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Dunkirk DCC-205 - User Manual

Dunkirk DCC-205
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

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Questions and Answers

  • S
    Steven HallAug 21, 2025
    What to do if my Dunkirk DCC-205 Boiler has ignition failure?
    • A
      Austin HillAug 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.
  • S
    Sean GrossSep 3, 2025
    How to fix OT Communication Failure in Dunkirk DCC-205 Boiler?
    • C
      Carlos MercadoSep 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.
  • S
    Sarah IbarraSep 1, 2025
    What to do if there is no circulation of water in Dunkirk DCC-205?
    • N
      ngardnerSep 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.
  • A
    Andrea BlairAug 31, 2025
    Why did the thermo fuse trip in my Dunkirk DCC-205?
    • J
      Justin JamesAug 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.
  • L
    Lisa LewisAug 29, 2025
    What to do if NTC flue sensor tripped in Dunkirk DCC-205 Boiler?
    • H
      hallherbertAug 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.
  • T
    Todd HallAug 27, 2025
    How to fix low hydraulic pressure in Dunkirk DCC-205 Boiler?
    • K
      Katrina MartinAug 27, 2025
      If the hydraulic pressure in your Dunkirk Boiler is too low, refill the heating system by opening the cold water tap.
  • M
    Michael DuarteAug 26, 2025
    What to do if hydraulic pressure is too high in Dunkirk DCC-205?
    • J
      Joshua GonzalezAug 26, 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.
  • E
    Eric WarrenAug 25, 2025
    How to fix combustion test alarm during calibration of Dunkirk DCC-205 Boiler?
    • D
      Dustin YoungAug 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.
  • H
    hoffmanrandallAug 22, 2025
    What to do if safety thermostat tripped in Dunkirk DCC-205?
    • A
      Ashley AllenAug 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

Important Safety Information

1. Safety Information

Essential safety precautions, hazard symbols, and warnings.

3 - COMPONENT LISTING

Dunkirk DCB 100 Components

Identifies and illustrates key parts of the DCB 100 boiler.

9 - START UP PROCEDURE

9.1 Central Heating System Connections - HEAT ONLY

Steps for connecting the heating-only system to the boiler.

9.5 Control Panel

Overview of the boiler control panel interface and its functions.

10 - OPERATING INSTRUCTIONS

10.1 Testing For Gas Leaks And Purging The Gas Supply

Steps for safely testing gas connections and purging the supply.

11 - GENERAL MAINTENANCE AND CLEANING

11.1 Beginning of Each Heating Season

Pre-season checks for safe boiler operation and efficiency.

12 - RATINGS AND CAPACITIES

12.1 Ratings and Capacity

13 - TROUBLE SHOOTING

13.1 Error Messages and Resetting the Boiler

LOW WATER CUTOFF

Low Water Cut Off - Heating Only and Combi Boilers

ERROR CODE TABLE

IMPORTANT INFORMATION

Commissioning Function is as follows:

Dunkirk DCC-205 Specifications

General IconGeneral
BrandDunkirk
ModelDCC-205
CategoryBoiler
LanguageEnglish

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