Table of Contents
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Table of Contents
Troubleshooting
Related Manuals for WaterFurnace NDZ
Summarization of Contents
Installation Information
Installation Information
Details on initial setup and system requirements.
Water Piping Connections
Guidelines for connecting water lines to the unit.
Electrical
Information on electrical connections and requirements.
Startup Procedures
Steps for initiating unit operation.
Physical Characteristics
Model Nomenclature
Explanation of unit model naming conventions.
Physical Dimensions
Detailed measurements and dimensions of the unit.
General Installation Information
Safety Considerations
Crucial safety warnings and precautions for installation.
Unit Location
Recommendations for choosing an optimal installation site.
Duct System
Requirements for air duct installation and integration.
Connection to Air Coil
Procedures for connecting refrigerant lines to the air coil.
Water Piping
Open Loop - Well Water Systems
Installation details for open loop water systems.
Water Quality
Water quality considerations and recommendations for system longevity.
Closed Loop - Ground Source Systems
Multiple Units on One Flow Center
Configuration for multiple units sharing a single loop pump system.
Hot Water Generator Connections
Water Tank Preparation
Steps for preparing the water heater tank for connection.
Plumbing Installation
Detailed steps for plumbing the hot water generator.
Electrical Data
Electrical Data
Technical specifications for electrical power requirements and circuit sizing.
Wiring Schematics
Dual Capacity Split Wiring Schematic
Wiring diagram for dual capacity split units.
Single Speed Split Wiring Schematic
Wiring diagram for single speed split units.
Microprocessor Control
Startup
Initial startup sequence and delays for unit operation.
Safety Controls
Overview of safety mechanisms and lockout conditions.
Lockout Conditions
Explanation of various lockout modes and their causes.
Compressor Monitoring/Comfort Alert
System for monitoring compressor performance and alerts.
Operation Logic Data
Operation Logic Data
Table detailing unit operation logic for different modes.
DIP Switch Settings
DIP Switch Settings
Guide to configuring unit operation via DIP switches.
Refrigeration
Leak Testing
Steps for testing refrigerant lines for leaks.
System Evacuation
Process for removing moisture and air from the refrigerant system.
Charging the System
Procedure for adding and verifying refrigerant charge.
Line Set Sizes
Table of recommended line set sizes and lengths.
Pressure/Temperature Conversion Chart for R-410A
Pressure/Temperature Conversion Chart for R-410A
Table for converting R-410A pressure to temperature.
Operating Parameters
Single Speed Models - NSZO22 thru NSZ070
Operating parameters for single speed models with NAH Air Handler.
First Stage Operation
Operating parameters for first stage cooling and heating.
Pressure Drop and Recommended Flow Rates
Pressure Drop and Recommended Flow Rates
Tables for pressure drop and flow rates based on model and temperature.
Unit Startup
Before Powering Unit, Check The Following
Pre-startup checklist for safe and proper operation.
Startup Steps
Step-by-step guide for initiating unit startup.
Final Evaluation
Post-startup checks and adjustments for performance.
Unit Startup/Troubleshooting
Heating Cycle Analysis
Guide for analyzing unit performance during heating cycles.
Cooling Cycle Analysis
Guide for analyzing unit performance during cooling cycles.
Troubleshooting
Standard Microprocessor Controls
Methods for troubleshooting the control board.
LED Definitions and Diagnostics
Explains LED indicators for fault diagnosis.
Refrigerant Systems
Guidelines for diagnosing refrigerant system issues.
Preventative Maintenance
Water Coil Maintenance
Procedures for cleaning and maintaining water coils.
Other Maintenance
General maintenance tasks including filters and blower motors.
Condensate Drain
Maintenance for the condensate drain system.
Replacement Procedures
Obtaining Parts
How to order replacement parts for the unit.
Service Parts List
Service Parts List
Comprehensive list of available replacement parts for the unit.
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