Honeywell Q682B, 191108AJ User Manual

T8190A/191108AJ Heating or Cooling

Thermostat/Wallplate; T8190A/Q682B

Heating/Cooling Thermostat/Sub base

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 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 Conditions/Compatibility

Electric (Line Voltage)—typical baseboard and radiant

Fan Coil Unit • Compatible. Assure correct subbase identity is selected for fan

Gas—Direct Spark Ignition (DSI), Intermittent Pilot (IP), and Standing Pilot (SP)

Heat Pump • Compatible. Assure correct subbase identity is selected for

Hot Water Zone • Honeywell 2-wire valves are compatible.

Oil • If not using battery backup, assure that the 24V control transformer

Vent Damper • Honeywell damper motors are compatible.

Warm Air Zone • Most are compatible.

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.

Consult manufacturer for installation requirements.

• The R8239D1015 Isolating Relay or R841 Silent Switching Center must be installed in the thermostat control circuit.

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.

fan control and changeover control (O terminal for cool and B terminal for heat).

• 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.

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.

• Some non-Honeywell damper motors require an R8239D1015 Isolating Relay in the thermostat control circuit.a Check control amperage requirement.

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 instructions 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 1-800468-1502.

a, b

D.F. • Rev. 12-94 • • ©Honeywell Inc. 1994 • Form Number 69-0642—1

1 69-0642—1

M3375

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: An 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. To prevent interference with the thermostat linkage, keep wire length to a minimum and run wires as close as possible to the subbase.

3. Do not overtighten thermostat captive mounting screws because damage to subbase threads can result.

4. Do not short across coil terminals on relay. This can burn out the thermostat heat anticipator.

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

wallplate (if provided) from back of thermostat base.

Fig. 1—Unpack thermostat.

CAPTIVE MOUNTING

LIFT COVER

SCREWS

9 8

35 30

THERMOSTAT COVER

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: — 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.

Refer to the Typical Wiring Diagrams section to deter-

mine the number of wires required for your application.

UNPACK THERMOSTAT

Handle your new thermostat carefully; rough handling may interfere with its accuracy. Before unpacking, refer to Fig. 1.

Fig. 2—Mounting wallplate or subbase to wall.

3 SCREW HOLES WITH PLASTIC ANCHORS

THERMOSTAT BASE

REMOVE PACKING MATERIAL

M8673

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.

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.

3 SCREW HOLES WITH PLASTIC ANCHORS

FAN

AUTO OFF

HEATING/COOLING SUBBASE

COOL

HEATON

M1552A

69-0642—1 2

WALLPLATE

M1815

Outlet Box Mounting (Fig. 4)

Fig. 3—Leveling methods for wallplate or

subbase.

Use a horizontally mounted outlet box if possible. If a vertical outlet box is used, mount the wallplate or subbase on a 193121A (beige) Cover Plate Assembly (ordered separately). Follow the instructions provided with the cover

SPIRIT LEVEL

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

PLUMB LINE

PLUMB BOB OR WEIGHT

FAN

AUTO OFF

HEATON

COOL

M1555

Fig. 4—Mounting wallplate or subbase on horizontal outlet box.

firmly tighten the screws.

WIRE WALLPLATE OR SUBBASE

Follow the instructions provided 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 connections to prevent electrical shock or equipment damage.

EXISTING HORIZONTAL OUTLET BOX

FAN

AUTO OFF

EXISTING HORIZONTAL OUTLET BOX

COOL

HEATON

HEATING/ COOLING SUBBASE

M1553A

VERTICAL OUTLET BOX

ADAPTER RING

COVER PLATE

WALLPLATE

M1816

SUBBASE OR WALLPLATE

NOT INCLUDED WITH UNIT.

ACCESSORY PARTS AVAILABLE.

NOTE: All wiring must comply with local electrical codes

and ordinances.

This thermostat clock can be powered by a 24 Vac transformer with battery backup. Refer to Figs. 15 through 19 for hookup diagrams of typical powering applications.

MOUNTING SCREWS (2)

M1554A

For 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 (if applicable) terminals (Fig. 20). For cooling-only systems, connect wires R, Y, and C (if applicable) terminals. Firmly tighten the screws.

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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.

Plug the hole in wall with nonhardening caulk, putty, or nonflammable insulation to prevent drafts from affecting the thermostat operation.

Subbase (Heating/Cooling Systems)

Fig. 5—Methods of connecting terminals.

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.

NOTE: If wiring a dual transformer system, only the O or

the B terminal may be used.

Push excess wire back into the wall.

TABLE 2—SUBBASE TERMINAL DESIGNATIONS.

Subbase Terminal Control Function

R Control transformer power. R

Line side of 24V power supply; cooling side, 2 transformer heat/cool system.

Line side of 24V power supply; heating side, 2 transformer heat/cool system. W Heating control circuit. Y Cooling control circuit; jumper to W for heat pump compressor control if no

P terminal on subbase. G Fan control circuit. C Clock control (transformer common). O Cooling damper or changeover/reversing valve, makes continuously in cool. B Heating damper or changeover/reversing valve, makes continuously in heat. P Heat pump contactor; P terminal on some models only.

FOR STRAIGHT CONNECTION— STRIP 5/16 in. [8 mm]

FOR WRAPAROUND CONNECTION— STRIP 7/16 in. [11 mm]

BARRIER

M1556B

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

Power is supplied to the clock by the 24 Vac transformer or two AAA alkaline batteries (included), or by the heating or cooling control circuit. Backup batteries may be installed to supply power to the clock if power is interrupted when using 24 Vac powering method.

Install the batteries in the thermostat (Fig. 7).

Once a year or when batteries are dead, replace with two new AAA alkaline batteries. Properly dispose of old batteries. We recommend Energizer® batteries.

Fig. 6—Thermostat mounting.

TAB (2)

MOUNTING SLOT (2)

35 30

THERMOSTAT BASE

WALLPLATE OR SUBBASE

CAPTIVE MOUNTING SCREWS

M8674

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