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Dunkirk DCB-125 - User Manual

Dunkirk DCB-125
139 pages
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Manufactured by:
ECR International Inc.
2201 Dwyer Avenue, Utica, NY 13501
Tel. 800 325 5479
www.ecrinternational.com
DCB-100
DCC-115
DCB-125
DCC-150
DCB-165
DCC-205
CONDENSING
WALL MOUNTED
GAS FIRED BOILER

Table of Contents

Other manuals for Dunkirk DCB-125

Preview: Installation, Operation & Maintenance Manual
Installation, Operation & Maintenance Manual117 pages

Questions and Answers

  • M
    Mr. Philip SuarezAug 21, 2025
    What to do if my Dunkirk DCB-125 has ignition failure?
    • M
      Mary ThomasAug 21, 2025
      If your Dunkirk Boiler experiences ignition failure, begin by inspecting the condensate trap for proper operation. Then, check the sensing electrode, spark electrode, and cable. Ensure there is no flue recirculation and verify electrical continuity between the burner and the ground. Examine the gas orifice and gas pressure. If necessary, perform automatic and manual calibration functions.
  • J
    Jose ClaytonSep 3, 2025
    How to fix OT Communication Failure in Dunkirk DCB-125?
    • S
      stevenjacksonSep 3, 2025
      If your Dunkirk Boiler displays an OT Communication Failure, check the OT connection. Remove power, reconnect the OT connections, and if the problem persists, replace the service key.
  • J
    Jason HammondSep 1, 2025
    What to do if there is no circulation of water in Dunkirk Boiler?
    • D
      David LewisSep 1, 2025
      If your Dunkirk Boiler has no water circulation and control is performed via temperature sensor, check for correct water circulation and pump operation. Also, check the correct connection of the NTC sensor on the pipe.
  • J
    josephcookAug 31, 2025
    Why did the thermo fuse trip in my Dunkirk DCB-125 Boiler?
    • A
      Alicia BlakeAug 31, 2025
      If the thermo fuse has tripped in your Dunkirk Boiler due to over temperature, or if the wire harness is disconnected from the thermo fuse or the board, or if the wire harness is cut, check the thermo fuse and ensure correct water circulation and pump operation. Also, check the status of the primary exchanger. Consider replacing the heat exchanger. Verify the wire harness installation and its continuity.
  • M
    Maria ObrienAug 29, 2025
    What to do if NTC flue sensor tripped in Dunkirk Boiler?
    • A
      Amber PhillipsAug 29, 2025
      If the NTC flue sensor in your Dunkirk Boiler has tripped due to over temperature, check the thermostat and ensure correct water circulation and pump operation. Also, check the status of the primary exchanger.
  • A
    Amy WillisAug 27, 2025
    How to fix low hydraulic pressure in Dunkirk DCB-125?
    • A
      Andrea AguirreAug 27, 2025
      If the hydraulic pressure in your Dunkirk Boiler is too low, refill the heating system by opening the cold water tap.
  • E
    ebrightAug 27, 2025
    What to do if hydraulic pressure is too high in Dunkirk DCB-125 Boiler?
    • J
      Jason PalmerAug 27, 2025
      If the hydraulic pressure in your Dunkirk Boiler is too high, relieve the pressure using the relief valve or by draining the system. Ensure that the water feed is operating correctly.
  • T
    Tony WhiteAug 25, 2025
    How to fix combustion test alarm during calibration of Dunkirk Boiler?
    • K
      Kenneth MorrisAug 25, 2025
      If your Dunkirk Boiler's combustion test triggers an alarm during commissioning or calibration, examine the flame sensor. Check for any obstructions in the flue pipe and look for recirculation issues. Verify the gas pressure, gas orifice, and gas quality. You may need to perform automatic and manual calibration functions.
  • L
    Luis HarrisonAug 23, 2025
    What to do if safety thermostat tripped in Dunkirk Boiler?
    • S
      smithchristineAug 23, 2025
      If the safety thermostat has tripped on your Dunkirk Boiler due to over temperature, which may be caused by a blocked pump or air in the heating circuit, check the safety thermostat and its cable. Also, verify the correct circulation of water and the pump.

Summary

INSTALLATION, OPERATION & MAINTENANCE MANUAL

Important Safety Information

Crucial safety guidelines and warnings for installation and operation.

Component Listing

Locating Boiler

Guidelines for selecting a safe and appropriate installation location.

Combustion Air and Vent Piping

Instructions and requirements for installing combustion and vent piping systems.

Hydronic Piping

Details on system piping, connections, and recommendations for installation.

Gas Supply Piping

Specifications and recommendations for gas supply piping installation.

Electrical Connections

Guidelines for proper wiring, grounding, and electrical connections.

Start Up Procedure

Step-by-step instructions for initial boiler startup and commissioning.

Operating Instructions

Guidance on how to operate the boiler for heating and hot water.

General Maintenance and Cleaning

Procedures for regular maintenance and cleaning to ensure safe operation.

Trouble Shooting

Diagnosing and resolving common operational issues and error codes.

Appendix A - Wiring Diagrams

IMPORTANT SAFETY INFORMATION

General Boiler Installation

Boiler installation must be completed by a qualified agency.

Installation Compliance

General Information - Hydronic Piping

Optional Equipment

Accessories

Low Water Cutoff

Low Water Cut Off - Heating Only and Combi Boilers

Error Code Table

Fault Solution Sections

Dunkirk DCB-125 Specifications

General IconGeneral
BrandDunkirk
ModelDCB-125
CategoryBoiler
LanguageEnglish

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