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Q90-125
Dunkirk Q90-125 User Manual
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Q90 125-200 SERIES II
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ENT
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NTENANCE MANU
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An ISO 9001-2008 Certified Company
P/N 240009431, Rev
. B [12/2012]
Manufacturedby:
ECRInternational,Inc.
2201 Dwyer
Avenue, Utica NY
13504-4729
web site: www
.ecrinternational.com
Mode
ls
Q90
-
1
25
Q90
-
1
50
Q90
-
1
7
5
Q90
-
200
2
Table of Contents
Table of Contents
2
Boiler Ratings & Capacities
3
Safe Installation and Operation
5
Locating the Boiler
6
Combustion Air/ Vent Requirements
11
Combustion Air and Vent Pipe
13
Gas Supply Piping
15
Electrical Wiring
16
Controls and Accessories
20
Startup
22
Detailed Sequence of Operation
27
Sequence of Operation Diagnostics
28
Checkout Procedure & Adjustments
29
High Limit Control and LWCO
31
Troubleshooting
33
Maintenance and Cleaning
42
Appendix A Dielectric Isolation &Antifreeze Protection
44
Dielectric Isolation &Antifreeze Protection
44
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Dunkirk Q90-125 Specifications
General
Fuel Type
Natural Gas or Propane
Boiler Type
Condensing
Input BTU
125, 000
AFUE
95%
Water Content
3.5 gallons
Vent Diameter
3 inches
Efficiency
95%
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