Connect Condensate Drain; Install Duct Connections - Carrier 50SD Install And Operation Instructions

CORNER #
1
2
3
4
TOTAL WEIGHT
5. Attach safety straps directly to the field supplied rigging straps
or clevis clip. Do not attach the safety straps to the lifting
brackets.
6. Use the top of the unit as a spreader bar to prevent the rigging
straps from damaging the unit. If the wood top is not available,
use a spreader bar of sufficient length to not damage the unit.
UNIT FALLING HAZARD
Failure to follow this warning could result to personal injury
or death.
Lifting point should be directly over the center of gravity for
the unit.
Step 6—Connect Condensate Drain
NOTE: When installing condensate drain connection be sure to
comply with local codes and restrictions.
Model 50SD disposes of condensate water through a 3/4 in. NPT
fitting which exits through the base on the evaporator coil access
side. See Fig. 2 & 3 for location.
Condensate water can be drained directly onto the roof in rooftop
installations (where permitted) or onto a gravel apron in ground-
level installations. Install a field-supplied condensate trap at end of
1
y
4
024 030
69 74
53 57
83 88
138 147
343 366
Fig. 4B—50SD Unit Corner Weights (in Pounds)
A
B
Fig. 5A—Unit Leveling Tolerances
x
50SD
036 042
87 93
68 72
104 111
174 184
433 460
C
MAXIMUM ALLOWABLE
DIFFERENCE (in.)
A-B B-C A-C
1/4 1/4 1/4
condensate connection to ensure proper drainage. Make sure that
the outlet of the trap is at least 1 in. lower than the drainpan
condensate connection to prevent the pan from overflowing (See
Fig. 7). When using a gravel apron, make sure it slopes away from
the unit.
Connect a drain tube using a minimum of 3/4 -in. PVC or 3/4 -in.
copper pipe (all field-supplied) at the outlet end of the 2-in. trap.
Do not undersize the tube. Pitch the drain tube downward at a
slope of at least 1-in. for every 10 ft. of horizontal run. Be sure to
check the drain tube for leaks. Prime trap at the beginning of the
cooling season start-up.
Step 7—Install Duct Connections
The unit has duct flanges on the supply- and return-air openings on
the side and bottom of the unit. For downshot applications the
ductwork can be connected to the roof curb. See Fig. 2 & 3 for
connection sizes and locations.
IMPORTANT: Use flexible connectors between ductwork and
unit to prevent transmission of vibration. Use suitable gaskets to
ensure weathertight and airtight seal. When electric heat is
installed, use fire proof canvas (or similar heat resistant material)
connector between ductwork and unit discharge connection. If
flexible duct is used, insert a sheet metal sleeve inside duct. Heat
6
2
3
048 060
97 99
74 76
116 119
193 198
480 492
C00071
C99065