Fulton Ancillary Equipment SteamPac Unfired Steam Generators - Manual (Page 15)

Fulton Thermal Corp.*SteamPac Unfired Steam Generators Manual* Version 2010-0201
Page 15
d) Make sure two check valves are installed between the SteamPac and feedwater pump.
e) An end of the line trap should be installed in the SteamPac steam header.
f) There are three valves on the SteamPac: the main blowdown valve, the gauge glass
drain valve, and the water column drain valve. The SteamPac blow off valve supplied
with the SteamPac should be installed on the blow off pipe and connected to a blow off
receptacle of approved design.
g) With a pressure transducer, this control sends out a 4 – 20 ma signal to modulate the
thermal fluid valve. The controller also sends out a 120V signal to energize an air
solenoid on the modulating valve. In the event the steam pressure exceeds the set point
by (X) PSI, the valve will de-energize sending the modulating valve to its fail position.
h) All these procedures should be done in accordance with state and/or local codes. The
water column blow off valve and the gauge glass blow off valve should be connected to
the main blow off line.
Caution
Do not tamper with the safety features of the low water safety cut out.
i) Pressure Relief Valve
1. Limits maximum operating pressure of the SteamPac.
j) Operating Seam Pressure Control
1. Located at the control panel box is a digital process control. The
pressure control regulates the thermal fluid control valve, diverting the
flow of fluid when maximum pressure is reached and opening the valve
when the steam pressure falls below a predetermined level.
k) Sight Glass Isolation Valves
1. The brass sight glass isolation valves are equipped with an internal ball
check. In the event that a sight glass should break, the ball will seat,
preventing the discharge of steam and water. The brass valve stem must
be opened fully to enable this feature. If the valve is in any other position
than full open, the ball will not seat. For added safety all Fulton boilers
are equipped with gauge glass protectors.
l) High Limit Pressure Control
1. Located at the control panel box and connected to the steam pressure
gauge assembly by means of a copper tube. The pressure is usually set
10 to 15 PSI (.703 – 1.054 kg/cm
2
) above the operating pressure, but
below the maximum pressure of the pressure relief valve. If the pressure
exceeds the high limit pressure control setting, the SteamPac will
automatically shut off.