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III. Installation menu
The functions of the installation menu should be set by the person
installing the boiler or service personnel of the manufacturer.
III.1. Fan coefficient
This function is used to control the fan power. The control is based on shifting
the fan performance curve up or down. If the blowing rate in the whole control
range is too low/high, the coefficient should be increased/decreased accordingly
to ensure proper efficiency of the fan operation.
Malfunctioning of the blowing system is most frequently caused by relatively
large differences between voltages supplied to individual units, which has a
significant impact on the fan operation.
III.2. Feeding coefficient
Fuel feeding coefficient is intended to optimize the feeder operation so as to
ensure that fuel is fed to the furnace in proper quantities. This function allows
setting the percentage increase or decrease of fuel being supplied.
Once the proper fuel size is selected in the main menu it is possible, by using
the coefficient, to adapt precisely the fuel quantity to be fed by the feeder to
the furnace.
III.3 TECH controller
A room controller can be connected to ST-450zPID controller. This
function allows configuring the controller by selecting "ON" option. Additionally,
the user may check the programme version of the room controller.
After connection of TECH controller the user may check and change the
preset temperature of the central heating system, hot domestic water and the
mixing valve. Additionally all boiler controller alarms are displayed. When the
operation involves the mixing valve the user may preview the current external
temperature while viewing the main screen with the valve parameters.
After TECH Controller option is enabled a letter "P" appears in the upper
part of the display in the main screen of the controller. A flashing letter "P"
indicates that the temperature in the room is too low. As soon as the required
room temperature is reached the letter "P" stops flashing and stays on.
ATTENTION: No external voltage can be connected to the room controller
output.
III.4. Valve
ST-450zPID controller incorporates a mixing valve control module. The below
options are used to set the operation of the mixing valve:
1. Valve state
The function allows disabling the valve temporarily without the need to
ST – 450 z PID
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