ROUTINE MAINTENANCE AND CARE

FOR THE EQUIPMENT OWNER

Consider the following information before maintaining or servicing equipment:

1.TURN OFF GAS SUPPLY AND THEN ELECTRI- CAL POWER TO YOUR UNIT AND INSTALL LOCKOUT TAG BEFORE SERVICING OR PER- FORMING MAINTENANCE.

2.Do not turn off electrical power to this unit without first turning off the gas supply.

3.When removing access panels or performing mainte- nance functions inside your unit, be aware of sharp sheet metal parts and screws. Although special care has been taken to reduce sharp edges inside the unit, be extremely careful when handling parts or reaching into the unit.

4.Failure to follow these instructions could result in serious injury or death.

Air Filter(s) — Air filter(s) should be checked at least every 3 or 4 weeks and changed or cleaned when necessary. Table 1 indicates the correct filter size for your unit. See Fig. 4 for filter access panel location.

1.Lift up and remove filter access panel.

2.While holding filter, tilt upper filter rack.

3.Remove filters by pulling up and out toward you from the track.

4.Inspect or replace filters.

5.Return filters t filter tracks. Note direction of airflow ar- rows on filter frame.

6.Reinstall filter access panel.

If you have difficulty in locating your air filter or if you have questions concerning proper filter maintenance, contact your dealer for instructions. When replacing your unit filters, always use the same size and type of filter that was originally supplied by the installer.

Units with outdoor air capability have a cleanable filter for the outdoor air. This filter should be checked semi-annually and cleaned as necessary with steam or hot water and a mild detergent. Do not use throwaway filters in place of cleanable filters.

.

Never operate your unit without filters in place. Failure to heed this warning may result in damage to the blower motor, compressor and/or evaporator coil. An accumula- tion of dust and lint on internal parts of your unit can cause loss of efficiency and, in some cases, fire that could result in serious injury or death.

Table 1 — Indoor-Air Filter Data for 48HJ

UNIT SIZE

INDOOR-AIR FILTERS

(Throwaway Fiberglass)

48HJ

Quantity

Size (in.)

 

004-007

2

16 x 25 x 2

008,009

4

16 x 25 x 2

012,014

4

20 x 20 x 2

NOTE: Replacement filters should be UL (Underwriters’ Laborato- ries) certified or equivalent.

FILTER ACCESS PANEL

Fig. 4 — Typical Filter Access Panel Location

(48HJ008-014 Shown)

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Carrier 48HJ004-014 specifications Routine Maintenance and Care For the Equipment Owner, Indoor-Air Filter Data for 48HJ
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48HJ004-014 specifications

The Carrier 48HJ004-014 series is a sophisticated line of rooftop HVAC units that are engineered for energy efficiency and superior temperature control. As part of Carrier's extensive range of commercial heating, ventilation, and air conditioning systems, these units are designed to cater to various applications, making them ideal for office buildings, retail spaces, and other commercial establishments.

One of the standout features of the Carrier 48HJ004-014 is its impressive energy efficiency. These units are equipped with advanced scroll compressors that optimize energy consumption while delivering reliable cooling and heating performance. The series boasts high SEER (Seasonal Energy Efficiency Ratio) and EER (Energy Efficiency Ratio) ratings, ensuring that businesses can manage their operational costs effectively.

In addition to energy efficiency, the 48HJ004-014 series incorporates innovative technologies that enhance performance. The units are designed with a multi-speed blower system that allows for precise airflow control, ensuring that indoor spaces maintain consistent and comfortable temperatures. This capability not only improves occupant comfort but also contributes to better energy management.

The Carrier 48HJ004-014 units are built with durability in mind. The robust construction includes a galvanized steel cabinet with a powder-coated finish, providing excellent resistance to corrosion and environmental stressors. This ensures a long lifespan for the equipment and minimizes maintenance needs, allowing businesses to focus more on their core operations.

Moreover, the series is equipped with advanced controls that simplify operation and improve efficiency. The intelligent control systems enable remote monitoring and management capabilities, allowing facility managers to adjust settings based on real-time conditions. This functionality is crucial for optimizing energy use and maintaining indoor air quality.

The Carrier 48HJ004-014 also prioritizes environmental considerations with options for environmentally friendly refrigerants, aligning with sustainability goals. The commitment to reducing carbon footprint while delivering high-performance heating and cooling solutions demonstrates Carrier's dedication to promoting greener technologies.

In summary, the Carrier 48HJ004-014 series stands out for its energy efficiency, innovative technologies, robust construction, and advanced control systems. This makes it a preferred choice for businesses seeking reliable and efficient HVAC solutions that enhance indoor comfort while also contributing to sustainable practices.
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