Carrier 09DK Series Installation, Start-Up And Service Instructions Manual page 9

09DK028,034 40/40/20% Circuiting Modification — To
convert the 09DK028 or 09DK034 coil from the 50/50% to
40/40/20% circuiting, perform the following steps:
1. Use a mini tubing cutter to remove specified parts:
a. Four 3 / -in. diam tube nipples connecting the hot
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gas headers to the coil. See Fig. 10, Item A.
b. Both 3 / -in. diam tube nipples connecting the liq-
8
uid headers to the coil. See Fig. 10, Item B.
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. 10 — Parts Removed from 09DK028,034 (50/50%) Unit for 40/40/20% Circuiting
A
B
A
A B C
Fig. 11 — Parts Added to 09DK028,034 Unit
(To Obtain 40/40/20% Circuiting)
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a. Cap the open stub tubes on the left and right gas
and liquid headers with stub tube caps supplied in
the parts kit. See Fig. 11, Item A.
b. Insert the 7 / -in. diam header into the stub tubes
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located in the top row of the coil. See Fig. 11,
Item B.
c. Insert the 6-in. length U tube into the stub tubes
located in the bottom row of the coil. See Fig. 11,
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.
A
B
A
A