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Honeywell 191108AJ Installation Instructions Manual

Heating/cooling thermostat/subbase/wallplate
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T8190A/191108AJ Heating or Cooling
Thermostat/Wallplate; T8190A/Q682B
Heating/Cooling Thermostat/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
batteries. If 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 is 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 the 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.
1
D.F. • Rev. 12-94 •
NOTE: Order Q682B Subbase separately.
Recycling Notice
M3375
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
• ©Honeywell Inc. 1994 • Form Number 69-0642—1
M3375
a
a
a
Check control
69-0642—1

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  Summary of Contents for Honeywell 191108AJ

  • Page 1 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.
  • Page 2: Installation

    4. Do not short across coil terminals on relay. This can burn out the thermostat heat anticipator. LOCATION Locate 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: —...
  • Page 3 HEAT NOTE: All wiring must comply with local electrical codes and ordinances. This thermostat clock can be powered by a 24 Vac trans- former with battery backup. Refer to Figs. 15 through 19 for hookup diagrams of typical powering applications.
  • Page 4: Control Function

    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.
  • Page 5: Set Timer

    Proceed with the following steps. Remove the thermostat from the wallplate or subbase. Connect an ac ammeter of appropriate range (about 0A to 2A) between the R and W terminals on the wallplate or subbase, except for electric heat and heat pump systems.
  • Page 6 Fig. 11—Attach cover. SET TEMPERATURE CONTROL LEVERS The two levers on the top of the thermostat control the low and high temperatures for energy savings and comfort con- trol (Fig. 12). The lever on the left (blue mark) controls the lower temperature.
  • Page 7 1. Remove the thermostat cover by pulling up from the bottom of cover until it clears the mounting slots. 2. Set the thermostat cover on a table near an accurate thermometer. 3. Allow five minutes for cover thermometer to sense area temperature;...
  • Page 8: Typical Wiring Diagrams

    Typical Wiring Diagrams Fig. 15—Typical hookup for timer powered by separate 24-Vac transformer. TIMER BATTERY THERMOSTAT SUBBASE (HOT) (HOT) POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. BATTERY BACKUP MAY BE USED IF POWER TO TIMER IS INTERRUPTED.
  • Page 9 OVERLOAD PROTECTION AS REQUIRED. JUMPER RH-RC TERMINALS WHEN ONE TRANSFORMER POWERS BOTH HEATING AND COOLING. FOR POWER STEALING ON COOLING, JUMPER C-RC AND C-Y TERMINALS. Fig. 20—Internal schematic and typical hookup for T8190A Thermostat/191108AJ Wallplate in heating- only system. TIMER THERMOSTAT WALLPLATE (HOT) POWER SUPPLY.
  • Page 10 69-0642—1...
  • Page 11 69-0642—1...
  • Page 12 Home and Building Control Home and Building Control Honeywell Inc. Honeywell Limited—Honeywell Limitée 1985 Douglas Drive North 740 Ellesmere Road Golden Valley, MN 55422 Scarborough, Ontario M1P 2V9 69-0642—1 Printed in Mexico Helping You Control Your World QUALITY IS KEY...

This manual is also suitable for:

Q682bT8190a