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use and maintenance manual
The
In case of conveyed drain, blow the conveyor pipe so as to compensate the reaction force generating upon fluid drainage (refer
to the valve use manual supplied with the appliance).
Make one or more draining holes in the conveying pipe to drain any condensate.
Drain must take place in the atmosphere, direct the valve so as not to harm people or damage property.
NOTE: Clamp at no more than 1 m
IMPORTANT
m
The operation of the safety valves is affected by the load losses occurring in the drain conveyor pipe, if any, during
their opening. The load losses inside safety valve drain conveyor pipe must be equal to 0.The nominal diameter of the
drain pipe must be greater than or equal to the size of the outlet fitting of the safety valve. A diameter ≥ 1.5 DN (PSV)
is recommended.
SAFETY PRESSURE SWITCH
The safety pressure switch detects the steam generator pressure and is activated in case of steam pressure controller failure
(regulation pressure switch or pressure transducer) by permanently stopping the burner. The burner will be switched on again
only after the steam pressure value has decreased under the calibration pressure value of the safety pressure switch and the
control panel has been manually reset. For further details, refer to the manual of the supplied component.
IMPORTANT
m
The safety pressure switch is calibrated at 11 barg and is sealed.
IT IS FORBIDDEN
d
Modify the adjustment of the safety pressure switch.
General information
is supplied with the safety valves.
Typical suggested diagram
17
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