Table of Contents

TABLE OF CONTENTS
SECTION	PAGE
Important Safety Information	3
Safety Information for Users of LP Gas	4
Requirements for Massachusetts	5
Introduction	6
Speciﬁcations	6
Gas Supply	7
Gas Conversion Instructions	8
Clearances	9
Furnace Installation	9-12
Lighting Instructions	13
Wiring	14
Maintenance	15
Operation and Troubleshooting	15-16
How to Order Repair Parts	17
Parts List	17
Parts View	18
Service Notes	19

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Contents

Installation Instructions What to do if YOU Smell GAS Table of Contents Important Safety Information Do not Operate this Appliance Without Front Panel Installed No Odor Detected Odor Fade Safety Informtion for Users of LP-GASLP-GAS Warning Odor Requirements for Massachusetts Clear of ALL Obstructions Specifications Introduction Recommended Gas Pipe Diameter Pressure Testing of the Gas Supply SystemGAS Supply Checking Manifold Pressure Conversion Instructions from Natural GAS to LP Propane GAS GAS Conversion InstructionsConversion Instructions from LP Propane GAS to Natural GAS Clearances Furnace InstallationInstallation on Rugs and Tile Locating Wall Opening Figures 2, 3 Installing Wall Bracket Figures 5 Venting Figures 7, 8 Furnace Installation Vent Terminal Figure Reassembly and Resealing Vent-Air Intake System Condensate Removal Figures 11 For Your Safety Read Before Operating Lighting Instructions Internal Electronic Thermostat/Temperature Control Board WiringReplacement of Thermistor with 24 Volt Wall Thermostat Maintenance Operation and Troubleshooting Furnace Control Board Diagnostics # of Blinks Fault Condition Fault Correction HOW to Order Repair Parts Parts List Parts View Service Notes

Langley/Empire DV-20E-5, DV-40E-5 installation instructions Table of Contents