Tech Controllers EL480zPID, User Manual, Page: 6 / 28

User manual
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by pressing the knob. Similar procedure is followed when changing the parameters. In order
for the changes to be input they need to be confirmed by pressing the pulser after the
" CONFIRM " message appears. If the user does not intend to make any changes in a function
the pulser should be pressed after the " CANCEL " message is displayed. Select " EXIT " in the
menu or use EXIT button to exit the menu.
Stand-by mode button located on the controller housing allows disabling all operating units
quickly, if necessary. It serves as an additional emergency protection to cut-off power supply
to all operating units of the controller (feeder, fan, pumps).
ATTENTION : Power supply to the controller is not cut-off in the stand-by mode.
II.b) Screen view
The user can select one of three main screens of the temperature controller operation using
that function. They include:

central heating screen (displays current boiler operation mode) valve (displays working
parameters of the valve)
 valve 1 (displays working parameters of the first valve).
 valve 2 (displays working parameters of the second valve).
NOTE The valve parameter views are available only if the valves have been properly preinstalled
and configured by a technician.
II.c) Preset temperature of the central heating system
The option is used to set the boiler temperature. The user can change the boiler temperature
within the range of 45
O C to 80 O C. The preset central heating system temperature can also be
changed directly in the main screen of the controller by turning the pulser knob.
Additionally, the preset central heating system temperature can be adjusted using the
room
temperature reduction function (see Item II.15) and the weekly control function. The preset
temperature is a sum of all those values but it may not exceed the range of 45 O C to 80 O C.