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Figure 32: Upflow coil installation
NOTICE
Dimension Y must be at least 2/3 of dimension Z. See
Table 6: Coil projection dimensions - XAU coils
Coil size
Dimension Y (in.) Dimension Z (in.)
XAUA18A
3 1/2
5 1/4
XAUA24B
4 1/2
6 3/4
XAUB30C
4 1/2
6 3/4
XAUB36D
5 1/2
8 1/4
XAUC42E
6 1/2
9 3/4
XAUC48F
6 1/2
9 3/4
XAUC60G
9
13 1/2
XAUD60G
9
13 1/2
XAUD60H
9
13 1/2
3. Install the plenum on the furnace and secure
with screws through the 1/2-in. flange out on the
plenum.
4. Cut an opening in the front of the supply air
plenum. See Figure 32, Figure 33, Table 6, and Table
7 for coil and coil access dimensions.
5. Using a folding tool and hand seamer, bend the
sides and top edges of the cut opening forward
from the plenum at a 90° angle. See Figure 33.
Table 7: Duct work dimensions (in.) - XAU coils
Cabinet
width
Cabinet
height
Coil shelf
opening
width
pre-form
Panel
height
Duct
connector
lower
Duct
connector
upper
Opening
width
pre-form
Opening
height
pre-form
Coil model
A (in.)
B (in.)
(minimum)
C (in.)
D (in.)
E (in.)
F (in.)
G (in.)
H (in.)
XAUA18A
13 1/2
22
9 1/2
19
19 1/2
13
11 1/2
18
XAUA24B
13 1/2
24
9 1/2
21
21 1/2
13
11 1/2
20
XAUB30C
16 1/2
26
12 1/2
23
23 1/2
16
14 1/2
22
XAUB36D
16 1/2
26
12 1/2
23
23 1/2
16
14 1/2
22
XAUC42E
20
28
16
25
25 1/2
19 1/2
18
24
XAUC48F
20
30
16
27
27 1/2
19 1/2
18
26
XAUC60G
20
34
16
31
31 1/2
19 1/2
18
30
XAUD60G
23 1/2
34
19 1/2
31
31 1/2
23
21 1/2
30
XAUD60H
23 1/2
38
19 1/2
35
35 1/2
23
21 1/2
34
Note:
All dimensions are in inches. See Figure 33, Figure 34, and Figure 36.
Installation Manual: XAF, XAH, and XAU Series - Full Cased and Uncased Coils for Cooling and Heat Pumps
23
Johnson Controls Ducted Systems