CM907-
TRV
CHRONOTHERM
EN0H 8555 UK07 R0 09/06
4
Special Features
Description
What to do if we wish this
feature
Optimisation (Variable
Start Time)
Adaptive Intelligence
recovery TM
The thermostat 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
o
C. The thermostat will monitor the
accuracy of the start up and use this information to
modify the calculation for the following day by changing
the ramp rate (initial 3 K/hr) .The system will restrict the
start time to a max of 2 hours.
Note:
Optimisation will not work in cooling mode.
Set parameter n.8, category 1 in the
installer set-up mode to 1.
AM-PM/ 24hr Display
Change display format (default 24hr).
Set parameter n.1, category 1 in the
installer set -up mode to 12.
Pump exercise
When enabled the Pump Exercise will switch the relay
on for 1 minute at 12:00 if the relay has not been
switched on since 12:00 the previous day.
While in Holiday mode the Pump Exercise feature, if
enabled, will operate.
Set parameter n.5, category 2 in the
installer set -up mode to 1.
Upper Temperature Limit
The normal upper temperature limit of 35
o
C can be
reduced down to 21
o
C to save the homeowner energy.
Useful if the homeowner rents to tenants.
Set parameter n.6, category 1 in the
installer set -up mode to the desired
limit.
Lower Temperature Limit The normal lower temperature limit of 5
o
C can be
increased up to 21
o
C to protect the inhabitants from
cold. Useful if the inhabitants include the elderly,
children or disabled.
Set parameter n.7, category 1 in the
installer set -up mode to the desired
limit.
Temperature Offset
If the thermostat is located in a hot/cold location and
cannot be moved because of wiring then the measured/
displayed temperature can be adjusted by +/- 3
o
C.
Useful if the homeowner wants the reading to match
another appliance temperature display.
Set parameter n.12, category 1 in the
installer set -up mode to the desired
offset value.
Proportional Band Width
Can be adjusted up to 3
o
C (default is 1.5
o
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.
Set parameter n.13, category 1 in the
installer set -up mode to the desired
value.
Optional
Accessories
Description
What to do if we wish this
feature
Outside Temperature
Sensor
(F42010971 001)
An Outside Temperature Sensor can be fitted, allowing
the homeowner to display the outside temperate on the
thermostat display by pressing the INFO
i
button.
The
thermostat will read the outside temperature every 10
minutes. Outside temperature display range is from -30
o
C to +45
o
C. The sensor can be connected up to 50
meters from the unit.
1. Fit the sensor (instructions
included in the sensor package).
2. Set parameter n. 10, category 1 in
the installer set-up mode to 1.
Remote Temperature
Sensor
(F42010972 001)
A Remote Temperature Sensor can be fitted, allowing
the thermostat to control the temperature from another
room or space, where it is inconvenient to locate the
thermostat. It will read the remote sensor every 1
minute. The sensor can be connected up to 50 meters
from the unit. Useful for commercial premises where the
public may tamper with the product.
1. Fit the sensor (instructions
included in the sensor package).
2. Set parameter n. 10, category 1 in
the installer set-up mode to 2.
