Tech Controllers EU-88 zPID - Maintenance

14
shuts off the fan.If the boiler temperature reaches 80
O
C, the C.H. pump will be
activated. If the temperature continues to rise, the alarm will be activated at 85
O
C.
Such condition may appear when the water heater or the pump is damaged or when
the sensor has been improperly installed. However, if the temperature drops, the
controller will activate the fan at 66
O
C and it will remain in the duty mode maintaining
the priority temperature of 62
O
C.
.17. Monitoring the flue gas outlet temperature
This sensor constantly monitors the flue gas outlet temperature. If the
sensor is damaged, disconnected from the controller or removed from the flue conduit,
Flue Gas Sensor Damaged massage will appear on the display. This will cause the
controller to switch to the emergency mode. In such case, only boiler temperature is
used. The controller is operated using only the boiler sensor and the zPID function
remains active without the flue gas outlet sensor.
.18. Fuse
The regulator has a network protection WT 3.15 A tube fuse. Higher current ratings
may cause damage to the controller.
IV. Maintenance
Before and during the heating season, the EU-88zPID controller should be checked for
condition of its cables. You should also check if the controller is properly mounted and
clean it if dusty or dirty. It is advisable to measure grounding parameters for the motors
(central heating pump, hot consumption water pump and fan).
EU-88zPID Technical Specifications
Power supply
230V ±10% /50Hz
Maximum power consumption
5W
Ambient working temperature
5÷50°C
Pump max. output load
0,5A
Fan max. output load
0,6A
Temperature measurement accuracy
1°C
Sensor thermal resistance
-30÷99°C
Flue gas sensor thermal resistance
-30÷480°C
Fuse
3,15A
23
O
c 98
O
c 50%
C.H. Flue Fan D