Honeywell C7650A User Manual

C7650A

Solid State Temperature Sensor

PRODUCT DATA

FEATURES

• Senses temperature of outdoor air.

• Long lasting thermistor sensing element is accurate and stable over time.

• When temperature of outdoor air increases, the outdoor air damper is closed to a preset minimum position.

• When temperature of outdoor air is low, the outdoor air damper is opened to reduce the cooling load in the building.

•Provides 10 to 20 mA output signal to W7459 Solid State Economizer Control; setpoint is located on solid state economizer control.

GENERAL

C7650A Solid State Thermistor Sensor is used with the W7459 Solid State Economizer Control Package. The W7459 Solid State Economizer Control Package is usually mounted on an M7405/M7415 Actuator. It permits the use of outdoor air as the first stage of cooling in heating, ventilating and air conditioning (HVAC) systems. The application is for differential or single temperature economizer control on HVAC equipment up to approximately 20 tons.

• Sensor is enclosed in a rugged, corrosion-resistant glass-fiber reinforced plastic case.

• Compact size and lightweight construction provide easy mounting in HVAC rooftop unit.

Contents

General ............................................................................... 1

Features .............................................................................. 1

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

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

Installation ........................................................................... 2

Operation ............................................................................ 3

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C7650A SOLID STATE TEMPERATURE SENSOR

SPECIFICATIONS

(8)

Model:

C7650A Solid State Temperature Sensor.

Case:

Duct mount.

Temperature Sensing Element:

Thermistor.

Output Signal:

10 to 20 mA current signal; increases from 10 mA to 20 mA as temperature decreases.

Operating Ambient Temperature Range:

+40°F to +100°F (+4°C to +38°C).

Shipping Temperature Range:

-40°F to +150°F (-40°C to +66°C).

Maximum Power Consumption:

0.45 VA.

Supply Voltage:

15 to 23 Vdc.

Electrical Connections:

Tw o 1/4 in. (6.5 mm) quick connect terminals.

Approval:

Underwriters Laboratories Inc. Flammability Rating: UL94-5V.

Dimensions:

See Fig. 1.

(14)

1 (25)

(80)

2 (70)

32 (6)

3 4

3 (96)

M9096

Fig. 1. C7650A Thermistor Temperature Sensor

Dimensions in in. (mm).

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

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.

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 (check 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.

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