For projects demanding a modern thermostat with an intuitive interface and high precision in room temperature control, the Honeywell T6865 (Halo) Series is a top-tier consideration. The T6865H2WB model is specifically designed to control 3-speed fans and valves within 2-pipe or 4-pipe Fan Coil Unit (FCU) systems.
1. Introduction to the T6865 (Halo) Series
The T6865H2WB belongs to the Honeywell T6865 Series (commercially known as Halo). It is a modern digital thermostat that employs a P+I (Proportional + Integral) control algorithm to ensure stable temperature maintenance and significant energy savings. The device features a large LCD screen with a blue backlight, simultaneously displaying both the room temperature and the setpoint for easy monitoring and adjustment.
2. Detailed Specifications
|
Specification |
Details |
|
Brand |
HONEYWELL (USA) |
|
Power Supply |
100 to 240 VAC, 50/60 Hz |
|
Setpoint Range |
10°C to 32°C |
|
Accuracy |
±1°C at 21°C |
|
Load Rating |
4(2)A for Fan, 2(1)A for Valve |
|
Operating Life |
100,000 cycles (relay contacts) |
|
Ambient Conditions |
5°C to 45°C (operating) |
|
Mounting Type |
Standard 86x86mm flush-mount box |
3. Installation and Operation Guide
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Select a wall mounting location free from direct sunlight, heat sources, or direct cold drafts.
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Install a standard 86x86mm flush box and secure the thermostat body using the provided screws.
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Connect the 100-240 VAC power source and wire the fan (4(2)A) and valve (2(1)A) controls according to the wiring diagram in the catalog.
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Determine whether the FCU system is 2-pipe or 4-pipe to configure the appropriate automatic or manual Heat/Cool modes.
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Set the desired temperature between 10-32°C and activate the Energy Saving mode if required.
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Enable the keypad lock and setpoint limit features if necessary (e.g., in hotels to prevent guests from setting extreme temperatures).
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Test operations to ensure the LCD correctly displays temperatures and that the P+I algorithm stabilizes the room climate.
⚠️ Important Note: The thermostat has a parameter retention function during power outages, eliminating the need to reconfigure settings after sudden power losses.
4. Common Applications
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Controlling 3-speed fans and valves in 2-pipe or 4-pipe FCU systems.
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Premium hotels and apartments requiring modern, intuitive control interfaces.
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Keypad lock and setpoint limits make it ideal for public areas or guest rooms.
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Energy-saving modes assist in lowering operational costs for large-scale projects.
5. Why Buy the T6865H2WB from DLK?
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✅ 100% Genuine Honeywell product, directly imported with CO/CQ.
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✅ Technical advice to correctly configure the 2-pipe/4-pipe settings for your FCU system.
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✅ Complete PDF technical catalogs provided for project submissions.
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✅ Transparent warranty policy and quick technical support.
📞 Contact DLK for Consultation & Quotations
Looking for genuine Honeywell T6865H2WB thermostats with fast delivery? Contact DLK today for the best prices.
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