PRO TH4110B Programmable Thermostat Table of contents I I n n s s t t a a l l l l a a t t i i o o n n A A p p p p e e n n d d i i c c e e s s Pre-installation checklist ....2...
Installation Guide Pre-installation checklist Package contents Check to make sure your package includes the following items: PRO TH4110B Operating manual digital thermostat (wallplate attached to back) Wall anchors and AA alkaline Quick reference card mounting screws batteries (2) (2 each) Required tools &...
PRO TH4110B Programmable Thermostat Wallplate installation Grasp top and bottom of wallplate Remove the wallplate from the ther- and pull to remove from thermostat. mostat as shown at left, then follow directions below for mounting. 1 Pull wires through wire hole.
Installation Guide Wiring CAUTION: ELECTRICAL HAZARD. Can cause electrical shock or equipment damage. Disconnect power before wiring. Wiring Keep wires in this shaded area 1 Loosen screw terminals, insert wires into terminal block, then Jumper re-tighten screws. 2 Push excess wire back into the wall opening.
PRO TH4110B 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.
Installation Guide Fan operation settings • G G a a s s o o r r O O i i l l : : For gas or oil heating systems, leave the fan operation switch in this factory-set position (This setting is for systems that control the fan in a call for heat.) •...
PRO TH4110B Programmable Thermostat Battery installation Install two AA alkaline batteries in the back of the thermostat, as shown at left. Fresh batteries should be installed immediately when the R R E E P P L L A A C C E E B B A A T T T T warning begins flashing (see page 10.)
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 Function number Setting Setup To begin, press and hold the Press to change settings buttons until the display changes Press...
PRO TH4110B Programmable Thermostat Installer system test Follow the procedure below to test the heating and cooling system. System test number System status Test System switch 1 Set S S Y Y S S T T E E M M switch to Cool.
Installation Guide Quick reference to controls Digital display screen Temperature adjustment • Set: Press to set time/day/ schedule • Hold: Press to override programmed temperature control • Run: Press to resume program schedule System switch • Cool: Thermostat controls only the cooling system.
PRO TH4110B Programmable Thermostat 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 • Make sure fresh AA alkaline batteries are correctly installed (see page 7).
Installation Guide 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 Electrical Ratings • Heat: 40° to 90°F (4.5° to 32°C) • Cool: 50° to 99°F (10° to 37°C) System Voltage (50/60Hz) Running Current...