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Vapor Power International LLC
551 S County Line Road, Franklin Park, Il 60115
Phone: 630-694-5500 Fax: 630-694-2230
2.0
MECHANICAL INSTALLATION
2.1 STEAM SUPPLY
Install a steam stop valve on the steam outlet of the boiler and pipe to the
equipment to be supplied with steam.
NOTE: IF THE BOILER IS TO BE CONNECTED TO A COMMON HEADER WITH ONE
OR MORE OTHER BOILERS, TWO STOP VALVES ARE REQUIRED BY CODE,
ONE OF WHICH SHOULD BE A NON RETURN TYPE, WITH A 1” VENT
PLACED IN THE LINE BETWEEN THE TWO VALVES.
Steam piping from the boiler to the equipment must be pitched to assure
proper drainage of condensate formed in the steam line.
NOTE: IT IS RECOMMENDED THAT ALL PIPING BE CHECKED FOR LEAKS BEFORE
INSULATING
.
2.2
WATER SUPPLY AND CONDENSATE RETURN
If a direct water feed is used (ie, no condensate return), the main water supply
must have a pressure at least 10 pounds greater than the maximum boiler
operating pressure.
If a gravity-feed condensate return is installed, the return must have a head at
least 1.1 times the boiler operating pressure (psi=0.454 x feet-of-head).
If a condensate return system is used, the pump should be sized to deliver
approximately (0.015 x KW) gpm at normal operating pressure and at least
the steaming rate at the maximum boiler operating pressure. The receiver
tank size (gal) should be at least three times the pump capacity (gpm).
2.3
BLOWDOWN
2.3.1 BOTTOM
If not factory installed, the slow opening blowdown valve, supplied with the
boiler, should be installed on the bottom drain
