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Training manual ALTEAS & GENUS ONE
5.3
PUMP UNIT
The pump is full modulating. The modulation is according to the boiler power in heating.
In sanitary the pump goes always at the maximum speed.
We can have 2 alternative pumps on this boiler:
Pump model: ES 2PK/53-9A-C STEP2.
Electrical power supply: 325Vdc.
Electrical consumption:52W (max speed).
Setting the parameter 246 like the parameter 245 the pump works always at fixed speed.
Setting the parameter 245 and 246 to 75 the pump works at the speed that is like the low speed in the pump
modulating in 2 step, at this speed is guaranteed the by-pass working.
UPDATE
PWM control
Pump model: EUMEZECP2AE-C
Electrical power supply: 325Vdc.
Electrical consumption:50W (max speed).
PAR.
Max pump speed (settable between 75
245
and 100)
Min pump speed ( settable between 40
246
and par. 245
NOTE
Power
supply
Page. 35 of 88
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