Operating Instructions; Sequence Of Operation; To Turn Off Gas To Appliance - Dunkirk DMG-240 Installation, Operation & Maintenance Manual

FOR YOUR SAFETY READ BEFORE OPERATING
!
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.

10.1 SEQUENCE OF OPERATION

• With demand for heat, pump circulates water through
primary circuit.
• Combustion fan will come on and begin to operate at
ignition speed.
• Once fan reaches ignition speed, control board will allow
power to flow to spark generator and gas valve creating
ignition in combustion chamber. Flame sensor will
acknowledge presence of flame in combustion chamber
and send a signal to control board.
• Temperature sensor will send signal to control board
allowing the control board to increase / decrease speed
of the fan. The combustion fan will in turn modulate gas
rate accordingly.
• Once central heating loop temperature exceeds central
heating loop setpoint unit will shutdown and go through
3 minute time delay (burner pause time) before another
call for heat.
• During this time the pump will run for additional three
minutes to dissipate any residual heat.

10 - OPERATING INSTRUCTIONS

10.2 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
• Turn gas shutoff valve to closed position. Handle should
• Wait 5 minutes for any gas to clear. Smell for gas,
• Turn gas shutoff valve to the open position. Handle should
• Turn "ON" electrical power to appliance.
• Set thermostat to desired setting.
• If the appliance will not operate, follow instructions TO
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use
• Immediately call your gas supplier from a
• If you cannot reach your gas supplier, call the fire

10.3 TO TURN OFF GAS TO APPLIANCE

• Set thermostat to lowest setting.
• Turn "OFF" all electric power to appliance if service is to
• Turn gas shutoff valve handle to closed position. Handle
62
automatically lights the burner. Do not try to light
burner by hand!
be perpendicular to gas pipe.
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.
be parallel to gas pipe.
TURN OFF GAS TO APPLIANCE and call your service
technician or gas supplier.
!
CAUTION
WHAT TO DO IF YOU SMELL GAS
any phone in your building.
neighbor's phone. Follow the gas supplier's
instructions.
department.
be performed.
should be perpendicular to gas pipe.
P/N 240011656, Rev. E [07/30/2018]