Robertshaw RS10420T Wi-Fi Programmable Touchscreen Thermostat Installation Manual

Robertshaw RS10420T Wi-Fi Programmable Touchscreen Thermostat

The Robertshaw® Programmable WiFi Thermostat allows you to control the temperature anytime and anywhere. It features a large backlit display and LCD touchscreen for ease of operation. Compatible with any IOS or Android Smartphone.

Thermostat System Types

Gas, Oil, or Electric Heat with Air Conditioning

Heat Pumps (without auxiliary or emergency heat)

Multi-Stage Systems

Heat-Only, including for Floor and Wall-Furnace

Cool-Only

750 Millivolt Heating Systems

Power Options
Hardwire (Common Wire) only

IMPORTANT SAFETY INFORMATION

WARNING:

• Always turn off power at the main power source by unscrewing fuse or switching the circuit breaker to the off position before installing, removing, cleaning, or servicing the thermostat.
• Read all of the information in this manual before installing or programming this thermostat.
• This is a 24V AC low-voltage thermostat. Do not install on voltages higher than 30V AC.
• All wiring must conform to local and national building and electrical codes and ordinances.
• Do not short (jumper) across terminals on the gas valve or at the system control to test installation. This will damage the thermostat and void the warranty.

Specifications

• Temperature Display Range…32°F to 99°F (0°C to 40°C)
• Temperature Control Range …..41°F to 90°F (5°C to 32°C)
• Load Rating ……. 1 amp per terminal, 1.5 amp maximum all terminals combined
• Differential ……… The heating is adjustable from 0.2° to 2.0°
• Cooling is adjustable from 0.2° to 2.0°
• Power Source …… 18 to 30 VAC, NEC Class II, 50/60 Hz for hardwire
• Operating Ambient Temperature……32°F to +105°F (0°C to +41°C)
• Operating Humidity ……..90% non-condensing maximum
• Dimensions …..4.7”W x 4.4”H x 1”D

Wallplate Installation

1. Horizontal Mount
2. Vertical Mount

For a vertical mount, put screws on the top and bottom.
For a horizontal mount, put screws on the left and the right.

Caution: Electrical Hazard
Disconnect power before installing this product. Failure to do so can cause electric shock or equipment damage.

Mercury Notice
This product is mercury-free. However, if this product is replacing a control that contains mercury, it needs to be disposed of properly. Contact your local waste management authority for instructions regarding recycling and proper disposal of the control.

Mounting Thermostat

Align the 4 tabs on the faceplate with the corresponding slots on the back of the thermostat, then push gently until the thermostat snaps into place.
Install the thermostat 4 to 5 feet above the floor in an area with good air circulation and average temperature.
For new installations, mount the thermostat on an inside wall, 4-5 feet above the floor. Do not install the thermostat in the following locations:

• Behind a Door
• In a Corner
• Near Air Vents
• In Direct Sunlight
• With an Outside Wall Behind the Thermostat
• Near any Heat or Steam Generating Fixtures
• Near any Concealed Pipes or Chimneys
  Installation at these locations will affect thermostat operation.

Getting to know your thermostat

1. Fan Buttons
2. Next Step Buttons
3. Set Time Buttons
4. Program Buttons
5. Menu Buttons
6. System Buttons
7. Set-Point Buttons

1. Days of the week and time
2. Indicates the current room temperature
3. Displays the user-selected set-point temperature
4. The hold is displayed when the thermostat program is overridden.
5. System Operation Indicators: If these icons are flashing, there is a 5-minute delay for compressor protection.
6. Programmable Time Periods: Residential uses 4 time periods – WAKE, RETURN, LEAVE and SLEEP.
7. Program Menu Options Shows different options during programming.

WIRING

Terminal Designations

Installation Tip
Do not overtighten terminal block screws, as this can damage the terminal block. A damaged terminal block can keep the thermostat from fitting on the sub base correctly or cause system operation issues. Max Torque = 6in/lbs.

Notes

Wire Specifications
Use 18- to 22-gauge thermostat wire. Shielded wire is not required.

Emergency Heat Operation:
In many heat pump systems with no emergency heat relay, a jumper can be installed between E and W2 to turn the thermostat into a single-stage control for Emergency Heat Operation.

Float Switches:
A float switch or similar device which breaks the control wire (Y) not the power (R) should be installed. Interrupting the power circuit will shut off the power to the thermostat completely and stop it from operating.

WIRING DIAGRAMS

1. Power supply
2. Factory-installed jumper. Remove only when installing on 2-transformer systems
3. Use either O or B terminals for reversing valve 24 VAC common connection

Typical 2H/2C System: 1 Transformer

Typical Heat Only System With Fan

Note: 
In many systems with no emergency heat relay, a jumper can be installed between E and W2.

Typical 3H/2C or 2H/1C Heat Pump System

Typical 2H/2C System: 2 Transformers

INSTALLER SETUP

1. Press MENU.
2. Press and hold TECHNICIAN SETUP for 3 seconds.
3. Configure the installer options as desired using the table below.
   Use or to change settings and the NEW STEP or PREV STEP to move from one step to another. Note: Only press DONE when you want to exit the Installer Setup optioN

PROGRAMMING

Programming Notes

Differential Setting
The second stage will turn ON at 2x the differential setting and OFF at 1x the differential setting. For example, if the differential setting is 0.5° for heating and the thermostat is set at 70°F, the first stage will turn on at 69.5°F. The second stage will turn on at 69°F and turn off at 69.5°F. If the third stage is used, the third stage will turn on at 68.5°F and turn off at 69°F.

Keypad Lockout
The installer can activate a keypad lockout after exiting Tech Setup.

Auto Changeover
In Auto mode, users can toggle between Auto Heat or Auto Cool by pressing System only when the current mode has reached its temperature set point. To switch out of Auto mode, hold down System. To return to Auto mode, toggle the System key to Auto.

Reminders
Once a Reminder has been turned on and set, the elapsed time can be checked by navigating the Tech Setup step. The time can be reset by pressing and holding the third button from the left for 3 seconds. Resetting an expired Reminder can be done by pressing and holding the 3rd button from the left for 3 seconds.

Contractor Call Number
If the contractor call number is selected ON, the selected phone number will show in the display if there has been a continuous call for heating or cooling for 24 hours or if the FAN button is held down for 3 seconds. To remove the phone number from the display, hold the FAN button down for 3 seconds.

Set the Time of day and day of the week (If using programming)

1. Press the MENU button.
2. Press SET TIME.
3. Day of the week will be flashing. Use to select the current day of the week.
4. Press NEXT.
5. The current hour will be flashing. Use to select the current hour.
   Note the correct a.m. or p.m. indicator is selected.
6. Press NEXT.
7. The minutes will be flashing. Use to select current minutes.
8. Press DONE when completed.

• Select HEAT or COOL using the system key.
  Note: Heat and cool need to be programmed separately.
• Press MENU (If the menu does not appear first, press RUN SCHED).
• Press SET SCHED. Note: Monday will be displayed and the WAKE icon is shown.
• Time will be flashing. Use to make your time selection for that day’s  WAKE time period. Note: If you want the fan to run continuously during this time period, select ON with the FAN key.
• Press NEXT STEP.
• The set-point temperature will be flashing. Use set-point selection for the WAKE time period for Monday–Friday (or Monday if in 7 Day mode).
• Press NEXT STEP.
• Repeat steps 4 through 7 for the LEAVE time period, for the RETURN time period, and for the SLEEP time period for Monday–Friday
  (or Monday if in 7 Day mode).

Default Program

This thermostat is pre-programmed for energy-saving operation. The default program is below:

SETTING UP WIFI CONNECTION AND APP

The Robertshaw RS10420T Programmable WiFi Thermostat works with the Robertshaw Thermostat App which is available for IOS and Android platforms. Users can download the App from the Apple store or Google Play.

Customer Service +1.800.304.6563
Technical Service +1.800.445.8299
HVACCustomerService@robertshaw.com
www.robertshaw.com • 352-00301-001352-00308-001 Rev. B
© 2021 Robertshaw Controls Company.
Robertshaw® is a trademark of Robertshaw Controls Company.

Reference

DOWNLOAD MANUALS:

Robertshaw RS10420T Wi-Fi Programmable Touchscreen Thermostat Installation Manual

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Robertshaw RS10420T Wi-Fi Programmable Touchscreen Thermostat Quick Start Guide

Robertshaw RS10420T Wi-Fi Programmable Touchscreen Thermostat Product Specifications Guide

Robertshaw RS10420T Wi-Fi Programmable Touchscreen Thermostat Installation Manual