17
First of all it is necessary to check that the device is in conformity with the type of gas distributed. For this
purpose, you must refer to the indications shown on the identification plate.
The gas supply must be appropriated to the power of the heater and be equipped with all the security and
inspection devices required by current standards.
A precise study must be carried out on the diameters of the piping depending on the type and the flow of
gas and the length of the piping. It is necessary to make sure that pressure drops in the piping do not
exceed 5 % of the supply pressure.
The gas connections must be made in conformity with the recommendations for indoor installations
whatever the type of gas, by qualified personnel holder of necessary approvals.
Check the tightness of gas fittings after each maintenance operation till the gas valve of the heater
Gas connection type:
A-
Over 50 mbar natural gas supply
B-
Under 50 mbar natural gas supply
C-
LPG supply
Composition of heater gas kit*
1–
Gas seal (supplied with the heater)
2–
Gas connection 3/4-1/2 (supplied with the unit till 45 kW)
3–
Gas regulator
4–
Gas filter
5–
1/4 turn gas valve
*For more information about component details, refer to the notice given with the gas kit connection.
A
C
B
3.3 Gas connection
