7
Fig. 13 — Optional Mixing Box
Step 3 — Connect Cooling/Heating Piping
Thoroughly review submittals and product literature detailing
unit operation, controls, and connections BEFORE beginning
the connection of the various cooling and/or heating mediums
to the unit. The supply and return connections are marked with
a “HS/CS” meaning Hot/Cold water Supply or inlet and “HR/
CR” meaning Hot/Cold water Return or outlet indicating fluid
flow direction into and from the coil. Refer to Fig. 14-17 and
Tables 2 and 3 for details and DX (direct expansion) coils
marking and piping locations.
DIMEN
S
ION
S
- INCHE
S
(MILLIMETER
S
)
Unit
S
ize
H
W
A
B
C
3
(76)
A
C
2.4(61)
4(102)
H
2.4(61)
3
(76)
1(25)
2(51)
2(51)
W
B
TOP VIEW
S
BTM/REAR INLET - 42DH
TOP/REAR INLET - 42DH
W
4(102)
2.4(61)
C
1(25)
H
A
A
B
A
2.4(61)
24
24
33
33
4
3
44
44
(610)
(610)
(
838
)
(
838
)
(1092)
(111
8
)
(111
8
)
2
8
2
8
3
7
3
7
47
4
8
4
8
(711)
(711)
(940)
(940)
(1194)
(1219)
(1219)
6
6
8
8
8
8
10
(711)
(711)
(940)
(940)
(1194)
(1219)
(1219)
1
8
.50
1
8
.50
20.25
20.25
20.25
22.75
3
1.00
(470)
(470)
(514)
(514)
(514)
(57
8
)
(7
8
7)
11
11
1
3
1
3
1
3
1
3
15
(279)
(279)
(
33
0)
(
33
0)
(
33
0)
(
33
0)
(
38
1)
06
0
8
10
12
16
20/22
3
0
CAUTION
Residue and loose particles resulting from manufacturing
and field piping techniques such as joint compounds, sol-
dering flux, and metal shavings may be present in the unit
and the piping system. This may cause damage to the unit.
Ensure system cleanliness when connecting to solar, do-
mestic or potable water systems.
