High-Voltage Connections - Carrier PH4G-B Series Installation Instructions Manual

14 seer single-packaged heat pump system with r-410a refrigerant

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PH4G--B: Installation Instruction

All units must have field-supplied filters or accessory filter rack

installed in the return-air side of the unit. Recommended sizes for

filters are shown in

Table

5. Size all ductwork for maximum required airflow (either heating or

cooling) for unit being installed. Avoid abrupt duct size increases or

decreases or performance may be affected.

Adequately insulate and weatherproof all ductwork located

outdoors. Insulate ducts passing through unconditioned space, and

use vapor barrier in accordance with latest issue of Sheet Metal and

Air Conditioning Contractors National Association (SMACNA)

and Air Conditioning Contractors of America (ACCA) minimum

installation standards for heating and air conditioning systems.

Secure all ducts to building structure.

7. Flash, weatherproof, and vibration-isolate all openings in building

structure in accordance with local codes and good building

practices.

A-B

1/4

(6.35)

Fig. 7 – Unit Leveling Tolerances

OPTIONAL

RETURN

AIR

OPENING

2˝

(50.8mm)

EVAP. COIL

Fig. 8 – Slab Mounting Detail

Step 6 – Provide for Condensate Disposal

NOTE: Ensure that condensate-water disposal methods comply with

local codes, restrictions, and practices.

The unit disposes of condensate through a 3/4 in. NPT female fitting that

exits on the compressor end of the unit. 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. 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 field-supplied 2 -in. (51mm) trap at the condensate

connection to ensure proper drainage. Condensate trap is available as an

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

MAXIMUM ALLOWABLE

DIFFERENCE in. (mm)

B-C

(6.35)

1/4

OPTIONAL

SUPPLY

AIR

OPENING

COND. COIL

accessory or is field-supplied. 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. Connect a drain tube using a

minimum of field-supplied 3/4-in. PVC or field-supplied 3/4-in. copper

pipe at outlet end of the 2-in. (51 mm) trap. (See

the tube. Pitch the drain tube downward at a slope of at least 1 in. (25

mm) every 10 ft (3 m) of horizontal run. Be sure to check the drain

trough for leaks. Prime the trap at the beginning of the cooling season

start-up.

1-in. (25 mm) min.

Step 7 – Install Electrical Connections

UNIT COMPONENT DAMAGE HAZARD

A-C

Failure to follow this caution may result in damage to the unit being

installed.

(6.35)

Make all electrical connections in accordance with NEC NFPA

A07925

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.

Use only copper conductor

field-supplied electrical disconnect switch and unit. DO NOT

USE ALUMINUM WIRE.

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.

Do not damage internal components when drilling through any

panel to mount electrical hardware, conduit, etc.

A07926

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. 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,NFPA 70

National Fire Protection Association (latest edition) (in Canada,

Canadian Electrical Code CSA C22.1) and local electrical codes.