Raypak HD401 User Manual

INSTALLATION & OPERATING
INSTRUCTIONS
CATALOG NO. 1000.52D Effective: 10-15-15 Replaces: 09-14-12 P/N 241356 Rev. 5
WARNING: If these instructions are not followed exactly, a fire or explosion may
result causing property damage, personal injury or death
.
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.
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.
Installation and service must be performed by a qualified installer, service agency or
the gas supplier.
This manual should be maintained in legible condition and kept adjacent to the heater or in another safe place for
future reference.
Models HD101–HD401
Types H & WH
®

Raypak HD401 Specifications

General

Brand	Raypak
Model	HD401
Category	Water Heater
Language	English

Summary

Safety Warnings

General Safety

Water Temperature Scald Risks

Hazards of hot water temperatures over 125°F and scald prevention.

Installation

Combustion and Ventilation Air

Requirements for air supply for proper combustion and ventilation.

Gas Supply

Procedures and requirements for connecting the gas supply.

Electrical Power Connections

Instructions for connecting electrical power, including voltage and wiring.

Venting

Requirements and guidelines for flue gas venting systems.

Controls

Troubleshooting Guide

HD101-HD401 Troubleshooting Steps

Step-by-step guide to diagnose and resolve common operational issues.

Initial Start-Up

Pre-Start-Up Procedures

Steps for filling the system, inspecting venting, and checking for leaks.

Operating Instructions

Blower and Burner Adjustment

Steps for adjusting blower air and main burner settings.

Gas Valve Adjustment

Instructions for adjusting manifold gas pressure on different gas valves.

Post Start-Up Check

Safety Control Testing

Maintenance

Suggested Minimum Maintenance Schedule