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288BNV EVOLUTION
VARIABLE SPEED HEAT PUMP
WITH PURONr REFRIGERANT
NOTE: Read the entire instruction manual before starting the installation.
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Installation Instructions
TABLE OF CONTENTS
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Summary of Contents for Bryant EVOLUTION V 288BNV
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Page 1: Table Of Contents
288BNV EVOLUTION VARIABLE SPEED HEAT PUMP WITH PURONr REFRIGERANT Installation Instructions NOTE: Read the entire instruction manual before starting the installation. TABLE OF CONTENTS PAGE NO. SAFETY CONSIDERATIONS ..............INSTALLATION RECOMMENDATIONS . -
Page 2: Safety Considerations
IMPORTANT: Effective January 1, 2015, all split system and Indoor Thermostat Control Options packaged air conditioners must be installed pursuant to applicable Evolution Connex Standard Model Control HP Thermostat regional efficiency standards issued by the Department of Energy. Information in these installation instructions pertains only to 288B 288B Yes* Yes**... -
Page 3: Installation
INSTALLATION 7. Avoid direct tubing contact with water pipes, duct work, floor joists, wall studs, floors, and walls. Specifications for this unit in residential new construction market 8. Do not suspend refrigerant tubing from joists and studs with require the outdoor unit, indoor unit (including metering device), a rigid wire or strap which comes in direct contact with tub- refrigerant tubing sets, and filter drier listed in pre- -sale literature. -
Page 4: Step 4 - Operating Ambient
Step 4 — Operating Ambient CAUTION The minimum outdoor operating ambient in cooling mode is 40_F (4.4_C) with Evolution Connex Control, 55_F (12.8_C) with UNIT DAMAGE HAZARD non- -communicating systems. The maximum outdoor operating Failure to follow this caution may result in equipment ambient in cooling mode is 115_F (46.1_C). - Page 5 Outdoor Unit Connected to Factory- - Approved Indoor Sweat Connections Unit CAUTION Outdoor unit contains correct system refrigerant charge for operation with factory- -approved, AHRI- -rated indoor units when connected by 15 ft. (4.57 m) of field- -supplied or factory- -accessory UNIT DAMAGE HAZARD tubing, and factory- -supplied filter drier.
- Page 6 Step 7 — Make Electrical Connections Connect Evolution Control Wiring Connect to Evolution connections. Only two wires (AB) or WARNING (GN,YL) to Evolution capable indoor unit (furnace or fan coil) are required. Connecting C (WT) is recommended if wires are available (see Fig.
- Page 7 Thermidistat Furnace Heat Pump RVS Cooling O/B W2 Heat Stage 3 W/W1 W/W1 (furnace) Jumper Wire Heat/Cool Stage 1 Y1 / W2 Required for Single-Stage Heat/Cool Stage 2 Y/Y2 Y/Y2 24VAC Hot Heating 24VAC Hot Cooling J1 Jumper on Control Board Dry Contact 1 DHUM Dry Contact 2...
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Page 8: Step 8 - Compressor Internal Crankcase Heater
Bryant units, can also be used on this line of Upon initial start- -up of unit, status code 68 will be generated and product. For models utilizing 23 inch x 23 inch base pans, it is system will operate at stage 2 for 11 minutes. - Page 9 Follow these steps to properly start up the system: 1. After system is evacuated, close the disconnects to energize indoor unit, outdoor unit, and User Interface (UI). Do not attempt to operate the system in heating or cooling mode at this time.
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Page 10: Step 11 - System Functions And Sequence Of Operation
Step 11 — System Functions and Sequence of When the compressor stops, a 3.5 minute Time Guard period is activated which is followed by opening of the PEV valve for 150 Operation seconds to equalize the refrigerant pressure difference between the 288BNV models utilize... -
Page 11: Step 12 - Check Charge
Defrost Step 12 — Check Charge Charge in CHARGING mode (communicating only) This user interface (UI) offers 5 possible defrost interval times: 30, 60 and 90 minutes, or AUTO. The default is AUTO. Unit is factory charged for 15ft (4.57 m) of lineset. If any refrigerant charge adjustment is required due to the user inputted Defrost interval times: 30, 60, and 90 minutes or AUTO are line set length or indoor coil, the UI will calculate and display the... - Page 12 A14575 Fig. 18 - - Stabilization Time Fig. 19 - - Charging in Cooling Mode 288BNV013 Charging Non- - Communicating Systems Charging Procedure: Force system to operate in high stage cooling by creating a large differential between room temperature and set point on thermostat. Use multi- -meter to verify that 24 VAC is present between C, Y1 /Y2 terminals at outdoor unit.
- Page 13 Heating Check Chart Procedure (See Fig.28 - - 31) (Communicating / Non- - communicating Systems) In heating mode, the required charging method is by weigh- -in. On new installations or complete recharge, refer to the unit 0 and indoor fan coil / furnace coil per Table 3 for additional charge needed.
- Page 14 Fig. 26 - - Heating Pressure Check Chart 288BNV013 Fig. 30 - - Heating Pressure Check Chart 288BNV037 Fig. 27 - - Heating Pressure Check Chart 288BNV024 Fig. 31 - - Heating Pressure Check Chart 288BNV048 Fig. 32 - - Heating Pressure Check Chart 288BNV060 Fig.
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Page 15: Step 13 - Pumpdown & Evacuation
Step 13 — Pumpdown & Evacuation 4. The unit will continue to run until high or low pressure CAUTION switches open. Close vapor service valve once compressor shuts down. ENVIRONMENTAL HAZARD 5. Remove power from indoor and heat pump unit prior to servicing unit. -
Page 16: Major Components
MAJOR COMPONENTS Variable Speed Compressor This unit contains a variable speed rotary compressor that has a Variable speed Control Board wide operating range. It operates on a variable 3 phase sine wave provided by the inverter. This compressor can only be operated by the specific inverter supplied with the unit. -
Page 17: Troubleshooting
TROUBLESHOOTING To use a service tool, connect the A and B communication bus wires from this second communicating control to the terminals Systems Communication Failure marked A and B on the terminal strip located in the bottom left corner of the AOC board (see Fig. 34). But instead of connecting If communication is lost with the User Interface (UI), the green the wires on the service tool to the terminals marked C and D, LED will be off. - Page 18 Temperature Thermistors S In heating if the outdoor air sensor indicates 35_F ( 19.4_C) warmer than the coil sensor (or) the outdoor air sensor indicates Thermistors are electronic devices which sense temperature. As the 10_F ( 5.6_C) cooler than the coil sensor, the sensors are out temperature increases, the resistance decreases.
- Page 19 Suction Thermistor (OST) Variable Speed Compressor Winding Resistance Suction Thermistor is used for assisting in EXV control and must This compressor operates with 3- -phase variable frequency PWM be secured on the suction tube and aligned longitudinally to the variable voltage. For troubleshooting certain fault codes related to vertical surface of the tube axis (see Fig.
- Page 20 Status Codes Status Code Recall Mode ATTENTION Active status codes are stored in memory even when power is absent. The most recent flashing status code (highest priority Unit may occasionally become unresponsive due to certain active) can be recalled from memory via Status Code Recall Mode combinations of previous fault codes.
- Page 21 Table 7 – Troubleshooting...
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Page 22: Final Checks
S All indoor coils must be installed with a hard- -shutoff Puron refrigerant TXV metering device. Catalog No. II288B---08 E2017 Bryant Heating & Cooling Systems D 7310 W. Morris St. D Indianapolis, IN 46231 Edition Date: 10/17 Replaces: II288B--- 07...
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