Residential Code Study Question
A residential gas heating unit has 2. 15 sq in (R - G2407.6.1, 60,,000 = 15)
a 60,000 Btu/h input rating. What
is the minimum vertical duct
size when 2 openings to the
outside are used for
combustion and ventilation if
the unit is in space with less
than 50 Cu.Ft. per 1000 Btu of the
appliance input rationg?
1. 12 sq in
2. 15 sq in
3. 19 sq in
4. 1000 sq in
Clothes dryer transitions ducts 4. 8 (R - M1502.4.3)
shall be a maximum of
____________feet in length.
1. 1
2. 2
3. 4
4. 8
Brazing alloys used in gas piping 1. .05 (R - G2414.10.0)
systems shall not contain
more than_____________%
phosphorus.
1. .05
2. .5
3. 1
4. 2
To have the ability to access a 1. True (R - R202)
piece of equipment, which may
require the removal of a panel, is
called ACCESS
1. True
2. False
,Gas pipe shall be clear and 4. All the Above (R - G2414.7)
free from cutting burrs and
defects in structure or threading,
and shall be:
1. Thoroughly Brushed
2. Chip Blown
3. Scale Blown
4. All the Above
Residential duct systems with 2. 28 (R - Table M1601.1.1)
exposed rectangular ducts with
he largest side being 14 inch shall
be made of a minimum _____ gauge
galvanized metal.
1. 30
2. 28
3. 26
4. 24
Outdoor exhaust openings 4. 1/4 - 1/2 (R - M1506.3, R303.6)
shall be protected with
corrosion-resistant screens not
less than____inch and not
greater than
____inch.
1. 1/8 - 3/8
2. 1/8 - 1/2
3. 1/4 - 3/8
4. 1/4 - 1/2
To have direct access without the 2. Ready Access (R - R202)
need of removing any panel or
door is:
1. Access
2. Ready Access
3. Both of the Above
4. None of the Above
Copper tubing used as an oil 1. .032 (R - M2203.2)
line shall have a minimum wall
thickness of _____ inches.
1. .032
2. .034
3. .035
4. .064
The minimum chimney connector 1. 22 (R - Table M1803.2)
gauge for a residential oil
appliance with a 15 inch
connector is:
1. 22
2. 24
3. 26
4. 28
, The minimum dimension of 3. 3 (R - G2407.6)
rectangular air openings used for
combustion air shall not be less
than________inches.
1. 1
2. 2
3. 3
4. 4
A residential gas heating unit has 2. 15 sq in (R - G2407.6.1, 60,,000 = 15)
a 60,000 Btu/h input rating. What
is the minimum vertical duct
size when 2 openings to the
outside are used for
combustion and ventilation if
the unit is in space with less
than 50 Cu.Ft. per 1000 Btu of the
appliance input rationg?
1. 12 sq in
2. 15 sq in
3. 19 sq in
4. 1000 sq in
Clothes dryer transitions ducts 4. 8 (R - M1502.4.3)
shall be a maximum of
____________feet in length.
1. 1
2. 2
3. 4
4. 8
Brazing alloys used in gas piping 1. .05 (R - G2414.10.0)
systems shall not contain
more than_____________%
phosphorus.
1. .05
2. .5
3. 1
4. 2
To have the ability to access a 1. True (R - R202)
piece of equipment, which may
require the removal of a panel, is
called ACCESS
1. True
2. False
,Gas pipe shall be clear and 4. All the Above (R - G2414.7)
free from cutting burrs and
defects in structure or threading,
and shall be:
1. Thoroughly Brushed
2. Chip Blown
3. Scale Blown
4. All the Above
Residential duct systems with 2. 28 (R - Table M1601.1.1)
exposed rectangular ducts with
he largest side being 14 inch shall
be made of a minimum _____ gauge
galvanized metal.
1. 30
2. 28
3. 26
4. 24
Outdoor exhaust openings 4. 1/4 - 1/2 (R - M1506.3, R303.6)
shall be protected with
corrosion-resistant screens not
less than____inch and not
greater than
____inch.
1. 1/8 - 3/8
2. 1/8 - 1/2
3. 1/4 - 3/8
4. 1/4 - 1/2
To have direct access without the 2. Ready Access (R - R202)
need of removing any panel or
door is:
1. Access
2. Ready Access
3. Both of the Above
4. None of the Above
Copper tubing used as an oil 1. .032 (R - M2203.2)
line shall have a minimum wall
thickness of _____ inches.
1. .032
2. .034
3. .035
4. .064
The minimum chimney connector 1. 22 (R - Table M1803.2)
gauge for a residential oil
appliance with a 15 inch
connector is:
1. 22
2. 24
3. 26
4. 28
, The minimum dimension of 3. 3 (R - G2407.6)
rectangular air openings used for
combustion air shall not be less
than________inches.
1. 1
2. 2
3. 3
4. 4
