Table of Contents
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INSTALLATION INSTRUCTIONS
FEATURING INDUSTRY STANDARD R-410A REFRIGERANT:
(-)H1P Standard Efficiency with Aluminum Coil
(-)H2T High Efficiency with Aluminum Coil (2-Stage Non-Communicating)
!
WARNING
These instructions are intended as an aid to qualified licensed
service personnel for proper installation, adjustment and
operation of this unit. Read these instructions thoroughly before
attempting installation or operation. Failure to follow these
instructions may result in improper installation, adjustment,
service or maintenance possibly resulting in fire, electrical
shock, property damage, personal injury or death.
AIR HANDLERS
92-20521-127-05
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Table of Contents
Related Manuals for Ruud Endeavor RH2TZ6024STANNJ
Summarization of Contents
Installation Instructions Overview
Air Handler Model Features
Highlights H1P and H2T models featuring R-410A refrigerant.
General Safety Warnings
Electrical Safety and Grounding
Emphasizes disconnecting power, grounding, and qualified personnel for safety.
Ductwork and Environmental Hazards
Warns about duct leaks, pollutants, CO, and connection to heat sources.
Specific Installation Safety Requirements
Covers combustible floor base, service disconnect, and panel security.
Product Specific Warnings and Precautions
Proposition 65 and Chemical Warnings
Alerts about fiberglass insulation and chemical content.
Filter and Ductwork Requirements
Stresses filter use and plenum/ductwork construction standards.
Installation in Unconditioned Spaces
Addresses potential sweating and the need for auxiliary drain pans.
General Product Information
Efficiency and Indoor Air Quality
Importance of duct system balance for efficiency and air quality.
Model and Product Verification
Checking Received Product
Inspecting unit for transit damage and verifying specifications.
Model Number Nomenclature Explained
Decodes the structure and meaning of model numbers.
Available Model Configurations
List of Available H1P and H2T Models
Provides model numbers for 115V and 208/240V units.
Physical Dimensions and Weights
H1P Model Dimensions and Weights
Detailed dimensions and weight data for H1P models.
Installation Fundamentals
Indoor/Outdoor Unit Matching Importance
Selecting matched units for optimal performance and warranty validity.
Quality Installation Practices
Criticality of adhering to codes and manuals for a quality installation.
Tools and Refrigerant for R-410A
Essential tools and specifications for servicing R-410A systems.
R-410A System Specifications and Applications
R-410A Specifications and Handling
Physical properties, pressure, and handling guidelines for R-410A.
Unit Applications and Orientation
Covers unit installation orientations and configurations.
Vertical Upflow & Horizontal Left Discharge
Factory configuration and installation notes for this orientation.
Special Installation Environments
Vertical Downflow & Horizontal Right Discharge Conversion
Procedures for converting the unit for downflow or right discharge.
Installation in Unconditioned Spaces
Addressing sweating and sealing for unconditioned spaces.
Combustible Floor Base Requirements
Mandatory base for downflow on combustible floors.
Installation Considerations and Accessories
Installation in Mobile/Manufactured Homes
Specific securing methods for mobile and manufactured homes.
Corrosive Environment Installation
Protecting the unit from corrosive atmospheres.
Horizontal Application Support
Proper support methods for horizontal installations.
Auxiliary Overflow Pan Requirements
Necessity of overflow pans for specific installation areas.
Clearances and Ductwork Preparation
Required Clearances for Operation and Service
Minimum clearances needed for unit access and airflow.
Duct Flange Installation Procedure
Steps for field installation of duct flanges.
Ductwork Installation Guidelines
Ductwork Installation and Safety Warnings
Compliance with codes and warnings against connecting to heat sources.
Refrigerant System Connections
Return Air Filter Requirements
Importance of external filters and proper sizing for airflow.
Refrigerant Line Preparation and Brazing
Steps for preparing lines, brazing, and leak testing.
Refrigerant System Procedures
Liquid Line Filter Drier and TXV Bulb Attachment
Installing filter drier and correctly positioning TXV sensing bulb.
System Evacuation, Charging, and TXV Bulb
Evacuating, charging, and attaching TXV sensing bulb for proper operation.
Condensate Drain Installation
Proper routing, pitching, and testing of condensate drain lines.
Thermostat and Electrical Wiring
Thermostat Installation and Settings
Recommended thermostat location and configuration for optimal control.
Electrical Wiring and Grounding
Guidelines for wiring, grounding, and configuring for 208V.
Power Wiring and Wire Sizing
Power Wiring and Circuit Protection
Connecting power supply, branch circuits, and selecting protective devices.
Copper Wire Size Selection (3% Voltage Drop)
Tables for selecting wire gauge based on length and ampacity.
Electrical Data: Blower Motors
H1P Blower Motor Electrical Data
Electrical specs for H1P PSC motors, including HP, RPM, amps, and protection.
H2T Blower Motor Electrical Data
Electrical specs for H2T ECM motors, including HP, RPM, amps, and protection.
Electrical Data: Heater Kits
H1P Electric Heater Kit Electrical Data
Electrical ratings for H1P models with various electric heater kits.
H1P Electric Heater Kit Electrical Data (Continued)
Continued electrical ratings for H1P models with heater kits.
H2T Electric Heater Kit Electrical Data
Electrical ratings for H2T models with various electric heater kits.
H2T Electric Heater Kit Electrical Data (Continued)
Continued electrical ratings for H2T models with heater kits.
H2T Electric Heater Kit Electrical Data (Continued)
Continued electrical ratings for H2T models with heater kits.
Electric Heater Kit Supplemental Information
Supplemental Heater Kit Information
Details on circuit breaker sizing and usage for heater kits.
Control Wiring and Diagrams
Control Wiring Guidelines
Best practices for low-voltage control wiring separation and sizing.
Thermostat and Control Wiring Diagrams
Generic diagrams for connecting thermostats and controls to H1P/H2T units.
Airflow Performance and Limits
General Airflow Operating Limits
Tables showing operational CFM ranges for different models and conditions.
Blower Motor Speed Selection
Selecting Indoor Blower Motor Speed (-H1P PSC)
Guidance on selecting PSC motor speeds based on static pressure.
Selecting Indoor Blower Motor Speed (-H2T ECM 2-Stage)
How to select speed taps for H2T ECM motors in 2-stage applications.
Selecting Indoor Blower Motor Speed (-H2T ECM Single-Stage)
How to select speed taps for H2T ECM motors in single-stage applications.
Airflow Performance Data: H1P Models
240V Airflow Performance Data (-H1P PSC)
Airflow performance tables for 240V H1P models with PSC motors.
115/208V Airflow Performance Data (-H1P PSC)
Airflow performance tables for 115/208V H1P models with PSC motors.
Airflow Performance Data: H2T Models
115/208/240V Airflow Performance Data (-H2T Constant Torque)
Airflow data for H2T models with constant torque ECM motors.
115/208/240V Airflow Performance Data (-H2T Constant Torque) - Continued
Continued airflow data for H2T models with constant torque ECM motors.
115/208/240V Airflow Performance Data (-H2T Constant Torque) - Continued
Continued airflow data for H2T models with constant torque ECM motors.
115/208/240V Airflow Performance Data (-H2T Constant Torque) - Continued
Continued airflow data for H2T models with constant torque ECM motors.
Start-Up and Operational Checks
Pre-Start Checklist
Essential checks before energizing the unit.
System Startup and Operational Checkout
Procedures for initial system activation and verification.
Cooling Mode Sequence of Operation
How the system operates during a cooling call.
System Operation Modes
Electric Heat Mode Sequence of Operation
System operation during electric heating cycles.
Heat Pump Heating Mode Sequence of Operation
System operation during heat pump heating cycles.
Supplemental and Emergency Heat Operation
Functionality of supplemental heat during defrost and emergency heat.
Thermostat Fan Setting
Proper fan setting for automatic or continuous operation.
Performance Calculations and Airflow Measurement
Correcting Electric Heat kW for Voltage
Adjusting heat output based on actual supply voltage.
Calculating Electric Heat Capacity in BTUH
Formula to convert kW to BTUH for heating capacity.
Estimating CFM Using External Static Pressure
Method for estimating airflow by measuring static pressure.
Component Controls and Capacitors
Estimating CFM Using Electric Heat Temperature Rise
Method for estimating airflow using temperature rise across electric heat.
Checking Refrigerant Charge
Procedure for verifying correct refrigerant charge after airflow confirmation.
Blower Motor Types and Operation
Details on PSC and ECM blower motors, including speed taps.
Accessories, Kits, and Coil Assembly
Motor Run Capacitor Requirements
Information on PSC motor run capacitors and their replacement.
Blower Control Operation
Functionality of blower controls for H1P and H2T models.
Blower Assembly Details and Transformer
Description of blower assembly, housing, and control transformer.
Indoor Coil Assembly Specifications
Features of the indoor coil, including TXV and condensate management.
Electric Resistance Heater Kits
Availability, types, and installation information for electric heater kits.
Optional Accessories and Bases
Jumper Bar Kits and Overflow Pans
Kits for circuit conversion and models of auxiliary overflow pans.
External Filter Bases and Floor Bases
Options for external filter bases and combustible floor bases.
Maintenance Procedures
Horizontal Adapter Kit Information
Kits for converting RCH coils for horizontal applications.
General Maintenance Schedule
Importance of periodic maintenance and safety precautions.
Air Filter Inspection and Replacement
Guidelines for checking and replacing the air filter.
Coil, Drain Pan, and Drain Line Cleaning
Annual inspection and cleaning procedures for coils and drains.
Blower Motor and Assembly Servicing
Blower Motor and Wheel Cleaning
Methods for cleaning blower motor and wheel.
Motor Lubrication and Assembly Removal
Information on motor lubrication and blower assembly removal safety.
Motor Replacement Procedure
Step-by-step instructions for replacing the blower motor.
Troubleshooting Common Issues
Diagnostic Guide for Common Problems
Lists common problems and their suggested causes and fixes.
Wiring Diagrams: H1P Models
H1P - 115V Wiring Diagram
Schematic for 115V H1P models, showing connections.
H1P - 208/240V Wiring Diagram
Schematic for 208/240V H1P models, showing connections.
Wiring Diagrams: H2T Models
H2T - 115V Wiring Diagram
Schematic for 115V H2T models, showing connections.
H2T - 230V Wiring Diagram
Schematic for 230V H2T models, showing connections.
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