Dunkirk DXL-125 - Table of Contents

3
TABLE OF CONTENTS
IMPORTANT: Read the following instructions
COMPLETELY before installing!!
KEEP THIS MANUAL NEAR BOILER
RETAIN FOR FUTURE REFERENCE
WARNING
Keep boiler area clear and free from combustible
materials, gasoline and other ammable vapors and
liquids.
DO NOT obstruct air openings to the boiler room.
Modication, substitution or elimination of factory
equipped, supplied or specied components may
result in personal injury or loss of life.
TO THE OWNER - Installation and service of this
boiler must be performed by a qualied installer.
TO THE INSTALLER - Leave all instructions with
boiler for future reference.
When this product is installed in the Commonwealth
of Massachusetts the installation must be performed
by a Licensed Plumber or Licensed Gas Fitter.
!
WARNING
Fire, explosion, asphyxiation and electrical shock
hazard. Improper installation could result in death
or serious injury. Read this manual and understand
all requirements before beginning installation.
!
CAUTION
Laceration, burn hazard. Metal edges and parts
may have sharp edges and/or hot. Use appropriate
personal protection equipment to include safety
glasses and gloves when installing or servicing this
boiler. Failure to follow these instructions could
result in minor or moderate injury.
!
DANGER
Indicates a hazardous situation which, if not
avoided, WILL result in death or serious injury.
!
WARNING
Indicates a hazardous situation which, if not
avoided, could result in death or serious injury.
!
Become familiar with symbols identifying potential
hazards.
NOTICE
Used to address practices not related to personal
injury.
CAUTION
Indicates a hazardous situation which, if not
avoided, may result in minor or moderate injury.
!
Dimensions ....................................................... 2
Ratings & Data - Natural Gas & Propane Gas ......... 4
Locating the Boiler ............................................. 5
Ventilation & Combustion Air ............................... 6
Supply and Return Piping .................................... 7
Vent Installation ...............................................12
Vent System Modication ...................................12
Vent Damper Installation & Instructions ...............13
Gas Service ....................................................14
Electrical Section ..............................................15
Wiring Diagram - Intermittent Ignition ................16
Lighting Instructions .........................................18
Sequence of Operation ......................................19
General Instructions .........................................19
Checking Gas Input Rate To Boiler ......................21
Control Settings ...............................................22
System Start-Up..............................................23
Limit Control Troubleshooting ............................24
Intermittent Pilot Troubleshooting .......................25
Appendix A-1 - Vent Damper Harness ............. 27
Appendix A-2 - Vent Damper TroubleShooting 28
P/N 240009041, Rev. C [04/30/2017]