Carrier 50ZP024 Installation Instructions Manual Download

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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
condensate connection to ensure proper drainage. Make sure that

the outlet of the trap is at least 1 in. (25 mm) lower than the

drain--pan condensate connection to prevent the pan from
overflowing. See Fig. 9. Prime the trap with water. When using a

gravel apron, make sure it slopes away from the unit.
If the installation requires draining the condensate water away from

the unit, install a 2--in. (51 mm) trap using a 3/4 --in. OD tubing or

pipe. See Fig. 9

Make sure that the outlet of the trap is at least 1 in.

(25 mm) lower than the unit drain--pan condensate connection to

prevent the pan from overflowing. Prime the trap with water.
Connect a drain tube using a minimum of 3/4 --in. PVC, 3/4 --in.

CPVC, or 3/4 --in. copper pipe (all field supplied). Do not

undersize the tube. Pitch the drain tube downward at a slope of at
least 1 in. (25 mm) for every 10 ft (3 m) of horizontal run. Be sure

to check the drain tube for leaks. Prime trap at the beginning of the
cooling season start--up. Allowable glues for condensate trap

connection are: Standard ABS, CPVC, or PVC cement.

Step 7 — Install Electrical Connections

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal

injury or death.
The 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 an electrical wire connected to the unit ground

screw in the control compartment, or conduit approved for

electrical ground when installed in accordance with NEC,

ANSI/NFPA 70 American National Standards Institute/

National Fire Protection Association (latest edition) (in

Canada, Canadian Electrical Code CSA C22.1) and local

electrical codes.

WARNING

UNIT COMPONENT DAMAGE HAZARD

Failure to follow this caution may result in damage to the

unit being installed.

1. Make all electrical connections in accordance with NEC

ANSI/NFPA 70 (latest edition) and local electrical codes
governing such wiring. In Canada, all electrical

connections must be in accordance with CSA standard
C22.1 Canadian Electrical Code Part 1 and applicable
local codes. Refer to unit wiring diagram.

2. Use only copper conductor for connections between

field--supplied electrical disconnect switch and unit. DO

NOT USE ALUMINUM WIRE.

3. Be sure that high--voltage power to unit is within

operating voltage range indicated on unit rating plate. On

3--phase units, ensure phases are balanced within 2
percent. Consult local power company for correction of

improper voltage and/or phase imbalance.

4. Do not damage internal components when drilling

through any panel to mount electrical hardware, conduit,
etc.

CAUTION

HIGH--VOLTAGE CONNECTIONS — The unit must have a
separate electrical service with a field--supplied, waterproof

disconnect switch mounted at, or within sight from the unit. Refer

to the unit rating plate for maximum fuse/circuit breaker size and
minimum circuit amps (ampacity) for wire sizing.

The field--supplied disconnect may be mounted on the unit over
the high--voltage inlet hole. See Fig. 2--4.
Operation of unit on improper line voltage constitutes abuse and
may cause unit damage that could affect warranty.
ROUTING POWER LEADS INTO UNIT — Use only copper

wire between disconnect and unit. The high--voltage leads should
be in a conduit until they enter the unit; conduit termination at the

unit must be watertight. Run the high--voltage leads through the
hole on the control box side of the unit (see Fig. 10 for location).

When the leads are inside the unit, run leads to the control box

(Fig. 11). For single--phase units, connect leads to the black and
yellow wires; for 3--phase units, connect the leads to the black,

yellow, and blue wires (see Fig. 12).
CONNECTING GROUND LEAD TO UNIT GROUND — Refer

to Fig. 11 and 12. Connect the ground lead to the chassis using the

unit ground lug in the control box.

GROUND
LUG

INDOOR
FAN
RELAY

OUTDOOR FAN MOTOR
AND COMPRESSOR
START CAPACITOR

HIGH
VOLTAGE
LEADS

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