OIL BURNER'S TEST QUESTIONS WITH
200 SETS AND CORRCECT ANSWERS
RATED A+
What is used to prevent gravity circulation through the system when the boiler maintains
temperature
Flow control valve
Turbulators in the tubes of a fire tube boiler:
Increase efficiency
In a forced warm air system, the return air duct size should never be less than ____ of
the supply air duct size.
100%
On a cold day, the burner is cycling on and off, the flame is sufficient but the complaint
of insufficien1 heat may be caused by
•Faulty or improperly set high limit
•.Thermostat set in the wrong location
• Boiler or furnace too small
Short cycling of the burner can be caused by
•The heat anticipator not set properly
• High limit set too low
. Oversized equipment
The proper location for the vacuum gauge when testing a fuel unit and supply line is
•A suction port
One reason oil would drip from the nozzle after the burner shuts down is
•A faulty fuel unit cut-off
On a burner that has been properly set up and adjusted, yet will experience an
occasional hard start or puff back, the problem may be
The nozzle is too large
Off-cycle heat losses include
Chimney draft and Jacket loss
By replacing an old burner with a new retention head burner, off-cycle losses are
reduced because
It restricts the draft induced air flow through the burner
A simple, effective, yet inexpensive way to increase on-cycle system efficiency is to
Match the nozzle to the heating load
The _ are important for both on and off cycle efficiency in a fire tube boiler
Limit Controls
Before lowering the temperature of a hot water boiler, consideration must be given to
the
Design of the heating
The boiler or furnace is not the only source of heat loss. The heating system can lose
heat through
, •insulated steam pipes
• Un-insulated hot water pipes
• Un-insulated warm air ducts
A condition often overlooked on a call involving odors is
Un-insulated warm air ducts
To test a cad cell eye, you need a
Ohmmeter
When testing a fuel unit cut-off, the pressure at the nozzle port should
Drop and hold at 80%
Power venters that are installed inside the structure should be
Mounted as close to the outside as possible
When the installation instructions call for a draft regulator with a power vent system, it
should be installed
•a. Between the boiler or furnace and the power venter
When running warm air trunk lines or branches through such areas as crawl spaces,
garages or attics the duct work must be
insulated
When running warm air trunk lines or branches through such areas as crawl spaces,
garages or attics the duct work must be:
Direct supply, direct return
When using a ____ heater, it is necessary to maintain sufficient boiler water
temperature to heat the domestic hot water
Skim the boiler through a nipple at the water level after a few days of operation
A reverse acting aquastat is used in a hydronic system to
Stop the circulator when the water temperature falls below a preset temperature
Burner air fans are manufactured to very close tolerances because an unbalanced fan
can
•Put a strain on motor bearings
• Create vibrations
When wiring a burner for intermittent ignition using a stack type primary control the
transformer is wired to terminals 2 and
4
Which substance offers the most resistance to the flow of electricity
Carbon
Which substance offers the most resistance to the flow of electricity
Allow it to warm to room temperature and zero out the the scale
Original
In an electric circuit for the wattage to remain the same if the voltage drops, the
amperage must
Increase
Atomizing type burners were designed to burn which type of fuel
Type 2 fuel oil
Pour point problems with outside above ground fuel tanks can be partially relieved by
Reducing the pour point of No. 2 fuel oil by blending it with No. 1 fuel oil.
A fuel oil storage tank cannot be installed
In the furnace room with 5' of heating unit.
200 SETS AND CORRCECT ANSWERS
RATED A+
What is used to prevent gravity circulation through the system when the boiler maintains
temperature
Flow control valve
Turbulators in the tubes of a fire tube boiler:
Increase efficiency
In a forced warm air system, the return air duct size should never be less than ____ of
the supply air duct size.
100%
On a cold day, the burner is cycling on and off, the flame is sufficient but the complaint
of insufficien1 heat may be caused by
•Faulty or improperly set high limit
•.Thermostat set in the wrong location
• Boiler or furnace too small
Short cycling of the burner can be caused by
•The heat anticipator not set properly
• High limit set too low
. Oversized equipment
The proper location for the vacuum gauge when testing a fuel unit and supply line is
•A suction port
One reason oil would drip from the nozzle after the burner shuts down is
•A faulty fuel unit cut-off
On a burner that has been properly set up and adjusted, yet will experience an
occasional hard start or puff back, the problem may be
The nozzle is too large
Off-cycle heat losses include
Chimney draft and Jacket loss
By replacing an old burner with a new retention head burner, off-cycle losses are
reduced because
It restricts the draft induced air flow through the burner
A simple, effective, yet inexpensive way to increase on-cycle system efficiency is to
Match the nozzle to the heating load
The _ are important for both on and off cycle efficiency in a fire tube boiler
Limit Controls
Before lowering the temperature of a hot water boiler, consideration must be given to
the
Design of the heating
The boiler or furnace is not the only source of heat loss. The heating system can lose
heat through
, •insulated steam pipes
• Un-insulated hot water pipes
• Un-insulated warm air ducts
A condition often overlooked on a call involving odors is
Un-insulated warm air ducts
To test a cad cell eye, you need a
Ohmmeter
When testing a fuel unit cut-off, the pressure at the nozzle port should
Drop and hold at 80%
Power venters that are installed inside the structure should be
Mounted as close to the outside as possible
When the installation instructions call for a draft regulator with a power vent system, it
should be installed
•a. Between the boiler or furnace and the power venter
When running warm air trunk lines or branches through such areas as crawl spaces,
garages or attics the duct work must be
insulated
When running warm air trunk lines or branches through such areas as crawl spaces,
garages or attics the duct work must be:
Direct supply, direct return
When using a ____ heater, it is necessary to maintain sufficient boiler water
temperature to heat the domestic hot water
Skim the boiler through a nipple at the water level after a few days of operation
A reverse acting aquastat is used in a hydronic system to
Stop the circulator when the water temperature falls below a preset temperature
Burner air fans are manufactured to very close tolerances because an unbalanced fan
can
•Put a strain on motor bearings
• Create vibrations
When wiring a burner for intermittent ignition using a stack type primary control the
transformer is wired to terminals 2 and
4
Which substance offers the most resistance to the flow of electricity
Carbon
Which substance offers the most resistance to the flow of electricity
Allow it to warm to room temperature and zero out the the scale
Original
In an electric circuit for the wattage to remain the same if the voltage drops, the
amperage must
Increase
Atomizing type burners were designed to burn which type of fuel
Type 2 fuel oil
Pour point problems with outside above ground fuel tanks can be partially relieved by
Reducing the pour point of No. 2 fuel oil by blending it with No. 1 fuel oil.
A fuel oil storage tank cannot be installed
In the furnace room with 5' of heating unit.
