Bryant SYSTXBBECW01 Instruction Manual Page 77
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6.7.2. Pump down
Because this system has an inverter controlled compressor, suction pressure
transducer and EXV, conventional procedure cannot be used to “pump down” and
isolate the refrigerant into the outdoor unit. The control has provisions to assist in
performing this function.
S Select mode to pump down in (COOL or HEAT). COOL mode allows
refrigerant to be isolated in outdoor unit. HEAT mode allows the refrigerant to
be isolated in indoor coil and lineset. Set desired time period.
d Default time period for procedure is 120 minutes.
S Touch START to begin the pump down process. Unit will begin running in
selected mode after a brief delay.
6.7.3. Evacuation
Because this system has an EXV for the heating expansion device, additional steps
must be taken to open the EXV if the heat pump unit must be evacuated for service
reasons. If the EXV is not open when pulling a vacuum or recovering refrigerant
from the heat pump unit, extended evacuation time may be required and/or
inadequate vacuum obtained. The control has provisions to open the EXV for
refrigerant recovery and/or evacuation.
S Set desired time period.
d Default time period for procedure is 120 minutes.
S Touch START on UI to open the valve.
S Begin evacuation or refrigerant recovery as required for the procedure after
control indicates the EXV is open. Power may be removed from heat pump
after the control indicates “READY TO EVACUATE.”
- Installation Instructions 1
- TABLE OF CONTENTS 3
- TABLE OF CONTENTS (cont.) 4
- 1. Safety Considerations 11
- 2. Introduction 11
- 3. Quick Start 12
- 3.1. Set Time and Date 12
- 3.1.2. Setup Time Zone 14
- 3.2. Set Dealer Information 15
- 4.2. Check Equipment 16
- 4. Installation 16
- 4.1. Overview 16
- 4.3. Location 17
- 4.3.1. Wall Control 17
- 4.3.2. Remote Room Sensors 18
- 4.4. Wiring Considerations 19
- 4.4.1. Shielded Wire 22
- 4.5. Mounting 23
- 4.5.1. Decorative Backplate 24
- 4.6. Humidifier Connections 25
- 4.6.1. Bypass Humidifier 25
- 5. Commissioning 26
- 5.7. Filter Type Selection 31
- 5.8. Humidifier Installation 31
- 5.10. Equipment Summary 31
- 6. Service Menu 34
- 6.1. Equipment Summary 35
- 6.2. Installation 35
- 6.3. Set up 36
- 6.3.1. Thermostat 37
- 6.3.1.1. Auto Mode set up 38
- 6.3.1.2. Heat/Cool Deadband 38
- 6.3.1.3. Offsets 38
- 6.3.1.5. Scheduling Enable 39
- 6.3.2. Fan Coil 39
- 6.3.2.1. Airflow 40
- 6.3.2.2. Altitude 41
- 6.3.2.4. Fan Coil G--Terminal 42
- 6.3.3. Furnace 44
- 6.3.3.1. Furnace Airflow 45
- 6.3.3.2. AC/HP Air Flow 45
- 6.3.3.3. Furnace Staging 46
- 6.3.3.5. Furnace Off Delay 47
- 6.3.3.6. Altitude 47
- 6.3.3.8. Furnace G Terminal 48
- 6.3.4. AC/Heat Pump 50
- 6.3.4.1. Latching 50
- 6.3.4.2. Cooling Lockout 51
- 6.3.4.3. Defrost Interval 52
- 6.3.4.4. Low Ambient Cooling 52
- 6.3.4.5. Quiet Shift 52
- 6.3.4.6. AC/Heat Pump RPM Max 53
- 6.3.4.7. Defrost Fan Delay 53
- 6.3.4.8. Brownout Disable 53
- 6.3.4.9 Low Air Multiplier 53
- 6.3.5. Heat Source Lockout 54
- 6.3.7. Zoning (If Applicable) 55
- 6.3.7.1. Zoning Disable 55
- 6.3.7.2. Zone Offsets 56
- 6.3.7.3. Zone Airflow Limits 56
- 6.3.7.4. Duct Assessment Time 56
- 6.3.8. Accessories 57
- 6.3.8.1. Filter 57
- 6.3.8.2. Humidifier 58
- 6.3.8.3. Ultraviolet Lights 58
- 6.3.8.4. Ventilator 58
- 6.3.9. Utility Curtailment 59
- 6.3.10. Hydronic Airflow 59
- 6.4. Check out 60
- 6.4.1. Electric Heat 61
- 6.4.2. Furnace 61
- 6.4.3. Hydronic 62
- 6.4.4. Air Conditioning 62
- 6.4.5. Heat Pump Heating 63
- 6.4.6. Heat Pump Cooling 64
- 6.4.7. Humidifier 64
- 6.4.8. Ventilator 65
- 6.4.9. Zoning (If Applicable) 65
- 6.4.9.1. Airflow Limits 65
- 6.4.9.2. Damper/Sensor Check 65
- 6.4.9.3. Zone Duct Assessment 66
- 6.4.9.4. Sensor Type 66
- 6.5. Service Information 66
- 6.5.1. Advanced Diagnostics 67
- 6.5.2. Fan Coil Status 67
- 6.5.3. Furnace Status 68
- 6.5.4. AC Status 68
- 6.5.5. Heat Pump Status 69
- 6.5.6. Zoning Status 69
- 6.5.7. Last 10 System Events 70
- 6.5.8. Run/Fault History 71
- 6.5.9. Model/Serial Numbers 71
- 6.5.10. Service Phone Number 72
- 6.6.1. Charging 73
- 6.6.2. Pump down 74
- 6.6.3. Evacuation 74
- 6.7.1. Charging 75
- 6.7.2. Pump down 77
- 6.7.3. Evacuation 77
- 6.7.4. EXV Position 78
- 6.8. Dealer Logo 78
- 6.9. Utility Event Setup 79
- 7.0 Wireless Set--up 80
- Connected: 84
- Not Connected: 84
- SSID & Security Key 86
- User Interface 89
- Communicating 89
- AC or HP* 89
- Variable-Speed 89
- Furnace/ Fan Coil 89
- Furnace/Fan Coil 90
- Fan Coil 91
- Humidifier 92
- Connection 92
- (Optional) 92
- 1-Stage AC 93
- 1-Spd. HP 94
- FE Fan Coil or 95
- Variable Speed Furnace 95
- NOTES (Cont.) 98
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