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Honeywell Q682B Manual

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SUPER TRADELINE
Heating, Cooling, and Heating-Cooling
Thermostat, Wallplate and Subbase
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 all heating, cooling or
heating/cooling systems when thermostat is powered by bat-
teries. If the thermostat is not powered by batteries, refer to
Table 1 for thermostat and system compatibility information.
TABLE 1—SYSTEM COMPATIBILITY FOR NON-BATTERY POWERED THERMOSTATS.
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
Hot Water Zone
Oil
Vent Damper
Warm Air Zone
a
If thermostat is not compatible with the system being controlled, the system will not operate. No hazard exists. The
thermostat 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.
b
Consult manufacturer for installation requirements.
®
Installation Instructions for the Trained Service Technician.
Preparation
• The R8239D1015 Isolating Relay or R841 Silent Switching
Center must be installed in the thermostat control circuit.
• Compatible. Assure correct subbase identity selected for fan
control.
• Compatible. If not using battery backup, 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).
• Honeywell 2-wire valves are compatible.
• Some non-Honeywell 2-wire valves require an R8239D1015
Isolating Relay in the thermostat control circuit.
• Some 3-wire valves require an R8239A1052 Isolating Relay in
the thermostat control circuit.
• If not using battery backup, assure that the 24V control
transformer common is accessible for connection to thermostat
cable conductor and power to transformer is not regularly
interrupted by high temperature, purge cycle, or limit operation.
• Honeywell damper motors are compatible.
• Some non-Honeywell damper motors require an R8239D1015
Isolating Relay in the thermostat control circuit.
amperage requirement.
• Most are compatible.
D.F. • Rev. 9-94 •
T8090A/Q682B
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.
Conditions/Compatibility
a, b
1
• ©Honeywell Inc. 1994 • Form Number 69-0431—2
M3375
Recycling Notice
M3375
a
a
Check control
a
69-0431—2

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  Summary of Contents for Honeywell Q682B

  • Page 1 For proper system operation, a Honeywell R841 or R8239D1015 Isolating Relay must be added to the thermostat control circuit. Consult manufacturer for installation requirements.
  • Page 2: Installation

    Installation Fig. 1—Unpack thermostat. WHEN INSTALLING THIS PRODUCT… THERMOSTAT COVER 1. Read these instructions carefully. Failure to follow them could cause a hazardous condition. 2. Check the ratings given in the instructions and on the product to make sure the product is suitable for your application.
  • Page 3: Wire Wallplate Or Subbase

    WIRE WALLPLATE OR SUBBASE Follow the instructions provided by the heating, cooling Fig. 3—Leveling methods for wallplate or subbase. or heating-cooling equipment manufacturer. If not avail- able, refer to Typical Wiring Diagrams section at the end of this publication. Disconnect power supply before making wiring connec- SPIRIT LEVEL tions to prevent electrical shock or equipment damage.
  • Page 4: Mount The Thermostat

    Connect the wires to corresponding terminals on the subbase. If labels do not agree with your new subbase, refer Fig 5.—Methods of connecting terminals. to Table 2, Figs. 21-22, and the installation instructions FOR STRAIGHT furnished with the subbase. CONNECTION— STRIP 5/16 in.
  • Page 5: Set Clock

    Fig. 7—Insert clock batteries. Fig. 8—Set clock. BATTERY LOCATION FOR (2) AAA BATTERIES; INSTALL WITH POSITIVE ENDS UP MINUTE HAND TIME INDICATOR ARROW M7188 M8561 SET CLOCK Adjust the clock by moving the minute hand in a clock- wise direction. Do NOT reverse the minute hand. Let the system operate for one minute.
  • Page 6 ATTACH THERMOSTAT COVER The subbase fan switch controls fan operation as follows: Make sure the packing inserts in the thermostat base are ON: Fan operates continuously. removed. AUTO: Fan operates with cooling equipment as con- Place the two tabs on the upper edge of the cover into the trolled by the thermostat or with the heating equip- mounting slots in the thermostat base (Fig.
  • Page 7 Push both temperature setting levers together at least 5° F THERMOSTAT [3° C] above room temperature. The main burner should This thermostat was calibrated at the factory and should come on. The fan will start when the furnace heats up. (If not need recalibration in the field.
  • Page 8: Typical Wiring Diagrams

    Typical Wiring Diagrams Fig. 17—Typical hookup for clock powered by system transformer. Clock powered by battery when system is not powered (e.g., power to system is off or interrupted). Fig. 15—Typical hookup for clock powered by separate 24 Vac transformer. CLOCK CLOCK BATTERY...
  • Page 9 Fig. 19—Typical hookup for clock powered through control system. Clock powered by battery when heating or cooling equipment is on; clock takes power from system when cooling equipment is off. THERMOSTAT CLOCK BATTERY SUBBASE HEAT RELAY (HOT) COMPRESSOR CONTACTOR (HOT) POWER SUPPLY.
  • Page 10 Fig. 21—Internal schematic and typical hookup for T8090A Thermostat/Q682B Subbase in heating- cooling system; auto fan on call for heating or cooling. CLOCK HEAT ANTICIPATOR HEAT FALL T8090A FALL ANTICIPATOR THERMOSTAT COOL ANTICIPATOR SYSTEM SWITCH Q682B SUBBASE SWITCH HEAT COOL...
  • Page 11 Fig. 22—Internal schematic and typical hookup for T8090A Thermostat/Q682B Subbase with R and R terminals jumpered for single transformer system; O and B terminals connected for control of dampers or changeover valves. CLOCK T8090A FALL FALL THERMOSTAT HEAT ANTICIPATOR HEAT...
  • Page 12 Automation and Control Solutions Honeywell International Inc. Honeywell Limited—Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422-4386 Scarborough, Ontario M1V 4Z9...

This manual is also suitable for:

T8090a