Dunkirk Q90-100, Installation, Operation & Maintenance Manual

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INTRODUCTION
Introduction
• This appliance is a gas- fi red direct vent hot water boiler
with cast aluminum boiler sections.
• The heating system water absorbs large amounts of
heat from the cast aluminum heat exchanger, cooling
fl ue gases and causing condensation.
• Sealed combustion, premix gas burner, and low fl ame
temperature means reduced CO and NOx emissions,
which contribute to cleaner and healthier environment.
• This appliance takes its combustion air directly from
outdoors (sealed combustion) and does not compete
with building occupants for fresh air.
• Sealed combustion (also known as “direct vent”)
is safest and best way to obtain plenty of clean
combustion air.
Dimensions ....................................................................................................................2
Introduction ...................................................................................................................3
Important Safety Information ...........................................................................................4
Boiler Ratings & Capacities ..............................................................................................5
Boilers For Use At High Altitude .......................................................................................5
Before Installing The Boiler ..............................................................................................8
Boiler Installation ...........................................................................................................9
Near Boiler Piping ......................................................................................................... 11
Combustion Air And Vent Pipe ........................................................................................ 22
Gas Supply Piping ......................................................................................................... 28
Electrical Wiring ........................................................................................................... 30
Controls And Accessories ............................................................................................... 35
Start Up ...................................................................................................................... 37
Operating Instructions ................................................................................................... 38
S9381a Integrated Boiler Control Operation And Adjustments ............................................. 39
Maintenance And Cleaning ............................................................................................. 45
Troubleshooting ............................................................................................................ 47
Differential Air Pressure Switch Check ............................................................................. 49
Installation And Check-Out Certi
fi cate ............................................................................. 50
Appendix A - Water Quality, Water Treatment And Freeze Protection .................................... 51
• Induced draft fan draws in outside combustion air,
takes cooler fl ue gases from boiler unit and provides
positive removal of fl ue gases from the building
through readily available PVC and CPVC pipes.
• These low pressure gas- fi red hot water boilers are
design certi fi ed by CSA International for use with
natural gas and propane gases (90-100 model is
certi fi ed for natural gas only).
• Boilers are constructed and hydrostatically tested
for maximum working pressure of 50 psig (pounds
per square inch gage) in accordance with A.S.M.E.
(American Society of Mechanical Engineers) Boiler and
Pressure Vessel Code Section IV Standards for heating
boilers.