Caleffi 255HE Series circulation group with flow and return connection - 1" F connections - 5–40 l/m

 

Circulation group for Caleffi 255HE Series solar systems. Safety devices are inserted in this relay group in order to guarantee regular monitoring of the circuit. This version has a flow and return connection and is equipped with a Grundfos Solar high-efficiency circulation pump with PWM control.

 

The Caleffi 255HE Series circulation group is made up of:

- Grundfos Solar circulation pump;

- safety valve for solar systems series 253;

- 2 loading/draining taps complete with hose holder;

- instrument holder fitting with pressure gauge;

- flow regulator with flow meter;

- air vent device;

- delivery thermometer;

- return thermometer;

- 2 shut-off valves and checks;

- preformed shell insulation.

 

The installation must be carried out by expert and qualified technical personnel.

 

Technical features

- Operating Pmax: 10 bar

- Safety valve temperature range: -30–160 °C

- Safety valve calibration: 6 bar

- Max flow meter temperature: 120 °C

- Max percentage of glycol: 50%

- Flow meter scale (l/min) 5–40

- PML 25-145 with PWM control

- Attacks 1 F

 

WARRANTY

The guarantee is the official Caleffi one and lasts 2 years.