Prostat OEM Series Instruction Manual

User & Installer
Manual
Residential TouchScreen Programmable Thermostats
PSP4272RT Up to 4-heat / 2-cool
PSP4273RT Up to 4-heat / 2-cool with Humidity Control
1 Specifications 2 Glossary of Terms 3 About Your Thermostat
4 Quick Start 5 Main Menu Buttons 6 Installation Instructions
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 PSP4272RT
• Up to 4 Heat & 2 Cool Stages
• Gas Electric or Heat Pump Control
• Dual Fuel Capable
• Simple as you want Operation
• Switchable Programmable or
Non-Programmable
• Adjustable Timers & Deadbands
• Setpoint Limiting
• Accepts Remote Sensor or Outdoor Sensor
• Choice of English, Spanish or French
• Customizable Screensaver & Wallpaper
• CA Title 24 Compliant
• Wi-Fi Built In Free mobile apps available
• OEM-branded Equipment Badges Included
© Copyright 2021, All Rights Reserved
model PSP4273RT
• Up to 4 Heat & 2 Cool Stages
• Gas Electric or Heat Pump Control
• Dual Fuel Capable
• Switchable Programmable or Non-
Programmable
• Adjustable Timers & Deadbands
• Setpoint Limiting
• Equipped with Humidity Sensor: Controls
Humidification & Dehumidification
• Accepts Remote Sensor or Outdoor Sensor
• Choice of English, Spanish, or French
• Customizable Screensaver & Wallpaper
• CA Title 24 Compliant
• Wi-Fi Built In Free mobile apps available
• OEM-branded Equipment Badges Included

3 Get To Know Your Thermostat
Home Screen................................................................1
Menu Screens ..............................................................1
Dropdown Dashboard ...................................................2
Care and Use of Your Thermostat ..................................5
4 Quick Start
Selecting Your Desired Temperature and Mode..............6
Using the Fan Button.....................................................6
Setting the Time & Date ................................................7
Setting the Time ...........................................................8
Setting the Date............................................................9
Daylight Savings Setup .................................................9
Connecting to Wi-Fi.....................................................10
Wi-Fi Set up - Create a Skyport Account .....................12
5 Main Menu Buttons
SCHEDULE..................................................................13
View My Schedule ......................................................14
Edit My Schedule........................................................14
SMART FAN ................................................................16
Smart Fan On/Off........................................................17
Smart Fan Minimum Runtime .....................................17
Start/Stop Times.........................................................17
Days to Allow Smart Fan Operation .............................17
Screensaver ..............................................................18
Screensaver On/Off.....................................................19
Screensaver Setup......................................................19
Screensaver Preview ..................................................19
Table of Contents

Alerts.........................................................................20
View Current Alerts .....................................................21
Reset Alerts ................................................................21
Set/Edit Reminders .....................................................21
Service Information (Who To Call For Service)..............21
Display ......................................................................22
Active Brightness........................................................23
Idle Brightness............................................................23
Night Dimmer .............................................................23
Maintenance...............................................................24
Preferences...............................................................25
User Interface Themes................................................26
Custom Wallpaper.......................................................26
Heat/Cool Indicator .....................................................26
Sound Options ............................................................26
Humidity....................................................................27
Humidification Settings...............................................28
Dehumidification Settings ...........................................28
Vacation/Away..........................................................29
Clear Vacation Schedule .............................................30
Set Vacation Schedule ................................................30
Schedule ....................................................................31
Modes & Setpoints......................................................31
Security.....................................................................32
Auto Screenlock..........................................................33
Setpoint Limits............................................................33
Information ...............................................................34
View Runtime Graphs..................................................35
Who to Call for Service................................................35

Settings.....................................................................36
Thermostat Name.......................................................40
Available Modes .........................................................40
SD Card (Import and Export)........................................40
General Setup ...........................................................40
Units (F or C)...............................................................40
Language ...................................................................41
Smart Recovery On/Off ...............................................41
Simple Thermostat On/Off...........................................41
AUTOMATED DEMAND RESPONSE ..............................42
Installation Settings .................................................56
Heat & Cool Stages.....................................................56
Heat & Cool Stages.................................................56
Compressor Stages.................................................56
Aux Heat Stages .....................................................56
Timers & Deadbands ..................................................57
Free Cooling ...............................................................58
Heat Pump Settings ....................................................59
Heat Pump Lockout - Enabled/Disabled ......................59
Heat Pump Lockout Outdoor Temp..............................59
Aux Heat Lockout Enabled/Disabled............................59
Aux Heat Lockout Temp ..............................................59
Dual Fuel Settings.......................................................59
Dual Fuel On/Off .........................................................59
Changeover With Outdoor Temp On/Off .......................59
Adjust Balance Point...................................................59
AUX Output Settings....................................................60
Fan Off Delay..............................................................61
Sensor Settings ..........................................................61
Control Sensor............................................................61
Wired Sensor..............................................................62

Wired Sensor Use .......................................................61
Calibrate Sensors........................................................62
Test Outputs ...............................................................62
Dealer Information ......................................................63
Upgrade Firmware ......................................................63
Delete Custom Images................................................63
Reset to Factory Default Settings ................................63
Restart Thermostat .....................................................63
Wi-Fi ..........................................................................64
Enabled ......................................................................65
Status.........................................................................65
Setup..........................................................................65
Local API.....................................................................65
SKYPORT ....................................................................69
Account ......................................................................69
Emergency Heat........................................................70
6 Installation Instructions
Remove & Replace the Old Thermostat .......................71
Wire Connections........................................................72
Determining Your Existing Wiring and Equipment.........73
Making 4 Wires Work When 5 Wires Are Required .......75
Making 5 Wires Work When 6 Wires Are Required .......76
The TouchScreen Thermostat Backplate......................77
Explanation of the Thermostat Dip Switches................78
Sample Wiring Diagrams.............................................79
7 Troubleshooting .....................................................84
8 Warranty.................................................................85

Manual & Installer Guide 6
FCC Compliance Statement
This equipment has been tested and found to comply with the limits for an intentional
radiator, pursuant to Part 15, subpart C of the FCC rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference in radio communications.
However, there is no guarantee that the interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can
be determined by turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that of the receiver.
• Consult the dealer or an experienced radio or TV technician for help.
Notice: Only peripherals complying with FCC limits may be attached to this equipment.
Operation with noncompliant peripherals or peripherals not recommended by ProStat+, is
likely to result in interference to radio and TV reception. Changes or modifications to the
product, not expressly approved by ProStat+ could void the user’s authority to operate the
equipment.
FCC - INDOOR Mobile Radio Information:
To comply with FCC/IC RF exposure limits for general population / uncontrolled exposure, the
antenna(s) used for this transmitter must be installed to provide a separation distance of at
least 20 cm from all persons and must not be co-located or operating in conjunction with any
other antenna or transmitter.
This Device complies with Industry Canada License-exempt RSS standard(s). Operation is
subject to the following two conditions: 1) this device may not cause interference, and 2)
this device must accept any interference, including interference that may cause undesired
operation of the device.
Follow the Installation Instructions before proceeding. Set the
thermostat mode to “OFF” prior to changing settings in setup
or restoring Factory Defaults.
CAUTIO
N

7 Manual & Installer Guide
This thermostat has the ability to receive updates to its firmware. Periodically firmware
updates are released by the manufacturer to add features and/or performance enhancements.
This manual was produced reflecting the most current firmware/feature set at the time of
publication. Firmware releases after the installed version may not be adequately depicted in
this manual. Please refer to the appropriate website or contact your place of purchase to learn
about changes to the thermostat firmware.
Under Industry Canada regulations, this radio transmitter may only operate using an antenna
of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada.
To reduce potential radio interference to other users, the antenna type and its gain should
be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that
necessary for successful communication.
Cet appareil est conforme avec Industrie Canada, exempts de licence standard RSS(s).
Son fonctionnement est soumis aux deux conditions suivantes: 1) ce dispositif ne doit pas
causer d’interférences, et 2) ce dispositif doit accepter toute interférence, y compris les
interférences qui peuvent causer un mauvais fonctionnement de l’appareil.
En vertu des règlements d’Industrie Canada, cet émetteur de radio ne peut fonctionner en
utilisant une antenne d’un type et maximale (ou moins) Gain approuvé pour l’émetteur par
Industrie Canada. Pour réduire les interférences radio potentielles aux autres utilisateurs,
le type d’antenne et son gain doivent être choisis afin que la puissance isotrope rayonnée
équivalente (PIRE) ne est pas plus de ce qui est nécessaire pour une communication réussie.
We, ProStat+, declare under our sole responsibility that the device to which this declaration
relates: 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.
MUH-SKYPORT2

Manual & Installer Guide 8
Auto-Changeover: A mode in which the thermostat will turn on the heating or
cooling based on room temperature demand.
Cool Setpoint: The warmest temperature that the space should rise to before cooling
is turned on (without regard to deadband).
Deadband: The number of degrees the thermostat will wait, once a setpoint has
been reached, before energizing heating or cooling.
Differential: The forced temperature difference between the heat setpoint and the
cool setpoint in Auto Mode.
Heat Setpoint: The coolest temperature that the space should drop to before heating
is turned on (without regard to deadband).
Icon: The word or symbol that appears on the thermostat display.
Mode: The current operating condition of the thermostat
(i.e. Off, Heat, Cool, Auto).
Non-Programmable Thermostat: A thermostat that does not have the capability of
running Time Period Programming.
Programmable Thermostat: A thermostat that has the capability of running Time
Period Programming.
Temperature Swing: Same as Deadband.
Time Period Programming: A program that allows the thermostat to automatically
adjust the heat setpoint and/or the cool setpoint based on the time of the day.
Same as Schedule.
2 Glossary of Terms

1 Manual & Installer Guide
Sub Menu Screen
Sub Menu Screen
Home Button
Sub Menu
Buttons
Scrolling
Buttons
Main Menu Screen
Main Menu Screen
Scrolling
Buttons
Back
Button
Menu
Buttons
Indicates Options
Available
Not connected
to Wi-Fi
Connected to local
access point w/IP
address without
Skyport enabled
Connected to local
access point w/IP
address, but not yet
connected to Skyport
Connected to Skyport
Connectivity Symbol Table
3 Get to Know Your Thermostat
Backlit TouchScreen Display
HOME SCREEN
Fan Button
Warmer
& Cooler
Button
SD Card Slot
Drop Down
Dashboard
Button
Indoor Humidity Reading
(PSP4273RT ONLY)
Outdoor Temperature
Home/Away Button Mode Buttons
Menu Button
Connectivity Symbol
Date & Time

Manual & Installer Guide 2
Get To Know Your Thermostat
Drop Down
Dashboard Button
Wi-Fi
Connection
Icon Not connected
to Wi-Fi
Connected to local
access point w/IP
address without
Skyport enabled
Connected to local
access point w/IP
address, but not yet
connected to Skyport
Connected to Skyport
Connectivity Symbol Table
Dropdown Dashboard (The contents of your Dashboard may vary)
The Dropdown Dashboard displays temperature, humidity, and other readings.
It will also show the high and low readings of the day.
There is also a button to exit
the dashboard and return to
the home screen.
The dropdown dashboard will
bring you into one of five screens.
Icons at the bottom of each screen
allow you to move between
other screens to view (but not
alter) various items within the
thermostat.
These five screens are: EQUIPMENT
RUNTIMES
WEATHER ALERTS
SENSORS THERMOSTAT
INFORMATION
Drop Down
Dashboard Button
Wi-Fi
Connection
Symbol

3 Manual & Installer Guide
Get To Know Your Thermostat
Equipment Runtimes
This screen allows you to view
daily heating and cooling runtimes
and can show details about which
stages were active. To view one
week of runtime data, press
menu > information > view
runtime graphs
Weather
This screen only appears when
the thermostat is communicating
with Skyport. Current temperature/
humidity and a 3 day forecast
is shown based on the address
details entered for the Skyport
location that contains this
thermostat.
Sensors
This screen shows values
from the sensors inside of the
thermostat, optional wired outdoor
temperature sensor and paired
wireless sensors. Daily min/
max are also shown (resets at
midnight).

Manual & Installer Guide 4
Get To Know Your Thermostat
Alerts
This screen shows some information
about any active alerts. More
information about alerts as well as
resetting active alerts can be found
at menu > alerts.
Thermostat Information
This section contains four
different screens that allow easy
viewing of the thermostat model
number, firmware revision, wifi
and Skyport status as well as dip
switch settings, active outputs and
other items. Press on left side of
screen to change between About,
Equipment, Outputs and Service.
PSP4273RT Residential

5 Manual & Installer Guide
Care and Use of Your Thermostat
Pencils, pens and other sharp objects should never be used on your thermostat; these
may damage your touchscreen. Only use your finger tip to press the touchscreen
buttons.
Use a soft, damp cloth to clean the screen.
DO NOT USE ABRASIVE CLEANERS OR CLEANERS THAT CONTAIN
SOLVENTS. DO NOT SPRAY ANYTHING DIRECTLY ONTO THE THERMOSTAT.
Get To Know Your Thermostat

Manual & Installer Guide 6
Selecting Your Desired Temperature and Mode
The Heat or Cool Setpoint is
the temperature the room
has to reach before heating
or cooling will turn on.
(Without regard
to deadband)
Press or to adjust temperature
Press or the MODE Icon
HEAT will allow only heat operation.
COOL will allow only cool operation.
AUTO will allow both Heat and Cool operation.
OFF - heating and cooling systems are turned off.
AUTO-CHANGEOVER MODE - Pressing the WARMER or
COOLER buttons in Auto mode will adjust both the heat and cool setpoints simultaneously.
To adjust heat and cool setpoints individually, choose HEAT mode to adjust the heat setpoint
and COOL mode to adjust the cool setpoint, then return to AUTO mode.
HEAT OR COOL MODE - Pressing the WARMER or COOLER buttons in Heat or Cool mode
will adjust only the heat or cool setpoints.
Using the Fan Button
Press the FAN Icon
FAN ON fan runs constantly even in OFF Mode.
FAN AUTO fan only runs with a heating or cooling demand.
Cool Setpoint
Warm
er
Button
Fa
n
Cooler
Button
Heat Setpoint
4 Quick Start - Temperature, Modes & Fan

7 Manual & Installer Guide
Set Current Time
Use AM/PM - ON
Set Time & Date
Set Current Date
Daylight Savings Setup
Daylight Savings Time - OFF
Start Schedule
Starts On
Day
Month
Stop Schedule
Ends On
Day
Month
(2nd)
(Sun)
(March)
(1st)
(Sun)
(November)
NOTE: When the thermostat is connected to a Skyport
account, the Time & Date are automatically synchronized
to the Skyport Cloud, including automatic Daylight Savings
adjustments.
Your time zone is selected in the Skyport web application.
Set Time & Date

Manual & Installer Guide 8
Setting the Time
Set Current Time (12:00 AM)
hr +
hr -
min +
min -
Press and
to set the current time.
Press when finished.
Press then to scroll down.
Press
Use AM/PM - ON
Use AM/PM - OFF
For 12 hour AM/PM clock
For 24 hour clock
Choose
Press
when finished.
Set Time & Date
Pres
s
BACK
MENU
BACK

9 Manual & Installer Guide
Setting the Date
Set Current Date
Daylight Savings Setup
12/1/2020
Press
or
to set the current month and year.
when finished.
Press the day on the calendar
27 28 29 30 123
Su Mo Tu We Th Fr Sa
45678910
17161514
13
1211
18 19 20 21 22 23 24
31302928272625
1234567
Press
Press
Daylight Savings Time - OFF
Daylight Savings Time - ON
Start Schedule
Starts On
Day
Month
Stop Schedule
(2nd)
(Sun)
(March)
Ends On
Day
Month
(1st)
(Sun)
(November)
Tu rn Daylight Savings
Time on or off.
Adjust when Daylight
Savings Time begins.
Adjust when Daylight
Savings Time ends.
after making a change
to a selection.
Press
or the Home button
when finished.
Press
BACK
BACK
BACK

Manual & Installer Guide 10
Connect to Wi-Fi (from initial start up)
When power is connected to the thermostat and it has not been configured
to connect to a Wi-Fi Access point, the following message appears:
Wi-Fi Set Up
No Wi-Fi access points are
configured for your thermostat.
Would you like to set up one now?
YES NO
YES Press YES
Select the access point you wish to connect to from the list.
Enter the password for the Wi-Fi Access Point and press NEXT.
Select automatic setup and press NEXT.
When finished, a dialog box will appear confirming the successful
connection to the local Wi-Fi Access Point.
Select OK, then the Wi-Fi status page will appear. Upon closing of the Wi-Fi
status page, you will be asked to join the thermostat to a Skyport account.
Select YES and follow the onscreen instructions to create a new Skyport
account or to add the thermostat to an existing account.

11 Manual & Installer Guide
Quick Start - Connect to Wi-Fi (from menus)
72
MENU
72
Press MENU
Press DOWN
Press Wi-Fi Setup
Select the access point from the list that you want to connect to.
Enter the password for the Wi-Fi Access Point and press NEXT.
Select automatic setup and press NEXT.
When finished, a dialog box will appear confirming the successful
connection to the local Wi-Fi Access Point.
Select OK, then the Wi-Fi status page will appear. Upon closing of the Wi-Fi
status page, you will be asked to join the thermostat to a Skyport account.
Select YES and follow the onscreen instructions to create a new Skyport
account or to add the thermostat to an existing account.
• Wi Fi Setup
Press Wi-Fi

Manual & Installer Guide 12
• Skyport Account
Create Account Now
4
Although there is more than one way to create a Skyport account, the steps below
illustrate creation from the mobile app.
If the thermostat is connected to the local Wi-Fi Access Point, but not yet joined to a
Skyport account, you may join the thermostat to an account by doing the following:
Select MENU from the thermostat’s home screen.
Scroll down
Select Skyport
Select Skyport Account and follow the onscreen instructions.
1. Download the ProStat Skyport mobile app
2. Select “Create account now”
3. Follow onscreen instructions to create an account and add a thermostat
to the Skyport account.
Quick Start - Connect to Wi-Fi (from menus)