Raypak 503-2003 User Manual

CATALOG NO. 3400.53A
Effective: 8-1-06
Replaces: 6-15-06
P/N 241288 Rev 2
INSTALLATION
AND OPERATING
INSTRUCTIONS
Models 503-2003
Types H & WH
FOR YOUR SAFETY
Do not store or use gasoline or other flammable 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 fire.
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury,
exposure to hazardous materials* or loss of life. Review the information in this manual carefully. Installation and
service must be performed by a qualified installer, service agency or the gas supplier.
* This unit contains materials that have been identified as carcinogenic, or possibly carcinogenic, to humans.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
This manual should be maintained in legible condition and kept adjacent to the heater or in a safe place for future
reference.

Raypak 503-2003 Specifications

General

Brand	Raypak
Model	503-2003
Category	Boiler
Language	English

Summary

WARNINGS

Hazard Term Definitions

Defines DANGER, WARNING, CAUTION, and NOTICE terms used in the manual.

Critical Safety Alerts

Covers essential warnings regarding gas, water damage, electrical shock, and hazardous materials.

SECTION B Hot Water Supply General Safety

Hot Water Safety Hazards

Discusses dangers of high water temperatures and scalds, recommending safe settings.

Scald Injury Time/Temperature Data

Details the relationship between water temperature and time to produce serious burns.

SECTION C Installation

Installation Codes and Regulations

Lists codes and regulations that must be followed for installation.

Vent and Air Inlet Terminations

Details minimum clearances for vent and air inlet terminations from building features.

Combustion and Ventilation Air

Covers requirements for providing adequate and clean air for combustion.

Water Piping and Testing

Cold Water Operation Considerations

Gas Supply and Connections

Electrical Power Connections

Venting System Requirements

Vent Terminal Location and Configuration

Horizontal and Vertical Venting

SECTION D Start-up

Pre Start-up and Safety Checks

Initial Start-up Procedures

Blower and Manifold Adjustments

Post Start-Up Verification

SECTION E Operation

Lighting Instructions

Step-by-step guide for safely lighting the heater.

Turning Off Gas Supply

SECTION F Troubleshooting

Troubleshooting Flowchart

A visual guide to diagnose and resolve operational issues.

UDB Fault History Access