, Vr, A Power RH*
(Heating Transformer)
Y1 or Y Cooling Y
W1, W or H Heating W
G or F Fan G
RC, R, M, Vr, A Power RC*
(Cooling Transformer)
O/B Rev. Valve O/B
Wire from the Install on the
old thermostat Function new thermostat
terminal marked connector marked
C Common C (optional)
Rc, R, M, Vr, A Power R
Y1 or Y Cooling Y
W1, W or H Auxiliary Heat W
G or F Fan G
B Reverse Valve B
(Energize to Heat)
O Reverse Valve O
(Energize to Cool)
* The RC and RH terminals have a factory installed jumper to control single transformer systems.
Remove this jumper to control dual transformer systems.

13 Installer Guide
Thermal Insulating Sheet
A label is provided on the backplate that
prevents drafts originating inside the wall
from entering the thermostat.
These drafts, left unchecked, may cause
incorrect room temperature readings.
Please do not remove this label from
the thermostat. Insert the wires
through the slots provided in
the label as shown in Fig. 1.
Wire
Slots
CO/B YWGRCRH
4Z95
MODEL: PSP1100
97061606
MADE IN CHINA
USE SIZE “AA”
ALKALINE BATTERIES
FIG. 1

Installer Guide 14
5 Sample Wiring Diagrams
Sample Wiring Diagrams PSP1100
Conventional Heating and Cooling Systems and
Heat Pump Systems with no Aux Heat
4 Wire, 1 Stage Cool, 1 Stage Heat
Residential Gas or Electric Heat, Electric
Cool, split systems & package units
Y COMPRESSOR
W GAS OR ELECTRIC HEAT
G FAN
R POWER
J1 = GAS
J2 = GAS/ELEC
J3 = not used
4 Wire, 1 Stage Cool, 1 Stage Heat
Heat Pump with B reversing valve
Residential Heat Pumps, split systems &
package units, with no auxiliary heat
Y COMPRESSOR
G FAN
R POWER
B REVERSING VALVE
J1 = ELEC
J2 = HP
J3 = B
4 Wire, 1 Stage Cool, 1 Stage Heat
Heat Pump with O reversing valve
Residential Heat Pumps, split systems &
package units, with no auxiliary heat
Y COMPRESSOR
G FAN
R POWER
O REVERSING VALVE
J1 = ELEC
J2 = HP
J3 = O
3 Wire, 1 Stage Heat
Residential Gas or Electric Heat units
with a separately controlled fan
W GAS OR ELECTRIC HEAT
G FAN
R POWER
J1 = GAS (for gas heat)
or
J1 = ELEC (for electric heat)
J2 = GAS/ELEC
J3 = not used

15 Installer Guide
2 Wire, 1 Stage Gas Heat
Residential Gas or Millivolt units
W GAS OR ELECTRIC HEAT
R POWER
J1= not used
J2 = GAS/ELEC
J3 = not used
Dual Transformer 5 Wire, 1 Stage Cool,
1 Stage Heat
Residential Gas or Electric Heat, Electric
Cool, split systems & package units
HEATING SYSTEM
RH* POWER HEAT
W GAS OR ELECTRIC HEAT
G FAN
COOLING SYSTEM
Y COMPRESSOR
RC* POWER COOL
J1 = GAS (for gas heat)
or
J1 = ELEC (for electric heat)
J2 = GAS/ELEC
J3 = not used
*Remove the factory installed jumper
between RC and RH
Sample Wiring Diagrams PSP1100
Conventional Heating and Cooling Systems and
Heat Pump Systems with no Aux Heat

Installer Guide 16
Sample Wiring Diagrams PSP2100
Heat Pump Systems
4 Wire, 1 Stage Cool, 1 Stage Heat
Heat Pump with O reversing valve
Residential Heat Pumps, split systems &
package units, with no auxiliary heat
R POWER
Y COMPRESSOR
G FAN
O REVERSING VALVE
5 Wire, 1 Stage Cool, 1 Stage Heat
Heat Pump with O reversing valve
and Auxiliary Heat
Residential Heat Pumps, split systems &
package units, with auxiliary heat
R POWER
Y COMPRESSOR
W AUXILIARY HEAT
G FAN
O REVERSING VALVE
4 Wire, 1 Stage Cool, 1 Stage Heat
Heat Pump with B reversing valve
Residential Heat Pumps, split systems &
package units, with no auxiliary heat
R POWER
Y COMPRESSOR
G FAN
B REVERSING VALVE
5 Wire, 1 Stage Cool, 2 Stage Heat
Heat Pump with B reversing valve
and Auxiliary Heat
Residential Heat Pumps, split systems &
package units, with auxiliary heat
R POWER
Y COMPRESSOR
W AUXILIARY HEAT
G FAN
B REVERSING VALVE

17 Installer Guide
1000 JFK SKD
1000 JFK
SKD
471
471
471
471
471
471
471 471
471
471
471
471
471 471
471
471
471
471
471
471
ASDF
NNEACPJAP4S220-5N83D4
471 471 471 471
471
471
471
471
471
471
471
471
ASDF
ASDF
471
ASDF
J1 J2 J3
GAS
ELEC
GAS/ELEC
HP
O
B
J1 J2 J3
GAS
ELEC
GAS/ELEC
HP
O
B
OR J1
GAS
ELEC
J1
GAS
ELEC
OR J3
O
B
J3
O
B
OR
J2
GAS/ELEC
HP
J2
GAS/ELEC
HP
Check Jumpers (ONLY for PSP1100)
Ensure which jumper is correct for your system.
Jumpers are located on the back of the thermostat.
J1 = GAS the thermostat will not energize the Fan (G)
terminal in heating.
J1 = ELEC the thermostat will energize the fan in
heating.
J2 = GAS/ELEC the thermostat is configured for a
conventional gas/electric system
J2 = HP the thermostat is configured for a heat pump
system.
Heat Pump Systems Only (J2 = HP)
J3 = O reversing valve terminal O/B will energize
in cooling
J3 = B reversing valve terminal O/B will energize
in heating

Installer Guide 18
• Turn on the power to the Heating/Air Conditioning (or Heat Pump for
PSP2100) system.
• On the thermostat, slide the Mode Switch to HEAT. Press the COOLER
or WARMER button until the set temperature is 10 degrees above room
temperature. The HVAC unit should energize in the heating mode (Page
6). Note: You may need to wait up to ve minutes for heating to
energize due to the compressor lockout feature. There is a two minute
minimum run-time for rst stage heating.
• On the thermostat, slide the Mode Switch to COOL. Press the COOLER
or WARMER buttons until the set temperature is 10 degrees below room
temperature. The HVAC unit should energize in the cooling mode (Page 6).
Note: You may need to wait up to ve minutes for cooling to energize
due to the compressor lockout feature.
• Keep the old thermostat for reference purposes, until your new thermostat
is functioning properly.
• On the thermostat, slide the Mode Switch to OFF. Slide the Fan Switch to
Fan On. The fan should turn on and run continuously (Page 6).
6 Test Operation

19 Installer Guide
Heat or Cool
Setpoint
Deadband Deadband
db 1db 2
1st Stage
turn on
2nd Stage
turn on
Heating
(non-adj. 2˚)
Deadband
db 1
1st Stag
e
turn on
Cooling
(non-adj. 1˚) (non-adj. 1˚)
For the PSP2100
• TWO STAGE OPERATION - The 2nd stage of heat (auxiliary heat) is turned
on when the room temperature is equal to or less than: the setpoint minus
the 1st stage deadband (one degree, non-adjustable), minus the 2nd stage
deadband (two degrees, non-adjustable).
• On the thermostat, slide the Aux Heat Switch to the NORMAL position.
Press the COOLER or WARMER button until the set temperature is 10 degrees
above room temperature. The Aux Heat icon will appear indicating that the
thermostat has energized Aux Heat (page 8).

Installer Guide 20
• SYMPTOM: The slide switches on the thermostat are very difficult to move.
CAUSE: The backplate of the thermostat is screwed too tightly into
a wall that is not perfectly flat.
REMEDY: Loosen the screws holding the thermostat into the wall.
• SYMPTOM: The Air Conditioning does not attempt to turn on.
CAUSE: The cooling setpoint is set too high, the Mode Switch is not
set for Cool, or the batteries are too weak.
REMEDY: Consult the Normal Operation section in this manual to:
- Lower the cooling setpoint (Page 6).
- Correct the Mode Switch position (Page 6).
- Replace the batteries (Page 10).
- Adjust the Aux Switch to Normal (page 8) for PSP2100 ONLY.
• SYMPTOM: The fan does not turn on even though the compressor
has energized.
CAUSE: The Fan Switch is not completely in the On or Auto position.
REMEDY: Slide the Fan Switch firmly into the On or Auto position.
• SYMPTOM: Aux Heat does not turn on (PSP2100 only).
CAUSE: The Aux Heat Switch is set for Lockout.
REMEDY: Consult the Aux Heat section of this manual to slide the
Aux Heat Switch to Normal (Page 8).
• SYMPTOM: The Heating does not attempt to turn on.
CAUSE: The heating setpoint is set too high, the Mode Switch is not set for
Heat, or the batteries are too weak.
REMEDY: Consult the Normal Operation section in this manual to:
- Raise the heating setpoint (Page 6).
- Correct the Mode Switch position (Page 6).
- Replace the batteries (Page 10).
7 Troubleshooting