Honeywell T8501D manual

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Table of contents for the manual

  • Page 1

    X-XX UL INST ALLA TION INSTRUCTIONS ®U.S. Registered Trademark Copyright © 1997 Honeywell Inc. • • All Rights Reserved T8501D Deluxe Zone Thermostat APPLICA TION The T8501 Deluxe Zone Thermostat provides electronic control of 24 Vac single-stage zoned heating and cooling systems. Refer to Table 1 for a general description of the thermostat. T[...]

  • Page 2

    69-1049—1 2 T8501D DELUXE ZONE THERMOSTAT Fig. 1. Typical location of thermostat. Fig. 2. Mounting the wallplate. W iring All wiring must comply with local electrical codes and ordinances. Refer to Fig. 3 and 4 for typical hookups. A letter code is located near each terminal for identification. CA UTION Disconnect power before wiring to prevent e[...]

  • Page 3

    69-1049—1 3 T8501D DELUXE ZONE THERMOSTAT Fig. 3. Typical wiring diagram for T8501D with zone 1 MABS II control panel. Fig. 4. Typical wiring diagram for T8501D with zone 1 TotalZone® control panel. Fig. 5. Proper wiring technique. Mounting Thermostat 1. Engage tabs at the top of the thermostat and wallplate. See Fig. 6. 2. Press lower edge of c[...]

  • Page 4

    69-1049—1 4 T8501D DELUXE ZONE THERMOSTAT SETTINGS System and Fan Settings System settings control the thermostat operation as follows: Heat: The thermostat controls the heating. Off: Both the heating and cooling are off. Cool: The thermostat controls the cooling. Auto: The thermostat automatically changes between heating and cooling operation, d[...]

  • Page 5

    69-1049—1 5 T8501D DELUXE ZONE THERMOSTAT Table 2. Thermostat Installer Setup Options. a Number 02 must be set to 01 to extend fan operation. b Available on select models. Installer Setup Number (Press i key Factory Setting Other Choices (Press ▲ or ▼ key to change) Actual Select to change) Display Description Display Description Setting Not [...]

  • Page 6

    69-1049—1 6 T8501D DELUXE ZONE THERMOSTAT IMPORTANT Review the settings to confirm that they match the system. To exit the Installer Setup, press and hold the Information i key until the display returns to normal (approximately three seconds). INST ALLER SYSTEM-TEST Use the Installer System-Test to check the thermostat operation. Refer to Table 3[...]

  • Page 7

    69-1049—1 7 T8501D DELUXE ZONE THERMOSTAT Table 4. Installer Self-Test Options (Continued) . NOTE: Press and hold the increase ▲ and decrease ▼ keys together for three seconds to exit the system-test. The system-test will time out after ten minutes without any key presses. 2. Press the increase ▲ key to display the production date code. The[...]

  • Page 8

    69-1049—1 8 T8501D DELUXE ZONE THERMOSTAT 5. Press the increase ▲ key again to display the EEPROM identification code. 6. Press and hold the increase ▲ and decrease ▼ keys together, until the room temperature is displayed, to exit the system-test. The system-test times out after ten minutes without any key presses. CHECKOUT Outdoor T empera[...]

  • Page 9

    69-1049—1 9 T8501D DELUXE ZONE THERMOSTAT Troubleshooting Guide (Continued). a Available on select models. Symptom Possible Cause Action Heating will not come on. No power to the thermostat. • Check that C terminal is connected to the system transformer. •C heck for 24 Vac between C and R and between R and W terminals. — If missing 24 Vac: [...]

  • Page 10

    69-1049—1 10 T8501D DELUXE ZONE THERMOSTAT[...]

  • Page 11

    69-1049—1 11 T8501D DELUXE ZONE THERMOSTAT[...]

  • Page 12

    69-1049—1 12 T8501D DELUXE ZONE THERMOSTAT Helping You Control Your World ® 69-1049—1 J.H. Rev . 6-97 Pr inted in T aiwan R.O .C. www .honeywell.com/y ourhome Honeywell Trol-A-Temp 57 Bushes Lane Elmwood Park, NJ 07407-3204 (201) 794-8004 (800) 828-8367 Fax: (201) 794-1359[...]