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.
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.
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).
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
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.
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.