Pump Management - Carel pRack pR300T Mode D'emploi

Thr. OFF
ON/OFF operation

2.5 Pump management

For each heat recovery module, the function can also manage a water circulation pump. This can be
controlled via digital output or 0-10V modulating analogue signal. Following deactivation of heat recovery,
the pump is also stopped, after the set delay.
Pump activation can be based on two mutually exclusive conditions: the heat recovery demand or the
difference between heat exchanger water outlet and inlet temperature. In both cases, it is possible to
decide whether the action will be directly proportional to the control variable or inversely proportional to
the control variable.
Thr. ON
MAX
Fig. 2.b
In versions prior to 4.0 (<= 3.3.12), only this operating mode
was available. For compatibility reasons, on/off operation
has been maintained; in the settings, set the parameter
that indicates the heat recovery request at maximum valve
opening to 0%:
Screen Eeab09 can be used to specify:
•
whether to enable circulating pump management
•
the type of pump, ON/OFF or modulating
•
the activation delay in seconds
100%
"Ric.RCmax apert"
11
ENG
HR Req.
cod. +030220595 - 1.2 - 13.08.2020