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PSG • Safety groups

  • Hydraulic accessories
  • Safety groups

Safety group (SFR 1852550) with shut-off valve and check valve for hot water installations to protect the water heater. According to current legislation it is mandatory to install a safety group for each appliance that heats water.

Brand

Watts

Installation

The safety group should be connected directly to the cold water inlet of the hot water heater. The outlet side of the group should face down and should be connected to the drain pipe through the siphon (SSG). To prevent leaks from the safety group due to expansion when the water heats up, an expansion vessel should be installed. If the pressure of the water at the inlet exceeds 3 bar, it is advisable to install a pressure regulator (PRV).

The complete installation and commissioning instructions can be found in the manual under “Downloads”.

Function

  • To protect the hot water storage heater from pressure excess: As the water temperature increases, the pressure also increases inside the hot water storage heater (dilation of the water).
  • To isolate the hot water storage heater from the cold water supply: This function is carried out by the shut-off valve (also part of the safety group).
  • To prevent a backflow of hot water into the cold water piping system : The internal check valve prevents any backflow of hot water.

Specifications

  • Connection: G 3/4" M/F
  • Opening pressure: 7 bar
  • Maximum operating pressure: 10 bar
  • Replenishment flow rate: > 4000 liters/hour
  • Maximum discharge capacity: 10kW
  • Conforming to EN 1487
  • Accreditations: Belgaqua, NF, ACS

Accessories

Siphon for pressure safety group, type: SSG

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