Step 9 - Install External Condensate Trap And Line; Step 10 - Make Electrical Connections - Carrier WeatherMaster 50HC14 Installation Instructions Manual

Step 9 — Install External Condensate Trap
The unit has one
and Line —
nection on the end of the condensate pan and an alternate con-
nection on the bottom. See Fig. 16. Unit airflow configuration
does not determine which drain connection to use. Either drain
connection can be used with vertical or horizontal applications.
CONDENSATE PAN (SIDE VIEW)
STANDARD
SIDE DRAIN
Fig. 16 — Condensate Drain Pan (Side View)
When using the standard side drain connection, ensure the
red plug in the alternate bottom connection is tight. Do this be-
fore setting the unit in place. The red drain pan can be tightened
with a 1 / -in. square socket drive extension.
2
To use the alternate bottom drain connection, remove the
red drain plug from the bottom connection (use a
socket drive extension) and install it in the side drain connec-
tion.
The piping for the condensate drain and external trap can be
completed after the unit is in place. See Fig. 17.
All units must have an external trap for condensate drain-
age. Install a trap at least 4-in. (102 mm) deep and protect
against freeze-up. If drain line is installed downstream from the
external trap, pitch the line away from the unit at 1-in. per 10 ft
(25 mm in 3 m) of run. Do not use a pipe size smaller than the
unit connection ( 3 / -in.).
4
MINIMUM PITCH
1˝ (25 mm) PER
BASE RAIL
10´ (3 m) OF LINE
OPEN
VENT
TO ROOF
DRAIN
NOTE: Trap should be deep enough to offset maximum unit static
difference. A 4 in. (102 mm) trap is recommended.
Fig. 17 — Condensate Drain Piping Details
3 / -in. condensate drain con-
4
ALTERNATE
DRAIN PLUG
BOTTOM DRAIN
(FACTORY-INSTALLED)
1 / -in. square
2
3˝(76 mm)
MIN
SEE NOTE
ROOF
CURB
DRAIN PLUG
Step 10 — Make Electrical Connections
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Unit cabinet must have an uninterrupted, unbroken electri-
cal ground to minimize the possibility of personal injury if
an electrical fault should occur. This ground may consist of
electrical wire connected to unit ground lug in control com-
partment, or conduit approved for electrical ground when
installed in accordance with NEC (National Electrical
Code); ANSI/NFPA 70, latest edition (in Canada, Cana-
dian Electrical Code CSA [Canadian Standards Associa-
tion] C22.1), and local electrical codes.
NOTE: Field-supplied wiring shall conform with the limita-
tions of minimum 63°F (3°C) rise.
FIELD POWER SUPPLY — For
through-the-curb power, conduit must be used to route the
main power from the condenser end, via the power entry in the
corner post of the unit (see Fig. 18-20) to either the factory op-
tion disconnect or the bottom of the control box. 1-in. conduit
is provided wrapped around compressor. A second conduit is
provided with factory installed powered convenience outlet.
For those units that require conduit larger than 1-in., it must be
field supplied. Figures 18-20 show the wire routings.
If the field disconnect is larger than 100A, it must be at-
tached to the unit using accessory CRDISBKT001A00 — dis-
connect switch bracket (see Fig. 21). Follow the instructions
provided with this accessory. For smaller field disconnects, be
sure to use 1 / -in. screws to mount the disconnect directly to the
2
end panel (see Fig. 22). In either case, set the disconnect verti-
cal location on the unit so that a 90 degree fitting can be used to
connect the conduit to the disconnect.
Fig. 18 — Conduit into Factory Option Non-Fused
Disconnect or HACR
13
WARNING
those units without