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

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

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

Chapter 5

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