Carrier 09DK Series Installation, Start-Up And Service Instructions Manual page 7

09DK020,024 67/33% Circuiting Modification — To con-
vert the 09DK020 or 09DK024 coil from the 50/50% to
67/33% circuiting, perform the following steps:
1. Use a mini tubing cutter to remove specified parts:
a. Both 3 / -in. diam tube nipples connecting the left
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hot gas header to the coil. See Fig. 6, Item A.
b. The 3 / -in. diam tube nipple connecting the left
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liquid header to the coil. See Fig. 6, Item B.
c. Caps, where 2 are located on the right gas header,
and one is located on the right liquid header. See
Fig. 6, Item C.
2. Attach following specified parts contained in the parts
kit. Perform phos-copper brazing on all field-made
connections while protecting adjacent joints from heat.
Fig. 6 — Parts Removed from 09DK020,024
(50/50%) Unit for 67/33% Circuiting
A
A C
Fig. 7 — Parts Added to 09DK020,024 Unit
(To Obtain 67/33% Circuiting)
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a. Cap the open stub tubes on the left headers, where
two are located on the gas header, and one on the
liquid header. See Fig. 7, Item A.
b. Insert both 3 5 / -in. length tube nipples into the
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open stub tubes located on the right side of the coil
to connect the right gas header to the top row of
the coil. See Fig. 7, Item B.
c. Insert the 4 / -in. length tube nipple into the
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16
open stub tubes on the right side of the coil to con-
nect the right liquid header to the bottom row. See
Fig. 7, Item C.
3. Install or replace filter-drier(s). Before charging the
system, install or replace filter drier(s) connected to
the liquid line near the indoor unit to prevent contami-
nation in the system.
B