Page 9 of 18
Vapor Power International LLC
551 S County Line Road, Franklin Park, Il 60115
Phone: 630-694-5500 Fax: 630-694-2230
4.0 OPERATING INSTRUCTIONS
NOTE: PRIOR TO START UP, ANY HEATER OR CONTROL CABINET WHICH HAS
BEEN EXPOSED TO DUSTY, WET, AND/OR HUMID CONDITIONS MUST BE
THOROUGHLY CLEANED AND DRIED OUT. THE BUILD UP OF DUST AND
RUST MAY RESULT IN EXCESSIVE DAMAGE UNLESS THE FOLLOWING
PRECAUTIONS ARE UNDERTAKEN:
A. All electrical components should thoroughly cleaned and dried, and checked
for loose connections.
B. All electrical terminals should be thoroughly cleaned and dried, then hi-
potted or meggered to assure there are no shorts to ground.
C. Boiler should be inspected for stray objects, metal scraps, etc., which may
have accumulated during installation. All such materials must be removed
from the boiler prior to start up.
D. All power wiring connections should be checked to assure tight connections.
NOTE: HYDRO STEAM INDUSTRIES, AS MANUFACTURER OF THIS BOILER, WILL
NOT BE RESPONSIBLE FOR DAMAGES INCURRED AT THE TIME BOILERS
ARE STARTED UP UNLESS THE ABOVE STEPS HAVE BEEN TAKEN TO
ASSURE THE BOILERS ARE PROPERLY PREPARED FOR STARTUP.
NOTE: MAXIMUM OPERATING CONDITIONS AS STATED ON THE BOILER
NAMEPLATE ARE NOT TO BE EXCEEDED
4.1 GENERAL
The following section of this manual should be read in its entirety prior to
operating the boiler.
4.2 PRELIMINARY CHECKS AND ADJUSTMENTS
4.2.1 Pressure Control (Boilers supplied with proportioning step controls)
A. Pressure Setting –Most Model STR Boilers are provided with a
proportioning type pressure control system which regulates the boiler
output to match the system demand. This control should be set at the
required operating pressure but shall not exceed 90% of the safety valve
