Page 24 • DRI-STEEM GTS Humidifier Installation, Operation, and Maintenance Manual
GTS-DI water supply piping
GTS-DI models control water level with a float valve, and have
a 3/8" pipe thread (DN10) connection. For DI models with the
end-of-season drain option, a solenoid valve is installed prior to
the float valve. The end-of-season feature shuts off the fill water
supply and drains the tank when there is no demand for humidity
for 72 hours. (This length of time is a default setting and is
user-adjustable. See the Vapor-logic4 Installation and Operation
Manual for more information.)
When using nonmetallic tubing for supply water, it must be
rated for 212 °F (100 °C) minimum continuous operating
temperature. DRI-STEEM recommends installing a 3' (1 m) piece
of noninsulated stainless steel pipe directly off the humidifier prior
to connecting to the nonmetallic tubing. When using nonmetallic
tubing, DRI-STEEM recommends the installer place a 2" (50 mm)
water seal/loop in the supply line to isolate steam during DI/RO
water system maintenance. (See Figure 21-1 on page 21.)
DRI-STEEM recommends installing a strainer in the water supply
line to prevent clogging of the solenoid valve or float valve orifice.
A strainer is highly recommended when the humidifier has the
end-of-season drain option. The strainer prevents particulate from
collecting at the solenoid valve seat.
In order to minimize DI/RO water use, disconnect factory piping
to the water tempering device and pipe directly to tap water.
WARNING!
If the GTS-DI humidifier is supplied with tap water, the float valve
assembly will become clogged and particulate will accumulate on the
low water cutoff switch (float switch). This will cause failure of a critical
safety circuit and the potential for a dry tank fire. A dry tank fire can
cause heat exchanger, vapor hose, and wire insulation failure, severe
property damage, severe personal injury, or death.
Important: Damage caused by
chloride corrosion is not covered by your
DRI-STEEM warranty.
Installation
Piping:
Water supply piping
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