Honeywell T7200, T7300, Q7300 User Manual

T7200, T7300 and Q7300

63-4038-7

Programmable Commer cial

Thermostats and Subbases

The T7200, T7300 Thermostats and Q7300 Subbases control commerical single zone heating, ventilating and air conditioning (HVAC) equipment.

■ One model can be used for single-stage and multi-

stage applications.

■ 7-day programming—two occupied/unoccupied

periods per day.

■ Individual temperature setpoints for:

—Occupied heat and cool.

—Unoccupied heat and cool.

■ Proportional plus integral control—eliminates temp-

erature fluctuations and thermostat tampering.

■ Intelligent Recovery™—automatically optimizes

start time depending on building load.

■ Intelligent Fan™—energizes fan on call for heating

or cooling only. Fan can be configured to run cont-

inuously in occupied mode.

■ Automatic heat/cool changeover.

■ Universal Versaguard™ Thermostat Guard avail-

able for T7200 and T7300/Q7300.

■ Locking setpoints and schedules eliminate tamp-

ering (use keyboard security).

■ One thermostat can be used for heat pump or con-

ventional control.

■ Optional remote sensors.

■ Configurable to vary fan and reversing valve operation.

■ Use with Q7300 to interface with C7400/W7459

Economizer System for total integration of rooftop control.

■ Convenient overrides allow temporary changes.

■ Battery backup saves program and maintains clock

time during power failure.

■ Auxiliary contacts available for use with economizer.

CONTENTS

Specifications ................................................ 2

Ordering Information.................................... 2

Recycling Notice............................................ 4

Installation .................................................... 4

Temperature Averaging Networks

(See Fig. 5-9) ........................................ 5

Set Q7300 Subbase DIP Switches............. 6

Set Thermostat DIP Switches.................... 9

Set Thermostat Mini-Jumper .................. 11

Program the Thermostat ............................. 12

Checkout...................................................... 13

Test Mode................................................ 13

Operation .................................................... 15

Cross Reference .......................................... 18

Wiring Diagrams......................................... 22

Troubleshooting .......................................... 45

J. A. • Rev. 12-95 • • ©Honeywell Inc. 1995

M3375

1 63-4038—7

T7200/T7300/Q7300 SPECIFICATIONS • ORDERING INFORMATION

Specifications

IMPORTANT: The specifications given in this publication

do not include normal manufacturing tolerances. Therefore, this unit may not exactly match the listed specifications. This product is tested and calibrated under closely controlled conditions, and some minor differences in performance can be expected if those conditions are changed.

• T7300A is a fully configurable programmable commercial thermostat to be used with a Q7300 Subbase.

• T7300B is a fully configurable programmable commercial thermostat with the 3-HOUR OVERRIDE key in the cover, to be used with a Q7300 Subbase. (See Fig. 2).

• T7300C is a fully configurable programmable commercial thermostat with limited access cover for easy programming. Cover includes Set Heat, Set Cool, Warmer,

T7200 AND T7300 THERMOSTATS

• T7200A is an autochangeover programmable commer-

Cooler and Occupied/Unoccupied keys. Use with Q7300 Subbase. (See Fig. 3).

cial thermostat to be used with a single stage conventional heat/cool system.

•T7200B is an autochangeov er programmable commercial

Q7300 SUBBASE

Q7300 Subbases provide features listed in Table 1.

thermostat to be used w ith a sing le stage heat pump system .

TABLE 1—Q7300 SUBBASE FEATURES.

Model System Switch

Q7300A Q7300B Heat-Off-Cool-Auto Auto-On 2 heat-1 cool; 2 heat-2 cool Q7300C Em. Ht.-Heat-Off-

Q7300D None 1 stage heat pump compressor with

Q7300E None Conventional 1 heat-1 cool; 2 heat-2 cool Q7300F None Aux. Ht. 1 stage heat pump compressor with

Q7300G Heat-Off-Cool-Auto None Conventional 1 stage heat with

Q7300L None Auto-On Heat Cool 2 stage heat (ML984 actuator/

a,b

None None None Conventional 1 heat-1 cool; 1 heat-2 cool

Cool-Auto

Select models do not have auxiliary relay output. The auxiliary relay output is used with an ecomonomizer for minimum

Fan

Switch LEDs Application Selectable Output

Em. Ht.,

Aux. Ht.

1 stage heat pump compressor with auxiliary heat

2 stage heat pump compressor with auxiliary heat

auxiliary heat 2 stage heat pump compressor with

auxiliary heat

auxiliary heat 2 stage heat pump compressor with

auxiliary heat

3-stage cool

V5013 Valve) 1 stage cool

1 heat-1 cool; 2 heat-1 cool

1 heat-1 cool; 2 heat-1 cool; 3 heat-1 cool

1 heat-1 cool; 2 heat-1 cool

1 heat-1 cool; 2 heat-1 cool; 3 heat-1 cool

1 heat-1 cool; 2 heat-1 cool

1 heat-1 cool; 2 heat-1 cool; 3 heat-1 cool

1 heat-3 cool (fixed)

1 heat-1 cool; 2 heat-1 cool

position control based on programmed time schedule. Can also be used for switching other external equipment.

Q7300A1000 model configures for 1 heat-1 cool only (fixed).

Uses conventional terminal designations. Compressor changeover is controlled by the heat pump equipment.

Ordering Information

When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the Tradeline Catalog or price sheets for complete ordering number, or specify—

1. Order number. 3. Order additional system components and system accessories

2. Accessories, if desired. separately.

If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:

1. Your local Home and Building Control Sales Office (please check the white pages of your phone directory).

2. Home and Building Control Customer Relations Honeywell, 1885 Douglas Drive North Minneapolis, Minnesota 55422-4386

In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9. International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

63-4038—7 2

THERMOSTAT

ELECTRICAL RATING: 24 to 30 Vac, 50/60 Hz. SYSTEM CURRENT DRAW: 6 VA maximum at 30 Vac,

50 or 60 Hz.

OUTPUT RELAY DRAW: See Table 2.

TABLE 2—MAXIMUM AMPS AT 30 VAC.

Relay Running (A) Inrush (A)

Fan 1.6 3.5 Heat 1.6 3.5 Cool 1.6 7.5

Auxillary (Economizer) 1.6 3.5

TEMPERATURE:

Ratings:

Ambient: 40°F to 110°F (4°C to 43°C). Shipping: -30°F to +150°F (-34°C to +65°C).

Display Accuracy: ±1°F (±1°C). Setpoint:

Range: 45°F to 95°F (7°C to 35°C). Differential: 2°F (1°C). Default Settings: See Table 3.

TABLE 3—DEFAULT SETPOINTS.

Control Occupied Unoccupied

Heating 68°F (20°C) 55°F (13°C) Cooling 78°F (26°C) 90°F (32°C)

T7200/T7300/Q7300

SPECIFICATIONS

Fig. 1—Thermostat and subbase dimensions in in. (mm).

8 (204)

(102)

FAN

EM. HEAT AUX. HEAT

ONAUTO COOLOFFHEATEM. HEAT

T7300/Q7300 ONLY.

Fig. 2—T7300B door.

OCCUPIED •

UNOCCUPIED •

CONT UNOC •

3 HR OCCUPIED •

ENVIRONMENTAL CONTROL

4-5/8 (118)

3 HOUR

OCCUPIED

1-3/4

(41)

M4404

M4421

REMOTE SENSOR WIRING TEMPERATURE OFFSET:

Temperature offset occurs with 500 ft (157m) to 1000 ft (305m) of 2-wire cable. See Table 4.

TABLE 4—TEMPERATURE OFFSET.

Temperature

Range 18 AWG 20 AWG 22 AWG

50-90°F -0.4°F -0.7°F -1.0°F 10-32°C -0.3°C -0.4°C -0.6°C

MINIMUM STAGE OPERATION TIME:

Conventional Heat: Two minutes On or Off. Compressor: Two minutes On and four minutes Off.

HUMIDITY RATINGS: 5% to 90% RH, noncondensing. CLOCK ACCURACY: ±1 minute per month. BATTERY BACKUP: Up to 60 hours with fresh 9-volt

alkaline battery. Mallory MN11604™ or equivalent.

FINISH: Beige thermostats with brown subbases or Premier

White™ thermostats with light gray subbases. DIMENSIONS: See Fig. 1. T7300 Doors: See Fig. 2. MOUNTING MEANS: T7200 Thermostat mounts on a

wallplate. The T7300 mounts on the Q7300 Subbase. The

Q7300 and wallplate mount horizontally on a wall or

outlet box with two no. 6 x 32 screws (included).

Fig. 3—T7300C door.

OCCUPIED •

UNOCCUPIED •

TO ADJUST HEAT PRESS SET HEAT THEN PRESS WARMER OR COOLER

TO ADJUST COOLING PRESS SET COOL THEN PRESS WARMER OR COOLER

FOR AFTER HOURS PRESS OCCUPIED UNOCCUPIED FOR BUSINESS HOURS PRESS OCCUPIED UNOCCUPIED AGAIN

SET SET

HEAT COOL

TO ACCESS FULLY PROGRAMMABLE TIME AND TEMPERATURE FEATURES LIFT COVER

ENVIRONMENTAL CONTROL

WARMER

COOLER

OCCUPIED

UNOCCUPIED

M4422

ACCESSORIES:

— 229997BU T7300B Conversion Kit. (See Fig. 2). — 229997BY T7300A Conversion Kit. (See cover photo). — 229997CE T7300C Conversion Kit. (See Fig. 3). — 231054AA White Door Assembly for T7300C. (See

Fig. 3.

— 231055AA White Door Assembly for T7300B. (See

Fig. 2).

— 231056AA White Door Assembly for T7300A. (See

cover photo).

— 4074EEP Hardware for door and hinge pin assembly.

3 63-4038—7

T7200/T7300/Q7300 SPECIFICATIONS • RECYCLING • INSTALLATION

— 4074EFS Bag Assembly (two sheet metal screws and

two machine screws).

— 4074EKA Bag Assembly (Allen wrench and four

Allen head screws). — 4074ENE Hinge Pin Assembly. — C7400 Enthalpy Sensor. —M7415 Damper Actuator. — T675A Temperature Control. — T7022A1010 Remote Temperature Sensor. — T7047C1025 Remote Temperature Sensor. — T7047G1000 Remote Temperature Sensor.

If this control is replacing a control that contains mer-

cury 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

— T7147A1002 Remote Temperature Sensor and Over-

ride Module.

— T7147A1010 Remote Temperature Sensor and Over-

ride Module.

— T7147A1028 Remote Temperature Sensor and Over-

ride Module. — R8222 Switching Relay. —W950A System Supervisor. —W859D Packaged Economizer. —W7459 Economizer Logic Module.

Recycling Notice

M3375

this control, or of an old control containing mercury in a sealed tube.

Installation

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 on the product to make sure the product is suitable for your application.

3. Installer must be a trained, experienced service technician.

4. Allow thermostat to warm to room temperature before operating.

5. After installation is complete, check out product operation as provided in these instructions.

CA UTION

Disconnect power supply before beginning installation to prevent electrical shock or equipment damage.

LOCATION Thermostat Without Remote-Mounted Temperature Sensor

Install the thermostat about 5 ft (1.5m) above the floor in an area with good air circulation at average temperature. See Fig. 4.

Do not mount the thermostat where it can be affected by:

— drafts or dead spots behind doors, in corners or under

cabinets. — hot or cold air from ducts. — radiant heat from the sun, fireplace, or appliances. — concealed pipes and chimneys. — unheated (uncooled) areas such as an outside wall

behind the thermostat.

Thermostat With Remote-Mounted Temperature Sensor(s)

Install the thermostat in an area that is accessible for

setting and adjusting the temperature and settings.

Install the remote-mounted sensor(s) about 5 ft (1.5m) above the floor in an area with good air circulation at average temperature. See Fig. 4.

Do not mount the sensor(s) where it can be affected by:

— drafts or dead spots behind doors, in corners or under

cabinets. — hot or cold air from ducts. — radiant heat from the sun, fireplace, or appliances. — concealed pipes and chimneys. — unheated (uncooled) areas such as an outside wall

behind the thermostat. If more than one remote sensor is required, they must be

arranged in a temperature averaging network consisting of two, three, four, five, or nine sensors. Instal as shown in Fig. 5-9.

REPLACE AN EXISTING THERMOSTAT OR NEW INSTALLATION Replace An Existing Thermostat

Turn off all sources of power for the thermostat. Re-

move any existing wallplate or subbase from the wall. To avoid miswiring later, label or write down each wire color with the letter or number on the wiring terminal as the wire is removed.

63-4038—7 4

Fig. 4—Location for installing thermostat or remote-mounted sensor.

YES

5 FEET

[1.5 METERS]

T7200/T7300/Q7300

INSTALLATION

M4385

Fig. 5—Two T7047G1000 Sensors providing a temperature averaging network for a T7300/ Q7300 Thermostat/Subbase.

Q7300

T7047G1000T7047G1000

M3421

Fig. 6—Two T7047C1025 and one T7047G1000 Sensors providing a temperature averaging network for a T7300/Q7300 Thermostat/Subbase.

Q7300

T7047C

T7047G1000

Fig. 7—Four T7047C1025 Sensors providing a temperature averaging network for a T7300/ Q7300 Thermostat /Subbase.

Q7300

T7047C

M3420

T7047C

M3418

5 63-4038—7

T7200/T7300/Q7300 INSTALLATION

Fig. 8—Five T7047G1000 Sensors providing a temperature averaging network for a T7300/ Q7300 Thermostat/Subbase.

Q7300

T7047G

M3422

Fig. 9—Nine T7047C1025 Sensors providing a temperature averaging network for a T7300/ Q7300 Thermostat/Subbase.

New Installation

Run cable to a hole at the selected wall location for the

thermostat and pull about 3 in. (76 mm) of wire through the opening. Color-coded, 18-gauge thermostat cable with at least one conductor for each wiring terminal is recommended. Good service practice recommends selecting a cable with one or two extra conductors than the immediate application requires.

If using remote temperature sensor(s) or LAN override

switch module, refer to the mounting instructions included with the device for wiring cable requirements. Route cable away from sources of electrical noise.

IMPORTANT: The remote sensor(s) or override switch

wires must be in a shielded cable if bundled or placed

in the same conduit with the cooling control wires.

Earth ground the shield at the thermostat.

SET Q7300 SUBBASE DIP SWITCHES

NOTE: Subbase dip switches are not available on the T7200

Wallplate. The Q7300 Subbase provides the T7300 Thermostat

with an interface to the single zone HVAC system. See Table 5 for DIP switch settings. The subbase DIP switches are located on the front and to the right of the wiring terminals. See Fig. 10. Set the DIP switches for the system being controlled.

T7047C

Q7300

T7047C

M3419

TABLE 5—SUBBASE DIP SWITCH SETTINGS.

Switch Setting Function

OFF 1 stage heat

ONb2 stage heat

OFF 1 stage cool

ONb2 stage cool

3 OFF Proportional control (allows droop)

ONbProportional plus integral (P+I)

control (droopless)

ONbEnergizes fan on cool only

OFF Energizes fan on heat and cool

5ONbUse internal sensor

OFF Use remote sensor

No effect on 1 heat/1 cool (Q7300A) or 1 heat/3 cool (Q7300G) models.

Factory setting.

No effect on heat pump systems.

MOUNT SUBBASE OR WALLPLATE

The subbase or wallplate can be mounted on a horizon-

tal outlet box or directly on the wall. For an outlet box installation, go to step 3.

63-4038—7 6

T7200/T7300/Q7300

INSTALLATION

1. For a wall installation, hold subbase or wallplate in position and mark holes for the anchors. See Fig. 4. Wall anchors must be obtained locally. Be careful that the wires do not fall back into the wall opening. Set aside subbase or wallplate.

Fig. 10—Setting subbase DIP switches.

BA3A2W2Y2TA1 T

GRCRH

LED1

CONFIGURATION OF ILLUSTRATED SWITCH IS: 1 – ON 2 – OFF 3 – OFF 4 – ON 5 – ON

CA1

LED2 COM

CA2 CA3 CA4 CA5

2. Drill four 3/16 in. (4.8 mm) holes and gently tap

anchors into the holes until flush with the wall.

3. Pull wires through the cable opening. See Fig. 11.

234

M4401

Fig. 11—Installing subbase on outlet box or on wall.

BA3A2W2Y2TA1 T

GRCRH

SHEET METAL SCREWS

MOUNTING TO WALL BOARD

CA2 CA3 CA4 CA5

CA1

LED2 COM

LED1

MACHINE SCREWS

BA3A2W2Y2TA1 T

GRCRH

MOUNTING TO HORIZONTAL 2 X 4 JUNCTION BOX

CA2 CA3 CA4 CA5

CA1

LED2 COM

LED1

M4410

7 63-4038—7

T7200/T7300/Q7300 INSTALLATION

4. Secure the subbase or wallplate with the screws provided. Do not fully tighten the screws.

5. Level the subbase or wallplate for appearance only. Leveling is not required for operation. Securely tighten the screws.

WIRE SUBBASE OR WALLPLATE

CA UTION

Never install more than one wire per terminal unless using factory-supplied jumper with spade terminal.

IMPORTANT: Most equipment manufacturers size system

transformers for the equipment installed at the factory. Before connection, be sure that the system transformer can supply the T7200 OR T7300 and Q7300 with adequate power (6 VA). If less than 6 VA is available, install a separate 24 Vac transformer.

CA UTION

Disconnect power supply before beginning installation to prevent electrical shock or equipment damage.

All wiring must comply with local electrical codes and

ordinances.

IMPORTANT: Use 18 gauge, solid-conductor wire when-

ever possible. If using 18 gauge stranded wire, no more than 10 wires can be used. Do not use larger than 18 gauge wire.

Follow equipment manufacturer’s wiring instructions when available. See Fig. 23-46 for wiring diagrams. To wire subbase, proceed as follows:

1. Connect the correct wires to the terminals as shown in applicable diagram; the terminal barrier allows straight or wraparound wiring connection. See Fig. 12. A letter code is located near each terminal for identification. Typical terminal designation and wiring connections are listed in Table

6. Connect remote temperature sensor or override switch module.

NOTE: If a remote sensor is used, be sure that the Q7300 DIP

switch 5 is placed in the OFF position.

Fig. 12—Barrier configuration. Keep wiring restricted to recessed area surrounding terminals.

FOR STRAIGHT INSERTION – STRIP 5/16 in. [8 mm]

FOR WRAPAROUND – RESTRICT WIRING TO THIS AREA

FRONT VIEW OF

TERMINAL AREA

WIRING TO BE BELOW THIS SURFACE

CROSS-SECTIONAL VIEW OF

TERMINAL AREA

STRIP 7/16 in. [11 mm]

TOP SURFACE OF SUBBASE

M3062

2. Firmly tighten each terminal screw. Loose or intermittent wire connections can cause inconsistent system operation.

3. Fit wires as close as possible to the subbase. Push excess wire back into the hole.

4. Plug hole with nonflammable insulation to prevent drafts from affecting the thermostat.

Refer to Fig. 23-46 for typical hookups. When system installation is complete, perform the initial power up procedure in the Checkout section.

63-4038—7 8

T7200/T7300/Q7300

TABLE 6—TERMINAL DESIGNATIONS.

Standard Terminal

Designation

BHeating damper motor; changeover valve/relay Output 24 Vac powered contact EKEmergency heat relay Output 24 Vac powered contact GFFan relay coil Output 24 Vac powered contact ORCooling damper motor; changeover valve/relay Output 24 Vac powered contact RVPower connection to transformer (internally

RC Power connection to cooling transformer Input RH Power connection to heating transformer Input W1 H1, R3 Stage 1 heating control Output 24 Vac powered contact W2 H2, Y, R4 Stage 2 heating control Output 24 Vac powered contact W3 Stage 3 heating control Output 24 Vac powered contact

Y1 C1, M Stage 1 cooling control Output 24 Vac powered contact

Y2 C2 Stage 2 cooling control Output 24 Vac powered contact

XX1,X2,C Common connection Input T

LED1,

LED2, COM

YMCompressor contactor

A1, A2, A3 Auxiliary relay Output Dry contact

CA1-CA5

Q7300G only.

Shielded cable can be required in some installations where electrical interference (noise) can cause control problems.

Alternate

Designations Or

Customer Specials Typical Connection Function Terminal Type

Input

connected for heating and cooling)

Stage 3 cooling control

Remote sensor

L, C, H HSII control panel

OMomentary circuit, changeover

A,A1,A2,Z,C,L LEDs Annunciation

TExternal temperature readout, T relay

R1, R2 LO and HI speed fan relays

RS Cooling contactor

Remote override

Output 24 Vac powered contact

Input

Input Low power

INSTALLATION

SET THERMOSTAT DIP SWITCHES

The thermostat DIP switches provide the thermostat with an interface to the single zone HVAC system. See Table 7 for DIP switch settings. The thermostat DIP switches are located on the back of the thermostat. See Fig. 13. Set the DIP switches for the desired thermostat features and the system being controlled.

IMPORTANT: The thermostat configuration must match

the application, or the control logic will not function properly.

TABLE 7—THERMOSTAT DIP SWITCH SETTINGS

Switch Setting Function

1ONa°F display

OFF °C display

2ONa12 hour clock display

OFF 24 hour clock display

3ON

a,b

Intermittent fan operation in occupied period

OFF Continuous fan operation in occupied

period 4 Nonfunctional switch 5ONaKeyboard is used for programming

OFF Keyboard disabled, but can be used to

review program, perform overrides

and make clock changes.

Factory setting.

Q7300B,C,D,E,L: fan switch will override this switch setting. Q7300A,F,G: no override is available.

9 63-4038—7

T7200/T7300/Q7300 INSTALLATION

Fig. 13—Setting thermostat DIP switches.

T7300 ONLY

HEAT PUMP CONV

12 HR. TIME

°F - TEMP

°C

12 HR. TIME

INT - FAN

234

CON

ON - KEYBD

OFF

°F - TEMP

234

°C

M4085A

Fig. 14—Setting thermostat mini-jumper for conventional or heat pump system.

T7300 ONLY

1 2

HEAT PUMP CONV

- KEYBD

INT - FAN

OFF

CON

ON - KEYBD

12 HR. TIME

INT - FAN

°F - TEMP

234

°C

OFF

CON

ONLY PUT MINI-JUMPER IN THIS POSITION WHEN USING Q7300C,D, OR F SUBBASES.

ONLY PUT MINI-JUMPER IN THIS POSITION WHEN USING Q7300A,B,E, OR G SUBBASES.

63-4038—7 10

12 HR. TIME

INT - FAN

°F - TEMP

ON - KEYBD

M4086A

BATTERY SNAPS

STEP 1:

STEP 2: STEP 3:

CONNECT THERMOSTAT CABLES TO THE SUBBASE. FIRST CONNECT THE 12 PIN THEN THE 9 PIN.

SNAP BATTERY INTO PLACE. SLIDE BATTERY UP TO THE

BATTERY CONNECTOR UNTIL CONNECTED.

M4408

T7200/T7300/Q7300

INSTALLATION

SET THERMOSTAT MINI-JUMPER

NOTE: This operation must be done prior to installing the

batteries. If batteries are installed prior to this operation, remove battery for 15 minutes and begin.

The T7300 is factory-set for conventional system control using the Q7300A,B,E,G. If using with a heat pump and Q7300C,D,F, locate the mini-jumper on the back of the T7300. See Fig. 14. Pull the mini-jumper off the two CONV pins and move to the two HEAT PUMP pins. This changes the thermostat to the heat pump algorithm.

If you wish to change the control of the thermostat because a new subbase has been purchased, remove battery for 15 minutes, change mini-jumper position, and re-install battery.

MOUNT THERMOSTAT

CA UTION

Always disconnect power supply and remove battery from the T7300 before connecting the ribbon cables to prevent electrical shock and equipment damage.

Use the following procedure to connect the T7300 ribbon cables to the Q7300.

1. Check that the 24 Vac power supply is disconnected

from the Q7300.

2. Check that the 9 Vdc battery is not installed in the

T7300.

INSTALL BATTERY (OPTIONAL)

The 9 volt battery is not necessary for the operation of the thermostat, but holds the program during power outages. When the power is restored, the system will resume normal operation. Without the battery, the system will follow the default setpoints. See Table 3. Use the following steps to install a battery:

1. Locate the battery holder on the back of the thermo-

stat.

2. Slide the battery up to the connector until it is firmly

seated. See Fig. 16. NOTE: Observe the polarity when snapping a 9 volt alkaline

battery into the holder. NOTE: The plugs must be firmly seated on the connectors

for the thermostat to work properly.

6. Hang the top edge of the thermostat on the subbase

hooks. See Fig. 17.

7. Swing down and press on the lower edge until the

thermostat snaps in place.

8. Insert and tighten three Allen head screws on the

bottom of the thermostat. See Fig. 17.

Fig. 16—Installing optional 9 volt battery.

IMPORTANT: First be sure to connect the 12 pin ribbon

cable to the Q7300.

3. Connect the 12 pin (larger) ribbon cable to the Q7300.

See Fig. 15.

4. Connect the 9 pin (smaller) ribbon cable to the Q7300.

5. If using a 9 Vdc battery, go to the Install Battery

Backup section for installation instructions.

Fig. 15—Connecting the pin ribbon cables to the subbase connectors.

9-PIN SUBBASE CONNECTOR

12-PIN SUBBASE CONNECTOR

M4403

Fig. 17—Mounting thermostat on subbase.

DO NOT OVERTIGHTEN SCREWS

M4391

11 63-4038—7

T7200/T7300/Q7300 PROGRAM THE THERMOSTAT

Program the Thermostat

OVERVIEW

The keyboard is located behind the thermostat flip-up cover. See Fig. 18. There are 16 keys to set, review and modify programmed times and temperatures. The liquid crystal display (LCD) shows day, time or temperature and which programming period is operating.

The thermostat can be set for two occupied and two unoccupied time and temperatures for each day of the week (28 independent settings). The two override keys provide quick temporary programming changes for increased occupant comfort.

IMPORTANT: To program the thermostat, 24 Vac is re-

quired (turn on system power) and the keyboard lockout switch (see Fig. 27) must be in the ON-KEYBD position.

Fig. 18—Thermostat programming keys and

LCD display.

OCCUPIED •

UNOCCUPIED •

3 HR OCCUPIED •

SET SET START TIME

CLOCK

DAY

CONT UNOC •

SELECT

DAY

COPY

11:32

OCCUPIED

START TIME

HEAT

SET TEMPERATURE DATA CHANGE

OCCUPIED

COOL

HEAT

UNOC

HEAT

COOL

DISPLAY

CLEAR

START TIME

OVERRIDE

3 HOUR

OCCUPIED

CONT

–

UNOC

NOTE: The programming times are in intervals of ten

minutes; i.e., 8:00, 8:10, 8:20.

1. Press the SELECT DAY key. The display shows the

abbreviation for a day.

2. Press and hold the + or - key until the desired day

appears.

3. Press the OCCUPIED START TIME key. The pro-

gram indicator will point to OCCUPIED.

4. Press and hold the + or - key until the desired start time

appears. NOTE: Anytime a start time is not required, press the

CLEAR START TIME key.

5. Press the UNOC START TIME key. The program

indicator will point to UNOCCUPIED.

6. Press and hold the + or - key until the desired start time

appears.

7. To program a second occupied start time for the selected day, repeat Step 3 until four dashes (----) are displayed or the second start time (if previously programmed) is displayed. Then repeat Step 4.

8. To program a second unoccupied start time for the selected day, repeat Step 5 until four dashes (----) are displayed or the second start time (if previously programmed) is displayed. Then repeat Step 6.

9. Repeat Steps 1 through 8 for each remaining day of the week or refer to the following section, COPY A DAY.

M4384

SET CURRENT TIME/DAY

1. Set the current time by pressing and releasing the

CLOCK key once.

2. Press the + or - key until the current time appears on the

LCD.

3. Set the current day by pressing and releasing the DAY

key once.

4. Press the + or - key until the current day appears on the

LCD. NOTE: Su=Sunday; Mo=Monday; Tu=Tuesday; We=

Wednesday; Th=Thursday; Fr=Friday; Sa=Saturday.

SET PROGRAM TIMES IMPORTANT: The thermostat will remain in occupied

mode from the point of initial programming until it encounters the first unoccupied start time. To avoid the unnecessary occupied period following initial programming, set a 12:00 AM unoccupied start time on the thermostat when programmed.

COPY A DAY

1. Press the SELECT DAY key. The display shows the abbreviation for a day.

2. Press and hold the + or - key until the day to be copied from appears.

3. Press the COPY key.

4. Press and hold the + or - key until the day to be copied to appears.

NOTE: The day to be copied from will remain on the display.

5. Press the COPY key a second time to perform the copy.

6. Repeat Steps 3 to 5 to copy to another day.

SET PROGRAM TEMPERATURE SETPOINTS

NOTE: The setpoint temperature range is 45°F (unoccupied

heat) to 95°F (unoccupied cool). The occupied heat setpoint must be at least 2°F less than the occupied cool setpoint.

1. Press the SET TEMPERATURE key (OCCUPIED

HEAT, OCCUPIED COOL, UNOC HEAT, or UNOC COOL). The program indicator will point to OCCUPIED or

UNOCCUPIED and the LCD will indicate HEAT or COOL.

63-4038—7 12

T7200/T7300/Q7300

PROGRAM THE THERMOSTAT • CHECKOUT

2. Press and hold the + or - key until the desired tempera-

ture appears.

3. Repeat Steps 1 and 2 until all four temperatures are set.

SET OPERATING DISPLAY

The LCD can show time or temperature. To change the

current display, press the DISPLAY key until the desired operating display appears.

CLEAR START TIME

1. Press the SELECT DAY key.

2. Press and hold the + or - key until the desired day

appears.

3. Press and hold the OCCUPIED START TIME or

the UNOC START TIME key until the time to clear appears.

4. Press and hold the CLEAR START TIME key until

the display shows four dashes (----). NOTE: If there is a second OCCUPIED setting, the start for

time this setting will appear instead of four dashes (----).

TEMPORARILY OVERRIDE PROGRAM

There are three overrides available. The 3 hour occupied

overrides can be initiated from a remote location or the thermostat. The 3 hour occupied override without + or - keys can also be initiated from the T7300B cover.

NOTE: Pressing the DISPLAY key at anytime will return

the thermostat to the program.

3 Hour Occupied

The 3 HOUR OCCUPIED key is used to override the

unoccupied program when people need to use the area temporarily (working late, weekends or holidays).

1. Press the 3 HOUR OCCUPIED key to change the

unoccupied temperature setting to the occupied setpoint for three hours.

NOTE: The program indicator will point to 3 HR OCCU-

PIED while the override is in effect.

3 Hour Occupied with + or - Key

SET + OR - KEY VALUE

When using the + or - key with the 3 HOUR OCCU-

PIED key, the + or - key has a preassigned value of 0 to 5°F (default is 0). Use the following steps to check or change the value:

1. Press the 3 HOUR OCCUPIED key. The program indicator will point to 3 HR OCCUPIED.

2. Press the DISPLAY key. The LCD will show a number from 0 to 5.

3. Press the + or - key to change the value.

4. Press the DISPLAY key to return to the program.

Set 3 Hour Occupied Override With + or - Key

The 3 HOUR OCCUPIED key with the + or - key will

override the unoccupied program for three hours with the occupied temperature setpoint + the preassigned key value (see Set + or - Key Value section).

1. Press the 3 HOUR OCCUPIED key to change the unoccupied temperature setting to the occupied setpoint for three hours.

2. Press the + key to increase or press the - key to decrease the occupied setpoint by the key value.

EXAMPLE: Unoccupied setpoint is 62°F, occupied

setpoint is 70°F and key value is 3°F. Pressing the 3 HOUR OCCUPIED key and the + key will change the setpoint from 62°F to 70°F plus 3°F or 73°F. Pressing the - key would change the setpoint to 70°F minus 3°F or 67°F.

NOTE: The program indicator will point to 3 HR OCCU-

PIED while the override is in effect. The LCD will not reflect the key value.

Cont Unoc

The continuous unoccupied override feature holds the setpoint at the unoccupied temperature setpoint until the DISPLAY or CONT UNOC key is pressed. This override is used when the area will be closed for a temporary closing such as a long holiday.

1. Press the CONT UNOC key to hold the temperature

at the unoccupied setpoint.

2. Press the CONT UNOC key again to return to the

program.

OVERVIEW

Check that all wiring is correctly completed and all sensors are installed. The thermostat should be mounted on the wallplate or subbase. If the thermostat has not been programmed, when the power is first turned on, the LCD will show four dashes (----). Without programming, the thermostat will operate from default temperature setpoints (see OPERATION section).

NOTE: It is helpful to program the thermostat before using

the Checkout procedure. Refer to the Programming sec-

tion to set a program.

Checkout

If the display has two dashes and a degree sign (--°), wait

sixty seconds and press the DISPLAY key twice. If the display does not change or is blank, refer to the Troubleshooting section.

TEST MODE

The thermostat has a test mode that aids the installer in performing the checkout. The test mode overrides the minimum on and off times so the checkout can be quickly performed. Press the CLOCK and DAY keys at the same time to start the test mode. All the display segments will appear. See Fig. 19

13 63-4038—7

T7200/T7300/Q7300 CHECKOUT

CA UTION

Do not use the test mode for longer than 10 minutes. The test mode overrides the minimum on and off times that protect the system. Equipment damage can result if the thermostat remains in the test mode.

COOL

Move switch to auto.

CA UTION

Do not operate cooling if outdoor temperature is below 50°F (10°C). Refer to the manufacturer recommendations.

Fig. 19—All segments on display.

TEST MODE INDICATOR

M4415

TUWETHFRS

COMM

HEAT

● ● ●

COOL BATT

To discontinue the test mode at any time, press the

CLOCK and DAY keys at the same time. The Test Mode Indicators will no longer show on the screen.

HEAT

NOTE: When the thermostat is used with a subbase with

subbase and fan switches, set the switches to AUTO.

1. Press the CLOCK and DAY keys at the same time.

This starts the test mode.

2. Press the DISPLAY key. See Fig. 20.

Fig. 20—Display when starting test sequence.

COMM

HEAT

● ● ●

COOL

BATT

M4418

NOTE: When cooling setting changes, thermostat will wait

up to five minutes before turning on the cooling equip-

ment. This delay is to protect the compressor.

1. Press the OCCUPIED COOL key.

2. Press the - key to lower the setpoint 5°F (3°C) below

the room temperature. The cooling should start (both stages if multistage), and the fan should run.

NOTE: It can be necessary to change the OCCUPIED

HEAT setpoint. However, be aware that the OCCUPIED

HEAT and OCCUPIED COOL setpoints must have a

2°F difference.

3. Press the OCCUPIED COOL key.

4. Press the + key to raise the setpoint 5°F (3°C) above

the room temperature. The cooling and fan should shut off.

When the thermostat has a system switch, move the switch to the COOL position and repeat Steps 1 through 4.

Move the system switch to the OFF position. All heating or cooling should stop.

FAN Thermostat

Fan Switch (located on the back of the thermostat):

— CON: Fan operates continuously in the occupied

mode.

— INT-FAN: Fan operates directly with the thermo-

stat call for heating or cooling in the occupied mode.

Subbase

3. Press the OCCUPIED HEAT key.

4. Press the + key to raise the setpoint 5°F (3°C) above

the room temperature. The heating should start (both stages if multistage), and the fan should run (may be a short delay on forced air systems).

NOTE: It can be necessary to change the OCCUPIED

COOL setpoint. However, be aware that OCCUPIED HEAT and OCCUPIED COOL setpoints must have a 2°F difference.

5. Press the OCCUPIED HEAT key.

6. Press the - key to lower the setpoint 5°F (3°C) below

the room temperature. The heating should shut off, followed by the fan shutoff.

When the thermostat has a system switch, move the

switch to the HEAT position and repeat steps 3 through 6.

63-4038—7 14

NOTE: Subbase fan switch overrides the thermostat fan

switch.

Subbase Dip Switch No. 4:

— ON: Fan operates only with cool. — OFF: Fan operates with heat and cool.

Q7300E Fan Switch:

— ON: Fan operates continuously. — AUTO: Fan operates directly with the thermostat

call for heating or cooling.

IMPORTANT: Press the CLOCK and DAY keys at the same

time to discontinue the test mode. The Test Mode Indicators will no longer show on the screen. See Fig. 19.

T7200/T7300/Q7300

OPERATION

Operation

T7200/T7300 RELAY LOGIC

The T7300 contains three switching relays. When the mini-jumper is set for conventional applications, the relays control first stage cooling, first stage heating, and fan. When the mini-jumper is set for heat pump applications, the relays control the heat pump compressor, auxiliary heat, and fan. Because of this change in switching logic, it is important to use Q7300C,D, or F subbases when the T7300 is set for heat pump applications and use Q7300A,B,E,G subbases when the T7300 is set for conventional applications.

The T7200A Relay Logic is for conventional applications. The T7300B Relay Logic is for heat pump applications.

T7200/T7300 AND CONVENTIONAL THERMOSTATS P+I Control

The T7200/T7300 microprocessor based control requires that the user understands temperature control and thermostat performance. A conventional electromechanical or electronic thermostat does not control temperature precisely at setpoint. Typically, there is an offset (droop) in the control point as the system load changes. This is a phenomenon that most people in the industry know and accept. Many factors contribute to offset including switch differential, thermal lag, overshoot, cycle rates and system load.

The thermostat microprocessor simultaneously gathers, compares and computes data. Using this data, it controls a wide variety of functions. The special proprietary algorithm (program) in the thermostat eliminates the factors causing offset. This makes temperature control more accurate than the conventional electromechanical or electronic thermostats. The temperature control algorithm is called proportional plus integral (P+I) control.

The thermostat sensor, located on the thermostat or remote, senses the current space temperature. The proportional error is calculated by comparing the sensed temperature to the programmed setpoint. The deviation from the setpoint is the proportional error.

The thermostat also determines integral error, which is a deviation based on the length of error time. The sum of the two errors is the (P+I) error. The cycle rate used to reach and maintain the setpoint temperature is computed using the P+I. The addition of the integral error is what differentiates the thermostat from many other electronic and electromechanical thermostats. See Fig. 21.

Fig. 21—Proportional temperature control versus P+I temperature control.

THERMOSTAT COOL SETPOINT

PROPORTIONAL COOL CONTROL POINT

P+I CONTROL POINT

TEMPERATURE

100 50 0 50 100

PROPORTIONAL HEAT CONTROL POINT

THERMOSTAT HEAT SETPOINT

HEATING

PERCENT LOAD

COOLING

M4414

While the thermostat is designed to eliminate droop, allowing droop can be desirable in applications where building visitors are dressed for the weather and their stays are brief. Examples of these applications include fast food restaurants and convenience stores. The droopless feature of the thermostat can be overridden by placing the droop/ droopless select switch located on the subbase in the OFF position. This removes the integral calculation from the thermostat control scheme, allowing only the proportional control to occur.

EQUIPMENT PROTECTION

As part of the operational sequence, the T7200/T7300 microprocessor also incorporates minimum On and Off times for all heating and cooling stages. Minimum On and Off times assure that rapid cycling of equipment will not occur, extending equipment life. Minimum On/Off times for compressor stages are two minutes On and four minutes Off. Minimum On/Off times for heat (electric resistive or gas) are two minutes.

T7200/T7300 THERMOSTAT OPERATION Startup

When power to the thermostat is turned on, a startup and initialization program begins. The startup takes place after total loss of power (24 Vac and battery backup). At this time, the system default values are put into memory (replacing the user program that was lost). Default values are heating 68°F (20°C) and cooling 78°F (26°C) for the occupied modes. Unoccupied default values are heating 55°F (13°C) and cooling 90°F (32°C).

15 63-4038—7

T7200/T7300/Q7300 OPERATION

NOTE: These unoccupied defaults are only used if an unoc-

cupied start time is entered or the CONT UNOC key is pressed. Immediately following initialization, the user can enter new setpoints to be used in place of the default values.

If the battery backup was operating during a power failure, and 24 Vac power comes back on, the user-entered time and temperature program saved in memory is used. If 24 Vac is lost, and no battery backup exists, the default temperatures is placed into memory when the power comes back on. These default values are then used for temperature control.

Occupied

When the thermostat is operating in the occupied mode, the temperature is controlled to the occupied heat or cool setpoint. The normally open (A1) auxiliary relay contacts are closed and the normally open contacts (A3) auxiliary relay contacts are opened during the occupied modes (if the subbase being used has this option). The fan operates as follows:

• No switching subbase used: Operation of the fan is continuous (fan always energized) unless the fan option switch on the back of the T7300 (#3) is set to intermittent (cycles with Y1 or W1).

• Switching subbase used: Q7300 fan switch can be set to ON (always energized) or AUTO (cycles with Y1 or W1).

NOTE: If subbase configuration switch no. 4 (on any Q7300

conventional subbase) is set to the ON position, the fan cycles on a call for cooling only; switch no. 4 has no effect on heat pump subbases (Q7300C, D, F).

Unoccupied

When the thermostat is operating in the unoccupied mode, the temperature is controlled to the unoccupied heat or cool setpoint. The auxiliary relay contacts is open and the fan operates as follows:

• Switching or non-switching subbase used: Fan is always be intermittent (cycles with Y1 or W1). See NOTE for OCCUPIED.

Conventional System

RECOVERY FROM UNOCCUPIED

Intelligent Recovery™ is a Honeywell trademark for the way the thermostat controls the heating and cooling equipment during recovery from unoccupied to occupied setting. During recovery, the control point ramps up at the rate of 5°F (3°C) per hour rather than jumping from the energy savings setting to the comfort setting all at once. This provides additional energy savings.

When the Intelligent Recovery™ is used in the heating mode, the control point raises 5°F (3°C) per hour, maximizing the use of the more economical first stage heat to bring the sensed temperature to the desired comfort setpoint. This minimizes using the typically more expensive second stage heat.

The advantages are:

• Comfort setting is achieved at the programmed time and maintained regardless of weather conditions; occupants are comfortable.

• Drafts from low temperature discharge air are minimized during occupied periods.

• The thermostat automatically uses the more economical first stage of heat as the primary heat source during heat mode recovery, avoiding the use of the expensive second stage heating.

• Comfort and energy savings can be achieved in both heating and cooling.

• The thermostat reduces heat cycling, extending equipment life.

Heat Pump Operation

The T7200 is fixed for either heat pump or conventional control applications. The T7300 is configurable for either heat pump or conventional applications, depending on the subbase used. Additional information is required when configured for heat pump.

The heat pump mini-jumper (located on the back of the thermostat) places the thermostat into the heat pump mode. Refer to the Installation section.

O AND B TERMINALS FOR HEATING OR COOLING CHANGEOVER

The Q7300C and F controls heat pump changeover. The Q7300D is only used in a heat pump application when the heat pump controls the reversing valve changeover. See Table 8 for the operation of the O and B terminals on the Q7300C and F.

TABLE 8—OPERATION OF THE Q7300

O AND B TERMINALS.

System Switch O B

Heat Open Closed Cool Closed Open Auto (Heat) Auto (Cool)

Open Closed

Closed Open Emergency Heat Open Closed Off

When the system is calling for heat or is de-energized, but

the last function was heat.

When the system is calling for cool or is de-energized, but the last function was cool.

When the last function was heating, the operation is the same as Auto (Heat). If the last function was cooling, the operation is the same as Auto (Cool).

RECOVERY FROM UNOCCUPIED

The heating recovery ramp is 3°F per hour, which differs from the 5°F per hour for conventional systems. The 3°F degree difference helps the system use the economical heat pump more and the expensive auxiliary heat less. The cooling ramp is 5°F, the same as conventional systems.

63-4038—7 16

T7200/T7300/Q7300

OPERATION

FAN OPERATION

When the subbase fan switch is in the ON position, the fan is energized continuously in the occupied mode. The AUTO position energizes the fan with the heating or cooling system. If the subbase is Q7300D, during unoccupied mode, the fan cycles with Y1 and W1.

NOTE: The Q7300 switch no. 4 has no effect when the

thermostat is configured for heat pump. EMERGENCY HEAT

When the system switch is in the EM. HEAT position (on select Q7300 subbases), the auxiliary heat is stage 1 and the compressor stages are locked off. The fan cycles with the auxiliary heat.

GENERAL OPERATION INFORMATION Cycle Rates

The thermostat control algorithm maintains the temperature by cycling stages of heating or cooling to meet setpoint. See Table 9 for the nominal cycle rates provided.

TABLE 9—NOMINAL CYCLE RATES

FOR HEATING AND COOLING.

System Type H1 H2 C1 C2 C3

Conventional 8 8444 Heat Pump 4 8 4 4 —

Subbase Auxiliary Relay

The Q7300 auxiliary relay output acts as a time-of-day switch to be used with an economizer minimum position control. The normally open (A1) auxiliary relay contacts are closed during the occupied period and open during the unoccupied period. The normally closed (A3) auxiliary relay contacts are open during the occupied period and closed during the unoccupied period. The contacts are in the normal state during recovery.

Interfacing with Electromechanical Economizers (Subbases with Auxiliary Relay)

Mechanical cooling is often used when outside temperatures are in the 50° to 60°F range and humidity is below 50 percent. In central and northern climates, hundreds of hours fall into this temperature category. By permitting 80 to 100 percent outside air into the system, mechanical cooling may not be needed at all, particularly during spring and fall.

An economizer is used to take advantage of the outside air. The typical economizer consists of an outside air damper, motor, outdoor air changeover control and a minimum position potentiometer. The motor controls the dampers. Suitability of the outside air for cooling is determined by the outdoor air changeover control. The potentiometer is used for adjusting the minimum position of the economizer dampers, which provide a minimum amount of fresh air for ventilation.

The economizer reduces compressor run time, thereby saving energy and extending the compressor life. The drawback to the economizer is that during the unoccupied

period, if there is no call for cooling or outdoor air is not suitable for free cooling, the economizer is controlled to minimum position. This position allows some percentage of outdoor air to enter the building, regardless of air suitability. The situation can cause the heating or cooling to run more often than if suitable outdoor air is permitted to enter the building.

The thermostat can take advantage of an economizer by connecting the auxiliary relay contacts (A1 and A2) of the subbase to control the economizer minimum position potentiometer. The contacts close during the occupied period, allowing the economizer to operate normally. The contacts are open duirng the unoccupied period, disabling the minimum position feature of the economizer. The open contacts cause the economizer to drive dampers fully closed instead of staying at minimum open position. This reduces the possibility of unsuitable outdoor air from entering the building, which lowers the internal load on the HVAC system are saves additional energy.

Other Uses for the Auxiliary Relay

Examples of other uses of the auxiliary relay are hot water heaters, lighting or baseboard heat. The additional loads are connected to the auxiliary relay contacts on the subbase. The contacts are rated for 1.6A at 30 Vac, but can be adapted to higher current applications with the use of an external relay and transformer. See Fig. 22.

Duty Cycle Interface

Duty cycling HVAC equipment controlled with a T7200 or T7300 is recommended because the thermostat is already maintaining an optimum control cycle rate. Adding another external duty cyle increases the P+I error being sensed and results in degradation of temperature control and equipment efficiency.

Fig. 22—Use of external relay and transformer

for auxiliary loads greater than 1.6A.

(HOT)

Q7300 SUBBASE

A3 AUXILIARY RELAY CONTACTS

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD

PROTECTION AS REQUIRED. RELAY REQUIRED (R8222 OR SIMILAR).

TERMINAL A3 AVAILABLE ON Q7300A,B,D,E AND G MODELS ONLY

TO LOAD

M4383

17 63-4038—7

T7200/T7300/Q7300 CROSS REFERENCE

Refer to Table 10 for thermostat and subbase cross referencing information.

Model

Number

Fig.

No. Description

T7200A 7-day programmable thermostat for commercial conventional systems.

A1006 23,24,25 Tradeline®. T7200A1006 Beige color A1022 23,24,25 International faceplate. T7200A1006 Beige color

T7200B 7-day programmable thermostat for commercial water source heat pump systems.

B1004 9,26 Tradeline. T7200B1004 Beige color B1012 9,26 Mammoth part number 71116701. T7200B1004 Beige color B1020 9,26 Carrier part number HH07AX010A. T7200B1004 Beige color

T7300A 7-day programmable thermostat for commercial conventional systems.

A1005 Tradeline®. T7300A1005 Beige color A1013 York part no. 025-27506. Used in Y7300B1008, T7300A1005 Beige color

A1021 Lennox part no. 81G5901. T7300A1005 Beige color

A1039 Trane part no. THT-0608. T7300A1005 Beige color

A1047 Micrometl part no. 901-114. Used in Y7300A1000 T7300A1005 Beige color

A1054 International face plate. T7300A1005 Beige color

A1062 Carrier part no. HH07AX005. Used in Y7300A1018. T7300A1005 Beige color

A1070 International face plate. T7300A1005 Beige color

A1088 Spanish face plate. T7300A1005 Beige color

A1104 Tradeline. T7300A1104 Premier White™ color

T7300B Fully configurable programmable thermostat with 3-HOUR OVERRIDE key on cover. See figure 2

for view of door.

B1003 Tradeline. T7300B1003 Beige color B1011 Climate Control part no. 490249B-05. T7300B1003 Beige color

B1029 McQuay part no. 490249B-06. T7300B1003 Beige color

B1037 Arcoaire part no. 1506746. Used in Y7300B1024. T7300B1003 Beige color

B1045 Comfort Maker part no. 1505746. Used in T7300B1003 Beige color

B1052 Tradeline. T7300B1052 Premier White™ color

See subbase for figure number.

Cross Refer ence

TABLE 10—THERMOSTAT AND SUBBASE CROSS REFERENCE.

Trade

Replacement Remarks

Y7300C1006 and Y7300D1004. T7300A1104 Premier White™ color

T7300A1104 Premier White™ color

and Y7300C11014. T7300A1104 Premier White™ color

T7300A1104 Premier White™ color

T7300B1052 Premier White™ color

Y7300B1016. T7300B1052 Premier White™ color

(Continued)

63-4038—7 18

T7200/T7300/Q7300

CROSS REFERENCE

TABLE 10—THERMOSTAT AND SUBBASE CROSS REFERENCE (Continued).

Model

Number

Fig.

No. Description

Trade

Replacement Remarks

T7300C Fully configurable programmable thermostat with limited access cover. See Figure 3 for view of

door.

C1001 Tradeline. T7300C1001 Beige color C1019 Tradeline. Premier White™ T7300. T7300C1019 Premier White™ color

1 1

Subbase Q7300A Conventional equipment. System: none. Fan: none.

A1000 27 Tradeline. 1 heat and 2 cool. Q7300A1000 Brown color A1018 28,29,

Tradeline. 2 heat and 2 cool. Q7300A1018 Brown color 30,32, 35,36

A1034 27,32 Trane part no. BAS-0444. Q7300A1000 Brown color

Q7300A1075 Light gray color

A1042 28,29, Trane part no. BAS-0445. Q7300A1018 Brown color

30,32,

Q7300A1083 Light gray color

35,36

A1059 28,29 Micrometl part no. 901-3. Used in Y7300A1000. Q7300A1018 Brown color

30,32,

Q7300A1083 Light gray color

35,36

A1067 28,29, Carrier part no. HH93AX005. Q7300A1018 Brown color

30,32,

Q7300A1083 Light gray color

35,36

A1075 27,32 Tradeline. Used with Premier White™ T7300.

Q7300A1075 Light gray color

1 heat and 1 cool.

A1083 28,29,

30,32,

Tradeline. Used with Premier White™ T7300.

2 heat and 2 cool.

Q7300A1083 Light gray color

35,36

Q7300B Conventional equipment. System: Heat-Off-Cool-Auto. Fan: Auto-On.

B1008 28,29,

Tradeline. 2 heat and 2 cool. Q7300B1008 Brown color 30,32, 35,36

B1016 28,29, Lennox part no. 81G6001. Q7300B1008 Brown color

30,32, Q7300B1073 Brown color 35,36 Q7300B1081 Light gray color

B1024 28,29, York part no. 025-227507. Used in Y7300B1008. Q7300B1008 Brown color

30,32, Q7300B1073 Brown color 35,36 Q7300B1081 Light gray color

B1032 28,29, Trane part no. BAS-0446. Q7300B1008 Brown color

30,32, Q7300B1073 Brown color 35,36 Q7300B1081 Light gray color

B1040 28,29, Carrier part no. HH93AAX004. Q7300B1008 Brown color

30,32, Q7300B1073 Brown color 35,36 Q7300B1081 Light gray color

B1057 28,29, Snyder General part no. 1520510. Used in Q7300B1008 Brown color

30,32, Y7300B1016 and Y7300B10224. Q7300B1073 Brown color 35,36 Q7300B1081 Light gray color

B1065 28,29 Snyder General part no. 490249B-04. Q7300B1008 Brown color

30,32, Q7300B1073 Brown color 35,36 Q7300B1081 Light gray color

See subbase for figure number.

(Continued)

19 63-4038—7

T7200/T7300/Q7300 CROSS REFERENCE

Model

Number

B1073 28,29,

30,32, 35,36

B1081 28,29,

30,32, 35,36

Q7300C Heat pump systems. System: Em. Ht.-Heat-Off-Cool-Auto. Fan: Auto-On.

C1006 38,42 Tradeline. 1 stage heat pump. Q7300C1006 Brown color C1014 40 Tradeline. 2 stage heat pump. Q7300C1014 Brown color C1022 40 Lennox part no.81G6901. Q7300C1014 Brown color

C1030 40 York part no. 025-27508. Used in Y7300C1006. Q7300C1014 Brown color

C1048 38,42 Trane part no.BAS-0447. Q7300C1014 Brown color

C1055 40 Trane part no.BAS-0448. Q7300C1014 Brown color

C1063 38,42 Micrometl part no. 901-24. Used in Y7300C1014. Q7300C1006 Brown color

C1071 40 Obsolete Brown color C1089 40 Tradeline. 2 stage heat pump. Q7300C1089 Brown color C1097 38,42 Tradeline. Used with Premier White T7300.

C1105 40 Tradeline. Used with Premier White T7300.

Q7300D Heat pump system. System: Em.Ht.-Heat-Off-Cool-Auto. Fan: Auto-On.

D1004 41 Carrier part no. HH93AX002. Q7300D1038 Brown color

D1012 39,42 Carrier part no. HH93AX003. Q7300D1053 Brown color

D1020 41 York part no. 025-27724-000. Used in Y7300D1004. Q7300D1038 Brown color

D1038 41 Tradeline. 2 stage heat pump. Q7300D1038 Brown color D1046 41 Lennox part no. 13H7601. Q7300D1038 Brown color

TABLE 10—THERMOSTAT AND SUBBASE CROSS REFERENCE (Continued).

Fig.

No. Description

Tradeline. 2 heat and 2 cool. Q7300B1073 Brown color

Tradeline. Used with Premier White T7300.

2 heat and 2 cool.

1 stage heat pump.

2 stage heat pump.

Trade

Replacement Remarks

Q7300B1081 Light gray color

Q7300C1089 Brown color Q7300C1105 Light gray color

Q7300C1097 Light gray color

Q7300C1105 Light gray color

Q7300D1061 Brown color Q7300D1079 Light gray color

Q7300D1087 Light gray color

Q7300D1061 Brown color Q7300D1079 Light gray color

63-4038—7 20

(Continued)

TABLE 10—THERMOSTAT AND SUBBASE CROSS REFERENCE (Continued).

Model

Number

D1053 Tradeline. 1 stage heat pump. Q7300D1053 Brown color D1061 41 Tradeline. 2 stage heat pump. Q7300D1061 Brown color D1079 41 Tradeline. Used with Premier White T7300.

D1087 39,42 Tradeline. Used with Premier White T7300.

Q7300E Conventional equipment. System: none. Fan: none.

E1001 28,29,30Tradeline. 2 heat and 2 cool. Q7300E1001 Brown color

Fig.

No. Description

2 stage heat pump.

1 stage heat pump.

Trade

Replacement Remarks

Q7300D1079 Light gray color

Q7300D1087 Light gray color

T7200/T7300/Q7300

CROSS REFERENCE

E1019 28,29,30Tradeline. Used with Premier White T7300.

2 heat and 2 cool.

Q7300F Heat pump systems. System: none. Fan: none.

F1009 44 Tradeline. 1 stage heat pump. Q7300F1009 Brown color F1017 44 Tradeline. 2 stage heat pump. Q7300F1017 Brown color F1025 44 Tradeline. Used with Premier White T7300.

1 stage heat pump.

F1033 44 Tradeline. Used with Premier White T7300.

2 stage heat pump.

F1041 43 Carrier part no. HH93AX006. Used in Y7300A1018. Q7300F1009 Brown color

Q7300G Conventional equipment. System: Heat-Off-Cool-Auto. Fan: none.

G1007 31,32,

33,34

G1015 31,32,

33,34

Q7300L Conventional equipment. System: none. Fan: Auto-On.

L1006 45 LDS Church. Q7300L1014 Brown color L1014 46 Tradeline. 2 heat and 1 cool. Q7300L1014 Brown color

Tradeline. 1 heat and 3 cool. Q7300G1007 Brown color

Tradeline. Used with Premier White T7300.

1 heat and 3 cool.

Q7300E1019 Light gray color

Q7300F1025 Light gray color

Q7300F1033 Light gray color

Q7300F1025 Light gray color

Q7300G1015 Light gray color

21 63-4038—7

T7200/T7300/Q7300 WIRING DIAGRAMS

Fig. 23—T7200A with wallplate.

Wiring Diagrams

T7200 THERMOSTAT

FAN

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 24 VAC SECONDARY; MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE.

FIELD INSTALLED JUMPER.

WALLPLATE

EXISTING HVAC EQUIPMENT

HVAC EQUIPMENT TERMINAL STRIP

SYSTEM TRANSFORMER

(IF NO "C" TERMINAL)

COOL 1

HEAT 1

FAN

M4405

L1 (HOT)

63-4038—7 22

T7200/T7300/Q7300 WIRING DIAGRAMS

Fig. 24—T7200A with 1-stage cooling system with differential enthalpy changeover using W7459A/C7400 with M7415 Actuator.

AIR ENTHALPY

T7200A

WALLPLATE

OUTDOOR

SENSOR

C7400

RETURN AIR

ENTHALPY

SENSOR

C7400

C7150B MIXED OR DISCHARGE AIR SENSOR

+ S

TR1

TT1

T6301 AMBIENT LOCKOUT CONTROL

F SETPOINT

W7459A ECONOMIZER PACKAGE

MINIMUM POSITION ADJUSTMENT

HVAC EQUIPMENT TERMINAL STRIP

COOL 1

HEAT 1

FAN

1S1

M7415 ACTUATOR

TR1

24 VAC

L1 (HOT)

MIXED AIR

SENSOR

MINIMUM

POSITION

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 24 VAC SECONDARY.

ASSURE THAT EQUIPMENT TRANSFORMER IS SIZED TO HANDLE THE EXTRA LOAD OF THE ECONOMIZER, ACTUATOR, T7200 AND WALLPLATE

AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED BY A 24 VAC INPUT.

RELAYS 1K AND 2K ACTUATE WHEN THE ENTHALPY SENSED BY THE C7400 IS HIGHER THAN THE ENTHALPY SETPOINT A-D.

FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD BE REMOVED ONLY IF A C7400 ENTHALPY SENSOR IS ADDED TO SR AND + FOR DIFFERENTIAL ENTHALPY.

FIELD INSTALLED JUMPER.

23 63-4038—7

M4407

T7200/T7300/Q7300 WIRING DIAGRAMS

Fig. 25—T7200A with electric heat system.

T7200 THERMOSTAT

FAN

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 24 VAC SECONDARY; MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE.

FIELD INSTALLED JUMPER.

RELAY REQUIRED (R8222 OR SIMILAR).

WALLPLATE

EXISTING HVAC EQUIPMENT

SYSTEM TRANSFORMER

(IF NO "C" TERMINAL)

COOL 1

ELECTRIC

HEAT FAN RELAY 1K

1K1

HEAT 1

FAN

M4406

L1 (HOT)

Fig. 26—T7200B with 1-stage heat pump system.

T7200 THERMOSTAT

C/O

H1/C1

FAN

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 24 VAC SECONDARY; MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE.

WALLPLATE

EXISTING HVAC EQUIPMENT

HVAC EQUIPMENT TERMINAL STRIP

SYSTEM TRANSFORMER

(IF NO "C" TERMINAL)

REV. VALVE

COMP.

FAN

M4396

L1 (HOT)

63-4038—7 24

Fig. 27—T7300/Q7300A with single transformer 1-stage heat/1-stage cool system.

T7200/T7300/Q7300 WIRING DIAGRAMS

T7300 THERMOSTAT

FAN

T7147

REMOTE

COMFORT

ADJUST

MODULE

Q7300 SUBBASE

CA1

CA2

CA3

CA4

CA5

EXISTING HVAC EQUIPMENT

HVAC EQUIPMENT

COM

LED1

LED2

24 VAC SECONDARY; MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE. FIELD INSTALLED JUMPER.

24 VAC ONLY.

TERMINAL STRIP

(IF NO "C" TERMINAL)

SYSTEM TRANSFORMER

COOL 1

HEAT 1

FAN

L1 (HOT)

M4386

L1 (HOT)

25 63-4038—7

T7200/T7300/Q7300 WIRING DIAGRAMS

Fig. 28—T7300/Q7300A,B,E used with single transformer 1-stage heat/2-stage cool system.

T7300 THERMOSTAT

FAN

T7147

REMOTE

COMFORT

ADJUST

MODULE

24 VAC SECONDARY; MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE. FIELD INSTALLED JUMPER.

24 VAC ONLY.

3 4

MODEL NUMBER Q7300A Q7300B Q7300E

Q7300 SUBBASE

CA1

CA2

CA3

CA4

CA5

FAN SWITCH NO YES YES

AUXILIARY RELAY CONTACTS

SYSTEM SWITCH NO YES NO

COM

LED1

LED2

ECONOMIZER

EXISTING HVAC EQUIPMENT

HVAC EQUIPMENT TERMINAL STRIP

SYSTEM TRANSFORMER

(IF NO "C" TERMINAL)

COOL 1

L1 (HOT)

COOL 2

HEAT 1

FAN

SYSTEM SWITCH

HEAT OFF COOL

AUTO

FAN SWITCH

ON AUTO

M4387

L1 (HOT)

63-4038—7 26

Fig. 29—T7300/Q7300A,B used with single transformer 2-stage heat/1-stage cool system.

T7200/T7300/Q7300 WIRING DIAGRAMS

T7300 THERMOSTAT

FAN

T7147

REMOTE

COMFORT

ADJUST

MODULE

24 VAC SECONDARY; MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE. FIELD INSTALLED JUMPER.

24 VAC ONLY.

3 4

MODEL NUMBER Q7300A Q7300B Q7300E

Q7300 SUBBASE

CA1

CA2

CA3

CA4

CA5

FAN SWITCH NO YES YES

AUXILIARY RELAY CONTACTS

SYSTEM SWITCH NO YES NO

COM

LED1

LED2

EXISTING HVAC EQUIPMENT

HVAC EQUIPMENT TERMINAL STRIP

ECONOMIZER

SYSTEM TRANSFORMER

(IF NO "C" TERMINAL)

COOL 1

HEAT 1

HEAT 2

L1 (HOT)

FAN

SYSTEM SWITCH

HEAT OFF

COOL

AUTO

FAN SWITCH

ON AUTO

M4388

L1 (HOT)

27 63-4038—7

T7200/T7300/Q7300 WIRING DIAGRAMS

Fig. 30—T7300/Q7300A,B,E used with single transformer 2-stage heat/2-stage cool system without economizer.

T7300 THERMOSTAT

REMOTE

COMFORT

ADJUST

MODULE

24 VAC SECONDARY; MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE. FIELD INSTALLED JUMPER.

24 VAC ONLY.

3 4

MODEL NUMBER Q7300A Q7300B Q7300E

FAN

T7147

Q7300 SUBBASE

CA1

CA2

CA3

CA4

CA5

FAN SWITCH NO YES YES

AUXILIARY RELAY CONTACTS

SYSTEM SWITCH NO YES NO

EXISTING HVAC EQUIPMENT

HVAC EQUIPMENT

COM

LED1

LED2

ECONOMIZER

TERMINAL STRIP

(IF NO "C" TERMINAL)

L1 (HOT)

SYSTEM TRANSFORMER

COOL 1

COOL 2

HEAT 1

HEAT 2

FAN

SYSTEM SWITCH

FAN SWITCH

HEAT OFF AUTO

COOL

ON AUTO

M4389

L1 (HOT)

63-4038—7 28

Fig. 31—T7300/Q7300G with single transformer 1-stage heat/3-stage cool system.

T7200/T7300/Q7300 WIRING DIAGRAMS

T7300 THERMOSTAT

FAN

T7147

REMOTE

COMFORT

ADJUST

MODULE

24 VAC SECONDARY; MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE. FIELD INSTALLED JUMPER.

24 VAC ONLY.

Q7300 SUBBASE

CA1

CA2

CA3

CA4

CA5

AUXILIARY RELAY CONTACTS

COM

LED1

LED2

EXISTING HVAC EQUIPMENT

HVAC EQUIPMENT TERMINAL STRIP

ECONOMIZER

SYSTEM TRANSFORMER

(IF NO "C" TERMINAL)

COOL 1

COOL 2

L1 (HOT)

COOL 3

HEAT 1

FAN

SYSTEM SWITCH

HEAT OFF AUTO

COOL

M4390

L1 (HOT)

29 63-4038—7

T7200/T7300/Q7300 WIRING DIAGRAMS

Fig. 32—T7300/Q7300A,B,G defeating economizer minimum position during unoccupied period in a 2-stage cool system with single enthalpy changeover using W7459A/C7400 with an M7415 actuator.

ENTHALPY

SENSOR

C7400

620 OHM

RESISTOR

C7150B MIXED OR DISCHARGE AIR SENSOR

W7459A ECONOMIZER PACKAGE

TR1

TT1

MINIMUM POSITION ADJUSTMENT

1S1

M7415 ACTUATOR

24 VAC

SENSOR

MIN POS

TR TR1

T P1

TR1

24 VAC

MIXED AIR

SENSOR

MINIMUM

POSITION

L1 (HOT)

M7415

T7300/Q7300

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTIONS AS REQUIRED. 24 VAC SECONDARY.

ASSURE THAT EQUIPMENT TRANSFORMER IS SIZED TO HANDLE THE EXTRA LOAD OF THE ECONOMIZER, ACTUATOR AND T7300/Q7300.

1S, AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED BY A 24 VAC INPUT.

RELAYS 1K AND 2K ACTUATE WHEN THE ENTHALPY SENSED BY THE C7400 IS HIGHER THAN THE ENTHALPY SETPOINT A-D.

FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD BE REMOVED ONLY IF C7400 ENTHALPY SENSOR IS ADDED TO SR AND + FOR DIFFERENTIAL ENTHALPY.

FIELD INSTALLED JUMPER.

T6301 AMBIENT

LOCKOUT CONTROL

HVAC EQUIPMENT TERMINAL STRIP

COOL 1

COOL 2

HEAT 2

HEAT 1

FAN

M4392

63-4038—7 30

T7200/T7300/Q7300 WIRING DIAGRAMS

Fig. 33—T7300/Q7300G defeating economizer minimum position during unoccupied period in 3-stage cool system with single enthalpy changeover using W7459A/C7400 with M7415 Actuator.

ENTHALPY

SENSOR

C7400

C7150B MIXED

OR DISCHARGE

AIR SENSOR

+ S

620 OHM RESISTOR

TR1

TT1

3K1

3K2

W7459A ECONOMIZER PACKAGE

1S1

MINIMUM POSITION ADJUSTMENT

24 VAC

SENSOR

MIN POS

M7415 ACTUATOR

TR1

24 VAC

MIXED AIR

MINIMUM

TR TR1

P1 P

SENSOR

POSITION

T7300/Q7300

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTIONS AS REQUIRED. 24 VAC SECONDARY.

ASSURE THAT EQUIPMENT TRANSFORMER IS SIZED TO HANDLE THE EXTRA LOAD OF THE ECONOMIZER, ACTUATOR AND T7300/Q7300.

1S, AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED BY A 24 VAC INPUT.

RELAYS 1K AND 3K ACTUATE WHEN THE ENTHALPY SENSED BY THE C7400 IS HIGHER THAN THE ENTHALPY SETPOINT A-D.

FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD BE REMOVED ONLY IF C7400 ENTHALPY SENSOR IS ADDED TO SR AND + FOR DIFFERENTIAL ENTHALPY.

FIELD INSTALLED JUMPER.

T6301 AMBIENT LOCKOUT

CONTROL

F SETPOINT

HVAC EQUIPMENT TERMINAL STRIP

COOL 1

COOL 2

COOL 3

HEAT 1

FAN

M7415

L1 (HOT)

M4395

31 63-4038—7

T7200/T7300/Q7300 WIRING DIAGRAMS

Fig. 34—T7300/Q7300G with W859A Economizer package in 1-stage heat/3-stage cool system defeating economizer minimum position during unoccupied period.

T7300 THERMOSTAT

FAN

Q7300 SUBBASE

COM

LED1

LED2

EXISTING HVAC EQUIPMENT

HVAC EQUPIMENT TERMINAL STRIP

6K1

3K1

BLACK

RED

BLACK YELLOW

SYSTEM TRANSFORMER

COOL 3

HEAT 1

FAN

COOL 1

COOL 2

L1 (HOT)

AUXILIARY RELAY CONTACTS

TYPICAL W859D ECONOMIZER CONTROL PACKAGE

MIXED AIR

(HOT)

TEMPERATURE

CONTROLLER

BLUE

5K1

RISE

MINIMUM POSITION POTENTIOMETER

4K1 1

2 3 4

6 7

8 9

MODUTROL

MOTOR

BLACK

YELLOW

R B

OPEN

RED

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 24 VAC SECONDARY.

MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE. ENTHALPY CONTROL MAKES TERMINALS 2-1 ON ENTHALPY RISE AND 2-3 ON ENTHALPY FALL. RELAY REQUIRED (R8222 OR SIMILAR). IMPORTANT: MIXED AIR SENSOR MUST BE LOCATED DOWNSTREAM OF THE EVAPORATOR COIL

IN THE DISCHARGE AIR DUCT TO PROVIDE ECONOMIZER LOW LIMIT FUNCTION. FIELD INSTALLED JUMPER. ECONOMIZER MOTOR SPRING RETURNS CLOSED ANYTIME FAN IS NOT RUNNING. 24 VAC ONLY. A3 TERMINAL AVAILABLE ON Q7300A,B,D,E, AND G MODELS ONLY.

BROWN

1K1 1K2

OUTDOOR AIR CHANGEOVER SWITCH

2K1

2K2

T875 LOW AMBIENT COMPRESSOR LOCKOUT

VIOLET

M4409

63-4038—7 32

T7200/T7300/Q7300 WIRING DIAGRAMS

Fig. 35—T7300/Q7300A,B with W859D economizer package in 2-stage heat/2-stage cool system defeating economizer minimum position during unoccupied period.

T7300 THERMOSTAT

FAN

Q7300 SUBBASE

COM

EXISTING HVAC EQUIPMENT

HVAC EQUPIMENT TERMINAL STRIP

SYSTEM TRANSFORMER

HEAT 2

HEAT 1.

BLACK

RED

FAN

COOL 1

L1 (HOT)

AUXILIARY RELAY CONTACTS

LED1

LED2

TYPICAL W859D ECONOMIZER CONTROL PACKAGE

MIXED AIR

(HOT)

TEMPERATURE

CONTROLLER

BLUE

5K1

RISE

MINIMUM POSITION POTENTIOMETER

4K1 1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 24 VAC SECONDARY.

MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE.

ENTHALPY CONTROL MAKES TERMINALS 2-1 ON ENTHALPY RISE AND 2-3 ON ENTHALPY FALL.

RELAY REQUIRED (R8222 OR SIMILAR). IMPORTANT: MIXED AIR SENSOR MUST BE LOCATED DOWNSTREAM OF THE EVAPORATOR COIL

IN THE DISCHARGE AIR DUCT TO PROVIDE ECONOMIZER LOW LIMIT FUNCTION.

FIELD INSTALLED JUMPER. ECONOMIZER MOTOR SPRING RETURNS CLOSED ANYTIME FAN IS NOT RUNNING.

7 8

24 VAC ONLY.

A3 TERMINAL AVAILABLE ON Q7300A,B,D,E, AND G MODELS ONLY.

MODUTROL

MOTOR

YELLOW

OPEN

RED

3K1

BLACK

BROWN

1K1 1K2

OUTDOOR AIR CHANGEOVER SWITCH

2K1

2K2

BLACK YELLOW

VIOLET

COOL 2

T875 LOW AMBIENT COMPRESSOR LOCKOUT

M4411

33 63-4038—7

T7200/T7300/Q7300 WIRING DIAGRAMS

Fig. 36—T7300/Q7300A,B with economizer package in 1-stage cool system defeating economizer minimum position during unoccupied period with differential enthalpy changeover using W7459A/C7400 with M7415 Actuator.

OUTDOOR

AIR ENTHALPY

SENSOR

RETURN AIR

ENTHALPY

SENSOR

C7400

C7150B MIXED OR DISCHARGE AIR SENSOR

W7459A ECONOMIZER PACKAGE

TR1

+ S

TT1

MINIMUM POSITION ADJUSTMENT

1S1

M7415 ACTUATOR

TR1

24 VAC

MIXED AIR

MINIMUM

SENSOR

POSITION

T7300/Q7300

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTIONS AS REQUIRED. 24 VAC SECONDARY.

ASSURE THAT EQUIPMENT TRANSFORMER IS SIZED TO HANDLE THE EXTRA LOAD OF THE ECONOMIZER, ACTUATOR AND T7300/Q7300.

AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED BY A 24 VAC INPUT.

RELAYS 1K AND 2K ACTUATE WHEN THE ENTHALPY SENSED BY THE C7400 IS HIGHER THAN THE ENTHALPY SETPOINT A-D.

FIELD INSTALLED JUMPER.

T6301 AMBIENT

LOCKOUT CONTROL

HVAC EQUIPMENT TERMINAL STRIP

COOL 1

HEAT 2

HEAT 1

FAN

L1 (HOT)

M4393

63-4038—7 34

T7200/T7300/Q7300 WIRING DIAGRAMS

Fig. 37—T7300/Q7300 with economizer package in 1-stage cool system defeating economizer minimum position during unoccupied period with single enthalpy changeover using W7459A/C7400 with M7415 Actuator.

ENTHALPY

SENSOR

C7400

620 OHM

RESISTOR

C7150B MIXED OR DISCHARGE AIR SENSOR

TR1

TT1

W7459A ECONOMIZER PACKAGE

MINIMUM POSITION ADJUSTMENT

1S1

24 VAC

SENSOR

MIN POS

M7415 ACTUATOR

TR1

24 VAC

MIXED AIR

MINIMUM

TR TR1

P1 P

SENSOR

POSITION

T7300/Q7300

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTIONS AS REQUIRED. 24 VAC SECONDARY.

ASSURE THAT EQUIPMENT TRANSFORMER IS SIZED TO HANDLE THE EXTRA LOAD OF THE ECONOMIZER, ACTUATOR AND T7300/Q7300.

1S, AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED BY A 24 VAC INPUT.

RELAYS 1K AND 2K ACTUATE WHEN THE ENTHALPY SENSED BY THE C7400 IS HIGHER THAN THE ENTHALPY SETPOINT A-D.

FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD BE REMOVED ONLY IF C7400 ENTHALPY SENSOR IS ADDED TO SR AND + FOR DIFFERENTIAL ENTHALPY.

FIELD INSTALLED JUMPER.

T6301 AMBIENT

LOCKOUT CONTROL

HVAC EQUIPMENT TERMINAL STRIP

COOL 1

HEAT 2

HEAT 1

FAN

M7415

L1 (HOT)

M4394

35 63-4038—7

T7200/T7300/Q7300 WIRING DIAGRAMS

Fig. 38—T7300/Q7300C with 2-stage heat/1-stage cool heat pump system using O or B terminal for reversing valve.

T7300 THERMOSTAT

H1/C1

AUX HT

FAN

Q7300 HEAT PUMP SUBBASE

CO HT

CO CL

SYSTEM SWITCH

EM. HT

HEAT

OFF

COOL AUTO

T7147

REMOTE

COMFORT

ADJUST

MODULE

EM.HT. LED (RED)

CA1

CA2

CA3

CA4

CA5

AUX. HT. LED (RED)

AUXILIARY RELAY CONTACT

COM

LED1

LED2

EXISTING HVAC EQUIPMENT

L1 (HOT)

SYSTEM TRANSFORMER

REV.

VALVE

EM. HT.

RELAY

COMP.

AUXILIARY

HEAT

FAN

FAN SWITCH

L1 (HOT)

ON AUTO

HVAC EQUIPMENT TERMINAL STRIP

ECONOMIZER

(IF NO "C" TERMINAL)

24 VAC SECONDARY; MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE. WIRE O TO REVERSING VALVE FOR COOLING CHANGEOVER. WIRE B TO REVERSING VALVE FOR HEATING CHANGEOVER.

24 VAC ONLY.

63-4038—7 36

M4399

Fig. 39—T7300/Q7300D with 2-stage heat/1-stage cool heat pump system.

T7200/T7300/Q7300 WIRING DIAGRAMS

T7300 THERMOSTAT

AUX. HT

FAN

H1/C1

Q7300 HEAT PUMP SUBBASE

AUXILIARY RELAY CONTACTS

AUX. HT. LED (RED)

C/O CL

C/O HT

COM

LED1

LED2

SYSTEM SWITCH

EM. HT

HEAT

OFF

COOL AUTO

T7147

REMOTE

COMFORT

ADJUST

MODULE

24 VAC SECONDARY; MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE. REVERSING VALVE MAY BE SWITCHED FROM Y1 TO W1, OR FROM AN INTERNAL EQUIPMENT CONTROLLER, DEPENDING ON

MANUFACTURER AND SYSTEM. 24 VAC ONLY.

EM. HT. LED (RED)

CA1

CA2

CA3

CA4

CA5

EXISTING HVAC EQUIPMENT

HVAC EQUIPMENT TERMINAL STRIP

ECONOMIZER

SYSTEM TRANSFORMER

(IF NO "C" TERMINAL)

AUXILIARY HEAT 1

L1 (HOT)

M4398

EM. HT. RELAY

FAN

COOL 1

REV. VALVE

HEAT 1

FAN SWITCH

ON AUTO

L1 (HOT)

37 63-4038—7

T7200/T7300/Q7300 WIRING DIAGRAMS

Fig. 40—T7300/Q7300C with 2-stage heat/2-stage cool heat pump system using O or B terminal for reversing valve.

T7300 THERMOSTAT

H1/C1

AUX HT

FAN

Q7300 HEAT PUMP SUBBASE

CO HT

CO CL

SYSTEM SWITCH

EM. HT

HEAT

OFF

COOL

AUTO

T7147

REMOTE

COMFORT

ADJUST

MODULE

24 VAC SECONDARY; MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE. WIRE O TO REVERSING VALVE FOR COOLING CHANGEOVER. WIRE B TO REVERSING VALVE FOR HEATING CHANGEOVER.

24 VAC ONLY.

EM. HT. LE D(RED)

CA1

CA2

CA3

CA4

CA5

AUX. HT. LED (RED)

AUXILIARY RELAY CONTACT

Y1 Y2

COM

LED1

LED2

EXISTING HVAC EQUIPMENT

HVAC EQUIPMENT TERMINAL STRIP

ECONOMIZER

SYSTEM TRANSFORMER

(IF NO "C" TERMINAL)

REV.

VALVE

EM. HT.

RELAY

COMP. 1

COMP. 2

AUXILIARY

HEAT 1

FAN

L1 (HOT)

FAN SWITCH

M4400

L1 (HOT)

ON AUTO

63-4038—7 38

Fig. 41—T7300/Q7300D with 3-stage heat/2-stage cool heat pump system.

T7200/T7300/Q7300 WIRING DIAGRAMS

T7300 THERMOSTAT

FAN

H1/C1

Q7300 HEAT PUMP SUBBASE

SYSTEM SWITCH

EM. HT

HEAT

OFF

COOL AUTO

EM. HT. LED (RED)

AUX. HT. LED (RED)

CO CL

CO HT

EXISTING HVAC EQUIPMENT

HVAC EQUPIMENT TERMINAL STRIP

SYSTEM TRANSFORMER

(IF NO "C" TERMINAL)

EM. HT. RELAY

AUXILIARY HEAT 1

FAN

COOL 1

COOL 2

REV. VALVE

HEAT 1

HEAT 2

L1 (HOT)

CA1

CA2

T7147

REMOTE

COMFORT

ADJUST

MODULE

24 VAC SECONDARY; MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE. REVERSING VALVE MAY BE SWITCHED FROM Y1 TO W1, OR FROM AN INTERNAL EQUIPMENT CONTROLLER, DEPENDING ON

MANUFACTURER AND SYSTEM. 24 VAC ONLY.

CA3

CA4

CA5

AUXILIARY RELAY CONTACTS

COM

LED1

LED2

ECONOMIZER

L1 (HOT)

M4397

FAN SWITCH

ON AUTO

39 63-4038—7

T7200/T7300/Q7300 WIRING DIAGRAMS

Fig. 42—T7300/Q7300C,D with economizer package in 2-stage heat/1 stage cool heat pump system defeating economizer minimum position during unoccupied period.

T7300 THERMOSTAT

FAN

AUXILIARY RELAY CONTACTS

Q7300 HEAT PUMP SUBBASE

SYSTEM SWITCH

COM

EXISTING HVAC EQUIPMENT

L1 (HOT)

AUXILIARY

HEAT 1

4K2

3K1

2 1

4 5

COMP

HVAC EQUPIMENT TERMINAL STRIP

OPEN

YELLOW

BLACK

BROWN

FAN

RELAY

REV.

VALVE

5K1

1K1 1K2

OUTDOOR AIR CHANGEOVER SWITCH

4K1

RED

EM. HT HEAT OFF

COOL AUTO

EXISTING ECONOMIZER CONTROL PACKAGE

MODUTROL

MOTOR

MIXED AIR

TEMPERATURE

CONTROLLER

BLUE

RISE

MINIMUM POSITION POTENTIOMETER

LED1

LED2

(HOT)

63-4038—7 40

RED

4K1

5K1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND

OVERLOAD PROTECTION AS REQUIRED. 24 VAC SECONDARY. MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF

THERMOSTAT AND SUBBASE.

ENTHALPY CONTROL MAKES TERMINALS 2-1 ON ENTHALPY RISE AND 2-3 ON ENTHALPY FALL.

RELAY REQUIRED (R8222 OR SIMILAR).

ECONOMIZER MOTOR SPRING RETURNS CLOSED ANYTIME FAN IS NOT RUNNING.

24 VAC ONLY.

A3 TERMINAL AVAILABLE ON Q7300D MODEL ONLY.

VIOLET VIOLET

M4412

Fig. 43—T7300/Q7300F for 1-stage heat pump.

T7200/T7300/Q7300 WIRING DIAGRAMS

T7300 THERMOSTAT

REMOTE

COMFORT

ADJUST

MODULE

AUX.

HT.

FAN

T7147

Q7300 SUBBASE

CA1

CA2

CA3

CA4

CA5

K2 (AUX)

AUXILIARY RELAY CONTACT

COM

LED1

LED2

EXISTING HVAC EQUIPMENT

HVAC EQUIPMENT TERMINAL STRIP

ECONOMIZER

(IF NO "C" TERMINAL)

L1 (HOT)

SYSTEM TRANSFORMER

COMP. 1

FAN

COOL CHANGEOVER

L1 (HOT)

24 VAC SECONDARY; MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE. FIELD INSTALLED JUMPER.

24 VAC ONLY.

41 63-4038—7

M4419

T7200/T7300/Q7300 WIRING DIAGRAMS

Fig. 44—T7300/Q7300F for 1-stage heat/1-stage cool and 2-stage heat/1-stage cool heat pumps.

T7300 THERMOSTAT

H1/C1

AUX. HT.

FAN

T7147

REMOTE

COMFORT

ADJUST MODULE

Q7300 SUBBASE

CA1

CA2

CA3

CA4

CA5

AUXILIARY

RELAY CONTACT

EXISTING HVAC EQUIPMENT

HVAC EQUIPMENT

AUX. HT.

COM

LED1

LED2

LED (GREEN)

ECONOMIZER

TERMINAL STRIP

L1 (HOT)

SYSTEM TRANSFORMER

COMP. 1

COMP. 2

COOL CHANGEOVER

AUX. HEAT

FAN

L1 (HOT)

24 VAC SECONDARY; MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE. FIELD INSTALLED JUMPER.

24 VAC ONLY.

AVAILABLE ON Q7300F1017 AND Q7300F1033 ONLY.

63-4038—7 42

M4420

T7200/T7300/Q7300 WIRING DIAGRAMS

Fig. 45—Q7300L for 2-stage heating with three-position ML984A actuator/V50B valve and 1-stage cooling.

T7300 THERMOSTAT

FAN

HEAT LED

Q7300L

COOLING

RELAY

LOW SPEED FAN RELAY

HIGH SPEED FAN RELAY

COOL LED

1K RELAY

2K RELAY

3K RELAY

FAN

AUTO

4K1

1K1

2K1

2K2

3K1

5K1

3K2

EXISTING HVAC EQUIPMENT

(HOT)

180 Ω 2W

L1 (HOT)

ML984A VALVE ACTUATOR

PUMP INTERLOCK RELAY

DAMPER CONTROL RELAY

MICROPROCESSOR CONTROL

POWER SUPPLY

COMMUNICATION

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

INDEPENDENT FAN TRANSFORMER OPTIONAL. IF SINGLE TRANSFORMER IS USED, JUMPER FC TO R.

FOR SINGLE SPEED FAN, JUMPER GL AND GH.

180 Ω 2W RESISTOR MUST BE INSTALLED AS SHOWN.

REFER TO T7147 INSTRUCTIONS FOR APPROPRIATE CA TERMINAL CONNECTIONS. T7047 HAS T-T TERMINALS ONLY.

COMMUNICATION LINES

RS1

RS2

SUBBASE RELAY CONTROL AND COMMUNICATION (INCLUDES 4K AND 5K RELAYS)

AUTO SYSTEM SWITCHING

CA1

CA2

CA3

CA4

CA5

CA1

CA2

CA3

CA4

CA5

T7147A REMOTE

SENSOR AND OVERRIDE MODULE

M4377

43 63-4038—7

T7200/T7300/Q7300 WIRING DIAGRAMS

Fig. 46—Q7300L for single-stage conventional heating systems with single-stage cooling.

T7300 THERMOSTAT

FAN

HEAT LED

Q7300L

COOL LED

1K RELAY

2K RELAY

3K RELAY

FAN

AUTO

4K1

1K1

2K1

2K2

3K1

5K1

3K2

LOW SPEED FAN RELAY

HIGH SPEED FAN RELAY

EXISTING HVAC EQUIPMENT

L1 (HOT)

COOLING RELAY

DAMPER CONTROL RELAY

HEAT RELAY

MICROPROCESSOR CONTROL

POWER SUPPLY

COMMUNICATION

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

FOR SINGLE SPEED FAN JUMPER GL AND GH. REFER TO T7147 INSTRUCTIONS FOR APPROPRIATE CA TERMINAL CONNECTIONS. T7407 HAS T-T TERMINALS ONLY.

COMMUNICATION LINES

RS1

RS2

SUBBASE RELAY CONTROL AND COMMUNICATION (INCLUDES 4K AND 5K RELAYS)

AUTO SYSTEM SWITCHING

CA1

CA2

CA3

CA4

CA5

CA1

CA2

CA3

T7147A REMOTE

CA4

SENSOR AND

CA5

OVERRIDE MODULE

M4378

63-4038—7 44

Troubleshooting

Refer to Figs. 47 and 48 to troubleshoot problems with the thermostat and system.

Fig. 47—Troubleshooting chart to quickly isolate a display or fan problem.

SYMPTON POSSIBLE CAUSE ACTION

LCD TEMPERATURE DISPLAY IS --°.

Q7300 SWITCH 5 INCORRECTLY SET.

•

SYSTEM WITHOUT REMOTE SENSOR: CHECK THAT SWITCH 5 IS IN ON POSITION.

•

SYSTEM WITH REMOTE SENSOR: CHECK THAT SWITCH 5 IS IN OFF POSITION.

T7200/T7300/Q7300

TROUBLESHOOTING

INCOMPLETE CIRCUIT. CHECK WIRING FOR SHORTS OR OPENS

LCD IS BLANK.

ALL SEGMENTS OF LCD ARE DISPLAYED.

BATT DISPLAYED ON LOWER RIGHT LCD.

LCD DISPLAYS ----.

LCD HAS ONLY PARTIAL DISPLAY.

FAN DOES NOT RUN. Q7300 SWITCH 4 INCORRECTLY SET.

NO ac VOLTAGE TO THERMOSTAT.

THERMOSTAT IS IN TEST MODE.

THERMOSTAT HAS DETECTED LOW BATTERY VOLTAGE.

THERMOSTAT HAS NO PROGRAM.

FAULTY THERMOSTAT. REPLACE T7300.

BETWEEN THERMOSTAT AND REMOTE SENSOR.

CHECK POWER TO FURNACE OR AIR CONDITIONER.

• ON-OFF SWITCH

• FUSE OR CIRCUIT BREAKER

• LOOSE 24 VAC CONNECTION —AT THERMOSTAT —AT FURNACE/AIR CONDITIONER

• INCORRECT WIRING —CHECK WIRING DIAGRAM CHECK VOLTAGE AT SUBBASE.

• 20 TO 30 VOLTS BETWEEN PINS 1 AND 6 ON Q7300 9 PIN CONNECTOR (SEE FIG. 34). —REPLACE Q7300 IF NO VAC. —REPLACE THERMOSTAT IF VAC PRESENT.

PRESS CLOCK AND DAY KEYS AT THE SAME TIME. REPLACE THERMOSTAT IF REPEATED ATTEMPTS FAIL.

• CHECK BATTERY CONNECTIONS.

• REPLACE BATTERY.

• CHECK BATTERY (7.5 VDC).

• CHECK BATTERY CONNECTIONS.

• REPROGRAM THERMOSTAT.

• CHECK OPERATION. IF BATTERY OK AND THERMOSTAT LOOSES PROGRAM, REPLACE THERMOSTAT.

•

SET SWITCH 4 TO ON WHEN THERMOSTAT IS NOT REQUIRED TO TURN ON FAN IN HEATING.

•

SET SWITCH 4 TO OFF WHEN THERMOSTAT IS REQUIRED TO TURN ON THE FAN IN HEATING.

FAN DOES NOT STOP.

INOPERATIVE THERMOSTAT. CHECK FAN OPERATION:

HVAC SYSTEM OR THERMOSTAT PROBLEM.

• SET FAN SWITCH TO ON.

• SYSTEM SWITCH TO AUTO.

• PRESS 3 HOUR OCCUPIED KEY.

• WAIT AS LONG AS FIVE MINUTES AND FAN SHOULD START. FAN STILL DOES NOT RUN:

• USE OHM METER TO CHECK FOR CONTINUITY BETWEEN RC AND G ON THE SUBBASE. —IF ZERO, PROBLEM IS IN HVAC UNIT CONTROL SYSTEM.

•• CHECK FAN CONTROL RELAY CIRCUITS. —IF NOT ZERO, REPLACE THERMOSTAT.

REMOVE WIRE FROM G TERMINAL.

• IF FAN KEEPS RUNNING: —CHECK HVAC CONTROL WIRING. —CHECK FOR LATCHED FAN CONTACTOR, RELAY OR PLENUM SWITCH.

• IF FAN STOPS RUNNING: —PRESS CONT UNOC KEY. —CHECK THAT ROOM TEMPERATURE IS BETWEEN UNOC HEATING AND COOLING SETPOINTS. —WAIT FIVE MINUTES.

•• IF FAN KEEPS RUNNING, REPLACE THERMOSTAT.

•• IF FAN STOPS RUNNING, THERMOSTAT AND HVAC SYSTEM ARE OK.

45 63-4038—7

M4416

T7200/T7300/Q7300 TROUBLESHOOTING

Fig. 48—Troubleshooting chart to quickly isolate a HVAC problem.

SYMPTON POSSIBLE CAUSE ACTION

HVAC WILL NOT OPERATE.

NO ac VOLTAGE TO THERMOSTAT.

CHECK POWER TO FURNACE OR AIR CONDITIONER.

• ON-OFF SWITCH

• FUSE OR CIRCUIT BREAKER

• LOOSE 24 VAC CONNECTION —AT THERMOSTAT —AT FURNACE/AIR CONDITIONER

• INCORRECT WIRING —CHECK WIRING DIAGRAM CHECK VOLTAGE AT SUBBASE.

• 20 TO 30 VOLTS BETWEEN PINS 1 AND 6 ON Q7300 9 PIN CONNECTOR (SEE FIG. 34). —REPLACE Q7300 IF NO VAC. —REPLACE THERMOSTAT IF VAC PRESENT.

HEATING SYSTEM WILL NOT TURN ON.

HEATING SYSTEM WILL NOT TURN OFF.

COOLING SYSTEM WILL NOT TURN ON.

CHECK HEATING SYSTEM:

• WAIT MINIMUM OFF TIME (2 MIN. OR 4 MIN. FOR HEAT PUMP).

• JUMPER RH TO W1 (R TO Y1 IF HEAT PUMP) AT THERMOSTAT OR EQUIPMENT TERMINAL STRIP. —NO HEAT, THERMOSTAT OK, CHECK HEATING SYSTEM. —HEAT COMES ON, HEATING SYSTEM, CHECK THERMOSTAT. THERMOSTAT CHECKOUT:

• SET SYSTEM SWITCH TO HEAT OR AUTO.

• SPACE TEMPERATURE IS LOWER THAN HEAT SETPOINT (IF NOT, RAISE HEAT SETPOINT TO 5°F ABOVE SPACE TEMPER TURE). —HEAT COMES ON, THERMOSTAT AND HEATING SYSTEM OK. —NO HEAT, REPLACE THERMOSTAT.

•• HEAT ON, THERMOSTAT AND HEATING SYSTEM OK.

•• NO HEAT, REPLACE Q7300.

CHECK HEATING SYSTEM:

• WAIT MINIMUM ON TIME (2 MIN. OR 4 MIN. FOR HEAT PUMP).

• REMOVE RH (R IF HEAT PUMP) WIRE FROM TERMINAL. —HEAT STAYS ON, THERMOSTAT OK, CHECK HEATING SYSTEM. —HEAT STOPS, HEATING SYSTEM OK, CHECK THERMOSTAT. THERMOSTAT CHECKOUT:

• SET SYSTEM SWITCH TO HEAT OR AUTO.

• SPACE TEMPERATURE IS HIGHER THAN HEAT SETPOINT (IF NOT, LOWER HEAT SETPOINT TO 5°F BELOW SPACE TEMPER TURE). —HEAT TURNS OFF, THERMOSTAT AND HEATING SYSTEM OK. —HEAT STILL ON, REPLACE THERMOSTAT.

•• HEAT TURNS OFF, THERMOSTAT AND HEATING SYSTEM OK.

•• HEAT ON, REPLACE Q7300.

CHECK COOLING SYSTEM:

• WAIT MINIMUM 4 MIN. OFF TIME.

• JUMPER RC (R IF HEAT PUMP) TO Y1 AT THERMOSTAT OR EQUIPMENT TERMINAL STRIP. —COOL OFF, THERMOSTAT OK, CHECK COOLING SYSTEM. —COOL ON, COOLING SYSTEM OK, CHECK THERMOSTAT. THERMOSTAT CHECKOUT:

• SET SYSTEM SWITCH TO COOL OR AUTO.

• SPACE TEMPERATURE IS HIGHER THAN COOL SETPOINT (IF NOT, LOWER COOL SETPOINT TO 5°F BELOW SPACE TEMPER TURE). —COOL COMES ON, THERMOSTAT AND COOLING SYSTEM OK. —NO COOL, REPLACE THERMOSTAT.

•• COOL ON, THERMOSTAT AND COOLING SYSTEM OK.

•• COOL TURNS OFF, REPLACE Q7300.

COOLING SYSTEM WILL NOT TURN OFF.

63-4038—7 46

CHECK COOLING SYSTEM:

• WAIT MINIMUM 2 MIN. ON TIME.

• REMOVE RC (R IF HEAT PUMP) WIRE FROM TERMINAL. —COOL ON, THERMOSTAT OK, CHECK COOLING SYSTEM. —COOL OFF, COOLING SYSTEM OK, CHECK THERMOSTAT. THERMOSTAT CHECKOUT:

• SET SYSTEM SWITCH TO COOL OR AUTO.

• SPACE TEMPERATURE IS LOWER THAN COOL SETPOINT (IF NOT, RAISE COOL SETPOINT TO 5°F ABOVE SPACE TEMPER TURE). —COOL TURNS OFF, THERMOSTAT AND COOLING SYSTEM OK. —COOL STILL ON, REPLACE THERMOSTAT.

•• COOL TURNS OFF, THERMOSTAT AND COOLING SYSTEM OK.

•• COOL ON, REPLACE Q7300.

M4417

47 63-4038—7

FOR CANADIAN EMI REGULATIONS

Class B

This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the

Radio Interference Regulations of the Canadian Department of Communications.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux appareils

numériques de la Class B prescrites dans le Réglement sur le brouillage radioélectrique édicté par le ministère des

Communications du Canada.

Home and Building Control Home and Building Control Helping You Control Your World

Honeywell Inc. Honeywell Limited—Honeywell Limitée 1985 Douglas Drive North 155 Gordon Baker Road Golden Valley, MN 55422 North York, Ontario

M2H 2C9

63-4038—7 48

Printed in U.S.A. www.honeywell.com/building/components

Honeywell T7200, T7300, Q7300 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual