10
option is useful in the heating systems where the solid fuel fired boiler is included in
order to decrease the costs of heating. After the fuel demand alarm has been
cancelled with the STOP button, the additional boiler is turned off again and the work
of the regulator is resumed.
mode [Ar 1]
indicates that the additional output will be working as an alarm output to
which a signalling device can be connected. Boiler sensor failure, error of
overheating or fuel demand will cause the indicator to turn on.
mode [Ar 2] –
the additional output controls the mixing valve. To control the mixing
valve, the household thermostat should be applied to the system. Closing contacts
of the thermostat will make the valve open, and opened contacts will cause the valve
to close. Additionally, the valve is opened to prevent the boiler when the error of
overheating or sensor failure occurs.
mode [Ar 3] –
the additional output controls the boiler emergency chilling system
(e.g. a pump). In the mode, the additional output is turned on when the alarm of
boiler overheating or boiler sensor failure occurs.
mode [Ar 4]
– the additional output controls the devices working simultaneously with
the blower.
CAUTION!
The additional devices should be connected to the UM-1 unit.
Schematics of connections are shown in picture 3.
5.8. Testing the outputs.
To make checking the work of regulator easier it is possible to test the output
systems controlling the blower, pump and the additional boiler turn-on system. The
option is available in the service mode only when the regulating has been stopped,
i.e. the regulator had been in the STOP mode before it entered the service mode.
Selecting [outP] on the display allows with the OK button to turn on the central
heating pump temporarily, selecting [outΠ] will start the blower and choosing [outr]
will cause the additional multifunctional output to be turned on. To test the domestic
hot water pump output select [outu].
5.9. Producer’s settings.
The regulator enables the user to restore the standard settings introduced by the
producer. Select [Prod] on the display and press the OK button to confirm it. When
the option has been activated, the regulator enters the values of particular
parameters given in table 2.
5.10. Exiting the service mode.
To exit the parameters setting mode select [End] on the display and press the OK
button. Also, if no buttons will be pressed for 1 minute, exiting the mode occurs.
