Minimum Temperature Limit; Maximum Temperature Limit; Blocking Protection Of The Mixer; Manual Emergency Operation - BARBERI P27.T Manual Para El Usuario

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Adjust the DIP-switches before mounting the controller on the mixer!
After the adjustment of the DIP-switches mount the housing cover correctly.

9.4. Minimum temperature limit

At the minimum temperature limit the temperature setpoint value is limited to a value, that will not be undercut
– independent of the adjusted temperature setpoint value. The minimum temperature limit is activated when
DIP-switch 2 is adjusted to ON. The minimum temperature can be adjusted with DIP-switch 3. If DIP-switch 3
is OFF, the minimum temperature is + 60 °C, if it is adjusted to ON the minimum temperature is + 70 °C. The
maximum temperature limit is deactivated (example of use: boiler return flow temperature increase)!

9.5. Maximum temperature limit

The temperature of the heating system is controlled to the internal limit in the following case: the maximum
temperature limit (DIP-switch No. 3 = ON, No. 2 = OFF) is switched on and the adjusted setpoint value is
higher than the preset internal temperature limit (+ 55 °C). The minimum temperature limit is deactivated!
The system is controlled according to the setpoint value adjustment, if the adjusted setpoint value is less than
the value of the temperature limit.

9.6. Blocking protection of the mixer

The blocking protection runs, when the mixer is staying in one of both end positions for at least 24 hours.
During the blocking protection the mixer is moved to the opposite end position and back. The two LED´s are
flashing mutual.
Attention!
!
The temperature in the heating system can exceed the value of the temperature limit (+ 55 °C), when
the mixer blocking protection is activated.

9.7. Manual emergency operation

In case of an electrical power outage or in case of a controller failure, the mixer can be manually adjusted in
the desired position. The controller automatically starts the normal operation, when the electrical power returns
and if the automatic position is activated (see chapter 8. Procedure of commissioning)
Activation manual position:
Activation automatic position:
Operating and commissioning manual - EN
With a screw driver switch from position ‚automatic' (
‚manual' ( ) at the front side of the controller. With the adjustment
knob the mixer now can easily be adjusted in the desired position.
The LED´s flash after maximum 5 minutes. Additionally the temperatu-
re control is switched off and the actuator is stopped.
Turn the adjustment knob to end position LEFT or RIGHT before
switching from position ‚manual' (
Directly after that, switch from position ‚manual' to position ‚automatic'
with a screw driver. The controller automatically starts to adjust the
mixer according to the adjusted setpoint value temperature.
) to position
)to position ‚automatic' ( ).