IM 817-7 18 www.DaikinApplied.com
Coil Headers, Locations
Heating Only Units
Figure 41: Hot Water Only Unit (Coils 65, 66, 67)
Note: This arrangement available on AVV and AVS units only.
R
S
J
A
B
B
8-1/2"
(216mm)
13-3/4"
(349mm)
J
A
13-3/4"
(349mm)
8-1/2"
(216mm)
Air Flow
Left Hand Right Hand
Air Flow
R
S
S = Supply
R = Return
Figure 42: Steam Heating Only Unit (Coils 68, 69, 78, 79)
Note: This arrangement available on AVV and AVS units only.
R
S
16-1/8"
(410mm)
11"
(279mm)
Air Flow
R
S
16-1/8"
(410mm)
J
11"
(279mm)
K
H
Air Flow
Left Hand Right Hand
J
K
H
S = Supply
R = Return
Figure 43: Electric Heating Only Unit (Coils 12, 13)
Note: This arrangement available on AVV units only.
J
Air Flow
Right Hand
Figure 44: Electric Heating Only Unit (Coils 12, 13)
Right Hand
J
Air Flow
Notes:
1. All coils have same end supply and return connections.
2. Steam coils have a factory installed pressure equalizing valve and a 24ʺ
(610mm) long pressure equalizing line which terminates in a 1⁄2ʺ M.P.T. tting.
3. Steam/hot water connections may be same end as cooling coil connections,
but they are recommended to be opposite end to facilitate piping. (Must be
opposite end when using Daikin controls.)
4. Cooling condensate drain pan is shipped sloped down towards the cooling
coil connections but is eld reversible.
5. Electric heating coil power connections are right end only. Junction box has
1ʺ(25mm) and 2ʺ (51mm) (trade size) knockouts, 10-1⁄2ʺ (267mm) from right
end of the unit.
6. Coil stubs are 7⁄8ʺ I.D. (female) and terminate 9ʺ (229mm) from the end of
the unit.
7. Steam coils are 1-1⁄8ʺ female (sweat) connections and terminate 9ʺ (229mm)
from the end of the unit.
8. DX coils (G) have O.D. sweat connections. Interconnecting tube by others.
See table 7 for correct tubing size.
Table 3: Coil Connection Dimensions For Lettered Values
Unit Depth
Dimensions
A B H J K
in. 16-5/8 3-3/4 12-1/4 2-7/8 3 5
mm 422 95 311 73 76 127
in. 21-7/8 9 17-1/2 8-1/8 8-1/4 10-1/4
mm 556 229 445 206 210 260
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