Installation Guide TH4210D Programmable Thermostat
Product Application This thermostat provides electronic control of 24 VAC heat pump systems with auxiliary heat (2 heat/1 cool). Power Type • Battery power • Common wire • Common wire with battery backup System Settings • Heat, Off, Cool, Em Heat Fan Settings • Auto, On Must be installed by a trained, experienced technician • Read these instructions carefully. Failure to follow these instructions can damage the product or cause a hazardous condition.
PRO TH4210D Programmable Thermostat Table of contents Installation Pre-installation checklist ................2 Wallplate installation ......................3 Wiring..............................................4 Wiring diagrams ..............................5 Appendices Adaptive Intelligent Recovery ........9 Compressor protection ..................9 Quick reference to controls..........10 Quick reference to display............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 TH4210D digital thermostat (wallplate attached to back) • Operating manual • Wall anchors and mounting screws (2 each) • AA alkaline batteries (2) • Quick reference card Required tools & supplies • No.
PRO TH4210D Programmable 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. 3 Plug the wall opening with nonflammable insulation to prevent drafts from affecting thermostat operation.
PRO TH4210D Programmable Thermostat Wiring diagram 1 Power supply. Provide disconnect means and overload protection as required. 2 Optional 24 VAC common connection. 3 Use either O or B terminals for changeover valve. 4 L terminal is powered continuously when thermostat is set to Em Heat. 5 Install field jumper between E and Aux if there is no emergency heat relay.
Installation Guide 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 transformer to the “C” terminal as shown at left. Connect common side of transformer to “C” terminal Battery Power The thermostat can be powered by batteries alone or, if used with AC power, can provide backup power. During power interruptions the batteries will save time/day settings and power the display.
PRO TH4210D Programmable Thermostat Installer setup Follow the procedure below to configure the thermostat to match the installed heating/cooling system, and customize feature operation as desired.
Installation Guide 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 Heat. 2 Press to turn on and check systems (see table, below). 3 Press until systems turn off. 4 Set SYSTEM switch to Em Heat and repeat steps 2-3 above. 5 Set SYSTEM switch to Cool and repeat steps 2-3 above. 5 Press and hold to terminate test at any time.
PRO TH4210D Programmable Thermostat Adaptive Intelligent Recovery™ (Setup Function 13) 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.
Installation Guide Quick reference to controls Temperature adjustment • Set: Press to set time/day/ schedule • Hold: Press to override programmed temperature control. • Run: Press to resume program schedule 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 TH4210D 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 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) Heat (1st stage) 20-30 Vac 0.02-1.0 A Emergency heat 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.
