8
9
10
11
You have now installed the Chronotherm. For gas boiler applications, the factory system
settings will not need to be changed (for other applications see below). You can now use
the USER GUIDE to program the unit and demonstrate how it works to the homeowner.
Special Features
Optimisation (Variable
Start Time)
AM-PM/ 24hr Display
Pump Exercise
Upper Temperature Limit
Lower Temperature Limit
Temperature Offset
Proportional Band Width
What do I need to do if I wish
this feature?
Set parameter n.1 in the installer
set-up mode to 1
Set parameter n.3 in the installer
set-up mode to 1
Set parameter n.8 in the installer
set-up mode to 1
Set parameter n.11 in the installer
set-up mode to the desired limit
Set parameter n.12 in the installer
set-up mode to the desired limit
Set parameter n.13 in the installer
set-up mode to the desired offset
value.
Set parameter n.15 in the installer
set-up mode to the desired value
Description
The Chronotherm will adjust the start time in the morning/afternoon so the
desired temperature is reached by the start of the program period e.g. Time
7:00, Temp 21°C. The system will restrict the start time to a max of 3 hours
The end user can have a different clock format display
The circulating pump on hydronic systems can be exercised once a day for 1
minute at mid-day. Useful to prevent the pump from sticking after the summer
The normal upper temperature limit of 30°C can be reduced down to 21°C to
save the homeowner energy.
The normal lower temperature limit of 5°C can be increased up to 16°C to
protect the inhabitants from cold. Useful if the inhabitants include the elderly,
children or disabled
If the Chronotherm is located in a particularly hot/cold location and cannot
be moved because of wiring then the measured/displayed temperature can
be adjusted by +/- 3°C. Useful if the homeowner wants the reading to match
another appliance temperature display
Can be adjusted up to 3°C (default is 1.5°C) to provide better temperature
control (less overshoot). Useful for:
a. Well insulated homes with over-sized heating systems
b. Air systems with fast response
Optional
Accessories
Outside Temperature
Sensor
Remote Temperature
Sensor
Automatic Time Setting
(ATS) Module
What do I need to do if I wish
this feature?
1. Fit the sensor (instructions
included in the sensor package)
2. Set parameter n. 10 in the
installer set-up mode to 1
1. Fit the sensor (instructions
included in the sensor package)
2. Set parameter n. 10 in the
installer set-up mode to 2
1. Fit the ATS module
2. Set parameter n. 4 in the
installer set-up mode to 1
Description
An Outside Temperature Sensor can be fitted to your CM67 to allow the
homeowner to display the outside temperature on the Chronotherm display
by using the INFO button.
A Remote Temperature Sensor can be fitted to your CM67 to allow the
Chronotherm to control the temperature from another room e.g. in a
commercial premises where the public may adjust keys.
The ATS module picks up a time signal daily from a European transmitter, so
you never need to set or adjust the time.
Move the slider to
the OFF position.
Press and hold
INFO button and
press PROG 3,4
together.
Press TEMP
or
to change factory setting.
The display will flash indicating that a change has
been made.
Press INFO button to confirm the change is ok.
The display will stop flashing indicating that the new
value has been stored.
Adjust other settings using the Installer Set-
Up Mode - Settings Table on the next page.
To exit the Installer Set-Up Mode move the
slider to the AUTOmatic or MANual position.
1
2
3
4
5
6
7
7
1
Installer Set-Up Number
(Press
+ or - to change)
e.g.
1 = Optimisation
Abbreviated Set-Up Description
e.g.
0P = Optimisation
Factory Setting or New Choice
(Press Temp
or
to change)
e.g.
0 = Optimisation disabled
e.g.
1 = Optimisation enabled
Installer Set-Up Mode
Selected
Category 1 Installer Set-Ups
1
Once you have inserted the battery cartridge,
after a pause the unit will display information.
If this does not happen or the display shows
the
symbol please refer to the ‘trouble
shooting’ section in the CM67 user guide.
What else will the Chronotherm do?
Cover Specific Applications
Perform Special Features
Support Optional Accessories
Installer Set-Up Mode
1
Press
+ or -
to go to the next parameter and follow
steps 3 & 4 to make changes.
1
Specific Application
Heating
Air-
conditioning
What do I need to change?
Note:
a. To change Cycle/Hour, please go to parameter n. 9 in the installer
set-up mode.
b. To change Minimum ON Time, please go to parameter n. 2 in the
installer set-up mode
No action required
1. Set Minimum ON Time to 4 minutes.
2. Set Cycle/Hour to 3.
Set Cycle/Hour to 12.
No action required
1. Configure the Chronotherm for electric heating (set parameter n.7
in the installer set up mode to 1)
2. Set Cycle/Hour to 12
1. For cooling application only, set the Chronotherm to cooling (set
parameter n.6 in the installer set-up mode to 0)
2. For heat/cool application, set the Chronotherm accordingly to
required mode of operation by changing parameter n.6 in the
installer set-up mode.
winter = heating summer = cooling
Explain to the end-user how to implement the change-over and ensure that the
appropriate time and temperature profile is established for heating and cooling
1. Set Minimum ON Time to 4 minutes.
2. Set Cycle/Hour to 3.
No action required
Setting
Cycle/
Minimum
Hour
ON Time
6
1
3
4
12
1
6
1
12
1
3
4
6
1
Gas Boilers
(<30KW)
Oil Boiler
Thermal Actuator
Zone Valve
Electric Heating
(for applications
<8A)
Heat Pump/Air
conditioner
Fan Coil