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Dunkirk
Boiler

Model # Q90-50 Official Dunkirk boiler & storage tank

Here are the diagrams and repair parts for Official Dunkirk Q90-50 boiler & storage tank, as well as links to manuals and error code tables, if available.

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  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Installation guide
Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 119 parts  |
Relief Valve 146-22-011
#6

Boiler block/piping assy diagram

Relief valve

Part #146-22-011

Replaced by #10-408-05

?
Manufacturer substitution
This part replaces 146-22-011. Substitute parts can look different from the original.
$44.77 | 
12% OFF Phone Price : $50.77
In Stock
Burner 146-31-007
#2B

Mixer/air pressure switch assy diagram

Burner

Part #146-31-007

Replaced by #550001811

?
Manufacturer substitution
This part replaces 146-31-007. Substitute parts can look different from the original.
$359.63
In Stock
Transformer 146-62-801
#8

Jacket/base assy diagram

Transformer

Part #146-62-801

Replaced by #550001339

?
Manufacturer substitution
This part replaces 146-62-801. Substitute parts can look different from the original.
$69.09
In Stock
Blower 146-31-077
#5

Flue adapter/exhauster assy diagram

Blower

Part #146-31-077

Replaced by #2272065

?
Manufacturer substitution
This part replaces 146-31-077. Substitute parts can look different from the original.
$543.40 | 
$12.00 OFF Phone Price : $555.40
In Stock
Circulator 146-26-045
#NI

Jacket/base assy diagram

Circulator

Part #146-26-045

Replaced by #103251

?
Manufacturer substitution
This part replaces 146-26-045. Substitute parts can look different from the original.
$224.79 | 
5% OFF Phone Price : $236.79
In Stock
Drain Valve 146-22-000
#19

Boiler block/piping assy diagram

Drain valve

Part #146-22-000

Replaced by #31-606-04

?
Manufacturer substitution
This part replaces 146-22-000. Substitute parts can look different from the original.
$36.16
In Stock
Furnace Burner Igniter (replaces 438-00-014) 438-00-013
#11A

Mixer/air pressure switch assy diagram

Furnace burner igniter (replaces 438-00-014)

Part #438-00-013

The manufacturer no longer makes this part, and there's no substitute part

Npt Tube Tee 1/2x1/2x1/2" 146-31-110
#7

Condensate drain trap assy diagram

Npt tube tee 1/2x1/2x1/2"

Part #146-31-110

The manufacturer no longer makes this part, and there's no substitute part

Plug 1/2" 146-31-176
#19

Jacket/base assy diagram

Plug 1/2"

Part #146-31-176

The manufacturer no longer makes this part, and there's no substitute part

Flexible Coupling 146-31-311
#6

Mixer/air pressure switch assy diagram

Flexible coupling

Part #146-31-311

The manufacturer no longer makes this part, and there's no substitute part

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