Honeywell Q7300A Manual de usuario

X-XX UL

INSTALLATION INSTRUCTIONS

® U.S. Registered Trademark

Q7300A,C,D,G Series 2000

Commercial Thermostat Subbases

APPLICATION

The Q7300 Thermostat Subbases are used with T7300

Thermostats to provide electronic control of commercial

24 Vac single or multistage heat pump or conventional

heating and cooling systems. Select models have termi-

nals for LEDs and remote temperature sensors. Refer to

Table 1. All Q7300 Thermostat Subbases require a

common wire to the supply power.

Table 1. Description of Q7300 Subbases.

aDepends on model.

RECYCLING NOTICE

If this control is replacing a control that contains

mercury in a sealed tube, do n

place your old

control in the trash

Contact your local waste management authority for

instructions regarding recycling and the proper

disposal of the old thermostat.

INSTALLATION

When Installing this Product…

1. Read these instructions carefully. Failure to follow

the instructions can damage the product or cause a

hazardous condition.

2. Check the ratings given in the instructions and on

the product to make sure the product is suitable for

your application.

3. Installer must be a trained, experienced service

technician.

4. After completing installation, use these instructions

to check out the product operation.

Location

Subbase 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. 1.

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

—drafts, or dead spots behind doors and in corners.

—hot or cold air from ducts.

—radiant heat from sun or appliances.

—concealed pipes and chimneys.

—unheated (uncooled) areas such as an outside wall

behind the thermostat.

Subbase with Remote-Mounted

Temperature Sensor(s)

If only the remote-mounted temperature sensor(s) is used

to sense and control room temperature, then install the

thermostat in an area that is accessible for setting and

adjusting the temperature and settings.

If both the subbase and remote-mounted temperature

sensor(s) are used to sense and control room tempera-

ture, then install the subbase about 5 ft above the floor in

an area with good air circulation.

Maximum Stages

Model Applications Thermostat Required Heat Cool Hookup Drawing

Q7300A Conventional T7300D, F 2 2 9-12

Q7300C Heat Pump T7300E, F 3 2 13-15

Q7300D Heat Pump T7300E, F 3 2 16

Q7300G Conventional T7300D, F 3 3 17

62-0135

62-0135 2

Q7300A,C,D,G SERIES 2000 COMMERCIAL THERMOSTAT SUBBASES

Fig. 1. Typical location of thermostat or remote-mounted sensor.

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. 1.

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

—drafts, or dead spots behind doors and in corners.

—hot or cold air from ducts.

—radiant heat from sun or appliances.

—concealed pipes and chimneys.

—unheated (uncooled) areas such as an outside wall

behind the thermostat.

If more than one remote sensor are required, they must be

arranged in a temperature averaging network consisting of

two, three, four, five or nine sensors. See Fig. 2 through 6.

IMPORTANT

To avoid electrical interference, which can cause

erratic performance, keep wiring runs as short as

possible and do not run thermostat wires

adjacent to the line voltage electrical distribution

systems. Use shielded cable (Belden type 8762

or equivalent for 2-wire and Belden type 8772 or

equivalent for 3-wire). The cable shield must be

grounded only at the controlled equipment case.

Fig. 2. Two T7047G Sensors providing

temperature averaging network for

T7300/Q7300 Thermostat/Subbase.

Fig. 3. Two T7047C Sensors and one T7047G Sensor

providing temperature averaging network for

T7300/Q7300 Thermostat/Subbase.

Fig. 4. Four T7047C Sensors providing

temperature averaging network for

T7300/Q7300 Thermostat/Subbase.

5 FEET

(1.5 METERS)

YES

M4823A

M4838

SUBBASE

T7047GT7047G

M4839

SUBBASE

T7047C

T7047C TT

T7047G

M4840

SUBBASE

T7047C

62-0135

Q7300A,C,D,G SERIES 2000 COMMERCIAL THERMOSTAT SUBBASES

Fig. 5. Five T7047G Sensors providing

temperature averaging network for

T7300/Q7300 Thermostat/Subbase.

Fig. 6. Nine T7047C Sensors providing

temperature averaging network for

T7300/Q7300 Thermostat/Subbase.

Mounting Subbase

The subbase mounts horizontally on the wall or a 2 in. x 4 in.

wiring box. Position the subbase horizontally on the wall or

on a 2 in. x 4 in. wiring box.

쐃Position and level the subbase or wallplate (for

appearance only). The thermostat functions properly

even when not level.

쐇Use a pencil to mark the mounting holes. See Fig. 7.

쐋Remove the subbase or wallplate from the wall and

drill two 3/16 inch holes in the wall (if drywall) as

marked. For firmer material such as plaster or wood,

drill two 7/32 inch holes. Gently tap anchors (pro-

vided) into the drilled holes until flush with the wall.

쐏Position the subbase over the holes, pulling wires

through the wiring opening.

쐄Loosely insert the mounting screws into the holes.

쐂Tighten mounting screws.

Fig. 7. Mounting the subbase.

WIRING SUBBASE

All wiring must comply with local electrical codes and

ordinances. Follow equipment manufacturer wiring

instructions when available. Refer to Fig. 9 through 17 for

typical hookups. A letter code is located near each

terminal for identification.

CAUTION

Disconnect power before wiring to prevent

electrical shock or equipment damage.

쐃Loosen the terminal screws on the subbase and

connect the system wires. See Fig. 8.

IMPORTANT

Use 18-gauge, solid-conductor color-coded

thermostat cable for proper wiring. If using 18-

gauge stranded wire, no more than ten wires can

be used. Do not use larger than 18-gauge wire.

쐇Securely tighten each terminal screw.

쐋Push excess wire back into the hole.

쐏Plug the hole with nonflammable insulation to

prevent drafts from affecting the thermostat.

Fig. 8. Proper wiring technique.

M4841

SUBBASE

T7047G

M4842

SUBBASE

T7047C

M4826

FOR WRAPAROUND

INSERTION STRIP

7/16 IN. (11 MM).

FOR STRAIGHT

INSERTION STRIP

5/16 IN. (8 MM).

WIRES

THROUGH WALL

WALL

ANCHORS

(2)

M10237

LEDS

MOUNTING

HOLES

MOUNTING

SCREWS

62-0135 4

Q7300A,C,D,G SERIES 2000 COMMERCIAL THERMOSTAT SUBBASES

Typical Wiring Hookups

Fig. 9. Typical hookup of T7300D,F/Q7300A in one-stage heat and

one-stage cool conventional system with two transformers.

Fig. 10. Typical hookup of T7300D,F/Q7300A in two-stage heat and

one-stage cool conventional system with two transformers.

(HOT)

M10230

FAN

RELAY

Y1 G X

SUBBASE

HEAT

RELAY 1

RHW1

(HOT)

COMPRESSOR

CONTACTOR 1

HEATING

TRANSFORMER

COOLING

TRANSFORMER

HEAT

RELAY 2

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND

OVERLOAD PROTECTION AS REQUIRED.

JUMPER RC TERMINAL TO RH TERMINAL WHEN INSTALLED

ON A SYSTEM WITH ONE TRANSFORMER.

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

JUMPER RC TERMINAL TO RH TERMINAL WHEN INSTALLED ON A SYSTEM WITH ONE TRANSFORMER.

CONNECT GND TO EARTH GROUND.

INSTALL FIELD JUMPER BETWEEN X4 AND X TO POWER LEDS.

M4939A

(HOT)

FAN

RELAY

Y1 G X

SUBBASE

HEAT

RELAY

RH C1 T

T7147 REMOTE COMFORT ADJUST MODULE

GND

W1 C2

(HOT)

COMPRESSOR

CONTACTOR

C4 C3C5

CA1 T

CA2

CA4 CA3CA5

HEATING

TRANSFORMER

COOLING

TRANSFORMER

X3 X1X4

EQUIPMENT

MONITOR 2

EQUIPMENT

MONITOR 1

62-0135

Q7300A,C,D,G SERIES 2000 COMMERCIAL THERMOSTAT SUBBASES

Fig. 11. Typical hookup of T7300D,F/Q7300A in two-stage heat and

two-stage cool conventional system with two transformers.

Fig. 12. Typical hookup of T7300D,F/Q7300A in two-stage heat and

two-stage cool conventional system with two transformers.

(HOT)

M10236

FAN

RELAY

Y1 G X

SUBBASE

HEAT

RELAY 1

RHW1

(HOT)

COMPRESSOR

CONTACTOR 1

COMPRESSOR

CONTACTOR 2

HEATING

TRANSFORMER

COOLING

TRANSFORMER

HEAT

RELAY 2

COOL

DAMPER HEAT

DAMPER

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

JUMPER RC TERMINAL TO RH TERMINAL WHEN INSTALLED ON A SYSTEM WITH ONE TRANSFORMER.

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

JUMPER RC TERMINAL TO RH TERMINAL WHEN INSTALLED ON A SYSTEM WITH ONE TRANSFORMER.

USE A1 AND A2 WHEN THE CONTACTS SHOULD BE NORMALLY CLOSED IN OCCUPIED MODE. USE A2 AND A3 WHEN

THE CONTACTS SHOULD BE NORMALLY OPEN IN OCCUPIED MODE.

CONNECT GND TO EARTH GROUND.

INSTALL FIELD JUMPER BETWEEN X4 AND X TO POWER LEDS.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

M4945A

(HOT)

FAN

RELAY

Y1GX

SUBBASE

HEAT

RELAY 1

RH C1 T

T7147 REMOTE COMFORT ADJUST MODULE

GND

W1 C2

(HOT)

COMPRESSOR

CONTACTOR 1

C4 C3

CA1 T

CA2

CA4 CA3

CA5

COMPRESSOR

CONTACTOR 2

HEATING

TRANSFORMER

COOLING

TRANSFORMER

A2 A3A1X3 X1X4

EQUIPMENT

MONITOR 2

EQUIPMENT

MONITOR 1

ECONOMIZER

AS AS

DISCHARGE

AIR

SENSOR

HEAT

RELAY 2

62-0135 6

Q7300A,C,D,G SERIES 2000 COMMERCIAL THERMOSTAT SUBBASES

Fig. 13. Typical hookup of T7300E,F/Q7300C in two-stage heat and one-stage cool heat pump system.

Fig. 14. Typical hookup of T7300E,F/Q7300C in three-stage heat and two-stage cool heat pump system.

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

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

USE A1 AND A2 WHEN THE CONTRACT SHOULD BE NORMALLY CLOSED IN OCCUPIED MODE.

CONNECT GND TO EARTH GROUND.

INSTALL FIELD JUMPER BETWEEN X4 AND X TO POWER LEDS.

M4946A

(HOT)

Y1 O G

SUBBASE

EM. HT.

RELAY

RC1 T

T7147 REMOTE COMFORT ADJUST MODULE

GND

BC2

COMPRESSOR

CONTACTOR 1

C4 C3C5

CA1 T

CA2

CA4 CA3CA5

TRANSFORMER

HEAT

RELAY 2

HEAT

CHANGEOVER

VALVE

X3 X1X4

EQUIPMENT

MONITOR 2

EQUIPMENT

MONITOR 1

FAN

RELAY

COOL

CHANGEOVER

VALVE

A2A1

AS AS

DISCHARGE

AIR

SENSOR

ECONOMIZER

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

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION INSTRUCTIONS.

USE A1 AND A2 WHEN THE CONTACTS ARE NORMALLY CLOSE IN OCCUPIED MODE.

CONNECT GND TO EARTH GROUND.

INSTALL FIELD JUMPER BETWEEN X4 AND X POWER LEDS.

M4947A

(HOT)

Y1 O G

SUBBASE

EM. HT.

RELAY

RC1 T

T7147 REMOTE COMFORT ADJUST MODULE

GND

BC2

COMPRESSOR

CONTACTOR 1

C4 C3C5

CA1 T

CA2

CA4 CA3CA5

TRANSFORMER

HEAT

RELAY 3

HEAT

CHANGEOVER

VALVE

X3 X1X4

EQUIPMENT

MONITOR 2

EQUIPMENT

MONITOR 1

FAN

RELAY

COOL

CHANGEOVER

VALVE

A2A1

AS AS

DISCHARGE

AIR

SENSOR

COMPRESSOR

CONTACTOR 2

ECONOMIZER

62-0135

Q7300A,C,D,G SERIES 2000 COMMERCIAL THERMOSTAT SUBBASES

Fig. 15. Typical hookup of T7300E,F/Q7300C in three-stage heat and two-stage cool heat pump system.

Fig. 16. Typical hookup of T7300E,F/Q7300D in three-stage heat and two-stage cool heat pump system.

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

EM. MODE IS ON CONTINUOUSLY IN EMERGENCY HEAT MODE.

EM. HT. RELAY CYCLES IN EMERGENCY HEAT MODE.

M4940A

HEAT

RELAY 3

(HOT)

YO G

SUBBASE

EM. HT.

RELAY

COMPRESSOR

CONTACTOR 1

COMPRESSOR

CONTACTOR 2

TRANSFORMER

W3E

HEAT

RELAY 2

HEAT

CHANGEOVER

VALVE

X1 X2L

EQUIPMENT

MONITOR 2

EQUIPMENT

MONITOR 1

FAN

RELAY

COOL

CHANGEOVER

VALVE

EM.

MODE

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

USE A1 AND A2 WHEN THE CONTACTS SHOULD BE NORMALLY CLOSED IN OCCUPIED MODE. USE A2 AND A3 WHEN THE

CONTACTS SHOULD BE NORMALLY OPEN IN OCCUPIED MODE.

CONNECT GND TO EARTH GROUND.

INSTALL FIELD JUMPER BETWEEN X4 AND X TO POWER LEDS.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

M4948A

HEAT

RELAY 3

(HOT)

FAN

RELAY

Y1 G

SUBBASE

X R C1 T

T7147 REMOTE COMFORT ADJUST MODULE

GND

W1 C2

COMPRESSOR

CONTACTOR 1

C4 C3C5

CA1 T

CA2

CA4 CA3CA5

COMPRESSOR

CONTACTOR 2

TRANSFORMER

W3E

HEAT

RELAY 2

EM. HT.

RELAY

A2 A3A1X3 X1X4

EQUIPMENT

MONITOR 2

EQUIPMENT

MONITOR 1

ECONOMIZER

AS AS

DISCHARGE

AIR

SENSOR

HEAT

RELAY 1

62-0135 8

Q7300A,C,D,G SERIES 2000 COMMERCIAL THERMOSTAT SUBBASES

Home and Building Control

Honeywell Limited-Honeywell Limitée

155 Gordon Baker Road

North York, Ontario

M2H 2C9

62-0135 J.H. Rev. 12-96

Fig. 17. Typical hookup of T7300D,F/Q7300G in three-stage heat and three-stage cool conventional system.

Mounting Thermostat on Subbase

Mount the thermostat on the subbase after the subbase is

installed.

쐃Engage tabs at the top of the thermostat and

subbase. Fig. 18.

쐇Press lower edge of case to latch.

NOTE: To remove the thermostat from the wall,

first pull out at the bottom of the thermo-

stat; then remove the top.

IMPORTANT

Refer to the thermostat installation instructions for

Installer Setup, Settings, Installer Self-Test and

Troubleshooting information.

Fig. 18 Mounting thermostat on subbase.

M4824A

PRESS LOWER EDGE OF CASE TO LATCH.

ENGAGE TABS AT TOP OF THERMOSTAT AND SUBBASE OR WALLPLATE.

Home and Building Control

Honeywell Inc.

Honeywell Plaza

P.O. Box 524

Minneapolis, MN 55408-0524

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

JUMPER RC TERMINAL TO RH TERMINAL WHEN INSTALLED ON A SYSTEM WITH ONE TRANSFORMER.

USE A1 AND A2 WHEN THE CONTACTS SHOULD BE NORMALLY CLOSED IN OCCUPIED MODE. USE A2 AND A3 WHEN CONTACTS

SHOULD BE NORMALLY OPEN IN OCCUPIED MODE.

CONNECT GND TO EARTH GROUND.

INSTALL FIELD JUMPER BETWEEN X4 AND X TO POWER LEDS.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

M4949A

HEAT

RELAY 3

(HOT)

FAN

RELAY

Y1 G X

SUBBASE

RC RH C1 T

T7147 REMOTE COMFORT ADJUST MODULE

GND

W1 C2

(HOT)

COMPRESSOR

CONTACTOR 1

C4 C3C5

CA1 T

CA2

CA4 CA3CA5

COMPRESSOR

CONTACTOR 2

HEATING

TRANSFORMER

COOLING

TRANSFORMER

W3Y3

HEAT

RELAY 2

COMPRESSOR

CONTACTOR 3

A2 A3A1X3 X1X4

EQUIPMENT

MONITOR 2

EQUIPMENT

MONITOR 1

ECONOMIZER

AS AS

DISCHARGE

AIR

SENSOR

HEAT

RELAY 1

www.honeywell.com/building/components

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