Table of Contents

TABLE OF CONTENTS
SAFETY PRACTICES AND PRECAUTIONS	3-4
CLEARANCES / INSTALLATION SPECIFICATIONS	5-8
INSTALLATION	9-10
LEAK TESTING	11
LIGHTING INSTRUCTIONS	12
CARE AND CLEANING/ TROUBLESHOOTING	13
SERVICING	14
GAS VALVE REPLACEMENT	15-16
HEATER ASSEMBLY PARTS LIST	17
WIRING DIAGRAM	18
WIRING SCHEMATIC	19
WARRANTY	20
OBTAINING SERVICE	21

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Contents

Professional DEL REY Heater Please Retain this Manual for Future Reference Message to OUR Customers Table of Contents Insect Warning Safety Practices and Precautions Safety Practices and Precautions Installation Minimum Clearances to Combustible Material CLEARANCES/INSTALLATION Specifications Side View Clearances Side View Installation Minimum Clearances to NON-COMBUSTIBLE Material Per bracket Installation InstallationGAS Inlet Pressure Mounting ElectricalGAS Piping Leak Test Leak TestingPrecautions Ventilation To Shut Down Heater LIGHTING/OPERATION InstructionsLighting Instructions To Start Heater Care & Cleaning / Basic Troubleshooting Care and CleaningBefore Calling for Service Basic Troubleshooting Removal of Burner Servicing GAS Valve Replacement GAS Valve Replacement Description Heater Parts List 120VAC 60 Hz Wiring Diagram Wiring Schematic DCS will not Cover WarrantyLength of Warranty DCS will Cover Service HOW to Obtain ServiceBefore YOU Call for Service Page Page

DCS DRH48N installation instructions Table of Contents