Envision NSZ Installation Manual Page 3

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NSZ/NDZ INDOOR SPLIT INSTALLATION MANUAL
Table of Contents
Model Nomenclature 4
Physical Characteristics  4
Physical Dimensions  5
General Installation Information  6-9
Physical Data - Envision Air Handler  9
Open Loop - Well Water Systems  10-11
Water Quality 11
Closed Loop - Ground Source Systems 12
Hot Water Generator Connections 13-14
Electrical Data 15
Thermostat Wiring 15
Wiring Schematics16-17
Microprocessor Control 18-21
Operation Logic Data                                                          22
DIP Switch Settings 22
Refrigeration  23-25
Line Set Sizes  25
Pressure/Temperature Conversion Chart for R-410A 26
Thermistor Resistance  27
Operating Parameters27-28
Pressure Drop and Recommended Flow Rates 29
Unit Startup and Troubleshooting  30-32
Preventative Maintenance  33
Replacement Procedures  33
Service Parts List 34
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