P99 LOW PRESSURE CARDS:
BOILER TRAINING EXAM QESTIONS
AND 100% CORRECT ANSWERS
If a baffle breaks, what happens?
increase of furnace gases and stack temperature
When would a high suction line be used in a fuel tank?
when there is sludge or water in the tank
____________ must be performed annually, if not, it
can cause a catastrophic event.
full boiler inspection
The science of heating and cooling with water (as the
conveying method) is called _________________.
hydronics
What is the most common cause of cast iron boiler
failure?
cracking
What is the most common cause of problems in a hot
water system?
air
A steam gauge is calibrated in ___________.
pounds per square inch
What code is a heating boiler built to?
ASME Section IV
The expansion tank in a hot water system allows for
the expansion of __________.
water
, As the water in a hot water system expands
_______________________.
the pressure remains constant
The most common type of pressure control device
used is the ________________.
Mercury tube
Heavy soot on the fireside of tubes should be
_______________________.
removed for better heat transfer
When connecting a Bourdon tube steam gauge to a
boiler, a pigtail is used to ______________.
protect the Bourdon tube from steam
What is the minimum temperature of a hot water boiler
operation to prevent condensation?
170 F
TRUE OR FALSE: The amount of draft is not affected
by the height of the stack.
false
An aquastat is sensitive to changes in _____________.
water temperature
Who can adjust a safety valve?
Manufacturer representative
What is the purpose of the pressuretrol?
turns the burner on and off
A modulating pressuretrol controls the boiler's
_____________.
high and low fire
A modulating pressure control is sensitive to
________.
pressure
A vaporstat is sensitive to _____________.
BOILER TRAINING EXAM QESTIONS
AND 100% CORRECT ANSWERS
If a baffle breaks, what happens?
increase of furnace gases and stack temperature
When would a high suction line be used in a fuel tank?
when there is sludge or water in the tank
____________ must be performed annually, if not, it
can cause a catastrophic event.
full boiler inspection
The science of heating and cooling with water (as the
conveying method) is called _________________.
hydronics
What is the most common cause of cast iron boiler
failure?
cracking
What is the most common cause of problems in a hot
water system?
air
A steam gauge is calibrated in ___________.
pounds per square inch
What code is a heating boiler built to?
ASME Section IV
The expansion tank in a hot water system allows for
the expansion of __________.
water
, As the water in a hot water system expands
_______________________.
the pressure remains constant
The most common type of pressure control device
used is the ________________.
Mercury tube
Heavy soot on the fireside of tubes should be
_______________________.
removed for better heat transfer
When connecting a Bourdon tube steam gauge to a
boiler, a pigtail is used to ______________.
protect the Bourdon tube from steam
What is the minimum temperature of a hot water boiler
operation to prevent condensation?
170 F
TRUE OR FALSE: The amount of draft is not affected
by the height of the stack.
false
An aquastat is sensitive to changes in _____________.
water temperature
Who can adjust a safety valve?
Manufacturer representative
What is the purpose of the pressuretrol?
turns the burner on and off
A modulating pressuretrol controls the boiler's
_____________.
high and low fire
A modulating pressure control is sensitive to
________.
pressure
A vaporstat is sensitive to _____________.
