fIGURe 10
If the dispersion tube must be mounted below the humidifier or
if the steam hose needs to run up and over an obstruction, a drip
tee with drain trap, Part #4028, must be installed as shown in
figure 9
. When using a fan pack, install Part #4028 close to the
humidifier outlet to help prevent noise from gurgling as shown in
figure 10
.
noTICe
CONTROL CONDENSATE FLOW AND COLLECTION.
Failure to follow steam hose recommendations in this
manual can result in reduced or erratic performance,
increased noise and condensate in the duct.
DISTanCe fRoM HUMIDIfIeR To
DISPeRSIon TUbe/fan PaCk
The capacity of the humidifier is reduced by the length of
the steam hose or pipe due to condensation . The maximum
recommended length of steam hose is 6 feet . Use hard pipe
insulated with 1” fiberglass for lengths greater than 6 feet .
Table 4
provides humidifier capacity with various lengths of
steam hose and pipe . If 6-foot steam hose does not reach from
humidifier to dispersion tube, splice in 1” copper pipe using
3/4” x 1” reducing couplings as shown in
figure 11
.
InSTallaTIon InSTRUCTIonS
(ConTInUeD)
Pitch
Obstruction
90° long
sweep or two
45° elbows
6" min
8" min
Insulate hard pipe to
reduce steam loss
1" air gap
Open drain required,
see
note 1
.
Drip tee installation for
piping over obstruction,
or if dispersion tube is
lower than humidifier.
NOTES:
1. Refer to governing codes for
drain pipe size and materials.
2. Support steam hose so there
are no sags or low spots.
Drip tee
Drain trap
Part #4028
To Dispersion
Tube/Fan Pack
fIGURe 9 – Dispersion Tube Mounted below Humidifier
90-1520
90-1527
90-1844
Steam Hose
Steam Hose
1-1/2" Hose Clamp
1-1/2" Hose Clamp
1" Copper Pipe
3/4" x 1"
Reducing Coupling
Humidifier
To Steam
Dispersion
Tube or
Fan Pack
#4028 KIT
CONTENTS:
Hose Clamps (5)
Trap (1)
Tee Assembly (1)
Tee
Assembly
Flared
End
Trap
Note:
Prime with water
before using humidifier
Hose Clamp
Hose
Clamp
Hose Clamp
To Steam
Dispersion Tube
or Fan Pack
Steam
Hose
1" I.D.
Steam Hose, 1" I.D.
(Downward Slope to Tee)
Drain Hose
7/8" I.D.
Steam Hose
1" I.D.
(Downward
Slope from
Humidifier
to Tee)
Hose Clamp
Steam
Humidifier
fIGURe 11
12
