Owner's Manual
Page 1
... Honeywell Inc. • All Rights Reserved X-XX UL 69-0896-1 Location and Mounting (Fig. 1) Mount the sensor where: • setting can measure the true outdoor ambient temperature. • surface is flat. • the wire distance between the C7089 and W8900 is less than 200 feet. C7089A Outdoor Sensor APPLICATION INSTALLATION INSTRUCTIONS INSTALLATION The C7089 Outdoor Sensor is...
... Honeywell Inc. • All Rights Reserved X-XX UL 69-0896-1 Location and Mounting (Fig. 1) Mount the sensor where: • setting can measure the true outdoor ambient temperature. • surface is flat. • the wire distance between the C7089 and W8900 is less than 200 feet. C7089A Outdoor Sensor APPLICATION INSTALLATION INSTRUCTIONS INSTALLATION The C7089 Outdoor Sensor is...
Owner's Manual
Page 2
...to assure proper operation. If the leadwire provided with the C7089 is not possible. Pigtail wiring can cause erratic system operation. Failure to the GND terminal on the W8900 Remote Module. b. a. C7089 OUTDOOR SENSOR CAUTION Disconnect the power supply before connecting the wiring to... a hole at least one foot away from a sensor can occur as motors, line starters, lightning ballasts, and large power distribution...
...to assure proper operation. If the leadwire provided with the C7089 is not possible. Pigtail wiring can cause erratic system operation. Failure to the GND terminal on the W8900 Remote Module. b. a. C7089 OUTDOOR SENSOR CAUTION Disconnect the power supply before connecting the wiring to... a hole at least one foot away from a sensor can occur as motors, line starters, lightning ballasts, and large power distribution...
Owner's Manual
Page 3
...displayed when the CHECK key is pressed. The W8900 Remote Module in turn sends a signal to 3824 Fig. 3. C7089 OUTDOOR SENSOR OPERATION The C7089 Outdoor Sensor converts outdoor ambient temperature to a resistance that the resistance increases as the temperature increases. OHM RESISTANCE 3900 3800 3700 ...) (38) (49) (60) (79) (°C ) TEMPERATURE 1 RESISTANCE INCREASES 4.84 OHMS PER 1°F CHANGE OR 8.7 OHMS PER 1°C CHANGE. The C7089 has a positive temperature coefficient (PTC), which means that the W8900 Remote Module can interpret. C7089A sensor resistance vs.
...displayed when the CHECK key is pressed. The W8900 Remote Module in turn sends a signal to 3824 Fig. 3. C7089 OUTDOOR SENSOR OPERATION The C7089 Outdoor Sensor converts outdoor ambient temperature to a resistance that the resistance increases as the temperature increases. OHM RESISTANCE 3900 3800 3700 ...) (38) (49) (60) (79) (°C ) TEMPERATURE 1 RESISTANCE INCREASES 4.84 OHMS PER 1°F CHANGE OR 8.7 OHMS PER 1°C CHANGE. The C7089 has a positive temperature coefficient (PTC), which means that the W8900 Remote Module can interpret. C7089A sensor resistance vs.
Owner's Manual
Page 4
... the temperature reading. Then verify sensor accuracy with the temperature/resistance curve of five minutes before reading. Home and Building Control Honeywell Inc. 1985 Douglas Drive Golden Valley, MN 55422 Home and Building Control Honeywell Limited-Honeywell Limitée 740 Ellesmere Road ...Scarborough, Ontario M1P 2V9 69-0896-1 J.H. To verify the resistance of the sensor, remove one wire from one of the C7089 wiring ...
... the temperature reading. Then verify sensor accuracy with the temperature/resistance curve of five minutes before reading. Home and Building Control Honeywell Inc. 1985 Douglas Drive Golden Valley, MN 55422 Home and Building Control Honeywell Limited-Honeywell Limitée 740 Ellesmere Road ...Scarborough, Ontario M1P 2V9 69-0896-1 J.H. To verify the resistance of the sensor, remove one wire from one of the C7089 wiring ...