Separator
Size
Minimum
Pipe Size
Suggested
Header Size
90
1/2"
3/4"
91
1/2"
2"
92
3/4"
2-1/2"
93
1"
3"
94
2"
5"
15
SteamStik Almuminum Manifolds
Preliminary Procedure
STEP 1: Check Shipment Against
Packing List.
All components are
listed on the packing slip. Report any
shortages
immediately
. If the
humidifier or accessories have been
damaged in transit, notify us and file
claim with the transportation company.
If your order covers more than one
unit, separate each complete unit.
Humidifier tagging and manifold
tagging will be the same as shown on
the packing list. Model, Serial Number,
Steam Pressure, Orifice and Orifice
Restriction (if any) are on the metal
plate on the humidifier body. Operator
for electric motor operated unit is
shipped separately but marked with
the serial number of the humidifier
with which it must be used. Be sure
serial numbers agree.
STEP 2: Spot Humidifier Locations.
Locate each humidifier according to
the engineer’s layout or as indicated
by your Armstrong Representative. If
you must locate the humidifiers
yourself, be sure to read and observe
the “Do’s and Don’ts” on the following
page.
Manifold Installation
STEP 3: Cut Hole in Duct or Plenum
for Manifold.
Cut a 2” hole for each
manifold location.
STEP 4: Insert Manifold in Duct.
Outlet holes must point upstream into
air flow with
all
SteamStik manifolds.
Where manifold is positioned
horizontally, use a spirit level.
Manifolds longer than one foot should
be supported. When supporting the
manifold on the far end allow for
manifold expansion and contraction of
1/2” - 1".
Continue installation with step 5
beginning on page 8.
90° Compression
Elbow and Tube
*
90° Compression Elbow
and Male End Adaptor
*When using 90° Elbow, maintain 2.65” Dimension)
Figure 15-2. Model 91 Single Manifold Installation
Figure 15-1. Model 90 Single Manifold Installation
Note: Maximum operating pressure is 15 psig. Steam system should have a neutral Ph of 7.2 to 7.6.
Description
Part No.
Manifold Outlet Fittings
Number of reducer bushing(s) supplied
Model 90 Horizontal
B4583
Model 90 Vertical
B4584
Model 91
B3931
Description
Part No.
Manifold Outlet Fittings
Number of reducer bushing(s) supplied
All 90/91 Installations
A4967B
Not Applicable
2 (1 inlet, 1 outlet)
Single Manifold Installation (reducer bushings A17891 included)
Elbow/Tube Fitting with
1/2" MNPT Connection
1 (inlet)
Multiple Manifold Installation
Table 15-1. Fittings and Adaptors
Multiple manifold applications will be supplied with (1) A4967B adapter each.
Vertical mounted manifolds will be supplied with an A4967B adapter.
Union/Nipple
(supplied by customer)
Support Rod
(supplied by customer)
Header Trap
must be drained
to atmosphere
F&T Steam Traps
(purchased seprately)
Figure 15-3. Multiple Manifold Installation
Table 15-2. Header size of manifold piping
out of humidifier
Single Manifold Installation (reducer bushings A17891 included)
Single Manifold Installation (reducer bushings A17891 included)
