General Information; Final Wiring Check; Step 9 - Compressor Stator Heat; Step 10 - Install Accessories - Bryant Evolution Extreme 191VAN Installation Instructions Manual

191VAN Evolution™ Extreme Variable Speed Air Conditioner: Installation Instructions

General Information

Use No. 18 AWG or larger color-coded, insulated (35°C minimum) wire
for low voltage control wires.
All wiring must be NEC Class 2 and must be separated from incoming
power leads.
Use furnace transformer, fan coil transformer, or accessory transformer
for control power requirement of system accessories external to the OD
unit. The outdoor unit has its own transformer power.
Installations using greater than 200 feet of low voltage wiring should
consult the Evolution™ Connex™ System Control manual for additional
guidelines regarding daisy chaining wiring method and terminating
resistors. Never route control wiring in parallel to high voltage power
wires when possible as electrical noise may transfer and generate
nuisance fault codes. Where low voltage control and high voltage wires
must cross paths, do so at perpendicular angles to eliminate transferred
noise.
If further communication issues exist, consider using shielded low
voltage wires and only connect shielding to C terminal at end nearest
indoor coil.

Final Wiring Check

IMPORTANT: Check factory wiring and field wire connections to
ensure terminations are secured properly. Check wire routing to ensure
wires are not in contact with tubing, sheet metal, etc.
Step 9 – Compressor Stator Heat
This unit has an internal stator heating function that will be energized
during the off cycle. Furnish power to the unit a minimum of 24 hours
before starting the unit for the first time.
The internal stator heating function is intelligently demanded by the
system to prevent the compressor from being the coldest part of the
system and, thus, enhancing the reliability. The stator heat will function
as needed any time the outdoor unit is powered. The indoor unit and
Evolution™ Connex™ System Control do not need to be installed for
the stator heat to operate properly.
Step 10 – Install Accessories
There are no refrigeration circuit or electrical accessories required or
available for installation within the unit. External to the unit, the same
accessories such as the liquid line solenoid, support feet, snow rack,
wind baffle etc., are available on other Bryant units can also be used on
this line of product. Refer to the individual Installation Instructions
packaged with kits or accessories when installing.
WARNING
!
PERSONAL INJURY AND/OR PROPERTY DAMAGE
HAZARD
Failure to follow this warning could result in personal injury and/or
property damage.
For continued performance, reliability, and safety, the only approved
accessories and replacement parts are those specified by the equipment
manufacturer. The use of non-manufacturer approved parts and
accessories could invalidate the equipment limited warranty and result
in fire risk, equipment malfunction, and failure.
Please review the manufacturer's literature and replacement parts
catalogs available from your equipment supplier.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Step 11 – Start-Up & Charging
!
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this caution may result in minor personal injury,
equipment damage or improper operation.
Observe the following:
1. Do not overcharge system with refrigerant.
2. Do not operate unit in a vacuum or at negative pressure.
3. Do not disable low pressure transducer or system safety devices
such as discharge line thermistor or the high pressure switch.
4. Dome temperatures may be hot.
5. Discharge line thermistor is engaged tight on the discharge tube.
!
PERSONAL INJURY HAZARD
Failure to follow this caution may result in personal injury.
Wear safety glasses, protective clothing, and gloves when handling
refrigerant and observe the following:
– Front seating service valves are equipped with Schrader valves.
!
ENVIRONMENTAL HAZARD
Failure to follow this caution may result in environmental damage.
Federal regulations require that you do not vent
refrigerant to the atmosphere. Recover during system
repair or final unit disposal.
!
PERSONAL INJURY HAZARD
Failure to follow this warning could result in personal injury or death.
Do not use power tools to open and close service valves.
Power tools can cause valve stem to suddenly be ejected from the valve
body followed by a high pressure refrigerant leak.
Factory charge amount and desired subcooling are shown in the
Evolution™ Connex™ System Control. To properly check or adjust
charge, conditions must be favorable for subcooling charging in cooling
mode. Favorable conditions exist when the outdoor temperature is
between 65°F (18°C) and 105°F (40.6°C) and the indoor temperature is
between 65°F (18°C) and 80°F (26.7°C). If the temperatures are outside
of these ranges, weigh-in charge only. To confirm system charge level,
you may return to installation site and verify the subcooling when the
temperatures are in the desired range.
Unit is factory charged for 15 ft (4.57 m) of lineset and for the smallest
internal volume AHRI rated indoor coil combinations. If any refrigerant
charge adjustment is required based on the selected indoor coil
combination, lineset dimensions, environment, and outdoor unit coil
material; the Evolution™ Connex™ System Control will calculate and
display the target subcooling and the amount of additional charge to be
added. Therefore the Evolution™ Connex™ System Control is the
source of information for charging the system and is critical to
accurately input system configuration parameters to ensure proper
system operation. Perform a final charge check only when in cooling and
OD is between 65°F (18°C) and 105°F (40.6°C).
Table 2 can be used as a guideline for determining which climate zone to
select during system configuration setup.
8
CAUTION
CAUTION
CAUTION
WARNING