Step 5 Ð Make Electrical Connections

Unit cabinet must have uninterrupted, unbroken elec- trical 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 elec- trical ground when installed in accordance with U.S.A. National Electrical Code (Ref: ANSI/NFPA 70-1987) or equivalent local electrical codes. Failure to follow this warning could result in the installer being liable for per- sonal injury of others.

FIELD POWER SUPPLY Ð Pigtails are provided for ®eld wire connections. Use factory-supplied splices or copper/ aluminum connector.

When installing units, provide a disconnect per local codes. All ®eld wiring must comply with local requirements.

Install conduit through side panel openings. For units with- out electric heat, install conduit between disconnect and con- trol box. Install power lines to terminal connections as shown in Fig. 6. For units with electric resistance heat, refer to Table 2 to determine appropriate power wiring ®gure (Fig.7-13) and route lines as indicated in appropriate ®gure.

Voltage to compressor terminals during operation must be within voltage range indicated on unit nameplate (also see Table 2). On 3-phase units, voltages between phases must be balanced within 2% and the current within 10%. Use the for- mula shown in Table 2, Note 3 to determine the % voltage imbalance. Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components. Such operation would invalidate any applicable Carrier warranty.

When electric heat is installed, remove knockouts for ap- propriate size conduit from unit block-off panel and single point box. Install conduit (rigid or electro-metallic tubing) through conduit drip boot as shown in Fig. 14. Drip boot eliminates the need for water tight conduit ®ttings at the single point box. Refer to Fig. 15 for component locations.

LEGEND

CÐ Contactor

IFC Ð Indoor-Fan Contactor

TB Ð Terminal Block

Field Wiring

Factory Wiring

Splice Connection (Factory Supplied)

Fig. 6 Ð Power Wiring Connections

LEGEND

FOR FIG. 7-13

EQUIP

Ð

Equipment

FU

Ð

Fuse

GND

Ð

Ground

HTR

Ð

Heater

TB

Ð

Terminal Block

Fig. 7 Ð Electric Heater Power Wiring Connections Ð 50LJQ, 220-3-50 and 400-3-50;

Single Point Kit 50DJ902021 and 50DJ902071

7

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Carrier 012, 50LJQ008 installation instructions Equip, Gnd, Htr
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012, 50LJQ008 specifications

The Carrier 012,50LJQ008 is a state-of-the-art air conditioning unit, specifically designed to provide optimal temperature control and energy efficiency for residential and commercial applications. As part of Carrier's renowned portfolio, this model incorporates innovative technologies and user-friendly features that set it apart from competitors in the market.

One of the standout characteristics of the Carrier 012,50LJQ008 is its high energy efficiency rating. Equipped with advanced inverter technology, this unit adjusts its cooling output based on the ambient temperature and humidity levels, reducing energy consumption while maintaining consistent comfort. This not only lowers utility bills but also minimizes the environmental impact, making it a sustainable choice for modern living.

In terms of cooling capacity, the Carrier 012,50LJQ008 offers a formidable performance, capable of efficiently cooling spaces of varying sizes. Its robust compressor ensures rapid cooling while remaining remarkably quiet, which is particularly advantageous for residential settings. The unit’s capacity to handle high ambient temperatures allows it to perform reliably even in extreme weather conditions, ensuring comfort during the hottest days of summer.

Another key feature is the user-friendly interface. The Carrier 012,50LJQ008 comes with a digital control panel that allows users to easily set their desired temperature and adjust fan speeds according to their preferences. Additionally, it offers remote control functionality, providing convenience and ease of use for homeowners and occupants alike.

The design of the Carrier 012,50LJQ008 incorporates advanced air filtration technology, including a multi-layer filter system that captures allergens and airborne particles. This not only improves indoor air quality but also contributes to the longevity of the unit by preventing dust buildup. The filters are easily accessible for cleaning and replacement, ensuring the system runs efficiently.

Durability is another critical aspect of this model. Constructed with high-quality materials, the Carrier 012,50LJQ008 is designed to withstand varying environmental conditions. Its corrosion-resistant outdoor unit ensures a longer lifespan, while comprehensive warranties provide peace of mind to users.

In summary, the Carrier 012,50LJQ008 is an exemplary air conditioning unit that combines energy efficiency, advanced technology, and user-centric features. Whether for a family home or a commercial space, its superior performance, reliability, and ease of use make it an excellent choice for maintaining optimal comfort year-round.
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