Honeywell T8665A Manuals

2 pdf manual(s) Honeywell T8665A for free download (Document Types: Operation & user’s manual, Installation instructions manual)

Honeywell T8665A Operation & user’s manual [PDF] (48 pages)

  • Identifier: id-461244
  • Brand: Honeywell
  • Device: T8665A Thermostat
  • Type: PDF
  • Key Aspects: Initial Startup Checklist, Critical Operational Precautions, Standard Operating Procedures
  • UPD Date: 09.07.2026
  • Source File: 444813.pdf
  • Pages: 48
  • Description: Setup and usage guide for the Honeywell T8665A.
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  • 2 69-1536–3
  • 3 69-1536–3 CONTENTS USING THIS GUIDE .......................................................................................................................................... 5 FEATURES ........................................................................................................................................................ 6 KEYBOARD AND DISPLAY DESCRIPTION ..................................................................................
  • 4 69-1536–3 Contents (Cont) Using the (Information) Key ......................................................................................................................... 23 Display Current Setting ................................................................................................................................. 23 Display or Reset Filter Timer Settings ...........................................................................
  • 5 69-1536–3 USING THIS GUIDE The T8665A is a multi-functional thermostat. This means it can be used in single or multi-zone applications. The following symbols will help you identify the features that apply to your system: – Triple layer of thermostats with the word, zoning, below. These features are available when more than one thermostat is used with the W8665E RF ZoneTM Panel. – Tip symbol. Look for helpful tips throughout the guide when you see t
  • 6 69-1536–3 FEATURES • Adaptive Intelligent RecoveryTM Control for comfort and energy savings. • Customize the program schedule—program your own schedule to fit your needs. • Temporary schedule override—set the thermostat higher or lower for the current program schedule. • Permanent schedule override—set the thermostat higher or lower indefinitely. • Vacation mode (1 to 255 days) for added comfort and energy savings. Set the temperature h
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1 69-1536–3 USER’S GUIDE T8665A Chronotherm® IV Wireless Thermostat 69-1536-3

Honeywell T8665A Installation instructions manual [PDF] (12 pages)

  • Identifier: id-461846
  • Brand: Honeywell
  • Device: T8665A Thermostat
  • Type: PDF
  • Key Aspects: Component Longevity Optimization, Model Variations and Compatibility, Package Contents and Accessories List
  • UPD Date: 25.08.2026
  • Source File: 445447.pdf
  • Pages: 12
  • Description: Operation and maintenance manual for the Honeywell T8665A.
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  • T8665A CHRONOTHERM® IV DELUXE PROGRAMMABLE WIRELESS THERMOSTAT 69-1535-3 2 Fig. 1. Typical thermostat location. Fig. 2. Mounting the wallplate. Mounting Thermostat 1. Engage tabs at the top of the thermostat and wall- plate. See Fig. 3. 2. Press lower edge of case to close and latch. NOTE: To remove the thermostat from the wall, first pull out at the bottom of the thermostat; remove top last. Fig. 3. Mounting thermostat on wallplate. 5 FEET [1.5 METERS] Y
  • T8665A CHRONOTHERM® IV DELUXE PROGRAMMABLE WIRELESS THERMOSTAT 3 69-1535-3 Using Thermostat Keys The thermostat keys are used to: • set current day and time. • program times and setpoints for heating and cooling. • temporarily override program temperatures • display present setting, • configure Installer Setup, • check self-test, • set the system operation, • set the fan operation. See Fig. 4 for key locations. Fig. 4. T8665A key locations
  • T8665A CHRONOTHERM® IV DELUXE PROGRAMMABLE WIRELESS THERMOSTAT 69-1535-3 4 5. Attach the zone number stickers, included with the thermostat, onto the thermostat case on the inside of the thermostat cover. See Fig. 5. Fig. 5. Zone stickers included with T8665A Thermostat. SETTINGS System and Fan Settings The system default setting is Heat and the fan default setting is Auto. Use the System and Fan keys to change the settings. See Fig. 6. The fan settings c
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® U.S. Registered Trademark Copyright © 2002 Honeywell • • All Rights Reserved INSTALLATION INSTRUCTIONS 69-1535-3 T8665A Chronotherm® IV Deluxe Programmable Wireless Thermostat APPLICATION The T8665 Chronotherm® IV Wireless Thermostat provides electronic control of 24 Vac heating and cooling systems. It must be used with a W8665 Receiver Module. Refer to Table 1 for a general description of the thermostat. The T8665A Thermostats are battery- powered. MERCURY NOTICE If this control is replacing a control that contains mercury in a sealed tube, do not place your old control in the trash. Contact your local waste management authority for instructions regarding recycling and the proper disposal of the old thermostat. INSTALLATION Accessory Required (Not Included) Select one of the receiver modules for your application: — W8665A Receiver Module (RM) for single zone applications. — W8665E RF Zone™ Panel for up to three zones. When Installing this Product... 1. Read these instructions carefully. Failure to follow the instructions can damage the product or cause a hazardous condition. 2. Check the ratings given in the instructions and on the product to make sure the product is suitable for your application. 3. Installer must be a trained, experienced service technician. 4. After completing installation, use these instructions to check out the product operation. Location Install the thermostat about 5 ft (1.5m) above the floor in an area with good air circulation at average temperature. See Fig. 1. Do not install the thermostat where it can be affected by: — drafts, or dead spots behind doors and in corners. — hot or cold air from ducts. — radiant heat from sun or appliances. — concealed pipes and chimneys. — unheated (uncooled) areas such as an outside wall behind the thermostat. Wallplate Installation The thermostat can be mounted horizontally on the wall. 1. Position and level the wallplate (for appearance only). The thermostat functions correctly even when not level. 2. Use a pencil to mark the mounting holes. See Fig. 2. 3. Remove the wallplate from the wall and drill two 3/16 in. holes in the wall (if drywall) as marked. For firmer material such as plaster, drill two 7/32 in. holes. 4. Gently tap anchors (provided) into the drilled holes until flush with the wall. 5. Position the wallplate over the holes. 6. Loosely insert the mounting screws into the holes. 7. Tighten the mounting screws. Table 1. T8665A Thermostat Description. T8665 System Changeover System Selection Fan Selection Comments A Heat-Cool Automatic Heat-Off-Cool-Auto On-Auto System and fan selections are entered at keyboard.

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