Honeywell Communicating Fan Coil Thermostat Instruction Manual
Backlight
Function
To turn on the backlight, press any key. The backlight will
timeout 8 seconds after the last key is pressed. When in ISU
or Installation test mode, the backlight will timeout 60 seconds
after the last key is pressed.
Valve Control
Thermostat measures the room temperature via integrated
sensor and maintains the setpoint by delivering on/off valve
control command output.
The fan setting can be selected as manual or automatic 3-
speed operation. When in “manual” mode, the fan is switched
to the selected speed via control output FH (high), FM
(Medium) , FL (Low).
When in “auto“ mode, fan speed depends on the difference
between room temperature and setpoint. When room tempera-
ture reaches the setpoint, the valve will be closed, and the fan
will be closed in the meanwhile.
Keypad Lockout
Keypad lockout can be set in ISU or over Modbus. The default
status is “all keys available”. Keypad lock function can be se-
lected as “mode button locked out”, “Fan and mode buttons
locked out”, “all buttons (except power button) locked out” and
“all buttons locked out”.
Temperature Display
The displayed temperature can be set to room temperature or
setpoint. The setting can be changed during ISU (Installation
Set Up) process.
Cycle Per Hour (CPH)
Fan Speed is high or off
2℃
CPH function enables the thermostat to open the valve several
times per hour as the room temperature approaches to the
sepoint.
Fan Speed is medium or off
1℃
Fan Speed is low or off
Setpoint
Fan Speed is low or off
The value can be changed in the ISU, the default values are 4
for heating and 3 for cooling.
-1℃
Fan Speed is medium or off
-2℃
Operating Mode
Fan Speed is high or off
Comfort Mode
In comfort mode, the setpoint and fan speed can be changed
by pressing corresponding buttons. Comfort mode including 2-
pipe cooling only/heating only/manual changeover and 4-pipe
manual /auto changeover applications.
Fig. 1. Fan Speed Ramping Control Algorithm
Memorized Time Off
The time off feature will automatically turn off the thermostat
after a selectable amount of time. To change the time setting,
press and hold the power button for more than 3 seconds and
press “up” and “down” button to change the value when the
thermostat is working .
NOTE: The setting range is from 0 to 12 hours. The step is 1
hour and the default value is 0.
E&ES-CDS-CT01-165-E01-EN
3
| General | Details |
|---|---|
| Name | Honeywell Communicating Fan Coil Thermostat Instruction Manual |
| Make | Honeywell |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.39 MB |
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