Honeywell C7089U1006 VisionPRO Outdoor Temperature Sensor Instruction Manual
- October 27, 2023
- Honeywell
Table of Contents
ElectronicAircleaners.com
C7089 Outdoor Sensor
(USE WITH TH8000 AND TH7000 THERMOSTATS)
INSTALLATION INSTRUCTIONS
APPLICATION
This C7089 Outdoor Sensor is used with theTH8000 and TH7000 Thermostat families.
SPECIFICATIONS
Operating Ambient Temperature Range: -40 to 120°F (-40 to 49°C).
Display Range: -40 to 127°F (-40 to 53°C).
Sensor Accuracy: +/-1 5°F at 70°F (+1-.84 at 21°C)
Operating Relative Humidity: 5% to 95% non-condensing.
Dimensions in in. (mm): 2-1/4 (57) x 3/8 (10) with 60 (1524) leadwires.
INSTALLATION
When Installing this Product…
- Read these instructions carefully. Failure to follow them could damage the product or cause a hazard-ous condition.
- Check the ratings given in the instructions and on the product to make sure the product is suitable for your application.
- Installer must be a trained, experienced service technician.
- After installation is complete, check out product operation as provided in these instructions.
CAUTION
Electrical Shock Hazard. Can cause electrical shock or equipment damage.
Disconnect power supply before connecting wiring.
Location and Mounting (Fig. 1)
Mount the sensor where:
- cannot tamper with settings.
- there is good air circulation.
- it can measure true outdoor ambient temperature.
- surface is flat.
- wire distance between C7089 and thermostat is less than 200 feet.
Do not mount the sensor:
- in direct sunlight.
- where hot or cold air blows on the sensor. Discharge line from an outdoor compressor unit, vent or fan causes inaccurate temperature readings.
- where snow, ice or debris can cover it.
Use the following steps to mount the sensor:
- Remove the sensor from the mounting clip.
- Mark the area on the location selected for mounting the sensor mounting clip.
- Mount the clip. Fig. 1. Typical locations for outdoor sensor.
Wiring
CAUTION
Electrical Interference (Noise) Hazard. Can cause erratic system operation.
Keep wiring at least one foot away from large inductive loads such as motors,
line starters, lighting ballasts and large power distribution panels. Use
shielded cable to reduce interference when rerouting is not possible.
IMPORTANT Erratic temperature readings from a sensor can occur as a
result of any of the wiring practices described below. Avoid these practices
to assure correct operation. Use shielded cable to reduce interference if
rerouting of sensor wiring is not possible.
— Be sure wires have a cable separate from the Thermostat cable. — Do not
route temperature sensor wiring with building power wiring, next to control
contactors or near light dimming circuits, electric motors or welding
equipment. — Avoid poor wiring connections. — Avoid intermittent or missing
building earth ground.
CAUTION
Electrical Shock Hazard. Can cause electrical shock or equipment damage.
Disconnect power supply before connecting wiring.
Wiring must comply with applicable codes, ordinances and regulations:
- Wire the C7089 Outdoor Sensor to S1 and S2 terminals on the thermostat. If leadwire provided with C7089 is not long enough (60 in.), run a cable to a hole at C7089 location. a. Using color-coded, 18-gauge thermostat wire is recommended. For example of general wiring of C7089, see Fig. 2. b. Pigtail wiring can be used.
- Mount C7089 in its mounting clip.
- Plug wiring hole using nonhardening caulk or putty
USE APPROPRIATE MOUNTING MEANS FOR THE A TYPE OF STRUCTURE.
PLUG WIRING HOLE WITH NONHARDENING CAULK OR PUTTY. M19970
Fig. 2. Wiring C7089 Outdoor Sensor to thermostat.
OPERATION
Once installed and the Thermostat Installer Setup Number 0340 is set to 1 or 2, the outside temperature can be displayed on the thermostat. See Fig. 3.
Fig. 3. Outside temperature reading on TH8000 Series Thermostat.
The C7089 Outdoor Sensor converts outdoor ambient temperature to a resistance
that the thermostat can interpret.
The C7089 has a negative temperature coefficient (TC), which means that
resistance decreases as the temperature increases. See Table I.
CHECKOUT
Allow C7089B Outdoor Sensor to absorb outdoor air for a minimum of twenty
minutes before taking a reading.
With an accurate thermometer WI °F [0.5°C]) measure the temperature at the
sensor location, allowing time for the thermometer to stabilize before
reading.
To verify sensor resistance, remove one wire from one of the C7089 60-in.
leadwires. Use an ohmmeter to measure the resistance across the sensor. Then
verify the sensor accuracy with the temperature/resistance in Table 1.
CALIBRATION
The C7089 Outdoor Sensor is calibrated at the factory and can-not be
recalibrated in the field.
Table 1. Sensor Resistance at Outdoor Temperature .
| Outdoor Temperature | Ohms of Resistance |
|---|---|
| °F | °C |
| -20 | -29. |
| -18 | -28. |
| -16 | -27. |
| -14 | -26. |
| -12 | -24. |
| -10 | -23. |
| 8 | -22. |
| 6 | -21. |
| -4 | –20.0 |
| -2 | -19. |
| 0 | -18. |
| 2 | -17. |
| 4 | -16. |
| 6 | -14. |
| 8 | -13. |
| 10 | -12. |
| 12 | -11. |
| 14 | –10.0 |
| 16 | -9. |
| 18 | -8. |
| 20 | -7. |
| 22 | -6. |
| 24 | -4. |
| 26 | -3. |
| 28 | -2. |
| 30 | -1. |
| 32 | 0.0 |
| 34 | 1. |
| 36 | 2. |
| 38 | 3. |
| 40 | 4. |
| 42 | 6. |
| 44 | 7. |
| 46 | 8. |
| 48 | 9. |
| 50 | 10.0 |
| 52 | 11. |
| 54 | 122 |
| 56 | 13. |
| 58 | 14. |
| 60 | 16. |
| 62 | 17. |
| 64 | 18. |
| 66 | 19. |
| 68 | 20.0 |
| 70 | 21. |
| 72 | 22. |
| 74 | 23. |
| 76 | 24. |
| 78 | 26. |
| 80 | 27. |
| 82 | 28. |
| 84 | 29. |
| 86 | 30.0 |
| 88 | 31. |
| 90 | 32. |
| 92 | 33. |
| 94 | 34. |
| 96 | 36. |
| 98 | 37. |
| 100 | 38. |
| 102 | 39. |
| 104 | 40.0 |
| 106 | 41. |
| 108 | 42. |
| 110 | 43. |
| 112 | 44. |
| 114 | 46. |
| 116 | 47. |
| 118 | 48. |
| 120 | 49. |
Automation and Control Solutions Honeywell International Inc.
Honeywell Limited-Honeywell Limit&
1985 Douglas Drive North 35 Dynamic Drive Golden Valley,
MN 55422 Scarborough, Ontario MIV 4Z9
69-1709EFS G.H. 03-04
**** Printed in USA. on recycled paper containing at least 10% post-consumer
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