EbV Product documentation THETA NORM/UNIT
6-6
6.2.2.6 Temperature display in Fahrenheit
Apart from the °C (Celsius) temperature scale, the °F (Fahrenheit) scale is common
in the UK and North America. The conversion formula is:
T [°F ] = +32
Every device in the control system can be switched separately to temperature display
in °F. The control system as such continues to operate in °C. The conversion to °F
only acts on the displayed temperatures.
The temperature display is in full degrees only (no decimals).
6.2.2.7 Controller type code
Function: The controller series THETA offers the option of reducing the scope of service of the
supplied device. The scope of service set in the factory is based on the controller type
(see overview on page 1).
The setting options in the following table are accessible via a parameter. After the
functionality is reduced, the controller functions according to the set controller type
designation.
After the type code is changed, the standard unit is reset automatically.
Subsequently, the device functions according to the changed type code.
Example: Controller THETA NORM 233BVVC
The controller has inputs and outputs for a single stage or fuel value heat generator
(..2.. and ..C..), via two mixed circuits (..33..), DHW circuit (..B..) and inputs and
outputs for variable functions (..VV..).
The following type codes can be set according to this "hardware":
1, 2, 3, 6, 7, 8, 11, 12, 13, 16, 17, 18, 21, 22
Operation:
Note on operation Key / parametertree Parameter
Activate Fahrenheit display SYSTEM PARAMETER 24
Operation:
Note on operation Key / parametertree Parameter
Type code SYSTEM PARAMETER 16
T [°C ] * 9
5
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