4.5.2.
Connecting the calorifer to the domestic
water circuit (secondary circuit)
When making the connections, it is imperative that the standards and
corresponding local directives are respected.
n
Specific precautions
Before making the connection,
rinse the drinking water inlet
pipes
in order not to introduce metal or other particles into the
appliance’s tank.
n
Provision for Switzerland
Make the connections according to the instructions of the Société
Suisse de l’Industrie du Gaz et des Eaux. Comply with local
instructions from water distribution plants.
n
Safety valve
CAUTION
In accordance with safety rules, a safety valve calibrated
to 7 bar is mounted on the tank’s domestic cold water inlet.
France
: We recommend NF-marked hydraulic membrance safety
control units.
All countries except Germany: 7 bar safety valve (0.7 MPa)
Germany
: 10 bar safety valve (1.0 MPa) maximum.
4
Integrate the safety valve in the cold water circuit.
4
Install the safety valve close to the calorifer in a place which is
easy to access.
n
Size
4
The diameter of the safety unit and its connection to the calorifer
must be at least equal to the diameter of the domestic cold water
inlet on the calorifer.
4
There must be no cut-off element between the valve or the safety
unit and the domestic hot water calorifer.
4
The outlet pipe in the valve or safety assembly must not be
blocked.
To avoid restricting the flow of water in the event of overpressure:
4
The safety device drain pipe must have a uniform and sufficient
gradient and its diameter must be at least equal to that of the outlet
opening of the safety device (to prevent the flow of water being
hindered if the pressure is too high).
4. Installation
SR130
15
26/03/2014 - 300009755-001-03
