Installation Guide TH3110D Non-programmable Digital Thermostat
Product Application This thermostat provides electronic control of 24 VAC single-stage heating and cooling systems, or 750 mV heating systems.
PRO TH3110D Non-programmable Digital Thermostat Table of contents Installation Pre-installation checklist ................2 Wallplate installation ......................3 Wiring..............................................4 Wiring diagrams ..............................5 Appendices Quick reference to controls..........10 Quick reference to display............10 Compressor protection ................10 In case of difficulty ......................11 Accessories....................................
Installation Guide Pre-installation checklist Package contents Check to make sure your package includes the following items: • PRO TH3110D digital thermostat (wallplate attached to back) • Operating manual • Wall anchors and mounting screws (2 each) • AA alkaline batteries (2) Required tools & supplies • No.
PRO TH3110D Non-programmable Digital Thermostat Wallplate installation Remove the wallplate from the thermostat as shown at left, then follow directions below for mounting. Grasp top and bottom of wallplate and pull to remove from thermostat. 1 Pull wires through wire hole. 2 Position wallplate on wall, level and mark hole positions with pencil. 3 Drill holes at marked positions as shown below, then tap in supplied wall anchors. 4 Place wallplate over anchors, insert and tighten mounting screws.
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 retighten screws. 2 Push excess wire back into the wall opening. Keep wires in shaded area as shown at left. Jumper 3 Plug the wall opening with nonflammable insulation to prevent drafts from affecting thermostat operation.
PRO TH3110D Non-programmable Digital Thermostat Wiring diagrams 1 Power supply. Provide disconnect means and overload protection as required. 2 Factory-installed jumper. Remove for 2-transformer systems only. 3 Use either O or B terminals for changeover valve. 4 Use a small piece of wire (not supplied) to connect W and Y terminals. 5 Set fan operation switch to Heat Pump (see page 6) and configure for heat pump (see pg. 8). 6 Optional 24 VAC common connection.
Installation Guide Fan operation settings • Gas or Oil: 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.) • Electric or Heat Pump: Change the switch to this setting for heat pump or electric heat systems. (This setting is for systems that allow the thermostat to control the fan in a call for heat, if a fan wire is connected to the G terminal.
PRO TH3110D Non-programmable Digital Thermostat Power options & mounting AC Power The thermostat can be powered by 24 VAC power, or by batteries. To wire the thermostat for AC power, connect the common side of the cooling transformer to the “C” terminal as shown at left. Connect common side of transformer to “C” terminal Important: Remove R/Rc jumper for 2-transformer systems only. (See wiring diagram on page 5.
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.
PRO TH3110D Non-programmable Digital Thermostat Installer system test Follow the procedure below to test the heating and cooling system. System test number 10 System status 0 Test System switch 1 Set SYSTEM switch to Cool. 2 Press to turn on cooling system, then check system status (see table, below). 3 Press to turn off cooling system. 4 Set SYSTEM switch to Heat. 5 Press to turn on heating system, then check system status (see table, below). 6 Press to turn off heating system.
Installation Guide Quick reference to controls Digital display screen Temperature buttons Press to adjust temperature settings System switch Fan switch On: Fan runs continuously. Auto: Fan runs only when heating or cooling system is on. • Cool: Thermostat controls only the cooling system. • Heat: Thermostat controls only the heating system. • Off: Heating and cooling systems are off.
PRO TH3110D Non-programmable Digital 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 Temperature settings do not change • Check circuit breaker and reset if necessary. • Make sure heating & cooling power switches are on. • Make sure equipment door is securely closed. • If battery powered, make sure fresh AA alkaline batteries are installed.
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 • Heat: 40° to 90°F (4.5° to 32°C) • Cool: 50° to 99°F (10° to 37°C) Electrical Ratings Operating Ambient Temperature • 32° to 120°F (0° to 48.9°C) Heating 20-30 Vac 0.02-1.0 A (Powerpile) 750 mV DC 100 mA DC Cooling 20-30 Vac 0.02-1.
Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 http://yourhome.honeywell.com Printed in U.S.A. on recycled paper containing at least 10% post-consumer paper fibers. ® U.S. Registered Trademark. © 2005 Honeywell International Inc. Patents pending. All rights reserved.
