Carrier AirStream 42BHE06 - Step 6 - Make Piping Connections; Drain; Water Supply;Return Connections

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Fig. 12 — 42BVE Vertical Unit — Operating/Distributed Weight Calculations
Step 6 — Make Piping Connections
DRAIN
The unit has a double-sloped condensate drain pan to ensure prop-
er drainage. The condensate drain must be at least 3/4 in.
(19.05 mm) copper, galvanized, black iron, or PVC piping. Install
the trapped drain line in accordance with all applicable codes.
Slope drain away from unit to prevent overflowing and insulate
the line to prevent sweating.
Drain piping should be sloped a minimum of 1/8 in. (3.175 mm)
per ft away from the unit. See Table 5 and Fig. 3-8. Condensate
drain must be trapped for proper drainage and odor control. The
differential height of the trap inlet to outlet must be at least 1 in.
wg greater than the total static pressure of the unit. The differential
height of the outlet to the bottom of the trap must not be less than
the total static pressure of the unit.
The 42BVE units should be installed on a pad. The height of the
pad should be adequate to allow for a proper condensate trap. The
condensate trap shown in Fig. 13 is for a unit with a total static
pressure (TSP) of 2-in. wg (0.50 kPa) with a 1-in. wg (0.25 kPa)
safety factor for any change in operating conditions. The A dimen-
sion must equal the system TSP plus 1-in. wg (0.25 kPa). The B
dimension is one half of A, and C is the total of A + B + pipe
diameter.
The unit drain pan is equipped with a secondary connection that
must be piped to an open-site drain. This will prevent overflow
and possible building damage if the primary drain is blocked. The
secondary drain connection can be capped if potential overflow
will not damage the building or unit.
Fig. 13 — Condensate Trap
WATER SUPPLY/RETURN CONNECTIONS
Install piping in accordance with all applicable codes. The sup-
ply and return connections are marked on the coil stub ends with
an “S” on the supply (inlet) and an “R” on the return (outlet).
Blue letters mark chilled water connections, red letters indicate
steam or hot water connections. Install valves in lines in accor-
dance with valve manufacturer’s instructions. Be sure valves are
in proper operating position and are easily accessible for
adjustment. See Fig. 14 and Table 2 for hydronic coil piping con-
nection specifications.
Corner Weights — Vertical Units (42BVE)
a
NOTE(S):
a. Operating weight information is based on 8-row water-filled coils and double wall cabinet construction. For a different coil and cabinet option, use Table 1 Total Weight
Unit Correction Factor.
UNIT
42BVE
NO ELECTRIC HEAT (lb) WITH ELECTRIC HEAT (lb)
A B C D TOTAL A B C D TOTAL
06 60 62 59 51 232 66 73 69 55 263
08 61 63 59 51 234 66 74 70 55 265
10 73 79 71 60 283 79 91 82 64 316
12 74 80 72 61 287 80 92 83 65 320
16 86 97 84 70 337 92 110 96 73 371
20 105 123 101 83 412 110 138 114 86 448
30 127 156 123 98 504 132 172 137 110 541
40 152 193 146 115 606 156 211 161 116 644
LH COIL
A
B
D
C
RH COIL
D
C
A
B
CAUTION
Residue and loose particles resulting from manufacturing
and field piping techniques such as joint compounds,
soldering flux, and metal shavings may be present in the
unit and the piping system. Ensure system cleanliness when
connecting to water systems.
42BHE/BVE
UNIT
CASING
3.0"
(7.62 cm)
1.5"
(3.81 cm)
CLEAN-OUT
ALLOW A MINIMUM OF
“C” INCHES FROM BOTTOM
OF UNIT TO FINISHED FLOOR
(42BVE UNIT) OR TO FALSE
CEILING (42BHE UNIT).
C
B
A
NOTE: Dimension C is the total of A + B + the pipe diameter.