Fulton Vertical Electric (FT-N) Thermal Fluid (hot oil) Heater - Manual (Page 66)

Fulton Thermal Corp.*Electric Thermal Fluid Heaters Manual* Version 2010-0423
Page 66
Low Inlet Pressure Switch
a) Slowly close the valve on outlet of main circulating pump observing heater inlet pressure
gauge. Note the pressure at which the switch trips. This pressure should be roughly the
set point of the switch minus any differential that is set.
High Outlet Pressure Switch
a) Note the original setting of the switch and turn adjustment screw counterclockwise while
observing heater outlet pressure gauge until switch trips. The pointer on the switch
should be within 2 psi of the observed pressure. Reset switch to the original set point.
Outlet
Inlet
Differential
Pressure Switch