Caleffi 278HE Series circulation group 3/4" F connections return connection with UPM3 pump - 1-13 l/min.

Caleffi 278HE Series circulation group 3/4" F connections return connection with UPM3 pump - 1-13 l/min.

 

The Caleffi 278HE Series circulation group has the function of regulating the temperature inside the boiler and is used on the primary circuit of solar systems . Safety devices are inserted in the group in order to guarantee regular monitoring of the circuit. This version has a return connection and is equipped with a Grundfos UPM3 Solar 15-75 high efficiency circulation pump with PWM control, 3/4 F connections. The PWM technology guarantees a drastic reduction in the power dissipated by the group   resulting in greater system efficiency .

The Caleffi Series 278HE circulation group is composed of: Solar circulation pump, Series 253 safety valve for solar systems, fill/drain tap, instrument holder fitting with pressure gauge, flow meter, return thermometer, shut-off and check valve, 2 hose holders , preformed shell insulation.

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

 

TECHNICAL FEATURES

- Connections: G 3/4" (ISO 228-1) F

- Maximum operating pressure: 10 bar

- Fluid temperature range: -10 – 110 °C

- Calibration: 6 bar

- Power supply: 230 V (AC)

- Maximum percentage of glycol: 50%

- Fluid of use: water, glycol solutions

- Flow meter scale: 1-13 l/min.

- Pump type: UPM3 15-75.

 

WARRANTY

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