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Robertshaw RS9423T Installation Manual
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Robertshaw RS9423T Installation Manual

Robertshaw RS9423T Installation Manual

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RS9423T
Installation Manual

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Summary of Contents for Robertshaw RS9423T

  • Page 1 RS9423T Installation Manual...

  • Page 2: Table Of Contents

    Power Options Thank you for purchasing a Robertshaw ® thermostat. This manual will describe • Battery Power only how to install and test the Robertshaw • Hardwire (Common Wire) only RS9423T thermostat. • Hardwire (Common Wire) Thermostat System Types with Battery Backup...

  • Page 3: Installation

    INSTALLATION Specifications Display Range 32°F to 99°F (0°C to 40°C) Control Range 41°F to 90°F (5°C to 32°C) 1 amp per Terminal, 1.5 amp Maximum Load Rating all Terminals Combined Heating is Adjustable from 0.2° to 2.0° Differential Cooling is Adjustable from 0.2° to 2.0° 18 to 30 VAC, NEC Class II, 50/60 Hz for Hardwire - Power Source Battery Power from 2 AAA Alkaline Batteries...
  • Page 4 INSTALLATION 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: •...
  • Page 5 INSTALLATION Wallplate Installation 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 which contains mercury, it needs to be disposed of properly.
  • Page 6 INSTALLATION 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. Battery Installation Battery installation is optional if used with 24VAC power (R and C terminal is connected).

  • Page 7: Thermostat Quick Reference

    THERMOSTAT QUICK REFERENCE Getting to Know Your Thermostat (RS9423T) 1 Fan Buttons 2 Next Step Buttons 3 Set Time Buttons 4 Program Buttons 5 Menu Buttons 6 System Buttons 7 Setpoint Buttons 8 Battery Cover 9 Button/Battery Access...
  • Page 8 THERMOSTAT QUICK REFERENCE Getting to Know Your Thermostat (RS9423T) 1 Days of the week and time 2 Indicates the current room temperature 3 Displays the user selected setpoint temperature 4 Hold is displayed when thermostat program is overridden 5 System Operation Indicators:...

  • Page 9: Rs9055Out Optional Remote Sensor

    Outdoor Sensor • Durable weatherproof design The RS9055OUT is an optional wire- less outdoor remote temperature • Compatible with RS9423T or RS10421T sensor and can be used for dual fuel thermostat balance point applications. • Wireless range from sensor to thermostat is 328 feet (100m) •...
  • Page 10 9 0 5 5 O U T RS9055OUT OPTIONAL REMOTE SENSOR 9 0 5 5 O U T Subbase dismantling Mounting & Battery Installation Subbase dismantling To install the thermostat detach the rear panel of the thermostat from the Detach the rear panel of the remote To install the thermostat detach the sensor from the front panel by front panel by loosening the screws...
  • Page 11 9 0 5 5 O U T RS9055OUT OPTIONAL REMOTE SENSOR Mounting & Battery Installation Install thermostat Installed in the same 1. Position the rear panel environment as the compressor with the insert at the top of the remote 1.Position the top sensor and to wards the bot then snap...
  • Page 12 Getting to Know Your Remote Temperature Sensor The temperature of RS9055OUT Remote Sensor is displayed in the upper left corner of RS9423T (OUTDOOR shows alternately with time). When HEAT PUMP is selected to ON (when the oil and gas dual-purpose system is enabled), When the RS9055OUT Remote Sensor induction temperature is greater than the DUAL FUEL setting temperature, it will automatically use electric heating.

  • Page 13: Wiring

    WIRING Caution: Electrical Hazard Disconnect power before installing this product. Failure to do so can cause electric shock or equipment damage. Wiring 1. If you are replacing a thermostat, make note of the terminal connections on the thermostat that is being replaced. In some cases the wiring connections will not be color coded.
  • Page 14 WIRING Wiring Tips Common Wire Heat Pump Systems The C (common wire) is optional (with No Aux. or when the thermostat is powered Emergency Heat) by batteries. If wiring to a heat pump, use a small piece of wire (not supplied) to Wire Specifications connect terminals E and W2 to turn Use 18- to 22-gauge thermostat...
  • Page 15 WIRING 2 Heat 2 Cool 2 Heat 1 Cool Heat 3 Heat 2 Cool Heat Terminal Conventional Pump System Pump System System Transformer Power Transformer Power Transformer Power (cooling) (cooling) (cooling) Transformer Power Transformer Power Transformer Power (heating) (heating) (heating) Transformer Common Transformer Common Transformer Common...

  • Page 16: Wiring Diagrams

    WIRING DIAGRAMS Power supply In a single-transformer system, leave the metal jumper in place between RH and RC. Remove the jumper in two-transformer systems. Typical 2H/2C System: 1 Transformer Typical Cool-Only System with Fan...
  • Page 17 WIRING DIAGRAMS Typical Heat Only System With Fan Note In many heat pump systems without an 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. Use either O or B terminals for reversing valve.
  • Page 18 WIRING DIAGRAMS Typical 2H/2C System: 2 Transformer...
  • Page 19 WIRING DIAGRAMS Typical 3H/2C or 2H/1C Heat Pump System...

  • Page 20: Technician Setup

    TECHNICIAN SETUP 1. Press MENU button. 2. Press and hold TECHNICIAN SETUP button for 3 seconds. This 3 second delay is designed so that homeowners do not accidentally access the installer settings. 3. Configure the installer settings as desired using the table below. 4.
  • Page 21 TECHNICIAN SETUP Tech Setup Steps LCD Will Show Adjustment Options Default The minimum compressor runtime can be adjusted from The installer can select the OFF to 3, 4 or 5 minutes. If 3, 4 Minimum minimum runtime for the or 5 is selected, the compressor Compressor compressor to help protect the will run for at least the selected...
  • Page 22 TECHNICIAN SETUP Tech Setup Steps LCD Will Show Adjustment Options Default The heating differential is factory preset at 0.4°. This means that whenever the room temperature cools by 0.4° full degree from Heating The heating differential setting is the temperature setting, the Differential adjustable from 0.2°F to 2°F.
  • Page 23 TECHNICIAN SETUP Tech Setup Steps LCD Will Show Adjustment Options Default The thermostat can be configured to operate up to a 2H/2C Use the key to first conventional heat pump system select stages of heat, press next - Stages of Heat or a 4H/2C conventional heat then select stages of cool.
  • Page 24 TECHNICIAN SETUP Tech Setup Steps LCD Will Show Adjustment Options Default The cooling fan delay setting This setting delays the fan from can be set to OFF, 15, 30, 60 or 90 coming on in cool mode and seconds. If 15, 30, 60 or 90 seconds Cooling Fan keep keeps it running after the is selected, the fan will not turn...
  • Page 25 TECHNICIAN SETUP Tech Setup Steps LCD Will Show Adjustment Options Default 12 or 24 12 Hour Select a 12 or 24 hour clock Use the key to Hour Clock setting. Clock select 12 or 24 hour clock. Select GAS or ELECT depending Operation on the type of furnace.
  • Page 26 TECHNICIAN SETUP Tech Setup Steps LCD Will Show Adjustment Options Default The display light can be con- figured to come on only when AUTO - Any key ON Display AUTO the light key or any other key Light ON - Always ON is selected, or to stay on ALL of the time.
  • Page 27 TECHNICIAN SETUP Tech Setup Steps LCD Will Show Adjustment Options Default Select 1, 5, 10, 15, 20, 30 or 45 minutes. When IAQ fan mode This setting allows for the selec- is enabled, the thermostat will IAQ Minutes tion of the minimum number of ensure the fan runs at least the Per Cycle minutes that the fan will run for...
  • Page 28 TECHNICIAN SETUP Differential Setting Tip The second stage will turn on at 2x the differential setting and turn off at 1x the differential setting. For example, if the differential is 0.5°F for heating and the thermostat is set at 70°F, the first stage will turn on at approximately 69.5°F and turn off at approximately 70.5°F.

  • Page 29: Programming

    PROGRAMMING Set Time of Day and Day of Week 1. Press the MENU button. 2. Press SET TIME. 3. Day of the week will be flashing. Use the to select the current day of the week. 4. Press NEXT. 5. The current hour will be flashing. Use to select the current hour.
  • Page 30 PROGRAMMING Set Program Schedule Follow these steps to customize your 5+1+1 or 7-day program schedule: Weekday 1. Select HEAT or COOL. Note: Heat and cool need to be programmed separately. 2. Press MENU (If menu does not appear first, press RUN SCHED). 3.
  • Page 31 FACTORY DEFAULT PROGRAM Robertshaw RS9423T thermostats are shipped with an energy saving default program. ® The thermostat can be programmed to have all the weekdays the same, the same setpoints for all weekdays or a separate program for Saturday and a separate program for Sunday.
  • Page 32 Customer Service +1.800.304.6563 Technical Service +1.800.445.8299 Use Phone Year HVACCustomerService@robertshaw.com to Scan for Limited 352-00317-001 www.robertshaw.com • 352-00301-001 Warranty Info Warranty © 2023 Robertshaw Controls Company. Robertshaw is a trademark of Robertshaw Controls Company. ®...