WaterFurnace NSZ - User Manual

Installation Information
Water Piping Connections
Hot Water Generation Connections
Electrical
Startup Procedures
Troubleshooting
Preventive Maintenance
IM1003SN 05/10
NSZ/NDZ Installation Manual
Geothermal/Water Source Indoor Split Heat Pump
2 to 6 Tons Single Speed
2 to 6 Tons Dual Capacity

Summary

Product Identification and Specifications

Model Nomenclature and Physical Data

Defines model naming conventions and provides detailed physical characteristics and dimensions.

Installation and System Configuration

General Installation and Safety Guidelines

Covers essential safety precautions, unit location, and site preparation.

Ducting, Air Handler, Water Piping, and Water Sources

Details duct system, air handler integration, water piping, and open/closed loop water systems.

Dual Fuel and Hot Water Generator Setup

Details for dual fuel systems and hot water generator plumbing and startup.

Electrical, Control, and Refrigerant Systems

Electrical Data and Wiring Diagrams

Provides electrical specifications, thermostat wiring, and unit wiring schematics.

Microprocessor Control and Operation Logic

Explains control board functions, operational logic, DIP switches, and safety features.

Refrigeration System Management

Covers refrigerant piping, charging, leak testing, and performance parameters.

Startup, Troubleshooting, and Maintenance

Unit Startup and Performance Verification

Step-by-step guide for unit startup, initial checks, and performance verification.

Troubleshooting and Diagnostics

Methods for diagnosing and resolving operational issues using unit indicators and controls.

Preventative Maintenance and Parts

Outlines routine maintenance, cleaning, and procedures for obtaining replacement parts.

WaterFurnace NSZ Specifications

General

Model	NSZ
Category	Heat Pump
Refrigerant	R-410A
Heating Efficiency (COP)	Up to 5.1
Cooling Efficiency (EER)	Up to 30
Warranty	10 years