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Rheem Raypak 4450 User Manual

Rheem Raypak 4450
54 pages
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E󰀨ective: 11-20-20
Replaces: Catalog# 6000.56
P/N 241909 Rev. 1
Heat Pump Pool &
Spa Heater
Models 2450, 3450, 4450,
5450, 6450, 6450PD, 6450HC,
8450 & 8450HC
FOR YOUR SAFETY: Do not store or use gasoline or other ammable vapors and
liquids or other combustible materials in the vicinity of this or any other appliance.
To do so may result in an explosion or re.
NOTE: The instructions in this manual are for the use of qualied individuals specially trained and experienced
in the installation and maintenance of this type of equipment and related system components. Installation and
service personnel are required by some states to be licensed. Persons not qualied shall not attempt to install,
service, or maintain this equipment.
This manual should be maintained in legible condition and kept adjacent to the heat pump pool heater or in a
safe place for future use.
INSTALLATION AND
OPERATION MANUAL

Table of Contents

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Rheem Raypak 4450 Specifications

General IconGeneral
BrandRheem
ModelRaypak 4450
CategoryHeat Pump
LanguageEnglish

Summary

General Safety Warnings

Understanding Safety Symbols

Explains the meaning of DANGER, WARNING, and CAUTION symbols.

Water Temperature and Chemical Safety

Guidelines for safe spa water temperatures and chemical handling.

Refrigerant and Testing Information

Notes on R-410A refrigerant and efficiency testing procedures.

Introduction to the Heat Pump Heater

Unit Overview and Operation

Describes the heat pump's design, efficiency, and operation.

Product Registration and Warranty

Instructions and importance of registering the unit for warranty.

Water Chemistry Guidelines

Maintaining Balanced Water

Importance of balanced water for health and equipment protection.

Recommended Water Chemistry Levels

Table detailing recommended pH, alkalinity, hardness, and chlorine levels.

Installation Considerations

Unit Placement and Clearances

Guidelines for safe placement, air intake, and service access.

Base Requirements and Support

Specifies level base needs and avoiding standing water.

Environmental Protection Measures

Instructions for freeze protection, rain runoff, and wind resistance.

Hurricane Tie-Down Instructions

Details on securing the unit for high wind conditions using tie-down clips.

Electrical Connections and Requirements

Wiring Standards and Safety

Compliance with NEC, flexible conduit, disconnect means, and grounding.

Electrical Power Specifications

Table detailing model electrical power requirements and wire sizing.

Water Connections and Flow

Inlet/Outlet and Chemical Feeder Installation

Proper connection of inlet/outlet and precautions for chemical feeders.

Shutoff Valves and Bypass Requirements

Necessity of shutoff/diverter valves for flow control and service.

Pressure Drop Specifications

Understanding Pressure Drop

Information on pressure drop across the heater for various flow rates.

Heater Control Display and Interface

Control Buttons and Navigation

Explanation of MENU/SET, UP, and DOWN buttons for operation.

Display Features and Operation

Details on the LCD display, backlight, and information shown.

User Operating Modes

Heat Only and Power Defrost Modes

Explains modes like Pool Heat, Spa, and Timed Spa for specific models.

Heat/Cool Mode Selections

Details Pool Heat, Pool Cool, Pool Auto, and Timed Spa modes for Heat/Cool models.

Remote and Installer/Service Access

How to access Remote mode and the Installer/Service menu.

Control Menu Navigation

Accessing the User Menu

Procedure to access and use the User Menu for settings.

Accessing the Installer/Service Menu

Method to enter the Installer/Service menu for advanced settings.

User Menu Settings

Basic User Settings

Setting current time, C/F display, Spa/Pool Max Temps.

Pump Period Configuration

Setting pump on/off times, speeds, and valve positions.

Installer/Service Menu Configuration

Pump and Valve Control Setup

Configuring pump operation modes and 3-way valve positions.

System Diagnostics and Faults

Accessing fault history, run hours, and clearing faults.

Sensor Data and Temperature Settings

Viewing sensor data (Coil, Amb, Suct, Water) and setting temperatures.

Advanced Operational Settings

Configuring defrost, lockout, EXV, and brownout detection.

Model Type and Factory Defaults

Setting model type and resetting control to factory defaults.

Control Settings and Configuration

Time and Temperature Settings

Setting current time, C/F display, and maximum spa/pool temperatures.

Pump Period Scheduling

Configuring pump operation periods, speeds, and valve positions.

Temperature Control and Features

Temperature Demand Activation

How heat demand is triggered based on water temperature and setpoint.

Pump Control and Lockouts

Pump operation, low ambient lockout, and control lock box features.

Auxiliary Modes and Remote Operation

Configuring AUX outputs (OFF, OUTPUT, REMOTE, EXT HEAT) and remote control.

Operational Modes and Monitoring

Specific Operating Modes

Details on Pool Heat, Pool Cool, Pool Auto, and Timed Spa modes.

Performance Monitoring and Delays

Accessing fault history, run hours/cycles, and understanding start delay.

Unit Operations and Safety Limits

Defrost Operation Modes

Explains defrost cycles for different unit configurations.

3-Way Valve Control and Battery

Operation of 3-way valves and battery backup for control settings.

High Water Temperature Safety

How the high water temperature limit functions and resets.

System Protection and Operation Sequence

Pressure Switch Lockouts

Explains high and low pressure switch lockouts and their resets.

Water Pressure Switch Function

Role of the water pressure switch in preventing operation.

System Startup and Operation Sequence

Step-by-step overview of initial power-up and operational states.

Digital Controls Operation and Start-Up

Operating Digital Controls

How to adjust water temperature and select C/F units.

Heat/Cool Operation and Start-Up

Information on heat/cool functionality and initial system start-up.

Seasonal Maintenance Procedures

Steps for seasonal start-up and annual checks.

Shutdown, Protection, and Maintenance

Seasonal Shutdown and Freeze Protection

Procedures for summer shutdown and freeze protection via drain-down.

Continuous Pump Operation for Freeze

Alternative method for freeze protection using continuous pump operation.

Routine Maintenance Procedures

Guidelines for air coil cleaning, cabinet care, and drain hole maintenance.

Troubleshooting Common Issues

Unit Running but Not Heating

Checks for adequate water flow, air temperature differential, and airflow.

Unit Not Running or Starting

Troubleshooting power supply, settings, and time delays.

Excessive Condensation Issues

Identifying and addressing potential leaks versus normal condensation.

Operational Status Messages

Understanding Status Messages

Explains common messages like Comp Start Delay, Valve Chng Delay, WPS Closed, Defrost, etc.

Error Messages and Solutions

Sensor and Switch Error Codes

Explains errors like Amb Sensor Fail, Coil Sensor Fail, Hi Press Trip, Lo Press Trip.

Control Faults and Power Issues

Details errors related to ROM/RAM failure, software, brownout, and time of day clock.

Service Call Preparation

Information Needed for Service

Details required for warranty service calls and basic troubleshooting checks.

Accessing the Control Panel

Step-by-step instructions for accessing internal components by removing the control panel.

Resetting to Factory Defaults

Procedure to reset the control to factory default settings.

Plumbing Diagrams

No External Bypass Schematic

Diagram showing plumbing for systems without an external bypass valve.

Plumbing Diagrams with Bypass

External Bypass Schematic

Diagram illustrating plumbing setup with an external bypass valve.

General Piping Recommendations

System Piping Diagram

Diagram for integrating heat pump with solar or gas backup systems.

Piping Notes and Key

Important notes on pipe sizing, check valves, and system integration.

Multiple Heater Piping

Multi-Heater System Design

Schematic for connecting multiple heat pumps with primary/secondary loops.

Pipe Sizing for Multiple Units

Chart detailing minimum pipe sizes for various configurations of multiple heaters.

Wiring Diagram

Digital Model Wiring Schematic

Detailed wiring diagram for 208/230V single-phase digital models.

Wiring Legend and Notes

Explanation of symbols, wire colors, and specific wiring notes.

Remote Control Device Installation

Heater 2-Wire Controller Setup

Instructions for connecting and configuring 2-wire controllers for heat-only models.

2-Wire Controllers for 'Chill' Mode

Setup for 2-wire controllers on heat/cool models for cooling functions.

3-Wire Controller Setup

Instructions for connecting and configuring 3-wire controllers for heat/cool operation.

Resistance Sensor Values

10K Sensor Resistance Data

Resistance values for ambient and coil temperature sensors at various temperatures.

100K Sensor Resistance Data

Resistance values for water temperature sensors at various temperatures.

Illustrated Parts List

Parts for Models 2450-4450

Visual breakdown and part numbers for smaller models.

Parts for Models 5450-8450

Visual breakdown and part numbers for larger models.

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