Step 11 - Install External Condensate Trap And Line; Step 12 - Make Electrical Connections - Carrier WeatherMaster 48HC14 Installation Instructions Manual

Fig. 24 — Orifice Hole
Step 11 — 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. 25. 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. 25 — 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 / -in. square socket drive extension.
1
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. 26.
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 ( / -in.).
3
4
BURNER
ORIFICE
3 / -in. condensate drain con-
4
ALTERNATE
DRAIN PLUG
BOTTOM DRAIN
(FACTORY-INSTALLED)
/ -in. square
1
2
MINIMUM PITCH
1˝ (25 mm) PER
BASE RAIL
10´ (3 m) OF LINE
TO ROOF
DRAIN
NOTE: Trap should be deep enough to offset maximum unit static
difference. A 4 in. (102 mm) trap is recommended.
Fig. 26 — Condensate Drain Piping Details
Step 12 — Make Electrical Connections
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Do not use gas piping as an electrical ground. Unit cabinet
must have an uninterrupted, unbroken electrical 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 compartment,
or conduit approved for electrical ground when installed in
accordance with NEC (National Electrical Code); ANSI/
NFPA 70, latest edition (in Canada, Canadian Electrical
Code CSA [Canadian Standards Association] 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. 27 and 28) to either the factory
option disconnect or the bottom of the control box. 1-in. con-
duit 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 27 and 28 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. 29). 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. 30). 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.
16
3˝ (76 mm)
MIN
OPEN
VENT
DRAIN PLUG
WARNING
those units
SEE NOTE
ROOF
CURB
without