Bryant 189BNV EVOLUTION, Service Manual

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4
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
ELECTRICAL HAZARD -- HIGH VOLTAGE!
Failure to follow this warning could result in personal injury
or death.
Electrical components may hold charge. DO NOT remove
control box cover for 2 minutes after power has been
removed from unit.
PRIOR TO TOUCHING ELECTRICAL COMPONENTS:
Verify zero (0) voltage at inverter connections shown on
inverter cover.
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF position.
There may be more than 1 disconnect switch. Lock out and
tag switch with a suitable warning label.
EXPLOSION HAZARD
Failure to follow this warning could
result in death, serious personal injury,
and/or property damage.
Never use air or gases containing
oxygen for leak testing or operating
refrigerant compressors. Pressurized
mixtures of air or gases containing
oxygen can lead to an explosion.
!
WARNING
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could result in personal
injury or equipment damage.
Puron
r
(R--410A) systems operate at higher pressures than
standard R--22 systems. Do not use R--22 service equipment
or components on Puron
r
equipment. Ensure service
equipment is rated for Puron
r
.
!
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 and gloves when
handling parts.
CAUTION
!
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.
If you do not understand any of the warnings, contact your
product distributor for better interpretation of the warnings.
GENERAL INFORMATION
The 288BNV & 189BNV split system heat pump and air
conditioners features a new outdoor cabinet design that uses a
four--sided coil design to minimize the unit footprint and provide
the best heat exchange taking full advantage of the latest variable
speed technology.
The heart of the system is the variable speed rotary compressor
powered through the use of the variable speed drive (VSD) inverter
control. Through the use of Puron refrigerant, compact ECM
outdoor fan motor, VSD and variable speed scroll compressor,
along with the new outdoor cabinet, the unit achieves a Seasonal
Energy Efficiency Ratio (SEER) of up to 19 and up to 11 Heating
Seasonal Performance Factor (HSPF).
To ensure ultimate comfort, these units should be combined with
either the FE fan coil or Variable Speed Gas furnace controlled
with a two wire communication Evolution
r
Connex
t
Control
SYSTXBBITC01, SYSTXBBITW01 or SYSTXBBITN01 with
version 11 software or newer. Version 12 software or newer
required for model size 13.
This combination will ensure
achievement of comfort with the convenience of fingertip trouble
shooting and diagnostic capability. These units can also use a
standard, 2--stage or single--stage thermostat, for limited
functionality. However, 1--ton models will require the use of an
Evolution Control.