Control Cabinet Penetrations - Daikin AGZ-D Installation And Maintenance Manual

Control Cabinet Penetrations

Only the antenna cable(s) must be routed to the outside of
the control enclosure. All other terminations remain within the
control enclosure. To limit the risk of moisture damage, the
required external penetration should be made in the lower part
of the left stile of the control enclosure for DPS and MPS units
(Figure 50), or out the condenser box section of RoofPak units
(Figure 51).
The retrofit kit arrives with a patch plate containing two
watertight grommets pre-installed. You have several options
for using this plate. In most cases, only a single antenna will
be used, so one of the two grommets can be removed from the
patch plate and discarded (Figure
In this case, only a single penetration will be made through
the control enclosure. If two antennas are to be used, both
grommets will remain in place, and two penetrations will be
required. Alternatively, the grommets can be removed from the
patch plate entirely and installed directly into the sheet metal of
the control enclosure. Regardless of which method is used, it is
important that silicone sealant be used to seal all penetrations.
If two antennas are to be used, it is recommended to remove
the grommets and use the patch plate as a template for
marking the two penetration prior to drilling. When setting the
patch plate as a template, use a carpenter square and level
to ensure that the patch plate is aligned squarely with the unit
control enclosure.
On the outside of the unit enclosure, drill a 7/8ʺ hole using a
step drill bit, centered from right to left, no more than 6ʺ from the
bottom of the stile. Drill no deeper than necessary to ensure the
7/8ʺ hole is created. After doing this, a smaller diameter hole
should be present on the inside of the enclosure. Again using
the step drill bit, drill this hole on the inside of the enclosure to
a 5/8ʺ diameter. Drill no deeper than necessary to ensure the
5/8ʺ hole is created. Install the provided 5/8ʺ bushing
on the inside of the enclosure within the newly drilled hole. The
bushing should snap into place on the sheet metal.
You will install the patch plate on the outside of the enclosure,
using the self-tapping sheet metal screws included in the
hardware kit. Prior to installation, remove the protective plastic
from the patch plate. Apply a bead of silicone sealant around
the perimeter of the back side of the patch plate, ensuring that
all potential points of moisture entry are covered. Once the
plate is located as desired, press the grommet(s) into the 7/8ʺ
hole created previously. Again, use a carpenter square and
level to ensure that the patch plate is aligned squarely with the
unit control enclosure. The grommet(s) should snap into place
on the sheet metal. Using the drill and nut driver, screw the
patch plate in place using the four pre-drilled mounting holes
(Figure 54).
Next, temporarily attach the antenna to the top of the air-
handling unit, directly above the stile. The antenna's coaxial
cable is permanently affixed to the base, so you must feed the
free end through the grommet (from outside inward), and route
it to the top of the control enclosure, being careful to avoid sharp
edges or pinch-points within the cabinet. Loosely coil the excess
coaxial cable, and place it on top of the wire trough above the
unit controller (it will be connected later during the installation).
IM 1240-4 • INTELLIGENT EQUIPMENT
52).
(Figure 53)
Figure 50: Recommended Location for DPS and MPS
Control Enclosure Penetration
Figure 51: Recommended Location for RoofPak Control
Enclosure Penetration
Figure 52: Patch Plate with One Grommet Removed
Figure 53: 5/8" Bushing for Installation Inside Control
Enclosure
Figure 54: Patch Plate Installed
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Installation
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