Fulton Ancillary Equipment SteamPac Unfired Steam Generators - Manual (Page 32)

Fulton Thermal Corp.*SteamPac Unfired Steam Generators Manual* Version 2010-0201
Page 32
condition. A low flow rate through the heater will result in high film
temperatures leading to breakdown of the thermal fluid.
3. Multiple pressure switches and a differential pressure switch are used to
prevent this condition from occurring. These safeties must not be
bypassed at any time.
4. Exceeding the maximum operating temperature of the thermal fluid will
also result in thermal fluid breakdown. Fulton heaters are equipped with
a temperature limit switch (located on the front of the panel box) to
prevent this from occurring.
5. A high temperature limit switch acts as an over temperature safety
device. If the high temperature limit shuts down the unit, the manual
reset button on the limit switch must be pressed. The reset button on the
flame programmer must also be pressed to reset the unit before it can be
restarted.
24. Return Tank and Connecting Pipework
a) Typically Fulton SteamPacs are sold as a completely skidded packaged units which
include: a safety relief valve, steam separator (vertical models only), pressure gauge,
return system complete with feedwater pump plus controls, a blow-off separator,
automatic control valve and accessories similar to those found on a boiler.
b) The return tank is pre-piped on the skid except for the condensate return connection, the
vent connection, the overflow opening and the cold water make up.
c) The feedwater for our standard package should be maintained in a temperature range of
180°F. If higher temperatures are required, contact the factory for proper pump selection.
d) Where there is insufficient condensate return to maintain this temperature, it is
sometimes necessary to provide some alternative method of preheating such as steam
injection. This can be controlled using a thermostat and steam inlet solenoid valve.
e) The vent pipe must rise continuously so there are no low points where condensate could
accumulate and cause an obstruction. It must always terminate open to atmosphere
outside the building and be arranged in a manner which eliminates danger to personnel
or property in the event of a steam discharge.
f) Local water authority requirements must also be met where applicable.
25. Connection to Drains
a) Water softener finishing pipes and return tank overflows may be connected to drains in
accordance with water softener manufacturer’s instructions.
b) Blowdown pipe work must run to a suitable catch pit or receiver vessel to be cooled
before connection to the main drains. The blowdown separator may also be equipped
with a cooling kit.