
P a g e 6 2 • D R I - S T E E M D e s i g n G u i d e
D R I - S T E E M D e s i g n G u i d e • P a g e 6 3
P i p i n g a n e v a p o r a t i v e
h u m i d i f i c a t i o n s y s t e m
The drawing below shows a typical piping configuration for an
evaporative system. For detailed information about how to pipe a
specific DRI-STEEM evaporative humidifier, see the Installation
Guides available by product in DRI-CALC.
Figure 63-1:
Fill, drain and condensate return piping for a typical evaporative humidifier
Optional
condensate
return
piping from
dispersion
unit
Air vent
tube
6"
(152 mm)
" (DN20) minimum
condensate drain piping
rated for 212 °F (100 °C)
Install level
Install level
Steam vapor outlet
Shock arrester recommended to eliminate water hammer, by installer
Water supply line; water pressure range 25 psi to
80 psi (172 kPa to 582 kPa); water conductivity
minimum 100 µS/cm (2 gpg)
" (DN20) min. drain, skim and overow
piping rated for 212 °F (100 °C)
If run is over 10' (3 m), increase pipe to 1"
(DN32)
Flow line of drain piping after the water
seal must be below the drain valve to
ensure that humidier drains correctly
1" (25 mm) air gap
Open oor drain. Refer to
governing codes for drain
pipe size and maximum
temperature requirements.
H1
Pitch 1/8"/ft
(1%)
" (DN20) pipe
thread dispersion
unit condensate
return inlet
Table 63-1:
Heights required to overcome humidifier internal pressure
(H1 and H2)
Unit output Water seal height (H1) Air vent height (H2)
kW lbs/hr kg/h inches mm inches mm
≤ 48 ≤ 138 ≤ 62 12 305 22.5 572
49-64 139-183 63-83 15 381 27.5 699
> 64 > 183 > 84 18 457 30.5 775
H2: Air vent
height must
be equal to or
greater than
H2 (see table
below)
Komentáře k této Příručce