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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.
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.
!
WARNING
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.
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.
CAUTION
!
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:
S Armor plate fins and epoxy coated coils
S Complete baked--on paint coverage
(both sides of external sheet metal and grilles)
S Paint 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.