Dunkirk DXL Series - User Manual

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DXL

CAST IRON

GAS FIRED BOILERS

FOR FORCED HOT WATER

With Hydrolevel Control

INSTALLATION, OPERATION &

MAINTENANCE MANUAL

Models

DXL-060K

DXL-095K

DXL-120K

DXL-150K

DXL-175K

DXL-205K

DXL-235K

Tested For 100 psi.

ASME

Working Pressure

Manufactured by:

ECR International Inc.

2201 Dwyer Avenue, Utica, NY 13501

Tel. 800 325 5479

www.ecrinternational.com

PN 240012787 REV. C [11/15/2020]

Table of Contents

Questions and Answers

J
James BrooksAug 11, 2025
What to do if my Dunkirk DXL has no power between 4 & 1?
- B
  bradleymoralesAug 11, 2025
  If your Dunkirk Boiler has no power between points 4 and 1, there are several potential causes. First, check if the limit switch is off and turn it on. A bad transformer could also be the problem, requiring replacement. Examine all connections for looseness or breakage, and tighten, repair, or replace them as needed. Also, check the fuse or circuit breaker and replace or reset it if necessary. Ensure the disconnect switch is on, and verify that the harness is properly plugged into the receptacle on the aquastat.
J
jessica32Aug 20, 2025
What to do if my Dunkirk DXL Boiler has no power between 4 & 2 but power between 4 & 1 when calling for heat?
- M
  Mary JenkinsAug 20, 2025
  If your Dunkirk Boiler shows no power between points 4 and 2 but does show power between 4 and 1 when calling for heat, it could be due to several reasons. First, ensure that the thermostat is actually calling for heat by turning it up. A burned-out heat anticipator in the thermostat could also be the problem, in which case you should replace the thermostat. Check for any loose or broken connections and tighten, repair, or replace them. Additionally, the operating limit, pressure control, or low water cutoff might be off; turn them on. Finally, check the blocked vent switch or flame rollout and reset or replace the switch as necessary.
C
Catherine ColeAug 31, 2025
Why does my Dunkirk Boiler have power between 4 & 1 and 4 & 2, but the damper is open?
- L
  Lisa MyersAug 31, 2025
  If your Dunkirk Boiler has power between points 4 & 1 and 4 & 2, but the damper remains open, it could be due to a loose or broken connection, so you should tighten, repair, or replace the connection. Alternatively, the damper motor itself may be defective, requiring replacement of the damper motor assembly.

Dunkirk DXL Series Specifications

General

Brand	Dunkirk
Model	DXL Series
Category	Boiler
Language	English

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