INSTALLATION MANUAL This manual covers the following models: RS8110 Thermostat Applications Guide Power Type Description Battery Power Hardwire (Common Wire) Gas or Oil Heat Hardwire (Common Wire) with Battery Backup Electric Furnace Heat Pump (No Aux. or Emergency Heat) Heat Pump (with Aux. or Emergency Heat)
INSTALLATION TIPS Wall locations Thethermostatshouldbeinstalledapproximately4to5feetabovethefloor. Select an area with average temperature and good air circulation. Do not install thermostat in locations: • Close to hot or cold air ducts • That are in direct sunlight • With an outside wall behind the thermostat •...
THERMOSTAT QUICK REFERENCE Getting to know your thermostat Displays the user selectable Set At Room Set At Room setpoint temperature. System operation indicators: The COOL, HEAT or FAN icon will Cool display when the COOL, HEAT or SYSTEM FAN is on. HEAT COOL AUTO...
SUBBASE INSTALLATION Mercury Notice: Caution: All of our products are mercury free. Electrical Hazard However, if the product you are replacing Failure to disconnect the power before contains mercury, dispose of it properly. beginning to install this product can Your local waste management authority cause electrical shock or equipment can give you instructions on recycling and damage.
WIRING 1 Turn Off Power to Heating/Cooling System Heating/cooling system Circuit breaker power switch 2 Remove Old Thermostat Remove old thermostat but leave wallplate with wires attached. Do not remove wallplate yet Terminal designation...
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WIRING 3 Label Wires with Tags Label the wires using the supplied wire labels as you disconnect them. Wire Labels Wiring Labels Apply these wiring labels to each wire with the appropriate terminal designation as you remove it from the existing thermostat. Terminal designation 4 Separate Wallplate from New Thermostat Remove wallplate from the new thermostat and mount onto wall.
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WIRING 5 Separate Wallplate from New Thermostat Mount the new wallplate using the included screws and anchors. Drill3/16-in.holesfordrywall Drill3/16-in.holesforplaster...
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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). Remove metal jumper if you have both R and RC wires Insert wires and tighten Screw...
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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). Remove metal jumber if wires will be connected to both RH/R and RC terminals. If a 24 volt common wire is present (typically labeled C or X) connect it to the C terminal.
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WIRING Warning: Caution: Electrical Hazard All components of the control system and Failure to disconnect the power before the thermostat installation must conform to beginning to install this product can cause Class II circuits per the NEC Code. electrical shock or equipment damage. Wiring Terminal Designations Heat relay...
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WIRING Power supply. Factory-Installed jumper. Remove only when installing on 2-transformer systems. Use either O or B terminals for reversing valve. Heat pump application ONLY. Use a small piece of wire (not supplied) to connect W and Y terminals. Set fan operation switch to either gas or electric based on your system. Optional 24 VAC common connection not to be used when powering thermostat with batteries.
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WIRING Typical 1H/1C heat pump system Typical heat-only system L1 (HOT) L1 (HOT) COMPRESSOR RELAY COOL REVERSING VALVE FAN RELAY HEAT REVERSING HEAT RELAY VALVE Typical heat-only system with fan Typical cool-only system L1 (HOT) L1 (HOT) COMPRESSOR RELAY FAN RELAY HEAT RELAY FAN RELAY Tips:...
TECHNICIAN SETUP Gas or Electric Setup Gas: For systems that control the fan during a call for heat, put the fan operation switch to the GAS position. Electric: The thermostat operation switch should be put in the ELEC position. This setting allows the thermostat to operate the fan when the fan relay is connected to the G terminal.
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TECHNICIAN SETUP Adjusting the Differential (Also called Adjusting Room Temperature Calibration, Fahrenheit/Celcius Display and Swing or Cycle rate) Compressor Delay The differential is adjustable, a smaller Wait approximately 10 seconds for Press again to access the differential will cause more frequent the thermostat to return to normal compressor DELAY selection.
MOUNTING & BATTERY INSTALLATION Mount Thermostat Align the 4 tabs on the subbase with corresponding slots on the back of the thermostat, then push gently until the thermostat snaps in place. Set At Room Cool SYSTEM AUTO COOL HEAT Battery Installation Battery Installation is optional if thermostat is hardwired (C terminal connected).
SPECIFICATIONS The display range of temperature..41°F to 95°F (5°C to 35°C) The control range of temperature ..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 Swing (cycle rate or 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........18to30VAC,NECClassII,50/60Hzforhardwire(commonwire) Battery power from 2 AAA Alkaline batteries...
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Customer Service +1.800.304.6563 Technical Service +1.800.445.8299 Use Phone Year HVACCustomerService@robertshaw.com to Scan for Limited www.robertshaw.com • 352-00301-001 Warranty Info Warranty...
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