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2012 IPC > Chapter 5 Water Heaters > Flashcards

Chapter 5 Water Heaters Flashcards

1
Q

What is not required as part of a water heater installation?

A

a means to provide continous circulation

There is provision in the code for continuos circulation

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2
Q

What is required to be installed in the cold water line feeding a bottom feeded water heater?

A

Vacuum relief valve

504.2

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3
Q

Unless the tanks working pressure is less, What is maximum pressure settings for a T&P valve?

A

150PSI

504.5

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4
Q

What is the minimum required level working space on the control side of a water heater?

A

30” x 30”

502.5

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5
Q

The maximum temperture setting of a T & P relief valve?

A

210 degrees

504.5

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6
Q

A storage tank-type water heater is required to be installed in a pan when?

A

installed in an attic

504.7 amended

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7
Q

The drain pipe of a water heater pan shall not be less than?

A

3/4 “

504.7.1

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8
Q

The relieving capacity of a temperature relief valve shall not be less than ?

A

heat input of the heater

504.5

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9
Q

Galvanized steel drainpans for water heater must fabricated of not less than what gauge metal?

A

24

504.7

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10
Q

The maximum allowable water temperature from a tankless-type water heater intended for domestic use is?

A

140 degree

501.6

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11
Q

What is the minimum access opening for water heaters installed in attics?

A

20” x 30”

502.3

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12
Q

An electric water heater requires what safety feature that a gas water heater doen’t?

A

A means of disconnecting the power supply

504.3

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13
Q

What are the requirements for a water heater pan size?

A

1 1/2” deep & large enough to catch all the drippings & condensate from the heater

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14
Q

Temperture relief valves shall be so located in what part of the water heater?

A

In the top 6” of the tank

504.4.1

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15
Q

A water heater shall be located not more than how many feet from the attic access?

A

20 feet

502.3

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16
Q

How wide should the continuous solid flooring passageway to a water heater in an attic be?

A

24” wide

502.3

17
Q

There are many requiremnets for the relief valve piping from a water heater. Name four.

A
  1. indirect drain connection through air gap
  2. not be reduced in size from the valve opening
  3. not connected to another relief valve drain
  4. discharge to the floor, outdoors or to the drain pan serving the heater
  5. discharge in a manner that doesn’t cause harm
  6. be readily observable
  7. not be trapped
  8. flow by gravity
  9. not terminate more than 6” above the flooror waste receptor
  10. no threads at the end of the piping
  11. no valves or tee fittings
  12. be constructed of appoved water pipe materials
18
Q

All water heaters shall have what type of certification?

A

third party certification like UL

501.5

19
Q

When using a shower, the hot water turns luke warm after a short period of time . The water heater is electric . What is the probable cause?

A

The lower element is bad.

General Knowledge

20
Q

How many BTU’s does it take to raise the temperature of 40 gallons of water 10 degrees?

A

8.33(gallon of water weight) x 40 ( gallons of water) x 10( degrees)= 3332 BTU

One BTU is required to raise the temperture of one pound of water one degree farenheit

21
Q

What specification of a water heater require it to be inspected by the State Fire Marshall?

A

200,000 BTU/h, 210 degree & 120 gallon tank

501.9 Amended

22
Q

When a gas water heater has a bad thermocouple , what part of the gas system will not function properly.

A

The pilot light will not remain lite.

General Knowledge

23
Q

What are the valve requirements for the water line sevring a water heater or hot water storage tank?

A

It shall be near the equipment , accessible & only serve the one water heater or hot water storgae tank

503.1

24
Q

All Storage tank & water heaters for domestic hot water shall have what infomation clearly visible & permanently attached to the tank?

A

maximum allowable working pressure

501.7

25
Q

You have a top feeded water heater and the hot water is only hot for a few seconds what is the probable cause?

A

a broken drip tube

General Knowledge

2012 IPC (6 decks)

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