Tech Controllers EL480zPID, User Manual

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User manual
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 Pause in sustain mode
This option is used to set the feeder pause time when the CH boiler operates in sustain mode
(operating above the setpoint temperature).
Attention: Incorrect setting of both operation and pause time may result in further temperature
increase! The user should make sure that the pause time in sustain mode is not too short.
 Fan in sustain mode
This option is used to set the fan operation and pause time in sustain mode.
 CH boiler hysteresis
This option is used to set the set temperature hysteresis. It is the difference between the
temperature of entering the sustain mode and the temperature of restoring the operation mode
(e.g. when the set temperature value is 60ºC and the hysteresis is 3ºC, entering the sustain
mode takes place at 60ºC, whereas returning to the operation mode takes place when the
temperature drops to 57ºC).
When PID function is deactivated, the following functions (typical of PID control mode)
disappear from the main menu and the fitter’s menu:
 Fire-up,
 Fan coefficient,
 CH boiler power coefficient,
III.r) Room controller unit
This function allows to programme the operation of the room controller as follows:
 Off – the state of the room controller has no impact on other settings
 Boiler – after the room controller has indicated that the preset temperature is reached
the preset boiler temperature will be reduced (detailed setting - see Item II.15)

Central Heating pump - after the room controller has indicated that the preset
temperature is reached the central heating pump will be shut off (detailed setting - see
Item II.15)

Room controller – the function allows to select the controller type connected to ST-480
controller to operate with the above selected unit. Two options are available:

two-state (standard controller)

TECH controller
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
If both controllers are selected the room control temperature reduction will be active only
after both controllers have sent a signal confirming that the preset room temperature has been
reached.
III.s) Display contrast
Allows changing the display contrast settings.
IV. Service menu
A 4-digit code has to be input to enter service functions of ST-480 controller. The code is in