2015 UPC Chapter 5 Water Heaters

2015 UPC Chapter 5 Water Heaters

RV 4/13/16

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1

2015 UPC Chapter 5 Water Heaters

RV 4/13/16

Quiz 1

1. Size the water heater for a house with 3 bathrooms and 4 bedrooms.

• 42
• 54
• 67
• 80

1. Size the water heater for a house with 1 bathroom and 3 bedrooms.

• 42
• 54
• 67
• 80

1. Size the water heater for a house with 2 bathrooms and 5 bedrooms.

• 42
• 54
• 67
• 80

1. Size the water heater for a house with 3 bathrooms and 6 bedrooms.

• 42
• 54
• 67
• 80

1. Size the water heater for a house with 1 bathroom and 2 bedrooms.

• 42
• 54
• 67
• 80

1. Size the water heater for a house with 1-1/2 bathrooms and 3 bedrooms.

• 42
• 54
• 67
• 80

1. Size the water heater for a house with 2 bathrooms and 3 bedrooms.

• 42
• 54
• 67
• 80

1. No water heater shall be hereafter installed that does not comply with the type and model of each size thereof approved by the Authority Having Jurisdiction.

• True
• False

1. Which activities can be performed on a water heater without a permit?

• Maintenance
• Installation
• Removal
• Replacement

1. An inspection of a chimney or vents must be made before the vents or their parts are covered or concealed.

• Yes
• No

1. When must a final water heater inspection be made by the AHJ?

• When the work authorized by the permit is installed.
• When the installation has been installed to code.
• Prior to covering or concealing any of the work.
• All of the answers provided.

1. A water heater installed in a bedroom must meet which of the following requirements?

• Be located in a closet exclusively for the use of the water heater.
• The closet must have a combustion air vent obtaining air from outside.
• Must have self-closing hinges on the door.
• Must have gaskets around the entire door.
• All of the answers provided.

1. It is permissible to install a B-vent style water heater in a bathroom if it is installed in the linen/towel closet and is not visible.

• True
• False

1. A water heater installed in a bathroom must have a self-closing door that ______and shall be equipped with a self-closing hinge to make the door close and latch each time it is opened.

• easily swings
• freely swings
• both of the answers provided
• neither of the answers provided

1. A water heater that is installed in a bathroom with self-closing hinges shall not include a hold-on feature.

• True
• False

1. A water heater must be located as close as practical to a chimney or gas vent.

• True
• False

1. A water heater’s clearance shall not be such as to interfere with combustion air, draft hood clearance, and accessibility for servicing.

• True
• False

1. Listed water heaters are NOT always required to be installed in accordance with their manufacturer’s installation instructions.

• True
• False

1. All unlisted water heaters shall be installed with a clearance of at least ______on all sides and rear.

• 6 inches
• 8 inches
• 10 inches
• 12 inches

1. When combustible floors are under an unlisted water heater, it shall be protected in the approved manner.

• True
• False

1. All water heater installations are to be provided with overpressure protection by means of an approved listed device.

• True
• False

1. Only unlisted water heater installations shall be provided with over temperature protection.

• True
• False

1. Installation of temperature, pressure, and vacuum relief devices and automatic gas shutoff devices, shall be in accordance with the terms of their listings and NOT the manufacturer’s installation instructions.

• True
• False

1. It is permissible to install a shutoff valve between the relief valve’s discharge pipe and the atmosphere.

• Yes
• No

1. It is permitted to put a valve or any device of any kind on the path of the discharge pipe of the safety valve.

• True
• False

1. The hourly British thermal units (Btu) discharge capacity or the rated steam relief capacity of the pressure relief device shall NOT be less than the input rating of the water heater.

• True
• False

Quiz 2

1. All water heaters deriving heat from fuels or other types of energy may be constructed and installed with the approved standards.

• True
• False

1. An adequate supply of air for combustion, ventilation of heater rooms, and compartments shall not be provided for oil-burning water heaters.

• True
• False

1. Prior to installation of an oil-burning water heater, the AJH must approve its location.

• True
• False

1. The reference code for an oil-fired water heater is ______.

• Uniform Mechanical Code
• 2012 UPC
• NFPA 31
• Flue Gas Code

1. An indirect-fired water heater must conform to the following code:

• ASME Boiler and Pressure Vessel Code
• Uniform Mechanical Code
• 2012 UPC
• NFPA 31

1. Each indirect-fired water heater shall have a label that meets ______requirements.

• UPC
• UMC
• ASHREA
• ASME
• RSES

1. Each indirect-fire water heater shall have a label showing that that the appliance has ______in accordance with ASME requirements.

• been tested
• been inspected
• met the code
• all of the answers provided

1. The heat transfer medium for an indirect-fired water heater is potable water or a fluid with a toxicity rating of ______.

• Class of 1
• Class of 2
• Class of 3
• Non-Classified

1. A label for an indirect-fired water heater will bear the word ______at the top.

• DANGER
• STOP
• CAUTION
• NON POTABLE WATER

1. The Authority Having Jurisdiction always requires the use of an approved dielectric insulator on the water piping connections of water heaters and related water heating appliances.

• True
• False

1. In seismic design Category F, water heaters are not required to be anchored or strapped.

• True
• False

1. Upon installation, a water heater shall be strapped at points within its upper one-third and lower one-third areas.

• True
• False

1. At the lower strapping point of a water heater, the strapping shall be at a minimum distance of 4 inches above the controls.

• True

• False

1. For additional safety, earthquake valves are required on either the inlet or outlet of a gas meter.

• True
• False

1. A water heater supported from the ground shall rest on level concrete or other approved base with a height of at least ______above the surrounding ground level.

• 1 inch
• 2 inches
• 3 inches
• 4 inches
• 5 inches

1. When a water heater is located in an attic, where damage may result from a leak, a watertight pan without a drain shall be installed beneath the water heater.

• True
• False

1. A discharge pipe from a pressure relief valve is permitted to discharge into the water heater drip pan.

• True
• False

1. Where a water heater needs replacing, the location before installation must be checked for the following:

• air combustion
• clearance
• venting
• all of the answers provided
• none of the answers provided

1. A non-direct-ventappliance installed in a beauty shop that uses flammable aerosol sprays shall be located in a separate equipment room that has outside combustion and dilution air.

• True
• False

1. Process air shall be provided for comfort and proper working conditions for personnel.

• True
• False

1. Open flame gas water heaters are allowed near facilities that transmit flammable vapors.

• True
• False

1. A gas furnace or water heater in a garage, separate from the living space, shall be installed so that all burners and the ignition system are at least ______above the floor, unless the appliance is listed as flammable vapor ignition resistant.

• 12 inches
• 16 inches
• 18 inches
• 24 inches
• 28 inches

1. Installation of a water heater in a garage is permitted when it is installed at the proper height and is protected against damage by a moving vehicle.

• Yes
• No

Quiz 3

1. When is the Installation of a water heater (non-flammable vapor ignition resistant type) at floor level in a residential garage permitted?

• Never.
• Only when the garage is used for storage and not for parking cars.
• When it is located in a separate room, not accessible from the garage with air supply outside the garage.
• Anytime.

1. When installing appliances in an underground parking facility, what code needs to be followed?

• NFPA 31
• NFPA 62
• NFPA 88A
• Mechanical Code

1. When is an appliance allowed in a repair garage?

• Never
• When it is located in a detached room with 1-hour fire wall.
• Anytime
• Within regulations

1. In a repair garage, a heater is permitted to be installed if it is at least ______above the floor.

• 8 feet
• 10 feet
• 12 feet
• None – there are no exceptions

1. When transferring flammable liquids in a repair garage, a heater will be permitted to be installed by the following code:

• NFPA 409
• NFPA 31
• NFPA 88A
• this is incorrect – heaters are prohibited to be installed if flammable liquids are transferred

1. Appliances installed in an Aircraft Hanger must conform to the following code:

• NFPA 409
• NFPA 31
• NFPA 65
• NFPA 88A

1. When the gas supply pressure is higher than that at which the appliance is designed to operate, a gas pressure regulator is permitted to be installed.

• True
• False

1. A combination of water heaters when used together shall be installed with the standard that applies to an individual unit.

• True
• False

1. By code, which of the following must be left at the job site by the installation crew upon completing a water heater installation?

• The manufacturer’s installation instructions.
• The phone number of the installation company.
• A copy of the invoice.
• Business cards for the installation company.

1. Can indoor equipment be installed outdoors?

• Never
• Yes
• Maybe, if special protection is furnished for the equipment.

1. Installing appliances on roof tops shall be designed and enclosed correctly to withstand any type of climate condition.

• True
• False

1. On rooftops, the minimum clearance between a service panel and the wall of the enclosure is ______.

• 16 inches
• 24 inches
• 30 inches
• 36 inches
• 48 inches

1. When constructing a roof for appliances to be installed on, the roof will need to be capable of supporting the load capacity of the appliances.

• True
• False

1. ______shall be of corrosion-resistant material.

• Access locks
• Screws
• Bolts
• All of the answers provided
• None of the answers provided

1. At least ______of clearance shall be available between any part of the equipment and appliance and the edge of a roof, or shall have guardrails at least 42 inches high.

• 3 feet
• 6 feet
• 8 feet
• 10 feet
• 12 feet

1. On a roof top, the electrical disconnect must be ______.

• readily accessible
• within sight
• both of the answers provided
• neither of the answers provided

1. Any roof top appliance must be supplied with a 120-VAC grounded-type receptacle

• True
• False

1. The receptacle outlet shall be on the supply side of the disconnect switch.

• True
• False

1. A platform and/or walkway is required for an installed appliance on a roof top when ______.

• there is standing water
• the appliance is above the waterline
• the roof is of a design having a water seal
• all of the answers provided

1. Equipment and appliances located on a roof top shall not be required to have access.

• True
• False

1. Buildings over ______in height shall have an inside means of access to the roof, unless other means of access are acceptable to the Authority Having Jurisdiction.

• 10 feet
• 15 feet
• 20 feet
• 28 feet

1. The minimum trap door size shall be ______by ______.

• 22 inches – 24 inches
• 24 inches – 30 inches
• 28 inches – 36 inches
• 32 inches – 36 inches

1. Not less than ______of clearance shall be between the access opening and the edge of the roof or guards and not less than 42 inches in height shall be provided on the exposed side.

• 3 feet
• 6 feet
• 8 feet
• 10 feet
• 12 feet

1. Permanent lighting shall be provided at the roof access, with a switch located inside the building near the access leading to the roof.

• True
• False

1. Attic access shall have a passageway of at least ______by ______.

• 22 inches – 24 inches
• 22 inches – 30 inches
• 28 inches – 36 inches
• 32 inches – 36 inches

1. If the attic is under 6 feet in height, the distance to the appliance shall not exceed ______.

• 15 feet
• 20 feet
• 28 feet
• 30 feet

1. The width of a passageway in an attic should be at least ______.

• 16 inches
• 18 inches
• 24 inches
• 28 inches
• 32 inches

1. In an attic, the size of a level platform in front of a gas appliance should be at least ______by ______.

• 24 inches – 24 inches
• 30 inches – 30 inches
• 32 inches – 32 inches
• 36 inches – 36 inches

1. In an attic, is it required for a 120-volt receptacle and a lighting fixture to be installed near the appliance?

• Yes
• No

Quiz 4

1. The ______is not found on electric water heaters.

• upper heating element
• middle heating element
• lower heating element
• drain valve
• temperature & pressure relief valve

1. Heating elements are either the ______type or the ______type.

• flange – screw-in
• quick connect – nut & bolt
• slip joint – pressure fit
• flare fit – compression

1. Upper thermostats have a/n ______.

• override control
• high temperature safety cut out
• low pressure cut out
• high pressure cut
• all of the answers provided

1. A Pictorial Wiring Diagram is similar to the As Built Illustration except that it used standard symbols.

• True
• False

1. A Ladder Wiring Diagram is most useful in ______.

• understanding the sequence of electrical operation of the components
• color coding the wires
• placement of the components on the actual system
• all of the answers provided
• none of the answers provided

1. Generally, with the entire tank cold, the heating elements start with ______.

• upper then lower
• lower then upper
• both at the same time
• alternates between upper and lower until tank satisfied
• none of the answers provided

1. The device that turns a heating element ON and OFF is ______.

• the thermostat
• the high limit switch
• a manual temperature switch
• a pressure switch

1. On a complaint of no hot water, check the following item:

• electrical breaker in panel box
• high limit switch in upper thermostat
• upper element
• all of the answers provided
• none of the answers provided

1. The maximum temperature for a thermostat should be ______or less.

• 100°F
• 110°F
• 120°F
• 130°F
• 140°F

1. At 130°F, scalding can take place around ______.

• 1/2 minute
• 1 minute
• 2 minutes
• 5 minutes
• 10 minutes

1. A good water heating element should ohm from ______.

• 9 to 20
• 21 to 50
• 51 to 500
• none of the answers provided

1. A water heater with a broken dip tube allows cold water to ______.

• fall to the bottom of the tank
• mix with the hot water in the tank thus giving an even temperature
• be discharged by the temperature & pressure relief valve
• short circuit to the hot water outlet
• none of the answers provided

1. Noise from the water heater most likely is from ______.

• harmonics in the water supply piping
• sludge boiling in the bottom of the tank
• corroded heating elements
• water hammer amplified throughout the system
• a plugged up overflow

1. The main purpose of an anode is to ______.

• help keep the tank from rusting
• prevent electrical shock to the heating elements
• kill pathogens in the water
• prevent corrosion on the steel to copper pipe connections
• replace dielectric unions

1. A T&P valve may leak or weep because ______.

• the valve is defective
• the pressure in the tank is approaching dangerous level
• thermal expansion of the water
• all of the answers provided

Quiz 5

1. 40 gallons of water when heated from 50°F to 120°F will increase in volume by about ______.

• 1/2 gallon
• 1 gallon
• 2 gallons
• 5 gallons
• 7 gallons

1. 100 gallons of water when heated from 50°F to 120°F will increase in volume by about ______.

• 1/2 gallon
• 1 gallon
• 2 gallons
• 5 gallons
• 7 gallons

1. An installation that does allow the expanded water back into the water supply is known as a/n ______system.

• closed
• open
• standard
• water supply compliant

1. An installation that does not allow the expanded water back into the water supply is known as a/n ______system.

• closed
• open
• standard
• water supply compliant

1. An over pressurized water tank can lead to ______.

• collapsing the internal flue vent
• opening of the TP valve
• physical deformation of the interior of the tank
• piping leaks throughout the system
• all of the answers provided

1. When water is allowed to continuously drip from the TP relief valve, ______.

• minerals from the water can build up on the valve, eventually blocking it
• energy is wasted as the heated water goes down the drain
• water is wasted as the heated water goes down the drain
• all of the answers provided
• none of the answers provided

1. Pressure relief valves are typically set at ______.

• 50 psi
• 100 psi
• 150 psi
• 200 psi
• 300 psi

1. The major disadvantage of using a water relief pressure valve is ______.

• the extra piping cost involved
• finding a suitable drain/sewer connection
• freeze protection in cold temperatures
• increased water/energy costs
• none of the answers provided

1. The recommended expansion tank size for a system with a 20-gallon tank and a water supply pressure of 50 psi would be ______.

• 2.0 gallons
• 3.2 gallons
• 4.4 gallons
• 10.3 gallons

1. The recommended expansion tank size for a system with a 65-gallon tank and a water supply pressure of 70 psi would be ______.

• 2.0 gallons
• 3.2 gallons
• 4.4 gallons
• 10.3 gallons

1. The recommended expansion tank size for a system with an 80-gallon tank and a water supply pressure of 40 psi would be ______.

• 2.0 gallons
• 3.2 gallons
• 4.4 gallons
• 10.3 gallons

1. The recommended expansion tank size for a system with a 120-gallon tank and a water supply pressure of 40 psi would be ______.

• 2.0 gallons
• 3.2 gallons
• 4.4 gallons
• 10.3 gallons

1. A double check valve on the water supply line would indicate a/n ______system.

• open
• closed
• up to date
• automatic
• non-automatic

1. The UPC requires a water system that could cross connect to the water supply have a back flow preventer assembly installed.

• True
• False

1. A thermal expansion tank should be placed on the ______side of the water heater.

• hot
• cold
• hot and cold (2 tanks)
• either one – does not matter

1. A thermal expansion tank should be installed ______.

• horizontally
• vertically
• at a 45-degree angel
• at any angel

1. The most difficult problem to overcome when installing an expansion tank is the ______.

• support of the tank
• reluctance of the home owner
• size
• location

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