Bryant 569J Installation Manual download pdf (Page 2)

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service,

maintenance, or use can cause explosion, fire, electrical

shock or other conditions which may cause personal

injury or property damage. Consult a qualified installer,

service agency, or your distributor or branch for

information or assistance. The qualified installer or

agency must use factory-authorized kits or accessories

when modifying this product. Refer to the individual

instructions package

Follow all safety codes. Wear safety glasses and work

gloves. Use quenching cloths for brazing operations and

have a fire extinguisher available. Read these instructions

thoroughly and follow all warnings or cautions attached to

the unit. Consult local building codes and appropriate

national electrical codes (in USA, ANSI/NFPA70,

National Electrical Code (NEC); in Canada, CSA C22.1)

for special requirements.

It is important to recognize safety information. This is the

safety--alert symbol

. When you see this symbol on the

unit and in instructions or manuals, be alert to the

potential for personal injury.

Understand the signal words DANGER, WARNING,

CAUTION, and NOTE. These words are used with the

safety-alert symbol. DANGER identifies the most serious

hazards which will result in severe personal injury or

death. WARNING signifies hazards which could result in

personal injury or death. CAUTION is used to identify

unsafe practices, which may result in minor personal

injury or product and property damage. NOTE is used to

highlight suggestions which will result in enhanced

installation, reliability, or operation.

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause in personal

injury or death.

Before performing service or maintenance operations

on unit, always turn off main power switch to unit and

install lockout tag. Unit may have more than one

power switch.

WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could cause in personal

injury,death and/or equipment damage.

Puron

(R--410A) refrigerant systems operate at

higher pressures than standard R--22 systems. Do not

use R--22 service equipment or components on Puron

refrigerant equipment.

WARNING

PERSONAL INJURY AND ENVIRONMENTAL

HAZARD

Failure to follow this warning could cause in personal

injury or death.

Relieve pressure and recover all refrigerant before

system repair or final unit disposal.

Wear safety glasses and gloves when handling

refrigerants. Keep torches and other ignition sources

away from refrigerants and oils.

WARNING

CUT HAZARD

Failure to follow this caution may result in personal

injury.

Sheet metal parts may have sharp edges or burrs. Use

care and wear appropriate protective clothing, safety

glasses and gloves when handling parts and servicing

569J units.

CAUTION

INSTALLATION GUIDELINE

Replacement/Retrofit – R22 to Puron

Replacement/retrofit installations require change-out of

outdoor unit, metering device, and filter driers.

Change-out of indoor coil (evaporator) and

interconnecting tubing is recommended.

Existing evaporator coil – If the existing evaporator coil

may be re-used, check with the coil manufacturer to verify

the coil construction is suitable for operation with the

higher pressures of Puron

(R-410A). Also determine if

the existing TXV valve is compatible with R-410A,

replace if necessary. The minimum factory test pressure

rating must be 250 psig (1725 kPa). Existing coil will

need to be purged with Nitrogen to remove as much

mineral oil as possible to eliminate cross contamination of

oils.

Acid test – If the existing system is being replaced

because of a compressor electrical failure, assume acid is

in system. If system is being replaced for any other

reason, use an approved acid test kit to determine acid

level. If even low levels of acid are detected, install a 100

percent activated alumina suction-line filter drier in

addition to the replacement liquid-line filter drier.

Remove the suction line filter drier as soon as possible,

with a maximum of 72 hr of operation. Recommendation:

Install a ball valve in the liquid line at the filter drier

location when installing a suction filter in the suction line.

Existing refrigeration piping – Reuse of existing refrigerant

piping involves three issues: quality (strength) of existing

tubing, cleanliness and tube size. Inspect all tube segments

and joints for signs of damage, corrosion or poor brazing.

Flush the interconnecting piping system with dry Nitrogen to

eliminate as much trace of mineral oil as possible.

569J

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Bryant 569J Installation Manual Page 2

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