Page 2 - INSTALLATION; WARNING
INSTALLATION INSTRUCTIONS R- 410A Split System Air Conditioner 2 421 01 1702 05 Specifications subject to change without notice. Figure 1 Connecting Tube Installation INSULATION VAPOR TUBE LIQUID TUBE OUTDOOR WALL INDOOR WALL LIQUID TUBE VAPOR TUBE INSULATION CAULK Avoid contact between tubing and s...
Page 3 - UNIT DAMAGE HAZARD; CAUTION; UNIT DAMAGE HAZARD
INSTALLATION INSTRUCTIONS R- 410A Split System Air Conditioner 421 01 1702 05 3 Specifications subject to change without notice. CAUTION ! UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation.Do not leave system open to atmosphere any longer than min...
Page 4 - MI
INSTALLATION INSTRUCTIONS R- 410A Split System Air Conditioner 4 421 01 1702 05 Specifications subject to change without notice. Sweat Connection CAUTION ! UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation.Service valves must be wrapped in a heat-...
Page 6 - UNIT OPERATION AND SAFETY HAZARD; PERSONAL INJURY HAZARD; ENVIRONMENTAL HAZARD; Check Charge; NOTE
INSTALLATION INSTRUCTIONS R- 410A Split System Air Conditioner 6 421 01 1702 05 Specifications subject to change without notice. Airflow Setup with Non-Communicating Furnace or Fan Coil Two- stage compressor operation requires two different indoor airflow settings for proper operation. This outdoor ...
Page 8 - The model plug takes priority over factory model information; Pressure Switch Protection; De-energize the appropriate compressor contactor.; Control Fault; Brown Out Protection; 30 V Brown Out Protection Defeated:; Status code 6 shows the brownout is disabled.; Compressor Voltage Sensing
INSTALLATION INSTRUCTIONS R- 410A Split System Air Conditioner 8 421 01 1702 05 Specifications subject to change without notice. NOTE : The model plug takes priority over factory model information input at the factory. If the model plug is removed after initial powerup, the unit will operate accordi...
Page 9 - IMPORTANT
INSTALLATION INSTRUCTIONS R- 410A Split System Air Conditioner 421 01 1702 05 9 Specifications subject to change without notice. Unloader Test Procedure The unloader is the compressor internal mechanism, controlled by the DC solenoid, that modulates between high and low stage. If it is suspected tha...
Page 10 - Table 6 - Status Codes
INSTALLATION INSTRUCTIONS R- 410A Split System Air Conditioner 10 421 01 1702 05 Specifications subject to change without notice. Table 6 - Status Codes OPERATION FAULT AMBER LED FLASH CODE Possible Cause and Action Standby – no call for unit operation None On solid, no flash Normal operation Low St...
Page 11 - Figure 9; THERMISTOR CURVE; Two - Stage Control Board
INSTALLATION INSTRUCTIONS R- 410A Split System Air Conditioner 421 01 1702 05 11 Specifications subject to change without notice. Figure 9 Resistance vs Temperature Chart 0 10 20 30 40 50 60 70 80 90 0 (-17.77) 20 (-6.67) 40 (4.44) 60 (15.56) 80 (26.67) 100 (37.78) 120 (48.89) TEMPERATURE °F (°C) RE...
Page 12 - HUM; FVM Fan Coil Wiring With
INSTALLATION INSTRUCTIONS R- 410A Split System Air Conditioner 12 421 01 1702 05 Specifications subject to change without notice. Figure 11 Observer Communicating Wall Control Four- Wire Connection Wiring Diagrams (See Thermostat Installation Instructions for specific unit combinations) S1 S2 R C DX...
Page 13 - Non - Communicating Indoor Unit with; Final Checks
INSTALLATION INSTRUCTIONS R- 410A Split System Air Conditioner 421 01 1702 05 13 Specifications subject to change without notice. Figure 14 Non - Communicating Indoor Unit with Observer Communicating Wall Control NAXA00101DB Green Yellow White Red OAT Sensor Communicating Outdoor W2 C Y1 C R Wall Co...
Page 14 - R- 410A QUICK REFERENCE GUIDE; WARNINGS
INSTALLATION INSTRUCTIONS R- 410A Split System Air Conditioner 14 421 01 1702 05 Specifications subject to change without notice. R- 410A QUICK REFERENCE GUIDE R- 410A refrigerant operates at 50% - 70% higher pressures than R- 22. Be sure that servicing equipment and replacement components are des...