Dunkirk D249 Commercial Gas Boiler User Manual

: September 4, 2024
: Dunkirk

Table of Contents

Dunkirk D249 Commercial Gas Boiler
SAFETY INSTRUCTION
SAFETY SYMBOLS & WARNINGS
Lighting Instructions
General Instructions
Installer Information
ABOUT COMPANY
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Dunkirk D249 Commercial Gas Boiler

SAFETY INSTRUCTION

WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
- Do not store or use gasoline or other flammable 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 fire department.
- Installation and service must be performed by a qualified installer, service agency or the gas supplier.
Do not use this boiler if any part has been under water. Immediately call a qualified 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.

SAFETY SYMBOLS & WARNINGS

Maintenance and Service must be completed by qualified agency.

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 qualified 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.

Become familiar with symbols identifying potential hazards.
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.

DANGER
Indicates a hazardous situation which, if not avoided, WILL result in death or serious injury
WARNING
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
Used to address practices not related to personal injury.
Information and specifications outlined in this manual in effect at the time of printing of this manual. ECR International reserves the right to discontinue, change specifications or system design at any time without notice and without incurring any obligation, whatsoever.

Lighting Instructions

WARNING
If you do not follow these instructions exactly, a fire 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 floor because some gas is heavier than air and will settle to the floor.
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 qualified service technician. Force or attempted repair may result in fire or explosion.
Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect appliance and to replace any part of control system and any gas control which has been under water.

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 fire department.
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.

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 floor. 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.

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.

General Instructions

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.

Before the beginning of each heating season have a qualified agency check and clean the boiler. Check for the following:

Flue ways for dirt and scale.
Venting flue connectors for plugging, sagging, rust through and solid joints.
Burners and pilot for proper flame and operation.
Gas piping for leaks.
Operation of electronics and wiring condition.
Functionality of low water cutoff (steam).
Functionality of Pressure Control.
Water pump oiling (See manufacturer’s manual).
Safety relief valve or safety valve.
Blow down.
Air vents on steam heaters.
Operation of other custom system components.
Purge air from water systems.
Clean and Flush steam systems, if required, and fill to proper level. (See Figure #3)
Perform general housekeeping and maintenance as specified below.

Weekly Maintenance

Boilers are equipped with safety valve (steam). Refer to manufacturer’s instructions for operation and maintenance.
If valve leaks steam when boiler is operating at normal pressure it must be replaced. Contact qualified service agent to replace or repair.
On steam boilers with manual low water cut-off valves, open purge valve until water flows clear. See Figure #3.

Annually or Beginning of Each Heating Season

Contact qualified agency to perform maintenance and cleaning per Installation, Operation and Maintenance manual.
Inspection will include examining all flue 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.

For Your Safety
This product burns gas to produce heat. The appliance must be properly installed, operated, and maintained to avoid exposure to appreciable levels of carbon monoxide and the installer is required to confirm that at least one carbon monoxide alarm is installed in the living space before the appliance is put into operation. It is important for the carbon monoxide alarms to be installed, maintained, and replaced following the alarm manufacturer’s instructions and applicable local codes.