Section 4- Fixtures and Water Heaters

Question 1

Water heaters used for domestic hot water can be used for space heating if

Answer 1

the water temp does not exceed 140

Question 2

water heater installed in a crawl space must have

Answer 2

travel path no less than 5 feet of vertical distance
installed on at least 2 in thick corrosion resistance material adequate to support

Question 3

attic, drop ceiling, or wood flooring water heater install must be…

Answer 3

installed with a corrosion resistant water tight pan below water heater
at least 3/4 in drain pipe similar to TP

Question 4

On water heater install, the TP may discharge into drain pan if drain pipe is

Answer 4

equipped with 1 in drain, of suitable material for hot water, discharges through air gap into sump basin, service sink, o.r. or other approved discharge

Question 5

Fuel fired water heater must be connected to

Answer 5

a flue or chimney

Question 6

Flue or chimney of a water heater shall

Answer 6

at least size recommended by manufacturer
extend 2 ft above roof
properly flashed
not terminate within 6ft of door or window

Question 7

Fuel fired water heater vent shall not

Answer 7

be connected to a flue serving a coal-burning apparatus

Question 8

Fuel fired water heater shall not be placed in any

Answer 8

bathroom, toilet room, or a room used for sleeping unless it has a direct vent or through the wall vent system

Question 9

Fuel-fired water heater shall not be placed in a closed room or closet unless

Answer 9

there is a louver door or ventilated to provide combustion air and circulation per NFGC

Question 10

Gas fired direct vent requirements

Answer 10

vented per manufacturer
install to satisfy National Fuel Gas Code
50,000 BTU or less located at least 9in from any opening where flue gases may enter;
more than 50,000 at least 12 in`; bottom of vent terminal and air intake at least 12in above grade

Question 11

in a location with a floor drain, TP relief valve may discharge into the floor if it

Answer 11

is piped to within 2in to the floor

Question 12

without a floor drain, TP relief should be piped to

Answer 12

outside of the building with an ell turned down and to within 4 in of the surface of the ground

Question 13

A trap or pipe shall not extend nearer to the floor than

Answer 13

12 inches except laundry trays or similar fixtures

Question 14

Plastic water closet bowl shall have

Answer 14

3in water seal and 2 1/8 in waste opening passage

Question 15

Frost-proof closet may may be installed only in a building

Answer 15

that has at least a 12in air break between it and any building used for habitation or occupancy

Question 16

Frost-proof water closet room shall

Answer 16

be tightly enclosed and accessible from outside only
have a nonabsorbent floor
have a soil pipe between trap and hopper of 4 in diameter
have a 4 inch vent

Question 17

Floor or shower drain shall be considered a fixture and shall be provided

Answer 17

a strainer

Question 18

A shower pan shall be constructed to a minimum height of

Answer 18

six inches on all vertical walls

Question 19

A shower pan is not required on

Answer 19

a concrete floor below outside grade level

Question 20

Shower pan shall be constructed of

Answer 20

Sheet lead (at least 4lbs/in2), nonplasticized chlorinated polyethylene, Nonplasticized PVC, other approved materials specified

Question 21

A fixture other than a WC or pedestal urinal shall be provided with

Answer 21

a strainer

Question 22

Outlet of a strainer shall not be less than

Answer 22

the interior of the trap

Question 23

Overflow from a fixture shall be

Answer 23

optional

Question 24

If new fixture is found to be defective by dept or old fixture is unusable condition, it shall be replaced, repaired, or removed within

Answer 24

30 days upon written notice by the dept

Question 25

Instantaneous water heaters shall be and have

Answer 25

ANSI Z21.10 for 75,000 BTU or less
ANSI Z21.10.3 for exceeding 75,000 BTU
min 3/4 inlet and outlet
properly sized relief valve not more than 150 PSI
enable flushing without altering installation

Question 26

Water heater shall be considered ______ and shall comply with KRS Chapter _____ and 815 KAR Chapter ___ if water heater exceeds

Answer 26

Pressure vessels
Ch 236 Ch15
Heat input of 200,000 BTU /HR
Water temp of 210 degrees
Water storage capacity of 120 gallons

Question 27

Domestic water preheating device connected with high pressure line from compressor of domestic home AC or heat pump.Must have

Answer 27

double wall heat exchangers (2 seperate thicknesses)
water inlet with check valve and pressure relief at 5PSI above max water pressure if more than 20lbs refrigerants
equipped with temp control limit actuating a pump circulating hot water form WH to preheater device
condensate water piped to code and not drained to crawl space, sewer or vent stack, not subject to freezing (can use condensate pump if drain not available or above the vent)

Question 28

fan coil unit from domestic water heater temp shall not exceed

Answer 28

140 degrees

Question 29

fan coil unit shall not use less than _____ in piping and its run shall not exceed _______ btw water heater and heating unit

Answer 29

3/4 in and 140 feet