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.
