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NOTE: Bottom feed humidifier shown with
field-supplied and installed control valve.
Sizes 03-14 are bottom fed. Sizes 17-61
are top feed.
Fig. 91 — Control Valve, Strainer and Trap Connected to Supply and Manifold of Humidifier
Assembly of Vertical Manifolds
The vertical distribution manifolds are inserted into the bottom
feed header by hand (slip fit) and then into the top header if any.
See Fig. 92.
•
Vertical slotted discharge manifolds must be installed with
the internal fishbone wick ends sloping up as in a "Y."
•
Do not force the vertical manifolds into the headers be-
yond the insulation.
•
Do not use any lubricants. Manually reform the ends
slightly if necessary.
•
Ensure discharge slots are perpendicular to the air flow.
•
On top fed 17-61 sizes, run a bead of RTV silicone caulk
around the junction of the vertical manifolds and top header.
Fig. 92 — Vertical Manifold
Coil Installation
NOTE: If installing a replacement coil, refer to Coil Removal sec-
tion on page 217 for instructions on removing existing coil.
INSTALLATION OF SINGLE HEIGHT COILS
(Medium Face Area Coils: sizes 03W to 30T and 36W, 40W, and
50W — Large Face Area Coils: sizes 03W to 14W and 17W,
21W, 25W, 30W, and 36W)
1.
Lock open and tag all power supplies to unit fan motor and
electric heaters if present.
2.
Remove service panel/coil connection panel and the upstream
service panel and set aside in a safe place.
3. a. Remove the flat corner plug from each end piece of the
top rail.
b. Extract the Torx
exposed cavity. (Do not mix these screws with oth-
ers; they are specific for this location. Set screws
aside for re-installation of the top rail.)
c. Remove the top rail by pulling out at a 45-degree
angle. Set top rail aside.
Do not handle the coil by the headers or connection nipples, as
irreparable damage might occur that is NOT covered by
warranty. Protect the finned surface from damage during all
handling and shipping.
4.
Slip the foam sealing sleeves on the connection nipples
before installing the coil.
5.
The coil may now be hoisted in through the top opening, or it
may be slid in through either side, taking care to avoid tipping
or dropping the coil. Some lower stacked unit sections may
1. Torx is a registered trademark of Camcar Textron.
131
a39-4413
T25 screw visible within the
1
CAUTION
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