Honeywell T8195B User's Manual
Contents
1. Honeywell International Inc Honeywell Limited Honeywell Limit e 1985 Douglas Drive North 35 Dynamic Drive Golden Valley MN 55422 Scarborough Ontario 479 Printed in U S A on recycled paper containing at least 10 post consumer paper fibers Honeywell2. OUTLET BOX WALLPLATE MOUNTING SCREWS 2 M1554A ACCESSORY PARTS AVAILABLE 69 0564 3 Fig 5 Methods of connecting terminals FOR STRAIGHT CONNECTION STRIP 5 16 in 8 mm FOR WRAPAROUND CONNECTION STRIP 7 16 in 11 mm BARRIER M1556B TABLE 2 TERMINAL DESIGNATIONS Subbase Control Terminal Function Control transformer power Heating control circuit Cooling control circuit jumper to W for heat pump compressor control if no P terminal on subbase Fan control circuit Cooling damper or changeover reversing valve makes continuously in cool Heating damper or changeover reversing valve makes continuously in heat Clock control transformer common The timer is powered by the system low voltage trans former 24 Vac must be maintained across terminals R and C Push excess wire back into the wall Plug the hole in wall with nonhardening caulk putty or nonflammable insulation to prevent drafts from affecting thermostat operation MOUNT THE THERMOSTAT Note the tabs on the top inside edge of the thermostat base These tabs fit the slots molded into the top of the wallplate or subbase Hang the thermostat base on the wallplate or subbase Insert the two captive mounting screws located in the bottom corners of the base Fig 6 Firmly tighten the screws INSERT TIMER BATTERIES OPTIONAL Power is supplied to the clock by the 24 Vac transform
3. LEVER Ai Checkout CAUTION Do not check operation by shorting across termi nals of system controls This will damage the heat anticipator HEATING ONLY SYSTEM Turn on power to the furnace Push both temperature setting levers together at least 5 F 3 C above the room temperature The main burner should come on The fan will start when the furnace heats up Move both levers 5 F 3 C below the room tempera ture The burner should shut off Operate the entire heating system at least one complete cycle If thermostat fails any test refer to the Troubleshooting Guide in the Owner s Manual Reset both the temperature setting levers to the desired temperatures 69 0564 3 COOLING ONLY SYSTEM Turn on power to the cooling equipment Push both temperature setting levers together at least 5 F 3 C below the room temperature The cooling equipment will operate and the fan will start Allow for any time delay that may be built into the compressor control circuit NOTE To avoid compressor damage do not operate the system when outdoor temperature is below 50 F 10 C Refer to manufacturer recommendations Move both levers 5 F 3 C above room temperature The cooling equipment and the fan should shut off Operate the entire cooling system at least one complete cycle If thermostat fails any test refer to the Troubleshooting Guide in the Owner s Manual Reset both the temperature set
4. 0564 3 Fig 1 Unpack thermostat CAPTIVE MOUNTING SCREWS THERMOSTAT THERMOSTAT BASE REMOVE PACKING MATERIAL M8605 Drill 3 16 in holes and gently tap anchors into holes until flush with the wall Pull wires through the large wiring hole in the wallplate or subbase Loosely fasten the wallplate or subbase to the wall with the three screws Do not completely tighten the screws Carefully level the wallplate or subbase Fig 3 and firmly tighten the screws Fig 2 Mounting wallplate or subbase to wall SCREW HOLES WITH PLASTIC ANCHORS A S HEATING COOLING SUBBASE M1552A 3 SCREW HOLES WITH PLASTIC ANCHORS pa 7 T S HEATING ONLY 27 WALLPLATE 857 Fig 3 Leveling methods for wallplate or subbase SPIRIT LEVEL PLUMB BOB OR WEIGHT M1555 Outlet Box Mounting Fig 4 Use a horizontally mounted outlet box if possible If a vertical outlet box is used mount the wallplate or subbase on a 202689A Cover Plate Assembly ordered separately Fol low the instructions provided with the cover plate assembly Align the wallplate or subbase mounting holes on the outlet box and loosely fasten with two screws Carefully level the wallplate or subbase Fig 3 and firmly tighten the screws WIRE WALLPLATE OR SUBBASE Follow the instructions pro
5. Honeywell T8195B Q682B C Y8224A Heating or Cooling and Heating Cooling New Construction Thermostat Wallplate and Subbase Installation Instructions for the Trained Service Technician Preparation Check thermostat and subbase if used suitability for the heating cooling or heating cooling system Refer to Table 1 Assemble tools required flat bladed screwdriver hand or power drill with 3 16 in drill bit wire cutter stripper or sharp knife bubble level or plumb bob and line Assure power is off to the heating cooling or heating cooling system at the main fuse panel Most buildings have a separate switch box or circuit breaker for disconnecting power to the heating and cooling if applicable equipment This thermostat is compatible with most heating cooling or heating cooling systems Refer to Table 1 for thermostat Recycling Notice This control contains mercury in a sealed tube Do not place control in the trash at the end of its useful life If this control is replacing a control that contains mercury in a sealed tube do not place your old control in the trash Contact your local waste management authority for in structions regarding recycling and the proper disposal of this control or of an old control containing mercury in a sealed tube If you have questions call Honeywell Inc at 1 800 468 1502 and system compatibility information TABLE 1 THERMOSTAT AND SYSTEM COMPATIBILITY Conditions Co
6. er Two AAA alkaline backup batteries not included may be installed to supply power to the timer if power is interrupted due to power failure Install the batteries in the thermostat Fig 7 Once a year or when batteries are dead replace with two new AAA alkaline batteries We recommend Energizer batteries 69 0564 3 Fig 6 Thermostat mounting TAB 2 MOUNTING SLOT 2 T Y 0 ik Le Oe 1 WALLPLATE CAPTIVE MOUNTING SCREWS M8603 THERMOSTAT BASE OR SUBBASE Fig 7 Insert timer backup batteries BATTERY LOCATION FOR 2 AAA BATTERIES INSTALL WITH POSITIVE SET TIMER Adjust the clock by moving the knob clockwise CN Do not reverse the knob When time is correctly set the time indicator arrow triangle shape points to the corresponding daytime light or nighttime dark portion of the program dial ATTACH THERMOSTAT COVER Make sure the packing inserts in the thermostat base are removed Place the two tabs on the upper edge of the cover into the mounting slots in the thermostat base Fig 9 Swing the cover downward until it catches at the bot tom of the base Fig 8 Set timer PROGRAM PINS 4 SEE OWNER S MANUAL FOR DETAILS TIMER SETTING KNOB TIME INDICATOR ARROW M5161 SET TEMPERATURE CONTROL LEVERS The two levers on the top of the thermostat control the low and
7. high temperatures for energy savings and comfort control Fig 10 The lever on the left blue mark controls the lower temperature The lever on the right red mark controls the higher temperature We recommend pushing the levers together at an appro priate temperature for either heat or cool until the occupant programs the thermostat and makes the final temperature selections SET SUBBASE SWITCHES IF APPLICABLE The subbase system switch controls system operation as follows HEAT Heating system is controlled by the thermostat Cooling system is off COOL Cooling system is controlled by the thermostat Heating system is off OFF Both the heating and cooling systems are off If the fan switch is in the AUTO position the fan is also off The subbase fan switch controls fan operation as follows ON Fan operates continuously AUTO Fan operates with the cooling equipment as con trolled by the thermostat or with the heating equipment as controlled by the plenum switch In electric heat heat pump and fan coil systems the fan is controlled by the thermostat in heating and cooling To switch positions use thumb or index finger to slide lever to the desired position For proper circuit operation switch lever must stop in detent over the desired function indicator mark Fi g 9 Attach cover M8604 Fig 10 Temperature control levers LOW TEMPERATURE HIGH TEMPERATURE BLUE MARK RED MARK SET LEVER SET
8. ircuit 4 Check control amperage requirement e Most are compatible Tf thermostat is not compatible with the system being controlled the system will not operate No hazard exists The thermo stat will not be damaged unless it is used to directly control a line voltage system For proper system operation a Honeywell R841 or R8239D1015 Isolating Relay must be added to the thermostat control circuit gt Consult manufacturer for installation requirements Warm Air Zone D F Rev 11 94 Honeywell Inc 1994 Form Number 69 0564 3 Installation WHEN INSTALLING THIS PRODUCT 1 Read these instructions carefully Failure to follow them could cause a hazardous condition 2 Installer must be a trained experienced service technician 3 After installation is complete check out product op eration as provided in these instructions IMPORTANT incorrectly leveled subbase will cause the temperature control to deviate from setpoint It is not a calibration problem CAUTION 1 Disconnect power supply to prevent electrical shock or equipment damage 2 Toprevent interference with the thermostat link age keep wire length to a minimum and run wires as close as possible to the subbase 3 Do not overtighten thermostat captive mount ing screws because damage to subbase threads can result 4 Donot short across coil terminals on relay This can burn out the thermostat heat anticipator LOCATION Loca
9. mpatibility e The R8239D1015 Isolating Relay or R841 Silent Switching Center must be installed in the thermostat control circuit Type of Heating System to be Controlled Electric Line Voltage typical baseboard and radiant Fan Coil Unit Gas Direct Spark Ignition DSI Intermittent Pilot IP and Standing Pilot SP Heat Pump Compatible Assure correct subbase identity is selected for fan control Compatible Assure that 24V control transformer common is accessible for connection to thermostat cable conductor and power to the transformer is not regularly interrupted by high temperature or limit operation Compatible Assure correct subbase identity is selected for fan control and changeover control O terminal for cool and B terminal for heat Jumper Y to W for heat pump compressor control Hot Water Zone Honeywell 2 wire valves are compatible Some non Honeywell 2 wire valves require an R8239D 1015 Isolating Relay in the thermostat control circuit Some 3 wire valves require an R8239A 1052 Isolating Relay in the thermostat control circuit gt Assure that the 24V control transformer common is accessible for connection to thermostat cable conductor and power to the transformer is not regularly interrupted by high temperature purge cycle or limit operation Vent Damper Honeywell damper motors are compatible Some non Honeywell damper motors require an R8239D1015 Isolating Relay in the thermostat control c
10. o the Troubleshooting Guide in the Owner s Manual Reset both the temperature setting levers to the desired temperatures Leave Owner s Manual and Assistance Information in convenient place for the building occupant or provide with other appliance manuals Typical Wiring Diagrams Follow the hookup diagram supplied with your heating cooling or heating cooling equipment If not available use Figs 11 through 13 as a guide REMEMBER Your wiring must follow local electrical codes and ordinances Fig 11 Typical hookup for T8195B Thermo stat and Q682C Wallplate in gas heating control system THERMOSTAT HEAT ANTICIPATOR Ww GAS CONTROL WALLPLATE A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED Fig 12 Typical hookup for T8195B Thermostat Q682B Subbase in conventional heating cooling system THERMOSTAT HEAT COOL ANTICIPATOR SUBBASE FILTER LED COOLING A RELAY 1 12 A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED AA REMOTE INDICATION FOR FILTER OPTIONAL THERMOSTAT HEAT ANTICIPATORS COOL ANTICIPATORS SUBBASE SWITCH AY Le A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 7 69 0564 3 Automation and Control Solutions
11. te thermostat about 5 ft 1 5m above the floor in an area with good air circulation at average temperature Do not mount the thermostat where it may be affected by drafts or dead spots behind doors and in corners hot or cold air from ducts radiant heat from the sun or appliances concealed pipes and chimneys unheated uncooled areas such as an outside wall behind the thermostat Run wires from the heating cooling or heating cooling equipment to the new thermostat location IMPORTANT This control requires an additional con ductor to the control transformer common e g a typical 2 wire heating system requires three wires be pulled a 4 wire heating cooling requires five wires UNPACK THERMOSTAT Handle your new thermostat carefully rough handling may interfere with its accuracy Before unpacking refer to Fig 1 Remove and discard the shipping wrap IMPORTANT Save package of screws and instructions for the homeowner Remove the thermostat cover by lifting from the bottom Set aside cover until needed later Carefully remove the material protecting the mercury switch bulb Loosen two captive mounting screws and separate wall plate if provided from back of thermostat base MOUNT WALLPLATE OR SUBBASE Wall Mounting Fig 2 Hold the wallplate or subbase in position on wall Fig 2 Mark holes on the wall for anchors Use spirit level to make sure the wallplate or subbase is level 69
12. ting levers to the desired temperatures HEATING COOLING SYSTEM Turn on power to the furnace and cooling system Place the system switch lever to HEAT and fan switch lever to AUTO Push both temperature setting levers together at least 5 F 3 C above room temperature The main burner should come on The fan will start when the furnace heats up If central electric heat fan coil or heat pump system fan starts immediately Move both levers 5 F 3 C below room temperature The burner should shut off Place the system switch lever to COOL and the fan switch lever to AUTO The cooling equipment will operate and the fan will start Allow for any time delay that may be built into the compressor control circuit NOTE To avoid compressor damage do not operate the system when outdoor temperature is below 50 F 10 Refer to manufacturer recommendations Move both temperature setting levers together at least 5 F 3 C above the room temperature The cooling equip ment should shut off Place the fan switch to ON The fan should run continu ously with the system switch in any position Place the system switch to OFF Move both temperature setting levers to various positions The heating and cooling systems should not operate 69 0564 3 Operate the entire system for at least one complete cycle with the system switch at COOL and one complete cycle with the switch at HEAT If thermostat fails any test refer t
13. vided by the heating cooling or heating cooling equipment manufacturer If not available refer to the Typical Wiring Diagrams section at the end of this publication Disconnect the power supply before making wiring con nections to prevent electrical shock or equipment damage NOTE All wiring must comply with local electrical codes and ordinances Wallplate Heating or Cooling Systems Refer to Fig 5 and strip the thermostat wire insulation as necessary For heating only systems connect wires to R W and C terminals For cooling only systems connect wires R Y and C terminals Firmly tighten the screws The system low voltage transformer powers the timer Fig 11 Push excess wire back into the wall Plug the hole in the wall with nonhardening caulk putty or nonflammable insulation to prevent drafts from affecting thermostat operation Subbase Heating Cooling Systems Refer to Fig 5 and strip the thermostat wire insulation as necessary Connect the wires to the corresponding terminals on the subbase If labels do not agree with your new subbase refer to Table 2 and the installation instructions furnished with the subbase Fig 4 Mounting wallplate or subbase on horizontal outlet box EXISTING HORIZONTAL OUTLET BOX HEATING COOLING SUBBASE M1553A VERTICAL OUTLET A AL D SUBBASE OR WALLPLATE A NOT INCLUDED WITH UNIT ADAPTER RING EXISTING HORIZONTAL
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