Caleffi 279HE Series circulation group 3/4" F connections with delivery and return connection - UPM3 PUMP - 8–30 l/min

Caleffi 279HE Series solar thermal circulator 3/4" F connections with flow and return connection - UPM3 PUMP - 8–30 l/min

The Caleffi Series 279HE 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 flow and return connection and is equipped with a Grundfos UPM3 Solar 15-75 high efficiency circulation pump with PWM control designed for connection to a DeltaSol SLL 8–30 l/min digital regulator, 3/4" F connections.

PWM technology guarantees a drastic reduction in the power dissipated by the group   with a consequent greater efficiency of the system, in fact the pumps can work according to an internal control at constant speed or external PWM, using a specific regulator, which adapts the performance to the needs of the system.

The Caleffi Series 279HE circulation group is complete with:
- Solar circulation pump;
- safety valve for solar systems series 253;
- 2 loading/draining taps;
- instrument holder fitting with pressure gauge;
- flow meter;
- air vent device;
- delivery thermometer;
- return thermometer;
- 2 shut-off valves and checks;
- 2 hose holders.
Prepared for connection to DeltaSol SLL digital regulator.
With PWM control.
With insulation.

The installation must be carried out by expert and qualified technical personnel. Further information regarding installation methods and technical specifications is contained in the user manual supplied.

TECHNICAL FEATURES

- 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: glycol solutions, water

WARRANTY

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