26
VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Drain
INSTALLATION
TAP/SOFTENED WATER
The drain connection to a tap/softened water humidifi er is a ¾" (DN20) sweat
(soldered) fi tting. The installer should place a union directly after the factory
drain fi tting, provide a water seal of height H1 (from Table 23-1), and pipe.
To mount the humidifi er closer to the fl oor, see Figure 25-1. The installer needs
to rework the factory piping that connects the drain valve to the skim/overfl ow
fi tting, cut out the elbow, and repipe per the diagram.
RO/DI WATER OPTION
RO/DI systems have a 3/4" pipe thread (DN20) fi tting on the drain valve and
on the overfl ow fi tting. Prior to dumping into a drain, the installer needs to
connect the drain and overfl ow, provide a water seal of height H1 (from Table
23-1), and pipe.
Figure 25-2 provides fi ll and drain alternatives for Vaporstream humidifi ers with
the RO/DI option.
Check valve
Note:
Use a condensate pump rated for your
application. Pumps are rated by fl uid
temperature, head (pressure), and fl ow (gpm).
Contact your local DriSteem representative for
pump selection.
Inlet drain
water piping,
by installer
Discharge piping
by installer
Condensate pump
DC-1117
mc_022410_1155
Piping:
FIGURE 26-1: LIFTING WATER DRAIN
FIGURE 26-2: FILL AND DRAIN ALTERNATIVES FOR VAPORSTREAM HUMIDIFIERS WITH THE RO/DI WATER OPTION
Drain valve
Skimmer
port
Fill
valve
OM-7789
OM-4004
Drain valve
Skimmer
port
Fill
valve
Without end-of-season drain
With optional end-of-season drain
