Table Of Contents - Dunkirk DXL Series Installation, Operation & Maintenance Manual

1 - Physical Data ....................................................................................................................................... 4
2 - Safety Symbols And Warnings .............................................................................................................. 5
3 - Locating The Boiler .............................................................................................................................. 7
3.1 Installation Requirements .................................................................................................................. 7
3.2 Minimum Clearances To Combustible Construction..................................................................................7
3.3 Recommended Clearances For Service ................................................................................................. 7
3.4 Boiler Location Considerations ............................................................................................................ 8
4 - Connecting Supply And Return Piping .................................................................................................. 9
4.1 Connection Locations ........................................................................................................................ 9
4.2 Safety Relief Valve Installation............................................................................................................9
4.3 Flush And Rinse System ................................................................................................................. 10
4.4 Water Treatment ........................................................................................................................... 10
4.5 Supply And Return Requirements ..................................................................................................... 11
4.6 Special Conditions .......................................................................................................................... 11
5- Ventilation & Combustion Air .............................................................................................................. 18
5.1 Requirements................................................................................................................................. 18
6 - Vent System Modification ................................................................................................................... 19
6.1 Removal Of Existing Boiler From Venting System ................................................................................ 19
7 - Vent Installation ................................................................................................................................ 20
7.1 Check Your Chimney ....................................................................................................................... 20
7.2 Requirements................................................................................................................................. 20
7.3 Chimney Inspection ........................................................................................................................ 20
7.4 Vent Pipe ....................................................................................................................................... 20
8 - Vent Damper Installation & Instructions ............................................................................................ 21
8.1 Vent Damper ................................................................................................................................. 21
9 - Connecting Gas Service ...................................................................................................................... 23
9.1 General ......................................................................................................................................... 23
9.2 Leak Check Gas Piping .................................................................................................................... 23
10 - Electrical .......................................................................................................................................... 24
10.1 Electrical Wiring ............................................................................................................................ 24
10.2 Thermostat Installation .................................................................................................................. 24
11 - Wiring Diagrams ............................................................................................................................. 25
12 - Lighting Instructions ........................................................................................................................ 27
12.1 Lighting Procedure For Boiler With Intermittent Pilot System................................................................27
12.2 Operating Instructions For Intermittent Pilot System...........................................................................27
12.3 To Turn Off Gas To The Appliance .................................................................................................... 27
13 - Normal Sequence Of Operation ........................................................................................................ 28
13.1 General ....................................................................................................................................... 28
14 - General Maintenance And Care Instructions .................................................................................... 29
14.1 Seasonal Startup .......................................................................................................................... 29
14.2 Clean Flue Gas Passageways .......................................................................................................... 29
14.3 General Maintenance ..................................................................................................................... 30
14.4 Adjusting Gas Input ...................................................................................................................... 31
15 - Ratings And Capacities ..................................................................................................................... 32
Appendix A - Control Function ................................................................................................................. 33
A-1. Intermittent Pilot........................................................................................................................... 34
Appendix B - Vent Damper Installation ................................................................................................... 36
B.1 Damper Installation ........................................................................................................................ 36
B.2 Vent Damper ................................................................................................................................. 36
B.3 Vent Damper Harness - Molex Plugs .................................................................................................. 37
B.4 Vent Damper Troubleshooting Guide.................................................................................................. 38

TABLE OF CONTENTS

3 PN 240012787 Rev. C [11/15/2020]