Description
Honeywell TF428WN Thermostat – Comprehensive Description
The Honeywell TF428WN is an advanced digital thermostat designed specifically for controlling fan coil units in HVAC systems. Compatible with both 2-pipe and 4-pipe fan coil systems, this thermostat offers precise control over heating and cooling operations, ensuring optimal comfort in residential, commercial, and institutional buildings.
Equipped with a 3-speed fan control and on/off valve control, the TF428WN allows users to manually select fan speeds or configure automatic fan operation based on temperature demands. Its dual capability supports manual or automatic changeover between heating and cooling modes, making it highly versatile for environments where temperature needs may vary throughout the year.
Applications
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Residential apartments and houses
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Commercial office buildings
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Hotels and hospitality venues
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Healthcare and hospital facilities
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Educational institutions
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Small to medium-sized commercial HVAC fan coil systems
Key Features
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Compatible with both 2-pipe and 4-pipe fan coil systems
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Controls heating and cooling with manual or automatic changeover
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3-speed fan control (manual or automatic) for tailored airflow
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Cycle Per Hour (CPH) control enhances temperature accuracy and system longevity
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Random start-up function reduces simultaneous compressor start, protecting power grid
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Memorized time off for energy savings during unoccupied periods
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Backlit LCD display with selectable °C/°F units
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Keypad lock feature prevents unintended user changes
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Supports remote temperature sensor input for improved sensing
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Freeze protection to safeguard equipment during cold conditions
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Compact design with easy wall mounting and IP20 protection
Technical Specifications
| Specification | Detail |
|---|---|
| Model | Honeywell TF428WN |
| System Type | Fan coil units (2-pipe and 4-pipe systems) |
| Control Type | On/Off with Cycle Per Hour (CPH) control |
| Fan Control | Manual or automatic 3-speed |
| Valve Control | On/Off (Open/Close) |
| Temperature Range | 10°C to 32°C |
| Power Supply | 220/230 VAC, 50/60 Hz |
| Display | Backlit LCD |
| Ambient Operating Temp. | 0°C to 49°C |
| Storage Temperature | -30°C to 60°C |
| Humidity Range | 5% to 90% RH (non-condensing) |
| Protection Rating | IP20 |
| Keypad Lock | Yes |
| Freeze Protection | Yes |
| Remote Sensor Input | Optional |
| Energy Saving Features | Memorized time off, random start-up |
| Mounting Type | Wall-mounted |
| Dimensions | Approx. 130 mm x 85 mm x 40 mm |
Frequently Asked Questions
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Is the Honeywell TF428WN thermostat suitable for both heating and cooling control?
Yes, it supports both heating and cooling with manual or automatic changeover functionality. -
What happens to the thermostat settings during a power outage?
The thermostat retains its settings and memory during power interruptions, ensuring stable operation once power is restored.
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