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 Schematics16-17
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 Parameters27-28
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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