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T6861-F Large LCD Digital Thermostat
230 VAC , Floating output
2-pipe fan coil control
Application
T6861-F digital thermostats are designed for
application of 3-speed fan and floating valves in fan
coil system.
Including:
2-pipe cool only/heat only/manual changeover
Ventilation mode
Manual or automatic 3-speed fan control
floating valve control
Fan speed can be selected to automatic or manual
3-speed control mode.
In ventilation mode, fan only support manual speed
control.
Model summary
Horizontal/
Model
Vertical
T6861H2WB-F
Horizontal
T6861V2WB-F
Vertical
T6861H2WG-F
Horizontal
T6861V2WG-F
Vertical
Note: Horizontal models are taken as samples for display, operation and installation pictures shown in below parts.
Time
Backlight
Color Ring
on/off
Blue
White
Y
Blue
White
Y
Green
White
Y
Green
White
Y
Features
• Super modern appearance design, suitable for
office, hotel and residential building
• Horizontal and vertical model available for variant
application
• Slim design, direct installation on 86 size box
• Stylish and elegant blue/green backlight with white
• 2-pipe integrated into one unit with easy configuration
• Big LCD display with English and icons
• Easy to install and set-up
• Time on/off function
• Selectable room temperature or setpoint temperature
display
• Manual or automatic fan speed selection
• Remote sensor function
• Adjustment of display room temperature
• Temperature unit either
• User setting can be kept when power off
• Freezing protection function available
• Lock or unlock keys or part of keys in Installer Set-up
• Heat and cool setpoint limitation for energy saving
2-pipe/
Power supply
Remote
4-pipe
(V)
sensor
2
230
Y
2
230
Y
2
230
Y
2
230
Y
Data sheet
o
o
C or
F
Manual/
Remote
Ventilation
Automatic Fan
Setback
Y
Y
Y
Y
Y
Y
Y
Y
N
N
N
N
1
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Table of Contents
Related Manuals for Honeywell T6861-F
Summary of Contents for Honeywell T6861-F
- Page 1 • Easy to install and set-up • Time on/off function Application • Selectable room temperature or setpoint temperature T6861-F digital thermostats are designed for display application of 3-speed fan and floating valves in fan • Manual or automatic fan speed selection coil system.
-
Page 2: Lcd Display
Mechanical design Fan Operation Thermostat appearnce DIGITAL DISPLAY FAN BUTTON UP BUTTON POWER BUTTON DOWN BUTTON MODE BUTTON PRESS THE FAN BUTTON TO SELECT LOW, MED, HIGH OR AUTO 50030722-001 REV.A Fan can be selected as manual or automatic 3-speed operation. -
Page 3: Operating Modes
Freezing protection mode Freezing protection can be selected as disabled (default) or enabled. In freezing protection mode (no such mode in cool only application), when thermostat is in OFF mode while the acquired temperature is below 6 C, the thermostat will start heat mode until the temperature rises to 8 C or the thermostat is turned on. -
Page 4: Terminal Designations
Terminal Designations Application 3: 2 pipes 1 stage Heat or 1 stage Cool MCO wiring diagram Terminal Description Line voltage Power Ch/Cc Valve close valve Valve open Line voltage ground Low speed fan relay Medium speed fan relay High speed fan relay remote sensor Ground for remote sensor Remote sensor... -
Page 5: Installer System Test
Installer system test 2 Push the Power box into the junction box. After completing the installer setup above, press the button again to begin a system test Follow the procedure below to test the heating and cooling and fan system. System test No. -
Page 6: Troubleshooting Tips
Troubleshooting Tips Setup Function Settings & Options If… Then… ISU Code Description Possible Options ♦ Press Up and Down button and hold them about 3s. 0 Heat only ♦ Press Mode button to adjust the item to "10", and Valve doesn't Press the Up button to modify the value to "2".