Bryant 538J-18-1 manual II. RIG and Mount Unit, Mounting on Ground, Mounting on Roof, Rigging

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II. RIG AND MOUNT UNIT

A. Mounting on Ground

Mount unit on a solid, level concrete pad. Position unit so water or ice from roof does not fall directly into unit. Field- fabricated stacking kits can be used when units are to be stacked. If conditions or local codes require unit to be fas- tened to a pad, 6 field-supplied tiedown bolts should be used and fastened through slots provided in unit mounting feet.

B. Mounting on Roof

Mount unit on level platform or frame at least 6 in. above roof surface. Isolate unit and tubing from structure.

C.Rigging

CAUTION: Be sure unit panels are securely in place prior to rigging.

Keep unit upright. Lift unit using sling. Use cardboard or padding under sling, and spreader bars to prevent sling damage to unit. See Fig. 3. See Fig. 2 for center of gravity ref- erence. Install unit so coil does not face into prevailing winds. If this is not possible and constant winds above 25 mph are expected, use field-fabricated wind baffle.

NOTE: Accessory wind baffles should be used on all units with accessory low-ambient control.

Field-fabricated snow stand may be used to raise unit when operation will be required during the winter. Units may also be wall mounted using the accessory wall mounting kit.

III. COMPLETE REFRIGERATION PIPING CONNECTIONS

Outdoor units may be connected to indoor units using field- supplied tubing of refrigerant grade and condition. See Tables 1A and 1B for correct line sizes. Do not use less than 10 ft (3 m) of interconnecting tubing.

CAUTION: DO NOT BURY MORE THAN 36 IN. (922 mm) OF REFRIGERANT PIPE IN THE GROUND. If any section of pipe is buried, there must be a 6 in. (154 m) vertical rise to the valve connections on the outdoor unit. If more than the recommended length is buried, refrigerant may migrate to the cooler, buried section during extended periods of system shut- down. This causes refrigerant slugging and could dam- age compressor at start-up.

When more than 50 ft (15.2 m) of interconnecting tubing and more than 30 ft (9.1 m) of vertical lift is used, refer to Part 3 of the System Design Manual for design details, or contact your local distributor.

If either refrigerant tubing or indoor coil is exposed to atmo- spheric conditions for longer than 5 minutes, it must be evac- uated to 1000 microns to eliminate contamination and moisture in the system.

Run refrigerant tubes as directly as possible, avoiding unnecessary turns and bends. Suspend refrigerant tubes so they do not damage insulation on vapor tube and do not transmit vibration to the structure. Also, when passing refrigerant tubes through the wall, seal opening so that vibration is not transmitted to structure. Leave some slack in refrigerant tubes between structure and outdoor unit to absorb vibration. Refer to separate indoor unit installation instructions for additional information.

Fig. 3 — Lifting Unit with Sling

A. Check AccuRater® Control

The AccuRater refrigerant control is required for cooling sys- tem capacity optimization. An AccuRater device with field- replaceable piston should be supplied with the indoor unit. Refer to AccuRater metering device table in separate indoor unit installation instructions to determine the correct Accu- Rater piston size required for the condenser/evaporator sys- tem being installed.

Note that one of 2 types of the AccuRater devices can be used. Use Type A only if Type B is unavailable. See Fig. 4. Do not interchange components between AccuRater device types. Matching of outdoor unit with indoor unit may require field replacement of piston. Replace piston, if required, before connecting refrigerant lines. Piston replacement instructions are included in the indoor unit installation instructions. After system installation is complete, see Refrigerant Charging section on page 8 to check and/or adjust refrigerant charge.

The 538J series units may also be installed with units using a thermostatic expansion valve (TXV). If a TXV is used, be sure to remove the piston from the indoor coil. See installa- tion instructions shipped with the TXV for proper position- ing and adjustment.

TYPE A (FIELD-INSTALLED BYPASS TYPE)

TYPE B (RECOMMENDED)

NOTE: Arrow on AccuRater body points in free-flow direction, away from the indoor coil.

Fig. 4 — AccuRater Metering Device Components

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Contents Contents Safety ConsiderationsInstallation Complete PRE-INSTALLATION Checks 538J018-060 Dimensional Drawing Rigging II. RIG and Mount UnitMounting on Ground Mounting on RoofIV. Make Electrial Connections Accessory InstallationPhysical Data SI Physical Data EnglishIFR IFMSTART-UP Preliminary Checks Service Outdoor FANIII. Internal Current and Temperature Sensitive Overload IV. Pumpdown ProcedureVIII. Refrigerant Charging LOW Pressure SwitchVI. Service Valves VII. Accurater Bypass Type DeviceOutdoor Indoor Coil Entering AIR F WB Temp F Subcooling Method Cooling, TXVRequired Liquid Line Temperature C SI At Service Valve Maintenance LubricationIII. Cleaning Coils Required Liquid Line Temperature F English At Service ValveTroubleshooting Troubleshooting Chart Cooling Cycle Copyright 2002 Bryant Heating & Cooling Systems

538J-18-1 specifications

The Bryant 538J-18-1 is a high-performance air conditioning unit designed to provide optimal comfort and efficiency in residential and light commercial settings. This model is notable for its advanced technology and robust design, catering to the needs of modern consumers looking for reliable climate control solutions.

One of the main features of the Bryant 538J-18-1 is its energy-efficient operation. Equipped with a SEER (Seasonal Energy Efficiency Ratio) rating that exceeds the minimum standards, this unit helps homeowners save on energy costs while reducing their environmental footprint. The unit’s compressor utilizes variable speed technology, allowing it to adjust its operation based on cooling demand. This not only enhances energy efficiency but also contributes to quieter performance.

The Bryant 538J-18-1 is constructed with durable materials to endure various weather conditions. Its cabinet is made with galvanized steel, ensuring longevity and resistance to rust. Additionally, the unit features a powder-coated finish that protects against UV rays and other environmental stressors, enhancing both aesthetics and durability.

Smart technologies are integrated into the Bryant 538J-18-1, making it compatible with advanced climate control systems. The unit can be seamlessly connected to smart thermostats, allowing users to monitor and adjust settings remotely through mobile applications. This feature promotes convenience and allows for precise temperature control, ensuring optimal comfort throughout the home.

The unit's refrigerant choice also reflects a commitment to environmental responsibility. The Bryant 538J-18-1 utilizes R-410A refrigerant, which is known for its lower impact on the ozone layer compared to older refrigerants. Furthermore, the unit is designed for easier serviceability, with access panels that simplify maintenance and repairs.

In terms of specifications, the Bryant 538J-18-1 boasts a cooling capacity of 1.5 tons, making it suitable for a variety of indoor environments. The operational sound levels are minimal due to its innovative design, which incorporates sound-dampening features, ensuring a peaceful atmosphere.

Overall, the Bryant 538J-18-1 stands out as a reliable, efficient, and technologically advanced air conditioning solution, making it an excellent choice for those seeking comfort without compromising on sustainability or performance. With its array of features and innovative technologies, this unit is well-equipped to meet the diverse needs of modern living spaces.
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