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Vapor Power International LLC
551 S. County Line Road, Franklin Park, Il 60131
Phone: 630-694-5500 Fax: 630-694-2230
4.3
BOILER START UP
A.
Close drain valves.
B.
Open all system flow valves (inlet and outlet).
C.
Fill system with water. If a sight glass is provided, assure that it
indicates full.
WARNING
ENERGIZING THE HEATING ELEMENTS BEFORE COMPLETELY FILLING THE BOILER
WILL DAMAGE THE HEATING ELEMENTS, THUS VOIDING THE WARANTY. EVEN
THOUGH A LOW WATER CUTOFF IS PROVIDED WITH THE BOILER, THE BOILER
SHOULD NEVER BE SWITCHED ON WITHOUT FIRST ASSURING
THAT THE
BOILER IS
COMPLETELY FILLED.
4.3.1
Control Circuit Checkout
If a separate branch circuit is provided for the 120V control, close the
customer’s 120V branch circuit power switch; if a control circuit
transformer is provided, remove both the primary and secondary fuses and
jump a 120V power supply to the secondary of the control transformer.
A. Switch the control circuit power on, the switch should light to indicate
that the control circuit power is energized.
B. Circuits of heating elements will now be switched on by the step
controller or pressure controllers, and pilot lights will light indicating
that this function is taking place and, thus, that the controls are
operating correctly.
NOTE: IF A CONTACTOR “CHATTERS”, BLOW IT OUT WITH AIR AND THEN
CYCLE IT SEVERAL TIMES BY USING THE APPROPRIATE MANAUL
ENABLE TOGGLE SWITCH.
For boilers supplied with step controls, check the recycle feature by briefly
interrupting the control power – the step control should recycle and start in
a no- load condition. Perform maintenance checks of the control circuit
per paragraph 5.2
