Installer setup...8 Installer system test ...8 Installation tips Install the thermostat about 5 feet (1.5m) above the floor in an area with good air circulation at average temperature. Do not install in locations where the thermostat can be affected by: •...
Installation Guide Pre-installation checklist Package contents Check to make sure your package includes the following items: • PRO TH4110D digital thermostat (wallplate attached to back) • Operating manual • Wall anchors and mounting screws (2 each) • AA alkaline batteries (2) •...
PRO TH4110D Programmable Thermostat Wallplate installation Grasp top and bottom of wallplate and pull to remove from thermostat. Drill 3/16” holes for drywall. Drill 7/32” holes for plaster. Wall anchors Remove the wallplate from the ther- mostat as shown at left, then follow directions below for mounting.
If wiring to a heat pump, use a small piece of wire (not supplied) to connect terminals W and Y. C terminal The C (common wire) terminal is optional when thermostat is powered by batteries. Wire specifications Use 18- to 22-gauge thermostat wire. Shielded cable is not required. Wiring...
PRO TH4110D Programmable Thermostat Wiring diagrams Power supply. Provide disconnect means and overload protection as required. Factory-installed jumper. Remove for 2-transformer systems only. Use either O or B terminals for changeover valve. Use a small piece of wire (not supplied) to connect W and Y terminals.
PRO TH4110D Programmable Thermostat Power options & mounting Connect common side of transformer to “C” terminal Install batteries in back of thermostat (optional if AC powered). AC Power The thermostat can be powered by 24 VAC power, or by batteries.
Installation Guide Installer setup Follow the procedure below to configure the thermostat to match the installed heating/cooling system, and customize feature operation as desired. Press and hold both buttons To begin, press and hold the buttons until the display changes...
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PRO TH4110D Programmable Thermostat Installer system test Follow the procedure below to test the heating and cooling system. System switch 1 Set S S Y Y S S T T E E M M switch to Cool. 2 Press to turn on cooling system, then check system status (see table, below).
Adaptive Intelligent Recovery Adaptive Intelligent Recovery eliminates guesswork when setting your schedule. It allows the thermostat to “learn” how long your furnace and air conditioner take to reach the temperature you want. Just set your program schedule to the time you want the house to reach your desired temperature.The thermostat then turns on the heating or cooling at just the...
PRO TH4110D Programmable Thermostat Quick reference to controls Temperature adjustment Fan switch On: Fan runs continuously. Auto: Fan runs only when heating or cooling system is on. Quick reference to display screen Low battery warning Current inside temperature Current program period...
Installation Guide In case of difficulty If you have difficulty with your thermostat, please try the suggestions below. Most problems can be corrected quickly and easily. Display is blank • Check circuit breaker and reset if necessary. • Make sure heating & cooling power switches are on.
PRO TH4110D Programmable Thermostat Accessories Please contact your distributor to order accessories. Cover plate assembly ...Part Number 50002883-001 (Used to cover marks left by old thermostats.) Specifications Temperature Ranges • Heat: 40° to 90°F (4.5° to 32°C) • Cool: 50° to 99°F (10° to 37°C) Operating Ambient Temperature •...
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