Carrier 50PEC09-18 specifications Wire Electrical Connections, Mount Unit

Step 2 — Check Unit — Upon receipt of shipment at the jobsite, carefully check the shipment against the bill of lad- ing. Make sure all units have been received. Inspect the carton or crating of each unit, and inspect each unit for damage. En- sure the shipping company makes proper notation of any short- ages or damage on all copies of the freight bill. Concealed damage not discovered during unloading must be reported to the shipping company within 15 days of receipt of shipment.

NOTE: It is the responsibility of the purchaser to file all neces- sary claims with the shipping company.

5.Fasten the backplate onto the wall through the screw holes located in the back flange. Secure the subbase in place.

Step 4 — Wire Electrical Connections

WARNING

To avoid possible injury or death due to electrical shock, open the power supply disconnect switch and secure it in an open position during installation.

STORAGE

CAUTION

DO NOT store or install console units in corrosive environ- ments or in locations subject to temperature or humidity extremes (e.g., attics, garages, rooftops, etc.). Corrosive conditions and high temperature or humidity can signifi- cantly reduce performance, reliability, and service life. Always move units in an upright position. Tilting units on their sides may cause equipment damage.

Upon the arrival of equipment at the jobsite, immediately store units in their shipping cartons in a clean, dry area. Store units in an upright position at all times. Stack units a maxi- mum of 3 units high. Use pallets to separate each layer of units. DO NOT remove equipment from shipping cartons until equipment is required for installation.

UNIT PROTECTION — Cover console units on the jobsite with either shipping cartons, vinyl film, or an equivalent protective covering. Cap the open ends of pipes stored on the jobsite. In areas where painting, plastering, or the spraying of fireproof material has not been completed, all due precautions must be taken to avoid physical damage to the units and con- tamination by foreign material. Physical damage and contami- nation may prevent proper start-up and may result in costly equipment clean-up.

Examine all pipes, fittings, and valves before installing any of the system components. Remove any dirt found on these components.

Step 3 — Mount Unit

1.Unpack the unit from the shipping carton. Remove the front cabinet by lifting up and away from the backplate. Protect the cabinet from damage during installation by re- turning it to its original vinyl pack until required.

2.Remove compressor isolation plate shipping bolts (4), as shown in Fig. 15.

3.Using a carpenter’s square and a level, ensure the unit is level. Shim the unit if necessary to assure proper installation.

Poor or inadequate installation may result in noisy unit operation or unattractive appearance.

4.Select the proper fasteners to connect the backplate se- curely to the wall.

A

FIELD SUPPLIED

DISCONNECT SWITCH

HEAT PUMP		ROOM THERMOSTAT
	B

A= Two power wires for single-phase units.

B= 1 heat/1 cool/manual or auto changeover remote 24-V thermostat.

CAUTION

Use only copper conductors for field-installed electrical wiring. Unit terminals are not designed to accept other types of conductors.

All field-installed wiring, including the electrical ground, MUST comply with National Electrical Code (NEC) as well as all applicable local codes. In addition, all field wiring must conform to the Class II temperature limitations described in the NEC.

Consult the unit wiring diagram located on the inside of the compressor access panel to ensure proper electrical hookup. The installing (or electrical) contractor must make the field connec- tions shown in Fig. 16 when using field-supplied disconnect.

Refer to unit wiring diagrams Fig. 17-29 for a schematic of the field connections, which must be made by the installing (or electrical) contractor. Operating voltage must be within voltage range shown in Table 2.

Make all final electrical connections with a length of flexi- ble conduit to minimize vibration and sound transmission to the building.

SUPPLY VOLTAGE — Operating voltage to unit must be within voltage range indicated on unit nameplate.

EXTERNAL LOOP POWER CONNECTION — If the unit will be connected to an external loop pump or flow controller, connect the pump to the loop pump terminal block PB1. The maximum power handling is 4 amps at 240-v. The pumps will automatically cycle as required by the unit.

230-V OPERATION — All 208/230-v units are factory- wired for 208-v. The transformer wiring may be switched for 230-v operation (as illustrated on the wiring diagrams) by switching the RED and ORG leads at L1.

SHIPPING

BOLTS

Fig. 15 — Remove 4 Shipping Bolts on

Compressor Isolator Plate

WARNING

Disconnect electrical power source to prevent injury or death from electri- cal shock.

CAUTION

Use copper conductors only to prevent equipment damage.

NOTE: All customer-supplied wiring to be copper only and must conform to national and local electrical codes. Wiring shown with dashed lines must be field-supplied and field-installed. “B” wiring only required with systems using remote-mounted thermostats.

Fig. 16 — Typical Field-Installed Wiring

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