Specifications

12
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Piping:
INSTALLATION
Supply water piping may be of any code-approved material (copper, steel,
or plastic). The fill valve connection size is a 1/4" pipe thread (DN8) fitting
except in Europe where it is a DN10 pipe thread fitting. In cases where water
hammer may be a possibility, consider installing a shock arrestor. Water
pressure must be between 25 psi and 80 psi (175 kPa and 550 kPa).
If water piping to humidifier is nonmetallic, we recommend that the first 3' (1
m) of water supply piping from the humidifier be metallic with a 2" (50 mm)
water seal or loop in the supply line to isolate steam from nonmetallic supply
piping.
Drain piping may be of any code-approved material (copper, steel, or plastic
rated for 212 °F [100 °C] minimum). If drainage by gravity is not possible, use
a reservoir pump rated for 212 °F (100 °C) water.
The final connection size is 3/4" (DN20) copper for the tank and frame
drains. Do not reduce this connection size. Pipe the tank and frame drains
separately, as shown in Figures 10-1 and 11-1, to prevent backflow of drain
water into the humidifier cabinet.
If the equivalent length of pipe from the humidifier drain to the plumbing system
drain is more than 10' (3 m), increase the pipe size to 1¼" (DN32).
See Figures 10-1 and 11-1 for more piping instructions.
Important: Install unions in the water supply and drain lines as shown in
Figures 10-1 and 11-1 to allow tank removal.
mc_062810_0930-VM
CAUTION
Hot discharge water
Discharge water can be as hot as
212 °F (100 °C) and can damage the
drain plumbing.
To prevent such damage from
humidifiers without water tempering,
allow the tank to cool before draining.
Humidifiers equipped with a water
tempering device such as a DriSteem
Drane-kooler need fresh make-up
water in order to function properly.
Make sure the water supply to the
water tempering device remains open
during draining.
Excessive supply water pressure
Supply water pressure greater than 80
psi (550 kPa) can cause the humidifier
to overflow.
mc_030910_1440
DriSteem's Drane-kooler, shown
mounted to a humidifier, tempers
discharged water. For other
Drane-kooler mounting options or
for more information, contact your
DriSteem representative/distributor,
or view the Drane-kooler product
data sheet in the literature section
at www.dristeem.com
OM-7398
mc_061710_1449
Supply water and drain piping
FIGURE 12-1: DRANE-KOOLER WATER TEMPERING DEVICE