Regulator Functionality - Tech Controllers EU-88 zPID User Manual

to the duty mode and the manual operation symbol on the housing will be deactivated.
If the controller fails to reach parameters required for entering into the duty
within 30 minutes from activation of the fire-up function, the "Unable to fire up"
message will appear on the display. In such a case, the fire-up cycle needs to be
restarted.
Duty – once the fire-up cycle is finished, the controller enters the duty cycle. The duty
cycle is the basic functionality of the regulator. The blow is controlled automatically
using the zPID algorithm and the temperature is close to its setpoint value. In the user
menu, fan item will appear in place of the fire-up function. The fan can be deactivated
when needed (e.g. while feeding fuel). If the temperature rises unexpectedly by more
than 5 o C over the setpoint value, the so-called Supervision Mode is activated.
Supervision Mode – the mode is activated during the Duty Cycle if the temperature
rises by more than 5
from the PID control to manual settings (according to parameters entered in the Fitter's
Menu) to reduce the temperature of the circulation water.
Damping – if boiler temperature drops by 2
rise above this value for 30 minutes (default damping time), the regulator will switch
to thedamping mode. While in this mode, the fan is deactivated and the display shows
"Damping".
In case of voltage loss, the regulator ceases to operate. When power is restored, the
controller returns to operation with previously set parameters using its built-in memory.
Lack of voltage does not cause the stored parameters to be lost.
II. Regulator Functionality
This chapter describes regulator functionality, how to change settings and navigate in
the menu with the encoder (knob). Depending on the mode the boiler is currently in,
the display will show boiler operational parameters. The given mode is selected by the
user.
.1. Main Page
During normal operation, the LCD display shows the Main Page containing the following:
●
Boiler temperature (to the left of the display).
●
Setpoint temperature (to the right of the display).
●
Fan stop. After manually stopping the fan while in the duty mode, the star symbol
(*) will appear in the top right corner.
●
Operation Mode. In the bottom right corner, the corresponding letter of the
operation mode is displayed. Depending on the operation mode, the corresponding
o C over the setpoint value. In such case, the controller is switched
O
42 c
C.H.
o C below the fire-up threshold and fails to
O
| 55 c
Setpoint D
mode
7