Chapter 5

Walls, Floors, Ceilings, shelves or other parts of a building constructed of wood, wood lath, and plaster, composition or paper defines:
A structure
A dwelling
Building materials
Combustible materials
Listed factory-made pipe and fittings for conveing products of combustions to the outside atmosphere defines:
An opening to the outside
A vent connector
A masonry chimney
A vent
An appliance designed primarly to supply hot water and is equipped with automatic controls liming water temperature to a maximum of two hundred ten degrees is a:
Furnace
Boiler
Water heater
Steam boiler
In a building of unusually tight construction, combustion air shall:
Be obtained from the inside
Not be required
Be obtained for the outside
Be calculated at 3" per 1000 Btuh
Combustion air openings shall:
Be located within the top 12" on the enclosure
Terminated to the outside
Be located within the bottom 12" of the enclosure
A and C
Water heaters that depend on the combustion of fuel shall not be located in a
Room designed for sleeping purposes
Bath or bedroom
Clothes closet or in a closet or confined space opening into a bath or bedroom
All the above
Electric water heaters may be installed in a garage provided:
The bottom of the water heater is at least 18" above the floor level
Adequate combustion air is supplied from the exteriro
Only if it is a direct vent water heater
The element of switch is at least 18" above the floor level
Water heaters more than______above the floor level shall be made accessible by stairway or ladder permanently attached to the building
8 in.
18 in.
6 ft.
5 ft.
 
 
Venting Systems shall be designed and constructed:
To develop a positive flow
Of welded venting material
Complete with dampers
Without offset
On a roof of 4/12, the vent shall terminate:
A maimum of 1' above the roof
A minimum of 1' above the roof
At least 2' above the roof
At least 2 times the diameter of the vent above the roof
The T & P line shall extend for the valve to the outside of the building:
Undiminished in size as established by the valve outlet
When the water heater is located in the attic
When a water heater pan is not required
When the T & P valve is required
The T & P line shall terminate ____ above grade.
At least 12" and not more than 18"
At least 24" and not more than 30"
At least 6" and not more than 12"
At least 6" and not more than 24"
Each pressure relief valve shall be set at a pressure not more than:
210 psi
150 psi
125 psi
110 psi
A___ shall be installed on the cold water supply at or near the water heater
Single check valve
Strainer
Angle stop
Full way valve
Single wall metal vent connectors, where permitted, shall be provided with ______ clearance from combustibles
1 in.
6 in.
9 in.
12 in.
A single wall vent connector shall not originate in a/an:
Unoccupied attic
Concealed space
Kitchen
A & B
Vent connectors of natural draft appliances___connected to the mechanical systems operating under positive pressure
May be
Shall not be
Must be
May be interlocked and then
A water heater may use plastic pipe for its venting systems if it is listed as a:
Condenising water heater
Low temperature water heater
High recovery water heater
None of the above
Discharge from a relief valve into a water hater pan is:
Approved by code
Permissible if the pan has a 3/4 pipe drain to an pproved location
Prohibited
A & B
Two gas-fired water heaters with a 3 in. Vent outlet on each water heater are c ent system. What is the minimum size of the common vent
3 in.
4 in.
5 in.
6 in.
 
Water heaters wich depend on combustion air may be installed in a
Bathroom
Bedroom
Garage
Clothes closet
A final water heater inspection shall be made only after:
All plumbing fixtures have been installed
All gas appliances have been installed
All work authorized by the permit has been installed
The plumber has left the job
Water heaters supported from the ground must be on
Firewood blocks
Redwood blocks
A concrete base
Pressure treated wood
Both openings for combustion air shall
Serve a single enclosure
Equal the size of the water heater vent
Be at least ten square inches
Be located within twelve inces of the appliance
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