EP18-72-IOMM-2015-7
Fulton Ltd
Page 10
INSTALLATION - 2
Adjust the steam pressure controls to suit the boiler application.
Itshouldbenotedthatboilersaredesignedtooperatemostefcientlyattheirmaximumoperating
pressure.
Where steam is required below a pressure of 60 psi (4 bar), consideration should be given to the
ttingofapressurereducingset.
Setting the pressure controllers
High Limit Controller
1. Set the controller range scale to 5 psi below the safety valve setting.
2. Set the differential scale to zero.
On/Off Controller
1. Set the Range Scale A to the maximum pressure required.
2. Set the Differential Scale B to give the required pressure differential between the boiler
heating elements being de-energised (switched off) and energised (switched on).
Valve Cisttedinthepressuresupplylinetoallowthetestingoftheboilerpressuresandthe
controllers.
2.7 STEAM PRESSURE CONTROL
High limit controller
On/Off controller
A B
C
Figure.6-Pressure Controllers