Book 1: 2-10 - Boiler Programming Controls Flashcards
What is the name given to the component that coordinates and sequences the boiler operation?
Select one:
A. Plant controller
B. Boiler master
C. Programming controller
D. Air/fuel ratio controller
E. Header pressure controller
C. Programming controller
What is the device used to determine that the fan motor is working:
Select one:
A. Indicator light
B. Air flow switch
C. Flame scanner
D. Power amperage draw meter
E. Motor contactor
B. Air flow switch
The two types of boiler combustion control include:
1. On-Off
2. Automatic
3. Modulating
4. Manual
Select one:
A. 2, 3
B. 3, 4
C. 1, 2
D. 2, 4
E. 1, 3
E. 1, 3
The switch in the operating control of a steam boiler is closed by:
Select one:
A. Falling steam temperature
B. Rising steam temperature
C. Falling water pressure
D. Falling steam pressure
E. Rising steam pressure
D. Falling steam pressure
The programmed startup sequence of oil-fired boilers with no pilot light is as follows:
1. The flame detector senses the flame and causes the flame relay to close
2. The spark from the ignition transformer ignites the main burner
3. The load relay energizes the ignition transformer, fuel oil shut-off valve, and motor driving the air fan and fuel pump
4. The ignition transformer is then de-energized
5. The operating control closes a switch
Select one:
A. 1, 2, 3, 4, 5
B. 4, 5, 2, 1, 3
C. 5, 3, 2, 1, 4
D. 2, 5, 1, 4, 3
E. 3, 2, 1, 5, 4
C. 5, 3, 2, 1, 4
The lock-out switch will be actuated when the:
Select one:
A. Operating control opens
B. Operating control closes
C. Flame scanner loses the flame
D. Low water fuel cut-off opens
E. Power fails
C. Flame scanner loses the flame
Purging a furnace means forcing a flow of:
Select one:
A. Water through a furnace for a set period of time when the burner is in operation.
B. Air through a furnace for a set period of time when the burner is in operation.
C. Fuel through a furnace for a set period of time when the burner is in operation.
D. Fuel through a furnace for a set period of time when the burner is not in operation.
E. Air through a furnace for a set period of time when the burner is not in operation.
E. Air through a furnace for a set period of time when the burner is not in operation.
Before a steam or hot water boiler can be started by a programming control, all but one of the following conditions must be fulfilled:
Select one:
A. The main power switch or breaker must be closed
B. The steam pressure or water temperature must be at or below the cut-in setting of the operating control
C. The water in the boiler drum must be above the cut-off point of the low-water fuel cut-off
D. All manually operated valves in the fuel lines to the pilot and main burner must be closed
E. If the boiler is gas-fired, the fuel supply pressure to the burner valves must be above the cutout point of the low gas pressure cut-off
D. All manually operated valves in the fuel lines to the pilot and main burner must be closed
Each time the boiler starts up it has to go through:
Select one:
A. Standard checks associated with a safe startup procedure.
B. Standard checks on the water quality
C. A test of the combustion control
D. A water purge procedure
E. Standard fuel system safety checks
A. Standard checks associated with a safe startup procedure.
If the blower starts but stops again after 5-10 seconds:
Select one:
A. Check the low air pressure switch
B. Replace motor
C. Reset safety lock-out switch
D. Refer to manufacturer’s manual
E. Close the blower switch
A. Check the low air pressure switch
The switch in the operating control of a hot water boiler is closed by:
Select one:
A. Falling water pressure
B. Falling water temperature
C. Rising steam temperature
D. Rising water pressure
E. Falling steam temperature
B. Falling water temperature
The switch in the operating control of a steam boiler is opened by:
Select one:
A. Falling steam temperature
B. Falling steam pressure
C. Rising steam temperature
D. Rising steam pressure
E. Falling water pressure
D. Rising steam pressure
If the pilot burner fails to ignite, or if the pilot does go on, the gas burner fails to ignite a lockout switch will be energized after a short trial period of _____ seconds from the time of startup.
Select one:
A. 30 to 50
B. 20 to 40
C. 10 to 20
D. 15 to 30
E. 5 to 10
D. 15 to 30
If the combustion control safety lock-out switch is tripped:
Select one:
A. Refer to manufacturer’s manual
B. Check the low air pressure switch
C. Reset safety lock-out switch
D. Close the blower switch
E. Replace motor
C. Reset safety lock-out switch
If the burner fails to ignite during the ignition trial period, the lock-out switch is activated and the boiler cannot be restarted until:
Select one:
A. A short time period has passed
B. The furnace has been purged
C. The switch has been manually reset
D. The switch resets automatically
E. The fuel valve has been reset
C. The switch has been manually reset
The switch in the operating control of a hot water boiler is opened by:
Select one:
A. Rising water pressure
B. Rising water temperature
C. Falling water pressure
D. Rising steam temperature
E. Falling water temperature
B. Rising water temperature
A programming control on a natural draft gas fires boiler operates in the following sequence.
1. The main burner is ignited
2. The flame detector senses the flame and causes the main gas valve to open
3. The ignition transformer and pilot gas valve are de-energized and closed, if an interrupted pilot is used
4. The operating control initiates a startup
5. The load relay energizes the ignition transformer and the pilot gas valve
Select one:
A. 2, 5, 1, 4, 3
B. 4, 5, 2, 1, 3
C. 5, 3, 2, 1, 4
D. 1, 2, 3, 4, 5
E. 3, 2, 1, 5, 4
B. 4, 5, 2, 1, 3
What is the device used to determine that the fan motor is working:
Select one:
A. Indicator light
B. Flame scanner
C. Air flow switch
D. Motor contactor
E. Power amperage draw meter
C. Air flow switch
Purging a furnace means forcing a flow of:
Select one:
A. Fuel through a furnace for a set period of time when the burner is in operation.
B. Fuel through a furnace for a set period of time when the burner is not in operation.
C. Air through a furnace for a set period of time when the burner is in operation.
D. Air through a furnace for a set period of time when the burner is not in operation.
E. Water through a furnace for a set period of time when the burner is in operation.
D. Air through a furnace for a set period of time when the burner is not in operation.
The lock-out switch will be actuated when the:
Select one:
A. Flame scanner loses the flame
B. Power fails
C. Low water fuel cut-off opens
D. Operating control closes
E. Operating control opens
A. Flame scanner loses the flame
The two types of boiler combustion control include:
1. On-Off
2. Automatic
3. Modulating
4. Manual
Select one:
A. 3, 4
B. 1, 2
C. 2, 3
D. 1, 3
E. 2, 4
D. 1, 3
Before a steam or hot water boiler can be started by a programming control, all but one of the following conditions must be fulfilled:
Select one:
A. All manually operated valves in the fuel lines to the pilot and main burner must be closed
B. The water in the boiler drum must be above the cut-off point of the low-water fuel cut-off
C. The main power switch or breaker must be closed
D. The steam pressure or water temperature must be at or below the cut-in setting of the operating control
E. If the boiler is gas-fired, the fuel supply pressure to the burner valves must be above the cutout point of the low gas pressure cut-off
A. All manually operated valves in the fuel lines to the pilot and main burner must be closed
The switch in the operating control of a hot water boiler is closed by:
Select one:
A. Rising water pressure
B. Falling water temperature
C. Falling steam temperature
D. Falling water pressure
E. Rising steam temperature
B. Falling water temperature
The switch in the operating control of a hot water boiler is opened by:
Select one:
A. Rising water pressure
B. Rising water temperature
C. Falling water pressure
D. Falling water temperature
E. Rising steam temperature
B. Rising water temperature
The switch in the operating control of a steam boiler is closed by:
Select one:
A. Falling steam temperature
B. Falling water pressure
C. Rising steam pressure
D. Rising steam temperature
E. Falling steam pressure
E. Falling steam pressure
What is the name given to the component that coordinates and sequences the boiler operation?
Select one:
A. Plant controller
B. Boiler master
C. Air/fuel ratio controller
D. Programming controller
E. Header pressure controller
D. Programming controller
A programming control on a natural draft gas fires boiler operates in the following sequence.
1. The main burner is ignited
2. The flame detector senses the flame and causes the main gas valve to open
3. The ignition transformer and pilot gas valve are de-energized and closed, if an interrupted pilot is used
4. The operating control initiates a startup
5. The load relay energizes the ignition transformer and the pilot gas valve
Select one:
A. 3, 2, 1, 5, 4
B. 1, 2, 3, 4, 5
C. 2, 5, 1, 4, 3
D. 5, 3, 2, 1, 4
E. 4, 5, 2, 1, 3
E. 4, 5, 2, 1, 3
If the combustion control safety lock-out switch is tripped:
Select one:
A. Refer to manufacturer’s manual
B. Reset safety lock-out switch
C. Check the low air pressure switch
D. Replace motor
E. Close the blower switch
B. Reset safety lock-out switch
If the burner fails to ignite during the ignition trial period, the lock-out switch is activated and the boiler cannot be restarted until:
Select one:
A. The switch has been manually reset
B. The switch resets automatically
C. The furnace has been purged
D. A short time period has passed
E. The fuel valve has been reset
A. The switch has been manually reset
The switch in the operating control of a steam boiler is opened by:
Select one:
A. Falling water pressure
B. Falling steam temperature
C. Falling steam pressure
D. Rising steam pressure
E. Rising steam temperature
D. Rising steam pressure
*The switch in the operating control of a steam boiler is opened by:
Select one:
A. Rising steam pressure
B. Rising steam temperature
C. Falling steam pressure
D. Falling steam temperature
E. Falling water pressure
A. Rising steam pressure
*Purging a furnace means forcing a flow of:
Select one:
A. Water through a furnace for a set period of time when the burner is in operation
B. Air through a furnace for a set period of time when the burner is in operation
C. Fuel through a furnace for a set period of time when the burner is not in operation
D. Air through a furnace for a set period of time when the burner is not in operation
E. Fuel through a furnace for a set period of time when the burner is in operation
D. Air through a furnace for a set period of time when the burner is not in operation
*The switch in the operating control of a steam boiler is closed by:
Select one:
A. Falling steam pressure
B. Rising steam pressure
C. Falling water pressure
D. Rising steam pressure
E. Falling steam pressure
A. Falling steam pressure
*A programming control on a natural draft has fired boiler operates in the following sequence.
1. The main burner is ignited
2. The flame detector senses the flame and causes the main gas valve to open
3. The ignition transformer and pilot gas valve are de energized and closed, if an interrupted pilot is used
4. The operating control initiates a startup
5. The load relay energizes the ignition transformer and the pilot gas valve
Select one:
A. 5,3,2,1,4
B. 4,5,2,1,3
C. 1,2,3,4,5
D. 2,5,1,4,3
E. 3,2,1,5,4
B. 4,5,2,1,3
*The lock-out switch will be actuated when the:
Select one:
A. Low water fuel cut-off opens
B. Operating control closed
C. Operating control opens
D. Power fails
E. Flame scanner loses the flame
E. Flame scanner loses the flame
*The two types of boiler combustion control include:
1. On-Off
2. Automatic
3. Modulating
4. Manual
Select one:
A. 2,4
B. 2,3
C. 3,4
D. 1,3
E. 1,2
D. 1,3
*The programming startup sequence of oil-fired boilers with no pilot light is as follows:
1. The flame detector senses the flame and causes the flame relay to close
2. The spark from the ignition transformer ignited the main burner
3. The load relay energizes the ignition transformer, fuel oil shut-off valve, and motor driving the air fan and fuel pump
4. The ignition transformer is then de-energized
5. The operating control closed a switch
B. 5,3,2,1,4
*Each time the boiler starts up it has to go through:
Select one:
A. Standard checks on the water quality
B. A test of the combustion control
C. Standard fuel system safety checks
D. Standard checks associated with a safe startup procedure
E. A water purge procedure
D. Standard checks associated with a safe startup procedure
*What is the device used to determine that the fan motor is working:
Select one:
A. Power amperage draw meter
B. Motor contactor
C. Flame scanner
D. Air flow switch
E. Indicator light
D. Air flow switch
*The switch in the operating control of a hot water boiler is opened by:
Select one:
A. Falling water pressure
B. Falling water temperature
C. Rising waster pressure
D. Rising water temperature
E. Rising steam temperature
D. Rising water temperature
