Sit 845 SIGMA Manual De Instrucciones página 8

Main gas connection
G3/4 version (external thread)
- Connection with gasket (A)
Use gas pipes with a suitable flat annular surface to allow the use of a sealing gasket.
The locking ring thread shall comply with ISO 228.
Ensure the gasket is suitable for the use.
Apply the proper torque to the locking ring, according to the washer caracteristics, in order to ensure the seal.
WARNING
: do not over-tighten the locking ring.
- Connection with union joint (B)
Use SIT joint 0.982.001.
Ensure the locking ring is properly engaged.
Recommended torque range 40-60 Nm.
Do not overtorque.
Flange connections (flanges shall be according ISO 7005)
First screw the pipes into the flanges and then the flanges to the multifunctional control.
Recommended torque for flange retaining screws: 3 Nm.
Caution: check the"0" ring is properly placed in the groove of the flange.
Rp 1/2 connection
Prevent foreign matter from getting into the valve during installation. In particular, check the cleanliness of the
inlet and outlet pipes.
The connection must be made using gas pipes with Rp 1/2 ISO 7 thread. Torque: 25 Nm.
Connection to the pilot burner (versions with pilot burner outlet)
4 mm, 6 mm or 1/4'' pipes can be used. Use appropriately sized nut and olive. Tighten to 7 Nm torque.
WARNING
: if a pilot outlet is not required, you must seal the outlet using optional code no. 0.972.041
Torque: 7Nm.
A
B
pipe
connection with gasket
gasket
locking ring
locking ring
pipe
connection with union joint
SIT 0.982.001
9
GB