RS9220 Installation Manual
INSTALLATION MANUAL Thank you for purchasing a Robertshaw thermostat. This manual will describe how to install and test the Robertshaw RS9220 thermostat.
INSTALLATION LOCATION Install the thermostat 4 to 5 feet above the floor in an area with good air circulation and average temperature. For new installations, mount thermostat on an inside wall, 4-5 feet above the floor.
THERMOSTAT QUICK REFERENCE Getting to know your thermostat 1 LCD Mon Displays the user selected set-point temperature. Days of the week and time.
WALLPLATE INSTALLATION Mercury Notice: Caution: Electrical Hazard This product is mercury-free. However, if this product is replacing a control which 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. Disconnect power before installing this product. Failure to do so can cause electric shock or equipment damage. For a vertical mount, put screws on the top and bottom.
WIRING 1 Turn Off Power to Heating/Cooling System or Circuit breaker box Heating/cooling system power switch 2 Remove Old Thermostat Remove old thermostat but leave wallplate with wires attached.
WIRING 3 Label Wires with Tags Label the wires using the supplied wire labels as you disconnect them. Wiring Labels Apply these wiring labels to each wire with the appropriate terminal designation as you remove it from the existing thermostat. B B Y2 G G H R R RC Y2 C C E E F F H L L O O P P T U RC RH RH T V/VR V/VR W W W1 W1 W2 X X1 X1 X2 X2 Y AUX X W3 W3 Y Y1 Y1 Remove wallplate from the new thermostat and mount onto wall.
WIRING 5 Mount Wallplate for New Thermostat Mount the new wallplate using the included screws and anchors. Drill 3/16-in. holes for drywall Drill 3/16-in.
WIRING 6 Connect Wires Simply match wire labels. If labels do not match letters on the thermostat, check “Alternate Wiring (Conventional Systems)” on page 9 and connect to terminal as shown (see notes, below).
WIRING Alternate Wiring (Conventional Systems) If labels do not match letters on the thermostat, check the chart below and connect to terminal as shown here (See notes, below). or or or or or or If wires will be connected to both RC and RH/R terminals, remove metal jumper. 4 If there is C or X wire available then you can connect with C terminal. If there is no C or X wire then no need to connect with C terminal.
WIRING Terminal Designations C 24 VAC Common O Heat pump reversing valve energized In cooling B Heat pump reversing valve energized in heating W Heat relay Stage 1 W2 Heat relay Stage 2 RH 24 VAC power for heating RC 24 VAC power for cooling G Fan relay Y Compressor relay Stage 1 Y2 Compressor relay Stage 2 Notes Wire specifications Use 18- to 22-gauge thermostat wire. Shielded wire is not required. 10 Common wire The C (common wire) is optional when the thermostat is powered by batteries.
WIRING Power supply. Optional 24 VAC common connection when thermostat is used in battery power mode.
WIRING Typical Heat-Only System Typical Cool Only System (HOT) (HOT) COMPRESSOR RELAY HEAT RELAY FAN RELAY Typical 2H/2C Heat Pump System w/o Aux.
INSTALLER SETUP MENU Installer Setup Menu This thermostat has an installer setup menu for easy configuration. Follow the procedure below to set up the thermostat to match the specific heating/cooling system. 1. Press MENU. 2. Press and hold TECH SET for 3 seconds. 3. Configure the installer options as desired using the table below. Use or to change settings and NEW STEP or PREV STEP to move from one option to another. Note: Only press DONE when you want to exit the Installer Setup options.
INSTALLER SETUP MENU Settings Filter Change Reminder Room Temperature Calibration Minimum Compressor On-Time 14 Display This setting will flash FILT in the display after the elapsed run time to remind the user to change the filter. The OFF setting will disable this feature. This setting allows the installer to change the calibration of the room temperature display so that, for example, the thermostat would read 72°F instead of 70°F.
INSTALLER SETUP MENU Settings Compressor Short Cycle Delay Display The compressor short cycle delay setting will not allow the compressor to be turned on for 5 minutes after it was last turned off in order to protect the compressor. Adjustment Options Default Next step The compressor short cycle delay setting can be removed by selecting OFF. ON The cooling differential setting is adjustable from 0.2°F to 2°F. 0.5 The heating differential setting is adjustable from 0.2°F to 2°F. 0.
INSTALLER SETUP MENU Settings Display Adjustment Options Default Next step For C F for Fahrenheit Select F for Fahrenheit temperature display or select C for Celsius display. C for Celsius F Prev step Next step 12 or 24 Hour Clock Use and to select 12 or 24 hour clock. Select a 12 or 24 hour clock setting. 12 Prev step Next step Fan Operation GAS - GS or ELEC-EL Select GAS or ELEC depending on the type of furnace.
INSTALLER SETUP MENU Settings Display This thermostat can be configured to have 7 Day, 5+1+1 programming or be non-programmable. Program Options Default Next step If 7 Day is selected, in Set Time all seven days will need to be programmed individually. If 5+1+1 programming is selected, in Set Time Monday–Friday will be programmed together and Saturday and Sunday will need to be programmed individually.
MOUNTING & BATTERY 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. Mon Room Set At Menu SLEEP FAN ON AUTO SYSTEM COOL OFF HEAT Battery Installation Battery installation is optional if used with AC power (the C terminal is connected). During power outages, the batteries will save settings and power the display. 18 Insert 2 AAA Alkaline batteries.
PROGRAMMING Set Time of Day and Day of Week 1. Press MENU. 2. Press SET TIME. 3. Day of the week will be flashing. Use or to select the current day of the week. 4. Press NEXT STEP. 5. The current hour will be flashing. Use or to select the current hour. Note the correct a.m. or p.m. indicator is selected. 6. Press NEXT STEP. 7. The minutes will be flashing. Use or to select the current minutes. 8. Press DONE when completed.
PROGRAMMING Default Program This thermostat is pre-programmed for energy saving operation. The default program is below: Day of the Week Weekday Events Wake Leave Return Sleep Saturday Wake Leave Return Sleep Sunday Wake Leave Return Sleep 20 Default Program Set-Point Temperature Time (Heat) 6 a.m. 70°F (21°C) 8 a.m. 62°F (17°C) 6 p.m. 70°F (21°C) 10 p.m. 62°F (17°C) 8 a.m. 70°F (21°C) 10 a.m. 62°F (17°C) 6 p.m. 70°F (21°C) 11 p.m. 62°F (17°C) 8 a.m. 70°F (21°C) 10 a.m. 62°F (17°C) 6 p.m.
PROGRAMMING You can use the table below to plan your customized program schedule.
PROGRAMMING Custom Programming This thermostat can be configured to have 7 Day or 5+1+1 programming. If 7 Day is selected, all seven days will need to be programmed individually. If 5+1+1 programming is selected, Monday–Friday will be programmed together and Saturday and Sunday will need to be programmed individually. There are four time periods for each day (WAKE, LEAVE, RETURN, SLEEP). Follow the steps below to customize your program schedule: 1. Select HEAT or COOL.
SPECIFICATIONS Specifications Temperature Display Range....................41°F to 95°F (5°C to 35°C) Temperature Control Range....................44°F to 90°F (7°C to 32°C) Load Rating.............................................1 amp per terminal, 1.5 amp maximum all terminals combined Display Accuracy....................................± 1°F Differential............................................... Heating is adjustable from 0.2°F to 2.0°F Cooling is adjustable from 0.2°F to 2.0°F Power Source.........
Customer Service +1.800.304.6563 Technical Service +1.800.445.8299 Year HVACCustomerService@robertshaw.com Limited 352-00305-001 Rev. B www.robertshaw.com • 352-XXXX-XXX Warranty © 2021 Robertshaw Controls Company. Robertshaw® is a trademark of Robertshaw Controls Company.
