Mechanical Connections - SIT Group 824 NOVA Manual De Instrucciones

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INSTALLATION
824 and 825 NOVA control valves comply with current safety standards. Nevertheless, their installation on appliances
must be verified in accordance with the specific standards for each installation.
In particular, it is necessary to ensure that requirements relating to the number and class of the automatic shut-off
valves and to the class of the pressure regulator are met.
All the installation, setting and adjustment operations must be carried out exclusively by qualified personnel on the
basis of the specific characteristics of the appliance. The valve is designed exclusively for installation inside gas
appliances and is not for outdoor use.

MECHANICAL CONNECTIONS

General recommendations
Do not tamper with sealed parts. Do not slacken assembly screws. Do not remove labels. Avoid blows (knocks, falls
etc.). Only remove dust caps when installing. Do not exceed recommended torques. Ensure that the gas flows in the
direction shown by the arrow on the valve body.
Prevent foreign matter from getting into the valve during installation. In particular, check the cleanliness of the inlet and
outlet pipes. Do not subject the valve to bending in excess of 35 Nm and to torque in excess of 25 Nm. Use only the
specified spanner grips when making the connections.
Main gas connection
The connection must be made using gas pipes with Rp 1/2 ISO 7 thread. Torque: 25 Nm. If, alternatively, flanges
(available on request) are used, first screw the pipes onto the flanges and then the flanges to the valve.
Recommended torque for flange retaining screws: 3 Nm.
Connection to the pilot burner
Ø4 mm, Ø 6 mm or Ø 1/4" pipes can be used. Use appropriately sized nut and olive. Tighten to 7 Nm torque.
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