Settings And Adjustments; Maintenance - Sit 630 EUROSIT 120 Manual

Main gas connection
The connection must be made using gas pipes with Rp 3/8 ISO 7 thread. Torque: 25 Nm.
Alternatively, it is possible to use the nut and bicone connection for
(torque 15 Nm).
The valve has two main gas inlets (
It is necessary to close the unused inlet and outlet screwing in the specified plug fully (code 0.972.058). Torque 7 Nm.
Connection to the pilot burner
outlet
8
4 mm, 6 mm or 1/4" pipes can be used.
Ø Ø Ø
Use appropriately sized nut and olive.
Tighten to 7 Nm torque.
CAUTION: After connecting to gas, check for gas leakage.
REMOTE COMMAND FITTING
See Fig. D. Insert completely the coupling pin (made as
Fig. E, page 7) with the spline side (16) aligned with the
screw threaded M5 hole. Use it to fix the coupling pin with
a plane head screw.
Max. load admitted: see Fig. F, page 7.

SETTINGS AND ADJUSTMENTS

All adjustments must be made on the basis of the specific characteristics of the appliance.
Check inlet and outlet pressure using the pressure test points
the provided screws. Recommended torque: 2.5 Nm.
Adjusting maximum and minimum outlet flow
These adjustments must be made when the thermostatic bulb is cold.
Maximum flow
Turn the knob to position 7. Screw in the adjustment screw
4
increase the gas flow.
CAUTION: After screwing in fully, do not unscrew the adjustment screw more than two turns.
Overriding the flow adjustment function
Screw in the adjustment screw
adjustment function may be excluded by substituting the adjustment screw
In this case the plug must be fixed firmly.
Minimum flow
Starting from position 7, slowly turn the knob clockwise to the minimum flow position (just before the main burner
shut-off). Turn screw anticlockwise to increase the flow. It is possible to use screws with calibrated holes (available
3
on request) to replace the maximum and minimum flow adjustment screws. In this case, it is necessary to tighten these
screws to a torque of 7 Nm.
Adjustment of gas flow to the pilot burner
Turn screw clockwise to reduce the flow.
5
Overriding the pilot flow adjustment function
Screw in adjustment screw fully and then unscrew it two complete turns.
5
Seal the adjustment.
Changing the gas family or group
Check that the appliance is suitable for operation with the gas family or group desired.
Following the instructions given above, adjust the outlet pressure to the values given in the appliance's instruction
booklet. With Family III gas: override the maximum flow adjustment or the pressure regulator according to the version.
Override the adjustment of the gas flow to the pilot burner.
IMPORTANT: At the end of all setting and adjustment operations, check gas seals and the efficiency of the appliance.
It is particularly important to check that flame lift or light back to minimum and maximum outlet pressures are absolutely
impossible. After carrying out all adjustments, fit the provided seals and/or block the setting screws with paint.

MAINTENANCE

The only maintenance operation permitted is the replacement of the magnet unit. This operation must be carried
out by qualified personnel only and according to the instructions provided in the instruction leaflet supplied with
the spare parts.
6
and ) and two main gas outlets (
10
12
and
6
2
fully, unscrew it two complete turns and seal it. Alternatively, the gas flow
2
12 mm pipe (codes 0.958.025 and 0.957.007)
Ø
and ).
13
11
16
Fig. D
. After testing, carefully seal test points with
7
fully, turn the adjustment screw anticlockwise to
with the plug code 0.972.057.
2