Step 6 - Make Piping Connections; Drain; Water Supply/Return Connections - Carrier AirStream 42BHE06 Installation, Start-Up And Service Instructions Manual

A
B
UNIT
42BVE
A B
06 60 62
08 61 63
10 73 79
12 74 80
16 86 97
20 105 123
30 127 156
40 152 193
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.
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.
D
C
LH COIL
Corner Weights — Vertical Units (42BVE)
NO ELECTRIC HEAT (lb)
C D
59 51
59 51
71 60
72 61
84 70
101 83
123 98
146 115
D
C
a
WITH ELECTRIC HEAT (lb)
TOTAL A B
232 66 73
234 66 74
283 79 91
287 80 92
337 92 110
412 110 138
504 132 172
606 156 211
42BHE/BVE
UNIT
CASING
ALLOW A MINIMUM OF
"C" INCHES FROM BOTTOM
OF UNIT TO FINISHED FLOOR
(42BVE UNIT) OR TO FALSE
CEILING (42BHE UNIT).
NOTE: Dimension C is the total of A + B + the pipe diameter.
Fig. 13 — Condensate Trap

WATER SUPPLY/RETURN CONNECTIONS

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.
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.
11
A
B
RH COIL
C D
69 55
70 55
82 64
83 65
96 73
114 86
137 110
161 116
3.0"
(7.62 cm)
C
1.5"
(3.81 cm)
CLEAN-OUT
CAUTION
TOTAL
263
265
316
320
371
448
541
644
A
B