5. Exercise extreme caution when installing in
fiber glass or internally lined ducts.
6. High positive or negative static pressure ducts
or plenums have special requirements. High
positive static pressure ducts may require the
unit to be fitted with a fill cup extension kit.
High negative static pressure ducts will likely
require the drain rate of the humidifier to be
increased to compensate for the reduced
drainage caused by the suction.
7. Vertical downflow ducts may induce an
artificial static pressure necessitating a fill cup
extension kit.
8. Low temperature ducts below 60 F (15 C),
shallow ducts, or branch ducts might require
the use of a field supplied condensate drain
pan below the steam distributor. See Figure
#8.
9. The steam distributor mounting plate is
perpendicular to the steam distributor. When
the mounting plate is attached to the side of
the duct, the distributor is level. An upward or
downward slope to the distributor will result in
poor condensate drainage and “spitting”of
condensate in duct. See Figure #9.
-4-
SHALLOW DUCT
DRAIN PAN
DRAIN PAN
T-BAR CEILING TO DRAIN
BRANCH DUCT
Figure #8
Condensate Drain Pan
Wrong
Support
(IfNeeded) Correct
Always
Mount
Level
Wrong
Figure #9
Leveling Distributor
3/8"Threaded Rod
(FieldSupplied)
HexNut
FactoryAttache
d
SteamDistributor
Duct
Figure #10
Distributor Support
1. 2. 3.
1. Steam Distributor Mounting Plate
2. Cut Hole In Duct For Insertion Using Template
3. Mount With Four Sheet Metal Screws
Figure #11
Cutting Duct for Mounting
6
'
Min.
6'
Min.
MountSteam Distributor
AtLeast 6' (2 M) From Elbow
MultipleSteam Distributors
CanReduce This Distance
Figure #7
Steam Distributor Location