Deck 15: Plumbing Codes: Water Heaters

Question 1

What is the first step in performing a draft test?

A)make sure all exterior doors and windows are closed
B)turn on all gas-fired appliances
C)shut off gas lines
D)turn on any appliances and open or close any interior door that may produce negative pressure

Answer 1

A

Question 2

What standards do both the IPC and UPC reference when discussing combustion air for fuel-burning appliances?

A)ASSE standards
B)NFPA standards
C)ANSI standards
D)ISEA standards

Answer 2

B

Question 3

Which of the following is NOT a step to be taken when performing a draft test?

A)make sure all exterior doors and windows are closed
B)turn on all gas-fired appliances
C)shut off gas lines
D)turn on any appliances and open or close any interior door that may produce negative pressure

Answer 3

C

Question 4

Both the IPC and UPC address water heaters in Chapter 5.

Question 5

Regarding water heaters, how do the IPC and UPC differ?

A)UPC additionally focuses on combustion air, venting, and water heater sizes
B)UPC limits discussion to water heater location, and installation
C)IPC limits discussion to combustion air, venting, and water heater sizes
D)IPC additionally focuses on combustion air, venting, and water heater sizes

Question 6

To meet code, water heater drainage pans must be corrosion-resistant, and not less than how much in depth?

A)2.5 inches
B)1 inch
C)1.5 inches
D)2 inches

Question 7

Which of the following is NOT true about piping when considering relief valve performance?

A)it should be capable of serving multiple relief devices
B)it should not be directly connected to a drainage system
C)it should discharge to the floor, pan serving the water heater, storage tank, or outdoors
D)it should not be trapped, in the case of discharge piping

Question 8

During a draft test, it is important that the carbon monoxide level does not exceed:

A)40 ppm
B)45 ppm
C)30 ppm
D)35 ppm

Question 9

According to the 2015 IPC, in order for a relief valve to perform as intended, the piping must:

A)be trapped
B)serve multiple relief devices
C)be smaller than the diameter of the outlet of the valve served
D)not be trapped

Question 10

According to code, the temperature and pressure rating for hot water storage tanks shall not exceed what temperature and psi?

A)150 ° F, 210 psi
B)210 ° F, 150 psi
C)180 ° F, 170 psi
D)170 ° F, 180 psi

Question 11

According to IPC, what is the maximum water temperature delivered to the potable water system?

A)140 ° F
B)120 ° F
C)150 ° F
D)110 ° F

Question 12

When using the standard method to determine if indoor air can be used for combustion, how many cubic feet of room volume for every 1000 Btu/h firing rate of equipment must there be, minimally?

A)100
B)75
C)50
D)125

Question 13

Step one in a draft test is to turn on all gas-fired appliances in the equipment room.

Question 14

According to IPC and UPC codes, water heaters must never be installed in an attic.

Question 15

If the air changes per hour (ACH)are known to be less than 0.40, what method should a technician use to determine if indoor air can be used as combustion air?

A)standard method
B)known air-infiltration rate
C)cohesion method
D)combustion method