Honeywell C7660 Catalog Page

C7660
Selectable Temperature Sensor

FOR ECONOMIZERS

FEATURES

• Senses temperature of outdoor air and provides a
signal to economizer control with OK or not OK to
economize.

• Selectable dip switch provides 8 change over
temperature options.

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

• Provides 4 OR 20 mA output signal to economizer
control; At 4 mA not OK to economize, 20 mA OK to
economize.

• Highly accurate microprocessor control.

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

• Replaces C7650 temperature sensors and the control
function of temperature change over in the economizer
control.

PRODUCT DATA

GENERAL

C7660 Selectable Temperature Sensor is used with the
W7459, W7215, W7212, W7213 and W7214 Economizer
Controls. The economizer controls are mounted on an M7415/
M7215 Actuator. They permit the use of outdoor air as the first
stage of cooling in heating, ventilating and air conditioning
(HVAC) systems.

The C7660 Selectable Temperature Sensor is only to be used
with single temperature change over with the sensor located
in the outdoor air.

Contents

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

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

Specifications.................................................................... 1

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

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

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

63-2670EF-01

C7660 SELECTABLE TEMPERATURE SENSOR

SPECIFICATIONS

Model: C7660 Selectable Temperature Sensor

Case: Duct mount

Temperature Sensing Element: Thermistor

Output Signal: 4mA not OK to economize, 20 mA OK to
economize

Operating Ambient Temperature Range: -40° to 149° F

(-40° to 65° C).

Shipping Temperature Range: -40° to 149° F (-40° to

65° C).

9/16
(14)

1 (25)

5/16 (8)

3-5/32

(80)

2-3/4
(70)

7/32

(6)

ON

1 2 3

OFF

+

–

3-7/8 (96)

M27634

Supply Voltage: Power to sensor is supplied through

economizer or if not used with an economizer, logic power
input is 21.6 vdc ± 1.5 vdc.

Electrical Connections: Two 1/4 in. (6.4 mm) quick connect

terminals.

Approval: Underwriters Laboratories Inc. Flammability

Rating UL94-5V

Dimensions: See Fig. 1

Hysteresis: Hysteresis +/- 1F; Economizer Cut-in 1F below

setpoint, Cut-out 1F above setpoint

Accuracy: ± 1° F

Fig. 1. C7660 Selectable 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.

5. Verify dip switch settings match desired changeover

outside air temperature.

6. Verify polarity of wiring connections from sensor to

controller is correct.

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 Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).

2. Honeywell Customer Care

1885 Douglas Drive North

Minneapolis, Minnesota 55422-4386
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Toronto, 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.

63-2670EF—01 2