Instruction/ maintenance manual of the product T8501D Honeywell
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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.
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.
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.
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.
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.
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.
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.
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.
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.
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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.
An important point after buying a device Honeywell T8501D (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Honeywell T8501D yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Honeywell T8501D - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Honeywell T8501D you will learn all the available features of the product, as well as information on its operation. The information that you get Honeywell T8501D will certainly help you make a decision on the purchase.
If you already are a holder of Honeywell T8501D, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Honeywell T8501D.
However, one of the most important roles played by the user manual is to help in solving problems with Honeywell T8501D. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell T8501D along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
