Section 4- Fixtures and Water Heaters Flashcards
Water heaters used for domestic hot water can be used for space heating if
the water temp does not exceed 140
water heater installed in a crawl space must have
travel path no less than 5 feet of vertical distance
installed on at least 2 in thick corrosion resistance material adequate to support
attic, drop ceiling, or wood flooring water heater install must be…
installed with a corrosion resistant water tight pan below water heater
at least 3/4 in drain pipe similar to TP
On water heater install, the TP may discharge into drain pan if drain pipe is
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
Fuel fired water heater must be connected to
a flue or chimney
Flue or chimney of a water heater shall
at least size recommended by manufacturer
extend 2 ft above roof
properly flashed
not terminate within 6ft of door or window
Fuel fired water heater vent shall not
be connected to a flue serving a coal-burning apparatus
Fuel fired water heater shall not be placed in any
bathroom, toilet room, or a room used for sleeping unless it has a direct vent or through the wall vent system
Fuel-fired water heater shall not be placed in a closed room or closet unless
there is a louver door or ventilated to provide combustion air and circulation per NFGC
Gas fired direct vent requirements
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
in a location with a floor drain, TP relief valve may discharge into the floor if it
is piped to within 2in to the floor
without a floor drain, TP relief should be piped to
outside of the building with an ell turned down and to within 4 in of the surface of the ground
A trap or pipe shall not extend nearer to the floor than
12 inches except laundry trays or similar fixtures
Plastic water closet bowl shall have
3in water seal and 2 1/8 in waste opening passage
Frost-proof closet may may be installed only in a building
that has at least a 12in air break between it and any building used for habitation or occupancy
Frost-proof water closet room shall
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
Floor or shower drain shall be considered a fixture and shall be provided
a strainer
A shower pan shall be constructed to a minimum height of
six inches on all vertical walls
A shower pan is not required on
a concrete floor below outside grade level
Shower pan shall be constructed of
Sheet lead (at least 4lbs/in2), nonplasticized chlorinated polyethylene, Nonplasticized PVC, other approved materials specified
A fixture other than a WC or pedestal urinal shall be provided with
a strainer
Outlet of a strainer shall not be less than
the interior of the trap
Overflow from a fixture shall be
optional
If new fixture is found to be defective by dept or old fixture is unusable condition, it shall be replaced, repaired, or removed within
30 days upon written notice by the dept
Instantaneous water heaters shall be and have
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
Water heater shall be considered ______ and shall comply with KRS Chapter _____ and 815 KAR Chapter ___ if water heater exceeds
Pressure vessels
Ch 236 Ch15
Heat input of 200,000 BTU /HR
Water temp of 210 degrees
Water storage capacity of 120 gallons
Domestic water preheating device connected with high pressure line from compressor of domestic home AC or heat pump.Must have
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)
fan coil unit from domestic water heater temp shall not exceed
140 degrees
fan coil unit shall not use less than _____ in piping and its run shall not exceed _______ btw water heater and heating unit
3/4 in and 140 feet
