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Honeywell Q682B Application Manual

Switching subbases
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Subbase
Use with Thermostat
Q682B
T8082A; T8085A,B,C;
T8090A, T8095, T8190
Q682D
T8082A; T8085A,B,C;
T8090A, T8095, T8190
Q682L
T8085R
WHEN INSTALLING THIS PRODUCT
1. Read these instructions carefully. Failure to follow
them could damage the product or 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.
3. Installer must be a trained, experienced service tech-
nician.
4. After installation is complete, check out product
operation as provided in these instructions.
CAUTION
1. Disconnect power supply to prevent electrical
shock or equipment damage.
2. On systems using a low-voltage gas valve,
never apply a jumper across valve coil terminals.
This may burn out thermostat heat anticipator.
IMPORTANT:
1. T8082, T8085, T8090, T8190 and T8095 Fuel Saver
Thermostats are mounted at true level when cali-
brated at the factory. An inaccurately leveled sub-
base will cause the temperature control to deviate
from set point.
2. Refer to thermostat Owner Manual for complete
installation instructions.
LOCATION
Locate the subbase about 5 ft. [1.5m] above the floor in
an area with good air circulation at average temperature.
Do not mount the subbase where the thermostat may be
affected by:
— drafts, or dead spots behind doors and in corners.
— hot or cold air from ducts.
— radiant heat from the sun, appliances or fireplace.
— concealed pipes and chimneys.
— unheated (uncooled) areas, such as an outside wall
behind the thermostat.
Q682B,D,L Switching Subbases
System
HEAT-OFF-
COOL
ON-OFF or
AUTO-OFF
EM.HT.-HEAT-
OFF-COOL
Installation
J. H. • Rev. 4-94 • ©Honeywell Inc. 1994 • Form Number 60-1179—7
Switching
Fan
AUTO-ON
AUTO-ON
AUTO-ON
MOUNTING
1. If replacing an existing thermostat, remove thermo-
stat and wallplate or subbase. To avoid miswiring, label
wires with the letter or number of each terminal as it is
disconnected. Be sure insulation on thermostat wires is in
good condition (not cracked, worn or frayed). Replace
wires if necessary.
If a new installation, prepare an opening for the thermo-
stat wires, run wires and pull about 3 in. [76 mm] through
the opening.
NOTE: Color-coded, 18-gauge thermostat cable (Under-
writers Laboratories Inc., approved limited energy safety
control wire) with one conductor to each wiring terminal
is recommended.
2. Use a spirit level for leveling the Q682 Switching
Subbase (Fig. 1) and mount to the wall with the three
screws provided. If mounting to a horizontal outlet box, use
the two machine screws furnished.
Fig. 1—Leveling the Q682 Switching Subbase.
PLUMB
LINE
PLUMB
BOB OR
WEIGHT
WIRING
Disconnect power supply before making wiring connec-
tions to prevent electrical shock or equipment damage.
All wiring must comply with local electrical codes and
ordinances.
1
Application
Application
LED Options
Heating/Cooling
Clogged Filter LED
Heating-only or
Cooling-only
Heat pump
EM.HT. and AUX.
R
G
FAN
ON
AUTO
None
HT. LEDs
SPIRIT LEVEL
O
B
W
Y
COOL
HEAT
OFF
M1555
60-1179—7

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  Summary of Contents for Honeywell Q682B

  • Page 1 — unheated (uncooled) areas, such as an outside wall tions to prevent electrical shock or equipment damage. behind the thermostat. All wiring must comply with local electrical codes and ordinances. J. H. • Rev. 4-94 • ©Honeywell Inc. 1994 • Form Number 60-1179—7 60-1179—7...
  • Page 2 M1556B COMPRESSOR CONTACTOR (HOT) The Q682B or D Subbase allows the T8082A or POWER SUPPLY. PROVIDE DISCONNECT MEANS AND T8085A,B,C Thermostat clock to be powered by the sys- OVERLOAD PROTECTION AS REQUIRED. tem transformer or separate 24 Vac transformer. The Q682B...
  • Page 3 M7185 JUMPER 1-Y FOR AUTO FAN WITH COOLING MODE ONLY. Fig. 6—Q682B Subbase with Fuel Saver Thermostat (T8195 shown) in a heating-cooling system with O and B terminals for damper motors or changeover valve, and optional filter indicator LED. COOL...
  • Page 4 Fig. 7—Q682B Subbase with Fuel Saver Thermostat (T8095 shown) showing separate heating and cooling circuits. COOL ANTICIPATORS CLOCK FUEL SAVER HEAT THERMOSTAT ANTICIPATOR HEAT FALL FALL ANTICIPATOR Q682B 3 POSITION SYSTEM SUBBASE SWITCH SWITCH HEATING COOLING CONTROL CONTROL CONTROL (HOT)
  • Page 5 Fig. 9—Q682B Subbase with Fuel Saver Fig. 10—Q682B Subbase with Fuel Saver Thermostat (T8090 shown) in a typical single- Thermostat (T8090 shown) in a typical stage heat pump circuit. cooling-only circuit. ADD JUMPER Q682B SUBBASE Q682B SUBBASE HEAT PUMP REVERSING...
  • Page 6 Fig. 12—Q682D Subbase with Fuel Saver Thermostat (T8090 shown) in a typical cooling-only circuit. Fan must be connected to GC terminal. COOL ANTICIPATORS T8195A TIMER THERMOSTAT BLUE BIMETAL BIMETAL FALL HEAT FALL ANTICIPATOR HEAT ANTICIPATOR SWITCH Q682D SUBBASE SYSTEM SWITCH COOL FAN COOLING CONTROL...
  • Page 7: Operation And Checkout

    SET SUBBASE SWITCHES Operation and Checkout System switching positions control thermostat opera- tion as follows: Check the operation of the system as follows: EM.HT.—The emergency heat relay is energized. The 1. Place the subbase system switch at HEAT, ON or cooling system is off and the compressor is de- AUTO, and the fan switch at AUTO.
  • Page 8 Home and Building Control Home and Building Control Helping You Control Your World Honeywell Inc. Honeywell Limited—Honeywell Limitée 1985 Douglas Drive North 740 Ellesmere Road Golden Valley, MN 55422 Scarborough, Ontario M1P 2V9 QUALITY IS KEY 60-1179—7 Printed in U.S.A.

This manual is also suitable for:

Q682dQ682l