JOURNEYMAN'S TEST QUESTIONS
AND ANSWERS
When using an analog ohm meter if the needle goes down to zero and then back up to the other end
the cap Is what ✅✅correct answ-Good
When is insulation needed ✅✅correct answ-When supply duct passes through an unconditioned
space
Safety relief piping on boilers should be of what type ✅✅correct answ-Rigid pipe
Rooftop duct insulation grade commercial applications ✅✅correct answ-R-8
An 8 inch exhaust must penetrate a roof at least ✅✅correct answ-2.5 inches
What is a flat bonnet on a wood curb meant for ✅✅correct answ-Multiple vents
Minimum width unobstructed provided for all sides of a boiler ✅✅correct answ-18 inches
When only horizontal ducts are used and all the combustion air is taken from the outside, grate
opening shall be size based on how many BTUs hour ✅✅correct answ-2000 BTUs an hour /
vertical 4000 BTUs an hour
Improper use of suction filter dryer may cause ✅✅correct answ-Restriction of flow
What do you never cut off in a mechanical room ✅✅correct answ-Ventilation exhaust
What is the temperature a T-Stat will go on if a space under the house is used as an open plenum on
heating systems ✅✅correct answ-265°
What is not an acceptable flange gasket material ✅✅correct answ-Bronze
, Approved method of scavenging a chimney, boiler or passageways in boiler ✅✅correct answ-
Purging
If insulation is doubled the transferred through the insulation does what ✅✅correct answ-Reduce
by half
The unthreaded portion of piping outlets shall extend not more than how many inches through
finished ceiling ✅✅correct answ-1 inch
Refrigeration system with more than 6.6 pounds of refrigerant will NOT have a stop valve where
✅✅correct answ-Inlet of the receiver
Type II hood shall be constructed of what ✅✅correct answ-Copper sheet weight not less than 24
ounces per square foot
Boilers without manholes must have what clearance from the ceiling ✅✅correct answ-2 feet
What equipment must be shut off once it reaches a max temperature of 200°F ✅✅correct answ-
Water heater
Width of mechanical door should be what ✅✅correct answ-36 inches
A gas fired boiler should have an approved manual shut off valve located where ✅✅correct answ-
Upstream of main control valve
Piping to a main burner must have a union where ✅✅correct answ-Downstream of Manuel shut
off 6 feet from the boiler
Support piping from a bend in the piping from a compressor discharge must be at ✅✅correct
answ-6 feet
Appliances in a dwelling unit installed in compartment above ceiling or in basement shall be
provided with a door or passageway measuring no less than ✅✅correct answ-24 inches
AND ANSWERS
When using an analog ohm meter if the needle goes down to zero and then back up to the other end
the cap Is what ✅✅correct answ-Good
When is insulation needed ✅✅correct answ-When supply duct passes through an unconditioned
space
Safety relief piping on boilers should be of what type ✅✅correct answ-Rigid pipe
Rooftop duct insulation grade commercial applications ✅✅correct answ-R-8
An 8 inch exhaust must penetrate a roof at least ✅✅correct answ-2.5 inches
What is a flat bonnet on a wood curb meant for ✅✅correct answ-Multiple vents
Minimum width unobstructed provided for all sides of a boiler ✅✅correct answ-18 inches
When only horizontal ducts are used and all the combustion air is taken from the outside, grate
opening shall be size based on how many BTUs hour ✅✅correct answ-2000 BTUs an hour /
vertical 4000 BTUs an hour
Improper use of suction filter dryer may cause ✅✅correct answ-Restriction of flow
What do you never cut off in a mechanical room ✅✅correct answ-Ventilation exhaust
What is the temperature a T-Stat will go on if a space under the house is used as an open plenum on
heating systems ✅✅correct answ-265°
What is not an acceptable flange gasket material ✅✅correct answ-Bronze
, Approved method of scavenging a chimney, boiler or passageways in boiler ✅✅correct answ-
Purging
If insulation is doubled the transferred through the insulation does what ✅✅correct answ-Reduce
by half
The unthreaded portion of piping outlets shall extend not more than how many inches through
finished ceiling ✅✅correct answ-1 inch
Refrigeration system with more than 6.6 pounds of refrigerant will NOT have a stop valve where
✅✅correct answ-Inlet of the receiver
Type II hood shall be constructed of what ✅✅correct answ-Copper sheet weight not less than 24
ounces per square foot
Boilers without manholes must have what clearance from the ceiling ✅✅correct answ-2 feet
What equipment must be shut off once it reaches a max temperature of 200°F ✅✅correct answ-
Water heater
Width of mechanical door should be what ✅✅correct answ-36 inches
A gas fired boiler should have an approved manual shut off valve located where ✅✅correct answ-
Upstream of main control valve
Piping to a main burner must have a union where ✅✅correct answ-Downstream of Manuel shut
off 6 feet from the boiler
Support piping from a bend in the piping from a compressor discharge must be at ✅✅correct
answ-6 feet
Appliances in a dwelling unit installed in compartment above ceiling or in basement shall be
provided with a door or passageway measuring no less than ✅✅correct answ-24 inches
