14
PN 240012960 REV. F [09/15/2020]
Temperature Regulation
The set point temperature T1 of the DHW fluid at the heat exchanger outlet is factory set to the default value of 122 °F
(50°C). The REC is equipped with trimmer P1, accessible by removing the rubber plug located on the front cover, with
which the temperature T1 can be adjusted to a value different from the factory setting.
The set value T1 is displayed.
Electronic Control Regulator REC
The REC controls all the functions to manage the DHW module and produce domestic hot water.
Functions and Features
Activate pump anti-blocking
daily
Activate two way valve anti-blocking daily
Temperature set range
108 -140°F (42 - 60°C)
Control band: T1 Temperature
± 5.4°F (± 3°C )
Regulator automatic operations
At power up the REC checks the electrical wiring integrity and continues:
• With blocking the DHW MODULE, in the event of a temperature sensor fault.
• With resetting the two way valve.
Resetting the two way valve
With this function, the REC makes the stepper motor perform full-stroke in backward position.
Two Way Valve Anti-Block
With this function, the REC performs a complete valve operation cycle at 24 hour intervals.
The REC first makes the stepper motor perform a full-stroke forward and then a full-stroke backward.
Pump anti-block
With this function the REC powers the pump for 5 seconds at 24 hour intervals.