Honeywell Thermostat T775A- Manuals

Page 5 - INSTALLATION; Electrical Shock or Equipment Damage Hazard.; Location and Mounting; Sensor Location; CAUTION; Electrical Shock Hazard.

T775A,B,C,D REMOTE TEMPERATURE CONTROLLER 5 63-2489—2 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 ratings given in instructions and on the product to ensure the product is ...

Page 6 - WIRING; Do not use 24 Vac power at terminals 5 and 6 to

T775A,B,C,D REMOTE TEMPERATURE CONTROLLER 63-2489—2 6 Fig. 7. Sensor mounted on wall. Fig. 8. Parallel-series wiring of sensors. WIRING CAUTION Electrical Shock or Equipment Damage Hazard. Can shock individuals or short equipment circuitry. Disconnect power supply before installation. CAUTION Do not...

Page 7 - OPERATION; Control Algorithm; Heating Mode Operation; Cooling Mode Operation; EXAMPLE; Contact Closure Override Input

T775A,B,C,D REMOTE TEMPERATURE CONTROLLER 7 63-2489—2 OPERATION Control Algorithm On/Off Control The T775AC operate with one temperature input supplied by the remote sensor while T775B,D have two temperature inputs. The T775A,B,C,D are all capable of providing up to four stages of on/off control rel...

Page 8 - The T775 will not allow the user to program for both; Keypad Programming and Display; Programming Keys; Display

T775A,B,C,D REMOTE TEMPERATURE CONTROLLER 63-2489—2 8 2. For two sensor models (T775B), determine which loads will be controlled from sensor A or sensor B and enter on the worksheet. 3. Determine setpoint (Setpt) and switching differential (Diff) for each load and enter on the worksheet. 4. Refer to...

Page 9 - Device Programming; Default Values

T775A,B,C,D REMOTE TEMPERATURE CONTROLLER 9 63-2489—2 This selection is accomplished in the Select screen scrolling loop: 1. To lock on to either sensor, use the Select key to scroll through the loop to the temperature prompt of interest. 2. Stop at Sensor A or Sensor B sensed temperature point. 3. ...

Page 10 - CHECKOUT; Error Messages; Table 4. Temperature Offset Based on Wire Length.

T775A,B,C,D REMOTE TEMPERATURE CONTROLLER 63-2489—2 10 CHECKOUT Error Messages There are seven error messages that can display in response to T775 software or hardware problems. The error Codes that can flash on the display are: • SF: Sensor Failure — A flashing SF indicates an out-of-range or defec...

Page 11 - CHECKOUT EXAMPLE WITH SENSOR A = 68 AND SENSOR B = 73; CHECKOUT TABLE

T775A,B,C,D REMOTE TEMPERATURE CONTROLLER 11 63-2489—2 Fig. 10. Checkout Table and checkout example with Sensor A = 68°F and Sensor B = 73°F. SELECT ENTER SET M7426A HEAT OR COOL MODE DIFFERENTIAL DESIGNATED SENSOR SETPOINT SENSED TEMPERATURE LOAD 1 (HEAT) LOAD 2 (HEAT) LOAD 3 (HEAT) LOAD 4 (HEAT) C...

Page 16 - Automation and Control Solutions

Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 customer.honeywell.com ® U.S. Registered Trademark© 2005 Honeywell International Inc.63-2489—2 B.B. Rev. 07...

Honeywell Thermostat T775A- Manuals

Manuals:

User Manual Honeywell Thermostat T775A

Summary

Honeywell Manuals