Dunkirk D249 Series Guide

USER'S
INFORMATION
MANUAL
Information and specications outlined in this manual in effect at the
time of printing of this manual. ECR International reserves the right to
discontinue, change specications or system design at any time without
notice and without incurring any obligation, whatsoever.
Check our website frequently for updates: www.ecrinternational.com
P/N 240010360, Rev. A [11/2013]
SERIES D249
GAS FIRED STEAM HEATING BOILER
WARNING: If the information in this manual is not
followed exactly, a re or explosion may result causing
property damage, personal injury or loss of life.
Do not store or use gasoline or other ammable
vapors and liquids in the vicinity of this or any
other appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use
any phone in your building.
• Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call the
re department.
Installation and service must be performed by a
qualied installer, service agency or the gas
supplier.
Do not use this boiler if any part has been under water. Immediately call a qualied service technician to
inspect the boiler and to replace any part of the control system and any gas control which has been under
water.
Should overheating occur or the gas supply fail to shut off, do not turn off or disconnect the electrical supply to
the pump. Instead, shut off the gas supply at a location external to the appliance.
DUNKIRK BOILERS
2201 Dwyer Avenue, Utica NY 13501
web site: www.ecrinternational.com

2
USERS INFORMATION MANUAL
INSTRUCTIONS FOR OPERATION AND MAINTENANCE
OF GAS FIRED HOT WATER HEATING BOILER
RETAIN FOR FUTURE REFERENCE
SAFETY SYMBOLS & WARNINGS
DANGER
Maintenance and Service must be completed by qualied
agency.
NOTICE
Used to address practices not related to personal
injury.
CAUTION
Indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.
!
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
!
DANGER
Indicates a hazardous situation which, if not
avoided, WILL result in death or serious injury
!
This is the safety alert symbol. Symbol alerts you to
potential personal injury hazards. Obey all safety messages
following this symbol to avoid possible injury or death.
Become familiar with symbols identifying
potential hazards.
WARNING
Fire, explosion, asphyxiation and electrical shock
hazard. Improper maintenance and service could
result in death or serious injury. Read this manual
and understand all requirements, including use of
qualied agency where directed.
!
WARNING
Fire, explosion, and asphyxiation hazard. Before
lighting verify boiler contains water visible in gauge
glass . Failure to follow these instructions could
result in death or serious injury.
!

3
LIGHTING INSTRUCTIONS
Figure 1 - Honeywell VR8300 Series Gas Valve
(300/400 Bases)
Figure 2 - Robertshaw 7000 DERHC Series Gas Valve
(500 Base)
WARNING
If you do not follow these instructions
exactly, a re or explosion may result
causing property damage, personal injury
or loss of life.
• This appliance is equipped with an ignition device
which automatically lights burner. Do NOT try to
light this burner by hand.
• Before operating smell all around appliance area
for gas. Be sure to smell next to oor because
some gas is heavier than air and will settle to the
oor.
• Use only your hand to turn the gas shutoff
valve. Never use tools. If valve will not turn
by hand, do not try to repair it, call a qualied
service technician. Force or attempted repair may
result in re or explosion.
• Do not use this appliance if any part has
been under water. Immediately call a qualied
service technician to inspect appliance and to
replace any part of control system and any gas
control which has been under water.
!
Operating Instructions
Stop! Read Safety information above.
• Set thermostat to lowest setting.
• Turn "OFF" all electrical power to appliance.
• This appliance is equipped with an ignition device which
automatically lights the burner. Do not try to light
burner by hand!
• Remove front jacket panel.
• Turn gas shutoff valve clockwise to closed position.
Handle should be perpendicular to gas pipe. See Figures
2-1 and 2-2.
• Wait 5 minutes for any gas to clear. Smell for gas,
including near oor. If you smell gas, STOP! Follow
instructions on this page: “What To Do If You Smell
Gas.” If you do not smell gas, go to next step.
• Turn gas shutoff valve counter clockwise to the
open position. Handle should be parallel to gas pipe.
• Replace front jacket panel.
• Turn "ON" electrical power to appliance.
• Set thermostat to desired setting.
• If the appliance will not operate, follow instructions TO
TURN OFF GAS TO APPLIANCE and call your service
technician or gas supplier.
CAUTION
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use
any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call the re
department.
!
2.2 To Turn Off Gas To Appliance
• Set thermostat to lowest setting.
• Turn "OFF" all electric power to appliance if service is
to be performed.
• Remove front jacket panel.
• Turn gas shutoff valve handle clockwise to closed
position. Handle should be perpendicular to gas pipe.
See Figures 2-1 and 2-2.
• Replace front jacket panel.

4
Perform general housekeeping and maintenance as speci-
ed below.
Weekly Maintenance
• Boilers are equipped with safety valve (steam).
Refer to manufacture's instructions for operation and
maintenance.
• If valve leaks steam when boiler is operating at normal
pressure it must be replaced. Contact qualied service
agent to replace or repair.
• On steam boilers with manual low water cut-off valves,
open purge valve until water ows clear. See Figure# 3.
Annually or Beginning of Each Heating Season
• Contact qualied agency to perform maintenance and
cleaning per Installation, Operation and Maintenance
manual.
• Inspection will include examining all ue product
carrying areas, vent system, burner and heat
exchanger.
• Filling the boiler if drained as part of End of Heating
Season procedure and blowing down the boiler.
GENERAL INSTRUCTIONS
Before the beginning of each heating season have a
qualied agency check and clean the boiler.
Check for the following:
1. Flue ways for dirt and scale.
2. Venting ue connectors for plugging, sagging, rust
through and solid joints.
3. Burners and pilot for proper ame and operation.
4. Gas piping for leaks.
5. Operation of electronics and wiring condition.
6. Functionality of low water cutoff (steam).
7. Functionality of Pressure Control.
8. Water pump oiling (See manufacturer's manual).
9. Safety relief valve or safety valve.
10. Blow down.
11. Air vents on steam heaters.
12. Operation of other custom system components.
13. Purge air from water systems.
14. Clean and Flush steam systems, if required, and ll to
proper level. (See Figure #3)
WARNING
Burn and scald hazard. Discharge of water, vapor
and steam may scald. Failure to follow these
instructions could result in death or serious injury.
!
WARNING
Burn and scald hazard. Discharge of water, vapor
and steam may scald. Water and steam are under
pressure, open all valves slowly. Failure to follow
these instructions could result in death or serious
injury.
!

5
GENERAL INSTRUCTIONS
Maintain proper water level – Flush manual Low Water Cutoff once a week.
SKIM TEE
!
Figure 3 - Steam Boiler – Optimum Water Level

6
NOTES

7
Date Service Performed Company Name & Tech Initials Company Address & Phone #

Name:
Address:
Phone: Email:
Installer Information