HVAC Journeyman's Study Set Exam Questions
With Correct Answers
The |maximum |horizontal |length |of |a |single-wall |connector |shall |be |____ |percent |of |the |height
|of |the |chimney |or |vent.
75%
Grease |filters |shall |be |installed |at |an |angle |of |not |less |that |____ |degrees |from |the |horizontal |
and |shall |be |equipped |with |a |drip |tray |beneath |the |lower |edge |of |the |filters
45
A |device |that |will |automatically |shut |off |the |fuel |supply |to |a |main |burner |or |group |of |burners |
when |the |means |of |ignition |of |such |burners |become |inoperative, |and |when |flame |failure |
occurs |on |the |burner |or |group |of |burners.
Flame |Safeguard
Fire |dampers |shall |not |be |installed |in.
Exhaust |ducts.
Metallic |ducts |not |having |an |approved |protective |coating |shall |be |completely |encased |in |a |
minimum |of |___ |inches |of |concrete
2 |inches
An |appliance |that |operates |with |a |nonpositive |vent |static |pressure |and |with |a |vent |gas |
temperature |that |is |capable |of |causing |excessive |condensate |production |in |the |vent.
Category |2
Type |L |shall |terminate |not |less |than |two |feet |above |the |highest |point |of |the |roof |penetration |
and |not |less |than |______ |feet |higher |than |any |portion |of |a |building
2 |Feet
Duct |Linings |shall |be |interrupted |at |the |area |of |operation |of |a |fire |damper |in |at |a |minimum |of
|6 |inches |_____ |of |and |6 |inches |downstream |of |electric |resistance |and |fuel |burning |heaters |in |
a |duct |system
Upstream
,A |container |that |is |placed |at |a |low |point |in |a |system |of |piping |to |collect |condensate |and |from |
which |the |condensate |is |removable.
Drip |leg
Infrared |radiant |heaters |shall |be |_____ |in |a |position |independent |of |fuel |and |electric |supply |
lines |hangers |and |bracket |shall |be |non-combustible |material
Fixed
In |the |absence |of |MFG |information |openings |covered |with |metal |louvers |shall |be |deemed |to |
have |a |net |free |area |of |75% |of |the |area |of |the |opening, |and |openings |covered |with |____ |
louvers |shall |be |deemed |to |have |a |net |free |area |of |25% |of |the |area |of |the |opening.
Wood
Opening |sizes |in |Louver, |grilles, |and |screens |protecting |outdoor |exhaust |and |air |intake |
openings |you |would |use |which |table?
Table |401.5
A |hole |not |greater |in |diameter |than |____ |% |of |the |stud |depth |is |permitted |to |be |bored |in |any |
wood |stud.
40%
Reclaimed |refrigerants |and |used |refrigerants |shall |not |be |reused |in |a |different |owner's |
equipment |or |appliances. |Unless |test |and |meets |purity |requirements |of |_____.
ARI |700
where |multiple |air-handling |systems |share |common |supply |or |return |air |ducts |or |plenums |
with |a |combined |design |capacity |greater |than |2000 |cfm, |the |return |air |systen |shall |be |
provided |with.
Smoke |detector
The |length |of |overlap |for |overlapping |duct |joints |shall |not |exceed |___ |inches.
2 |inches
A |yellow |insulated |copper |Tracer |wire |or |other |approved |conductor |shall |be |installed |adjacent |
to |underground |non-metallic |piping |access |shall |be |provided |to |the |Tracer |wire |or |the |Tracer |
wire |shall |terminate |above |ground |at |each |end |of |the |nonmetallic |piping |the |Tracer |wire |shall |
not |be |less |than |_____ |AWG |and |the |insulation |type |shall |be |suitable |for |the |direct |burial
18 |AWG
,Excavations |are |___ |feet |in |depth |and |examination |of |the |ground |shows |no |indication |of |
potential |cave |in.
5 |feet
An |appliance |that |operates |with |a |nonpositive |vent |static |pressure |and |with |a |vent |gas |
temperature |that |avoids |excessive |condensate |production |in |the |vent.
Category |1
A |safety |valve |designed |to |forestall |the |development |of |a |dangerous |condition |by |relieving |
either |pressure, |temperature. |or |vacuum |in |hot |water |supply |system.
Relief |Valve
All |refrigerant |containing |parts |and |systems |exceeding |100 |horsepower |Drive |power |except |
evaporators |used |for |refrigeration |or |dehumidification; |condensers |used |for |heating |control |
and |pressure |valves |for |either; |and |connecting |piping, |shall |be |located |either.
Outdoors |or |in |a |machinery |room.
Connector |length. |Flexible |air |connectors |shall |be |limited |in |length |to |_____ |feet.
14 |feet
Where |all |combustion |air |and |dilution |air |is |provided |by |a |mechanical |forced |air |system |the |
combustion |air |and |dilution |air |shall |be |supplied |at |the |minimum |rate |of |1 |CFM |per |_____ |
BTU/h |of |combined |input |rating |of |all |the |fuel-burning |appliances |serve
1000
Commercial |clothes |dryers |transition |ducts |used |to |connect |the |appliance |to |the |exhaust |duct |
system |shall |be |limited |to |single |lengths |not |to |exceed |____ |feet |in |length |and |shall |be |listed |
and |labeled |for |the |application.
8 |feet
With |exposed |flame |and |burners |the |lowest |edge |of |a |grease |filter |located |above |the |cooking |
surface |shall |be |not |less |than |___ |ft |from |the |cooking |surface.
2
______ |air |is |provided |to |replace |air |being |exhausted.
Make |up
, Appliances |regulated |by |this |code |shall |be |listed |and |labeled |for |the |application |in |which |they |
are |used |funless |otherwise |approved |in |accordance |with |section |105. |the |approval |of |unlisted |
appliances |in |accordance |with |_______ |shall |be |based |upon |approved |engineering |systems.
section |105
The |test |medium |gas |piping |shall |be? |_____, |__________, |________, |or |an |________.
Air, |nitrogen |carbon |dioxide, |or |an |inert |gas.
Where |the |appliance |has |more |than |one |flue |outlet |and |in |the |absence |of |the |manufacturer's |
specific |instructions |the |connector |area |shall |not |be |less |than |the |____ |area |of |the |flue |
outlets |for |which |it |acts |as |a |common |connector.
Combined
________ |exhaust |ducts |systems |shall |extend |directly |to |the |exterior |of |the |building |and |shall |
not |extend |into |or |through |ducts |and |plenums.
Hazardous
The |minimum |unobstructed |total |area |of |the |outdoor |and |return |air |ducts |or |openings |to |a |
heat |pump |shall |be |not |less |than |______ |square |inches |per |1000 |BTU/h |our |output |rating |or |
as |indicated |by |the |conditions |of |listed |of |the |heat |pump
6 |square |inches
the |leakage |shall |be |located |by |means |of |an |improved |gas |detector |a |noncorrosive |Leak |
Detection |fluid |or |other |approved |leak |detection |methods. |Of |the |list |below |which |may |not |be
|used.
Matches
candles
Open |Flames
All |of |the |above.
all |of |the |above.
plastic |to |metal |connections |soldering |on |the |metal |portion |of |the |system |shall |be |performed |
at |least |____ |inches |away |from |a |plastic-to-metal |adapter |in |the |same |water |line.
18 |inches
Permanent |ladders |installed |to |provide |the |required |actors |shall |comply |with |the |following |
minimum |design |criteria; |Ladders |shall |have |rung |spacing |not |to |exceed |___ |inches |on |center.
With Correct Answers
The |maximum |horizontal |length |of |a |single-wall |connector |shall |be |____ |percent |of |the |height
|of |the |chimney |or |vent.
75%
Grease |filters |shall |be |installed |at |an |angle |of |not |less |that |____ |degrees |from |the |horizontal |
and |shall |be |equipped |with |a |drip |tray |beneath |the |lower |edge |of |the |filters
45
A |device |that |will |automatically |shut |off |the |fuel |supply |to |a |main |burner |or |group |of |burners |
when |the |means |of |ignition |of |such |burners |become |inoperative, |and |when |flame |failure |
occurs |on |the |burner |or |group |of |burners.
Flame |Safeguard
Fire |dampers |shall |not |be |installed |in.
Exhaust |ducts.
Metallic |ducts |not |having |an |approved |protective |coating |shall |be |completely |encased |in |a |
minimum |of |___ |inches |of |concrete
2 |inches
An |appliance |that |operates |with |a |nonpositive |vent |static |pressure |and |with |a |vent |gas |
temperature |that |is |capable |of |causing |excessive |condensate |production |in |the |vent.
Category |2
Type |L |shall |terminate |not |less |than |two |feet |above |the |highest |point |of |the |roof |penetration |
and |not |less |than |______ |feet |higher |than |any |portion |of |a |building
2 |Feet
Duct |Linings |shall |be |interrupted |at |the |area |of |operation |of |a |fire |damper |in |at |a |minimum |of
|6 |inches |_____ |of |and |6 |inches |downstream |of |electric |resistance |and |fuel |burning |heaters |in |
a |duct |system
Upstream
,A |container |that |is |placed |at |a |low |point |in |a |system |of |piping |to |collect |condensate |and |from |
which |the |condensate |is |removable.
Drip |leg
Infrared |radiant |heaters |shall |be |_____ |in |a |position |independent |of |fuel |and |electric |supply |
lines |hangers |and |bracket |shall |be |non-combustible |material
Fixed
In |the |absence |of |MFG |information |openings |covered |with |metal |louvers |shall |be |deemed |to |
have |a |net |free |area |of |75% |of |the |area |of |the |opening, |and |openings |covered |with |____ |
louvers |shall |be |deemed |to |have |a |net |free |area |of |25% |of |the |area |of |the |opening.
Wood
Opening |sizes |in |Louver, |grilles, |and |screens |protecting |outdoor |exhaust |and |air |intake |
openings |you |would |use |which |table?
Table |401.5
A |hole |not |greater |in |diameter |than |____ |% |of |the |stud |depth |is |permitted |to |be |bored |in |any |
wood |stud.
40%
Reclaimed |refrigerants |and |used |refrigerants |shall |not |be |reused |in |a |different |owner's |
equipment |or |appliances. |Unless |test |and |meets |purity |requirements |of |_____.
ARI |700
where |multiple |air-handling |systems |share |common |supply |or |return |air |ducts |or |plenums |
with |a |combined |design |capacity |greater |than |2000 |cfm, |the |return |air |systen |shall |be |
provided |with.
Smoke |detector
The |length |of |overlap |for |overlapping |duct |joints |shall |not |exceed |___ |inches.
2 |inches
A |yellow |insulated |copper |Tracer |wire |or |other |approved |conductor |shall |be |installed |adjacent |
to |underground |non-metallic |piping |access |shall |be |provided |to |the |Tracer |wire |or |the |Tracer |
wire |shall |terminate |above |ground |at |each |end |of |the |nonmetallic |piping |the |Tracer |wire |shall |
not |be |less |than |_____ |AWG |and |the |insulation |type |shall |be |suitable |for |the |direct |burial
18 |AWG
,Excavations |are |___ |feet |in |depth |and |examination |of |the |ground |shows |no |indication |of |
potential |cave |in.
5 |feet
An |appliance |that |operates |with |a |nonpositive |vent |static |pressure |and |with |a |vent |gas |
temperature |that |avoids |excessive |condensate |production |in |the |vent.
Category |1
A |safety |valve |designed |to |forestall |the |development |of |a |dangerous |condition |by |relieving |
either |pressure, |temperature. |or |vacuum |in |hot |water |supply |system.
Relief |Valve
All |refrigerant |containing |parts |and |systems |exceeding |100 |horsepower |Drive |power |except |
evaporators |used |for |refrigeration |or |dehumidification; |condensers |used |for |heating |control |
and |pressure |valves |for |either; |and |connecting |piping, |shall |be |located |either.
Outdoors |or |in |a |machinery |room.
Connector |length. |Flexible |air |connectors |shall |be |limited |in |length |to |_____ |feet.
14 |feet
Where |all |combustion |air |and |dilution |air |is |provided |by |a |mechanical |forced |air |system |the |
combustion |air |and |dilution |air |shall |be |supplied |at |the |minimum |rate |of |1 |CFM |per |_____ |
BTU/h |of |combined |input |rating |of |all |the |fuel-burning |appliances |serve
1000
Commercial |clothes |dryers |transition |ducts |used |to |connect |the |appliance |to |the |exhaust |duct |
system |shall |be |limited |to |single |lengths |not |to |exceed |____ |feet |in |length |and |shall |be |listed |
and |labeled |for |the |application.
8 |feet
With |exposed |flame |and |burners |the |lowest |edge |of |a |grease |filter |located |above |the |cooking |
surface |shall |be |not |less |than |___ |ft |from |the |cooking |surface.
2
______ |air |is |provided |to |replace |air |being |exhausted.
Make |up
, Appliances |regulated |by |this |code |shall |be |listed |and |labeled |for |the |application |in |which |they |
are |used |funless |otherwise |approved |in |accordance |with |section |105. |the |approval |of |unlisted |
appliances |in |accordance |with |_______ |shall |be |based |upon |approved |engineering |systems.
section |105
The |test |medium |gas |piping |shall |be? |_____, |__________, |________, |or |an |________.
Air, |nitrogen |carbon |dioxide, |or |an |inert |gas.
Where |the |appliance |has |more |than |one |flue |outlet |and |in |the |absence |of |the |manufacturer's |
specific |instructions |the |connector |area |shall |not |be |less |than |the |____ |area |of |the |flue |
outlets |for |which |it |acts |as |a |common |connector.
Combined
________ |exhaust |ducts |systems |shall |extend |directly |to |the |exterior |of |the |building |and |shall |
not |extend |into |or |through |ducts |and |plenums.
Hazardous
The |minimum |unobstructed |total |area |of |the |outdoor |and |return |air |ducts |or |openings |to |a |
heat |pump |shall |be |not |less |than |______ |square |inches |per |1000 |BTU/h |our |output |rating |or |
as |indicated |by |the |conditions |of |listed |of |the |heat |pump
6 |square |inches
the |leakage |shall |be |located |by |means |of |an |improved |gas |detector |a |noncorrosive |Leak |
Detection |fluid |or |other |approved |leak |detection |methods. |Of |the |list |below |which |may |not |be
|used.
Matches
candles
Open |Flames
All |of |the |above.
all |of |the |above.
plastic |to |metal |connections |soldering |on |the |metal |portion |of |the |system |shall |be |performed |
at |least |____ |inches |away |from |a |plastic-to-metal |adapter |in |the |same |water |line.
18 |inches
Permanent |ladders |installed |to |provide |the |required |actors |shall |comply |with |the |following |
minimum |design |criteria; |Ladders |shall |have |rung |spacing |not |to |exceed |___ |inches |on |center.
