Bryant R-22 service manual Safety Considerations, Introduction, Installation Guideline, Seacoast

SAFETY CONSIDERATIONS

Installation, service, and repair of these units should be attempted only by trained service technicians familiar with standard service instruction and training material.

All equipment should be installed in accordance with accepted practices and unit Installation Instructions, and in compliance with all national and local codes. Power should be turned off when servicing or repairing electrical components. Extreme caution should be observed when troubleshooting electrical components with power on. Observe all warning notices posted on equipment and in instructions or manuals.

!WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could result in personal injury or equipment damage.

Puronr (R-410A) systems operate at higher pressures than standard R-22 systems. Do not use R-22 service equipment or components on Puronr equipment. Ensure service equipment is rated for Puronr.

Refrigeration systems contain refrigerant under pressure. Extreme caution should be observed when handling refrigerants. Wear safety glasses and gloves to prevent personal injury. During normal system operations, some components are hot and can cause burns. Rotating fan blades can cause personal injury. Appropriate safety considerations are posted throughout this manual where potentially dangerous techniques are addressed.

INTRODUCTION

This document provides required system information necessary to install, service, repair or maintain the family air conditioners and heat pumps using R22 or Puron refrigerant.

Refer to the unit Product Data for rating information, electrical data, required clearances, additional component part numbers and related pre-sale data. Installation Instructions are also available per specific models.

INSTALLATION GUIDELINE

Residential New Construction

Specifications for these units in the residential new construction market require the outdoor unit, indoor unit, refrigerant tubing sets, metering device, and filter drier listed in Product Data (PD). DO NOT DEVIATE FROM PD. Consult unit Installation Instructions for detailed information.

Add-On Replacement (Retrofit) - R22 to Puron

Specifications for these units in the add-on replacement/retrofit market require change-out of outdoor unit, metering device, and all capillary tube coils. Change-out of indoor coil is recommended. There can be no deviation.

1.If system is being replaced due to compressor electrical failure, assume acid is in system. If system is being replaced for any other reason, use approved acid test kit to determine acid level. If even low levels of acid are detected install factory approved, 100 percent activated alumina suction-line filter drier in addition to the factory supplied liquid-line filter drier. Remove the suction line filter drier as soon as possible, with a maximum of 72 hr.

2.Drain oil from low points or traps in suction-line and evaporator if they were not replaced.

3.Change out indoor coil or verify existing coil is listed in the Product Data Digest.

4.Unless indoor unit is equipped with a Puronr approved metering device, change out metering device to factory supplied or field-accessory device specifically designed for Puronr.

5.Replace outdoor unit with Puronr outdoor unit.

6.Install factory-supplied liquid-line filter drier.

!CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

Never install suction-line filter drier in the liquid-line of a Puronr system.

7.If suction-line filter drier was installed for system clean up, operate system for 10 hr. Monitor pressure drop across drier. If pressure drop exceeds 3 psig, replace suction-line and liquid-line filter driers. Be sure to purge system with dry nitrogen and evacuate when replacing filter driers. Continue to monitor pressure drop across suction-line filter drier. After 10 hr of runtime, remove suction-line filter drier and replace liquid-line filter drier. Never leave suction-line filter drier in system longer than 72 hr (actual time).

8.Charge system. (See unit information plate.)

Seacoast

Coastal units are available in selected models and sizes of Air Conditioners and Heat Pumps. These units have protection to help resist the corrosive coastal environment. Features include:

SArmor plate fins and epoxy coated coils

SComplete baked-on paint coverage

(both sides of external sheet metal and grilles)

SPaint coated screws

Coastal environments are considered to be within 2 miles of the ocean. Salt water can be carried as far away as 2 miles from the coast by means of sea spray, mist or fog. Line-of-sight distance from the ocean, prevailing wind direction, relative humidity, wet/dry time, and coil temperatures will determine the severity of corrosion potential in the coastal environment.

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