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Installer Setup; Specific Applications - Honeywell CM921 Product Specification Sheet

Wireless programmable thermostat
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INSTALLER SET-UP
To enter the installer set-up mode:
a) Move the slider switch to the OFF position.
b) Press and hold the INFO
buttons '< >' together.
c) The unit will display the first parameter of installer
parameter group category 1 (from n.1 to n.19).
d) Press the TEMP
or
setting. The display will flash indicating that a change has
been made.
e) Press the green OK button to confirm this change and the
display will stop flashing.
f) Press the
+ button to go to the next parameter.
g) Press the program button
Installer mode (from n.1 to n.14).
h) To exit the installer mode, move the slider switch to the
AUTO or MAN positions.
In Installer set-up we can:
❑ Set-up specific applications parameters
❑ Enable special features
❑ Configure system timing master for the zoning system

Specific Applications

Heating
Gas Boilers
(<30KW)
Oil Boiler
Thermal Actuator
Zone valve
Air
conditioning
Heat Pump/
Air conditioner
Fan coil
i
button and the two program
buttons
to change the factory
>
to go to category 2 in the
Setting
Minimum
Cycle/
Hour
ON time
(in minutes)
6
1
3
4
12
1
6
1
3
4
6
1
Abbreviated Set-Up Description
e.g. Cl = Clock Format
Installer Set-up Number
(Press
+ or - to change)
e.g. 1 = Clock Format
What do you need to change?
Note : All parameters listed below belong to category 2 – System
Parameters (see Installer Parameters Table)
No changes required
1. Set Minimum ON Time to 4 minutes.
2. Set Cycle/Hour to 3.
Set Cycle/Hour to 12.
No changes required.
1. Configure the thermostat to allow switching between heating
and cooling modes (set parameter n.4:HC to 1)
2. Set the thermostat accordingly to the required mode of
operation (heating or cooling) by pressing the TEMP
buttons together for 5 seconds.
as required.
1. Set Minimum ON Time to 4 minutes.
2. Set Cycle/Hour to 3.
No changes required.
CM921 CHRONOTHERM
Factory Setting or New Choice
Press TEMP
or
to change
e.g. 12 = AM/PM Format
24 = 24hr Format
Brief Description of the
Parameter Function.
or
Modify the cooling program
EN0H 8557 UK07 R0 09/06
3

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