Water Supply, Distribution and Heaters Flashcards

Understand the installation, maintenance, and regulations of water heaters, along with water supply distribution systems and best practices. (35 cards)

1
Q

True or False:

When an existing metal pipe is used for electrical grounding, that pipe can be replaced with plastic, and the grounding may be left disconnected.

A

False

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2
Q

What is not considered an option for an individual water supply?

A

surface water

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3
Q

Fill in the blank:

Where pumps for individual water supply are installed in basements, the pump must be mounted not less than ______ inches above the floor.

A

18 inches

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4
Q

Fill in the blank:

The required horizontal separation distance for a water service pipe from a building sewer shall not apply if the water service pipe is a minimum of ______ inches above the building sewer.

A

12

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5
Q

What is the minimum flow rate in gallons per minute for a private lavatory?

A

0.8

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6
Q

What is the minimum flow pressure in psi for a bathtub?

A

20

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7
Q

What is the maximum flow rate for a water closet per flush cycle?

A

1.6 gpm

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8
Q

What is the maximum static water pressure to be allowed within the building?

A

80 psi

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9
Q

What is the minimum fixture water supply pipe size for a bathtub?

A

1/2 inch

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10
Q

Fill in the blank:

A water hammer arrestor shall be installed where ______ valves are utilized.

A

quick-closing

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11
Q

Fill in the blank:

______ shall be provided to all flexible water connectors.

A

Access

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12
Q

Where is a full-open valve not required?

A

fixture supply

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13
Q

Fill in the blank:

Overflow outlets for water supply tanks shall discharge to a point not less than ______ inches above the roof.

A

6

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14
Q

What is the drain pipe diameter for a water supply tank with a tank capacity of 1600 gallons?

A

2 inches

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15
Q

Fill in the blank:

A thermal expansion control device is to connect to the water heater ______ pipe.

A

cold water supply

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16
Q

Which device is not to be installed for high hazard backflow situations?

A

dual-check-valve

17
Q

Fill in the blank:

A water softener drain connection shall be connected to the waste system through ______.

18
Q

What is not an approved method for protecting a backflow preventer from freezing?

A

installed below ground

19
Q

What is not an approved method for protecting the potable water supply in a lawn irrigation system?

20
Q

When disinfecting a potable water system with a chlorine concentration of 50 PPM, how long shall the chlorine stand in the system?

21
Q

When potable water is being used to heat space, what is the maximum temperature of the hot water allowed to be supplied at the potable water fixtures?

A

140 degrees F

22
Q

True or False:

A water heater drain valve is required to be provided with female garden hose threads.

23
Q

True or False:

Water heaters and storage tanks should be positioned so that the markings on the tank can be accessed for inspection or reinspection.

24
Q

Fill in the blank:

When installed in an attic, water heaters shall be provided with a passageway not less than ______ inches in height.

25
# Fill in the blank: When installed in an attic, water heaters shall be provided with a passageway with a continuous solid floor not less than \_\_\_\_\_\_ inches in width.
24
26
# Fill in the blank: All water heaters shall be provided with a level working space not less than \_\_\_\_\_\_ inches in length and width in front of the control side of the water heater.
30
27
# Fill in the blank: Access to the cold water valve for a water heater shall be \_\_\_\_\_\_.
on the same floor level
28
# True or False: A pressure relief valve is an approved means for controlling thermal expansion.
False
29
What is the maximum temperature setting for a temperature and pressure relief valve on a water heater?
210 degrees F
30
# True or False: The discharge pipe serving a temperature and pressure relief valve shall not be smaller than the diameter of the outlet of the valve served.
True
31
# Fill in the blank: The discharge pipe for a temperature and pressure relief valve serving a water heater shall terminate not more than \_\_\_\_\_\_ inches from the floor.
6
32
# True or False: A plastic pan may be installed beneath a gas-fired water heater.
False
33
# True or False: Where a pan drain was not previously installed, a pan shall not be required for a replacement water heater installation.
True
34
# Fill in the blank: The termination of a drain from a water heater pan shall not be more than \_\_\_\_\_\_ inches above the place of termination.
24 inches
35
What is the insulation **R-value** requirement for unfired hot water storage tanks?
R 12.5