4
Installation
Step 4: HumidiPack or HumidiPackPlus Panel Insertion
The HumidiPack or HumidiPackPlus Panel consists of the header, inboard header plate, outboard support
plate, and active/inactive tubes (See Figure 4-1). For larger units a stainless steel center tube support will be
included.
Holes on the inboard header
plate are provided and self-
tapping sheet metal screws are
supplied. The wall of the duct or
air handler must be cut out. The
inboard header plate of the tube
assembly will mount to the duct
wall.
Ensure that
HumidiPack or
HumidiPackPlus panel
orientation has air flow
impinging against the inactive
tubes (without nozzles or
discharge orifices) first, then
against the active tubes (with
nozzles or discharge orifices).
Both the active/inactive tubes
must be level or slightly sloped
back toward the header. They
cannot be sloped downward.
Certain applications may dictate the use of a custom designed system without inactive tubes. In this
instance, HumidiPack/HumidiPackPlus panel orientation is such that air impinges against nozzle or discharge
orifice opening. The steam initially flows against airflow and then changes direction to flow downstream.
IMPORTANT: When lifting HumidiPack or HumidiPackPlus, do so by the eyehook on the header. The
outboard end of the tube assembly can be supported by lifting on the inactive tubes. Do not lift by
using the active tubes.
The outboard support plate is secured from any lateral movement by 3/8" panel nuts and 3/8" lag bolts (See Fig.
4-1). The holes to be drilled in the far side of the duct for the lag bolts can be sometimes difficult to locate. If this is
so, a threaded rod with a ground point on the end can be inserted in the panel nut. By sliding the panel through the
opening, the rod will pierce the duct wall indicating a drilling position for the lag bolt. Note that the panel should
slide into the duct and over any seams on the duct floor. A "leg" positioned on the lower outboard corner of the
panel facilitates this.
After ensuring both the inboard header plate and outboard support plate are secured, steam supply connections
from the Armstrong ACV control valve to the header can be made. If the HumidiPack/HumidiPackPlus is smaller
than the duct inside height and/or width the extra space should be blanked off to direct all air through panel.
Plan View
8.5"
From Boiler
Control Valve
Header
Header
2" NPT
Inlet
Inboard
Header
Plate
Inactive Tubes
1" Air Gap
1" Air Gap
1"/12" Slope
Inboard Header Plate
Active Tubes
Outboard
Support
Plate
Duct Size
B
(Overall Width)
A
Inactive Tubes
Drain
Drain
F&T Trap
F&T Trap
#10-16
Hex Head
Screws
Side View
Air Flow
Elevation View
Drip
Leg
From Boiler
Strainer
Figure 4-1Figure 4-1
Figure 4-1Figure 4-1
Figure 4-1
(4 Seiten)
(65 Seiten)
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