Nevada C-1H Water Heater Contractor Examination Feed

Under the 2018 UPC, a storage water heater heating potable water must be protected by which listed relief device?

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The 2018 UPC exempts which appliance from the combination T&P relief-valve requirement that applies to storage water heaters?

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When selecting a combination T&P valve for a storage water heater, the 2018 UPC and the valve listing require the valve’s Btu capacity to do which of the following?

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Manufacturers of combination T&P valves, as explained in the 2018 UPC Illustrated Training Manual commentary on Section 608.3, require the temperature-sensing element to be immersed where?

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Under 2018 UPC Section 608.5, which device is prohibited on the discharge piping of a temperature or pressure relief valve?

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The 2018 UPC requires the T&P relief-valve drain to be not smaller than which dimension?

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Why does the 2018 UPC forbid a threaded terminal on a relief-valve discharge pipe?

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A T&P discharge pipe that dips to form a water-filled loop violates the 2018 UPC because the drain must be which of the following?

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Where a 2018 UPC relief-valve drain terminates outdoors above grade, the pipe end must point downward and be located how far above the ground or flood level of the receiving area?

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Under the 2018 UPC, discharging a water-heater relief valve into the water-heater pan is which of the following?

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2018 UPC Section 608.4 limits the setting of a pressure relief valve and forbids a shutoff between the valve and the system. What is that maximum setting?

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A water system has a check valve or backflow preventer that keeps building pressure from flowing back into the main. Independent of water-heater type, the 2018 UPC requires which device on the building side of that check or preventer?

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Where must the 2018 UPC expansion tank for a closed potable-water system be installed?

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A listed 3-inch-ID instantaneous point-of-use heater is installed on a system that has a backflow preventer. Which 2018 UPC statement is correct?

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A homeowner reports the T&P valve drips during every long recovery cycle, but the valve tests open and reseats. The house has a new backflow preventer and no expansion tank. Under the 2018 UPC, what is the correct first correction?

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Under 2018 UPC Section 507.2, water heaters in seismic design categories C, D, E, and F must be anchored or strapped to resist what kind of movement?

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2018 UPC Section 507.2 requires water-heater straps at which locations on a vertical tank?

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At the lower seismic strap, the 2018 UPC requires a clearance of not less than how much from the water-heater controls?

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Where a water heater is located in an attic or in a floor-ceiling assembly so that leakage would cause damage, 2018 UPC Section 507.4 requires which of the following?

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What are the 2018 UPC minimum drain size and minimum depth for a water-heater drain pan?

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A replacement water heater is set in an upstairs closet over a finished living room. Which 2018 UPC combination is required?

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Appliances in a residential garage, or in adjacent spaces that open to the garage and are not living space, must have burners and burner-ignition devices located not less than how far above the floor unless the water heater is listed as flammable vapor ignition resistant?

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In addition to ignition-source height, 2018 UPC Section 507.13.1 requires a garage water heater to be protected from vehicles by which method?

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A gas water heater is enclosed in a separate approved garage compartment that is accessed only from outdoors, and all combustion air is taken from and discharged to the exterior. Under 2018 UPC Section 507.13.2, the appliance may be installed how?

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A fuel-burning water heater may be installed in a closet opening into a bedroom or bathroom only if which 2018 UPC Section 504.1 condition is met?

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Besides the gasketed-closet option, 2018 UPC Section 504.1 permits a water heater in a bedroom or bathroom when the heater is which type?

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A contractor proposes an atmospheric gas water heater in a bathroom linen closet, using the existing louvered bi-fold door and taking combustion air from the bathroom. Does 2018 UPC Section 504.1 allow this?

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Clearances for a listed water heater under 2018 UPC Section 504.3.1 shall be which of the following?

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Water heaters other than the direct-vent type shall be located how, relative to the chimney or gas vent, under 2018 UPC Section 504.2?

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A water heater supported from the earth shall rest on what kind of base under 2018 UPC Section 507.3, and common UPC practice for that pad is to extend how far above adjoining grade?

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Using the 2018 UPC standard method, indoor combustion air requires a minimum space volume of which amount per 1,000 Btu/h of appliance input?

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A 40,000 Btu/h atmospheric water heater is installed in a closed 8 ft by 10 ft by 8 ft utility room with no combustion-air openings. Using the 2018 UPC standard method, what is the correct evaluation?

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A basement contains a 100,000 Btu/h furnace and a 40,000 Btu/h water heater that share the same space. Using the 2018 UPC standard method, what indoor volume is required if no outdoor combustion air is provided?

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Outdoor combustion air for a water heater shall be supplied by which 2018 UPC arrangement?

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When two permanent outdoor combustion-air openings serve a water-heater enclosure, the 2018 UPC requires those openings to commence where?

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If the free area of louvers is unknown, 2018 UPC Section 506.8 says to assume which free-area percentages?

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Combustion-air ducts serving a water heater shall, under 2018 UPC Section 506.9, do which of the following?

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A combustion-air duct that terminates in an attic shall, under 2018 UPC Section 506.9, be which of the following?

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Draft hoods and barometric draft regulators serving a water heater shall be installed where, under 2018 UPC Section 506.1.2?

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A Type B gas vent serving a draft-hood water heater shall terminate not less than how far above the highest connected draft hood or flue collar?

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For a gas vent 12 inches or less in size that is at least 8 feet from a vertical wall, 2018 UPC Section 509.6.2 requires what minimum termination height above a roof with a pitch of flat to 6/12?

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A 14-inch Type B vent with a listed cap terminates near a higher roof ridge. Under 2018 UPC Section 509.6.2, the vent shall terminate at least how far higher than any portion of a building within 10 feet?

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Plastic piping may be used to vent a water heater under the 2018 UPC only when which condition is met?

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Special gas vents may be installed on a water heater only when which 2018 UPC condition is met?

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Vent connectors of natural-draft appliances shall not be connected to which of the following under 2018 UPC Section 509.3.3.3?

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A vent connector may connect to a chimney flue that also serves a fireplace only when which 2018 UPC condition is met?

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A single-wall vent connector from a draft-hood water heater passes through an unconditioned crawl space. That portion of the connector shall be which of the following?

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