Table Of Contents; Warnings And Safety Symbols - Dunkirk 90-50 Installation, Operation & Maintenance Manual

Warnings and Safety Symbols ....................................................................................................... 3
Introduction ................................................................................................................................ 4
boiler Ratings & capacities ........................................................................................................... 5
boilers For use At high Altitude ..................................................................................................... 6
Rules For Safe Installation And Operation ....................................................................................... 8
before Installing The boiler ........................................................................................................... 8
Placing The boiler .......................................................................................................................11
Near boiler Piping .......................................................................................................................12
combustion Air and Vent Pipe ......................................................................................................19
Gas Supply Piping .......................................................................................................................24
electrical Wiring .........................................................................................................................26
controls and Accessories .............................................................................................................30
Water Treatment & Freeze Protection ............................................................................................32
Start up ....................................................................................................................................34
Operating Instructions .................................................................................................................35
To Turn Off Gas To Appliance ........................................................................................................35
check Out Procedure and Adjustment ...........................................................................................36
Installation and Check-Out Certificate............................................................................................40
Maintenance And cleaning ...........................................................................................................41
Detailed Sequence Of Operation ...................................................................................................44
Troubleshooting ..........................................................................................................................47
Differential Air Pressure Switch check ...........................................................................................55
IMPORTANT: ThIS MANuAL MuST be kePT NeAR The bOILeR FOR FuTuRe ReFeReNce!!
Indicates an imminently hazardous situation
!
which, if not avoided, WILL result in death,
serious injury or substantial property damage.
Indicates an imminently hazardous situation
!
which, if not avoided, may result in death,
serious injury or substantial property damage.

Table of ConTenTs

Warnings and safeTy symbols

DANGER
WARNING
Indicates an imminently hazardous situation
!
which, if not avoided, may result in injury or
property damage.
Indicates information which should be
followed to ensure proper installation and
operation.
H
3
CAUTION
NOTICE