[Adopted 10-3-1988 as Title 15, Ch. 3, of the 1988 Code]
This article shall be known as the "Heating, Ventilating and
Air Conditioning Code of the Village of Kimberly" and will be referred
to in this article as "this code" or "this article."
A.
The purpose of this article is to provide minimum regulations, provisions
and requirements in the Village of Kimberly to ensure safety and adequacy
to persons and property wherever heating, ventilating and air conditioning
is installed and to all alterations or improvements, including replacement
of any apparatus or device, pertaining to heating, ventilating and
air conditioning.
B.
The provisions of this article shall apply to every building or portion
of a building devoted to a new use for which the requirements are
in any way more stringent than the requirements covering the previous
use.
A.
Adopted by reference. Chapters Comm 23 and 64, Wis. Adm. Code, are
adopted and by reference made a part of this article with the same
force and effect as though set out in full.
B.
To be on file. A copy of the Heating, Ventilating and Air Conditioning
Code shall be on file in the offices of the Heating, Ventilating and
Air Conditioning Inspector and the Village Administrator.
As used in this article, the following terms shall have the
meanings indicated:
The process of treating air to control simultaneously its
temperature, humidity, cleanliness and distribution to meet the requirements
of the conditioned space.
A completely self-contained, direct-fired, automatically
controlled, vented appliance for heating air by transfer of heat of
combustion through metal to air and designed to supply heated air
through ducts to spaces remote from the appliance location.
Any combination of building construction, machines, devices
or equipment so proportioned, arranged, installed, operated and maintained
as to produce and deliver in place the required amount and character
of heating service.
The process of supplying or removing air by natural or mechanical
means to or from any space.
A.
Permit required. It shall be unlawful for a person, firm or corporation
to construct, install, alter or repair any heating, ventilating or
exhaust system (and appurtenance), replace a boiler, furnace, install
stoker and conversion units in or for any building before securing
a permit, except that in cases of emergency the contractor may proceed
with the work and file the application for a permit within 24 hours
thereafter (Sundays and holidays excepted). A heating permit will
not be required for the installation of electric baseboard or bathroom
heaters when installed as auxiliary heat; that is, to supplement the
existing heating system designed and installed to satisfy the load
requirements of the space to be heated. The reference to appurtenances
shall include direct heaters, cooling coils, central residential air
conditioning (cooling) and similar devices affecting the safety or
operation of the heating system.
B.
Application. The application shall be in writing upon forms which
the HVAC Inspector shall provide and shall include the name of the
owner and the description of the property on which the work is to
be done, along with such pertinent information as the HVAC Inspector
may require, and shall state that the property owner and the applicant
will be bound by and subject to the provisions of this article.
C.
Issuance, term, suspension and revocation. When the HVAC Inspector
is satisfied that the work proposed by the applicant can be done in
conformity with the provisions of this article and after appropriate
fees have been paid to him, he/she shall issue the permit. Such permit
shall allow for the continuous performance of the work named thereon.
A permit shall automatically expire when work ceases for a period
of 60 days without good reasonable cause for the same as may be approved
by the HVAC Inspector and shall automatically expire on completion
of the work for which it is issued, provided the HVAC Inspector may,
upon notice, suspend or revoke such permit for violation of the provisions
of this article.
D.
Restrictions on issuance.
(1)
No HVAC permit shall be issued to any person who is in violation
of this article until such violation has been corrected.
(2)
No HVAC permit shall be issued to any person against whom an order
issued by the HVAC Inspector is pending, provided this restriction
may be waived by the HVAC Inspector.
E.
Appeals for failure to issue, suspension or revocation. Any person directly interested who is aggrieved by the decision of the HVAC Inspector to refuse to issue a permit or to suspend or revoke such permit or to order work stopped may obtain a review of such determination under Chapter 7, Administrative Review, of the Code of the Village of Kimberly.
F.
Data required as part of the permit application. All drawings submitted
for approval shall be accompanied by sufficient data and information
for the HVAC Inspector to determine if the capacity of the equipment
and the performance of the equipment shall satisfy the requirements
of the section. The following data shall be submitted:
(1)
Submit heat loss calculation in BTU per hour for each room to be
heated.
(2)
Include calculations for ventilation requirements.
(3)
Submit one or more copies of complete drawings. When the heating
and ventilation drawings require approval of the Wisconsin Department
of Safety and Professional Services, one or more approved copies shall
be submitted with the application.
(4)
Summation of heating and ventilating load requirement.
(5)
Installations shall be made to conform to approved drawings.
(6)
Plot plan showing the location of the condensing unit for air conditioning.
(7)
For solar systems, furnish:
(a)
An estimate of the amount of energy in BTUs to be delivered by the
system on an annual basis, which estimate shall be based on the "F"
chart analysis or another method appropriate to the system considered,
and collector performance data as is determined by a recognized testing
lab.
(b)
The collector tilt and azimuth angle and a solar path shading diagram
for the proposed collector location indicating the shading between
the hours of 9:00 a.m. and 3:00 p.m. CST for the entire year.
(c)
A plot plan showing the proposed location of the solar collector
and any tree and/or structure that presently casts a shadow within
20 feet of the proposed collector location.
(d)
A detailed drawing showing anchorage and bearing of collector supports.
(e)
Detailed drawings of all piping, pumps, blowers, wiring, storage
vessels, ductwork, dampers, valves, insulation and all other material
that will be required to install the system.
G.
Design standards.
(1)
The heating and ventilating design shall conform to methods and standards
approved by the HVAC Inspector when not in conflict with the Wisconsin
Department of Safety and Professional Services. (Note: The HVAC Inspector
will accept the method and standards recommended by the American Society
of Heating, Refrigeration and Air Conditioning Engineers; National
Warm Air Heating and Air Conditioning Association; Mechanical Contractors'
Association of America and National Electrical Manufacturers'
Association.)
(2)
Minimum design standards for all rooms in living quarters shall be
70° F. except bathrooms, which shall be 75° F. The minimum
outside design temperature shall be -20° F.
(3)
The total heat loss of a building, including the basement, shall
be used in sizing heating units or electrical service for electrical
space heating.
(4)
The proper "U" factors shall be selected and shall reflect the additional
heat loss in areas located over unheated areas.
H.
Supplemental permits. The permit holder responsible for the work
shall complete any application for a supplemental permit mailed to
him/her and return it to the HVAC Inspector within seven days of the
postmark date of the application for a supplemental permit. Failure
to return the application for a supplemental permit prior to commencing
work shall be deemed to be working without a permit.
A.
In any new building or addition, immediately upon completion of those
portions of the installation which are thereafter to be concealed
or covered, the heating contractor shall notify the HVAC Inspector
that said portions of the installations are ready for inspection,
and it shall be unlawful for any person, firm or corporation to lath
over, plaster or cover up any heating work before such work has been
inspected and a rough inspection card posted. The HVAC Inspector shall
have the right and authority to order the removal of all such lath,
plaster or other covering which may have been placed over such work
as has not been inspected. The HVAC Inspector shall make inspections
within two working days after notice. Final inspection on new installations
is to be made upon completion of such work. Inspection of repairs,
replacement or conversion work is to be made upon completion of such
work. The heating contractor shall notify the HVAC Inspector as soon
as the installation is complete and ready for inspection.
B.
Wherever any work or project governed by provisions of the HVAC Code
and for which a permit has been issued, as provided herein, is being
performed or carried on in violation of any of the provisions of said
code, it shall be the duty of the HVAC Inspector to post a printed
notice to stop work, signed by the HVAC Inspector, on the premises
where such work is in progress and to notify anyone in charge of such
work on the premises of such stop-work order. After the posting of
such notice, it shall be unlawful for any person, firm or corporation
to do any further work on such project until such time as the defects
or violations of the HVAC Code have been eliminated to the approval
of the HVAC Inspector.
C.
When the HVAC Inspector finds any installation in which there are
violations of the code, he/she shall issue a written order specifying
the violation and stating the date by which these corrections shall
be made. Any permittee failing or neglecting to comply with written
orders at the discretion of the HVAC Inspector shall not be issued
any further permits until such violations have been corrected and
penalty fee paid. Failure or neglect to comply with the provisions
of the HVAC Code and of the permit issued under this article shall
be considered a violation of this article.
In addition to the standard referred to in § 207-31 hereof, which shall be classed as minimum standards of this article, the installation of gas heating equipment shall conform to the requirements set forth in the following subsections of this section:
A.
Scope.
(1)
Applicability. The provisions of this article, unless otherwise indicated
herein, shall apply only to utilization-pressure (not in excess of
1/2 pound per square inch) gas-pumping systems extending from the
gas meter outlet connection to the inlet connections of appliances.
They are intended to cover the design fabrication, installation and
test of gas-piping systems for fuel gases such as natural gas, liquified
petroleum gas, liquified petroleum air, gas or mixtures thereof. They
are not intended to cover systems or portions of systems supplying
equipment engineering, designed and installed for specific manufacturing,
production processing, large power-generating application, melting
and treating furnaces, production ovens and similar applications.
(2)
Exception. Gas piping and control equipment requirements for systems
using gas pressures in excess of 1/2 pound per square inch:
(a)
Generally, the valving arrangement shall conform to the American
Standards Association (ASA-Z 21.33, 1950). The HVAC Inspector will
recognize as approved valving, arrangements and designs approved by
any other nationally recognized approved agency.
(b)
A safety relief valve shall be placed downstream from a gas
pressure regulator where gas is supplied at pressures in excess of
1/2 pound per square inch. The discharge from the relief valve shall
be piped to a safe location outside the building. (Valve setting not
to exceed four pounds.)
(c)
Provide a suitable pressure gauge in the gas line located downstream
from the pressure regulator.
(d)
Where a gas supply pressure is higher than that at which the
burners are designed to operate, a gas pressure regulator shall be
provided to reduce pressure to satisfy design conditions.
(e)
Where the gas supply pressure is in excess of 1/2 pound per
square inch, the piping system shall be identified indicating the
maximum line pressure. It is recommended that the legend "Gas __________
psi" (pounds per square inch, to be inserted in the blank) be applied
on gas piping near and downstream from pressure regulator at intervals
of 50 feet in every room or area which is less than 50 feet.
(f)
Submit two copies of drawings (schematic is acceptable) and
specifications to the HVAC Inspector for review and approval.
B.
Work on gas piping containing unmeasured gas. Disconnecting inlet
of gas meter, changing meter location or making connection to gas
service pipe shall be done only by gas company employees or others
authorized by the gas company to do such work. A pipe fitter shall
connect or disconnect the building piping from outlet meter connections
when necessary. No person, unless in the employ of the gas company
or having permission from the gas company, shall turn on or reconnect
gas service in or on any premises where and when gas service is not
at the time being rendered. It shall further be unlawful to turn on
or supply gas on or at any premises unless at least one gas appliance
is connected to the gas-piping system and all outlets are properly
and securely connected to appliances or capped or plugged with screw
joint fittings.
C.
Authority to disconnect. The HVAC Inspector or the gas utility is
hereby authorized to disconnect or have disconnected any gas space-heating
equipment or gas piping which shall be found not to conform to the
requirements of this article or which may be found defective and in
such condition as to endanger life or property. Where such disconnection
has been made, a notice shall be attached to such equipment or gas
piping which shall state that the same has been disconnected, together
with a reason therefor, and such notice shall not be removed nor shall
the equipment or gas piping be reconnected until authorized by the
HVAC Inspector to do so. Cost of such disconnect by the Inspector
shall be paid for by the owner of the premises.
D.
General precautions.
(1)
Installation of gas piping. Installation of gas piping shall be performed
with the gas turned off to eliminate hazards from leakage of gas.
Connection of the new piping system to the existing system shall be
done, if practical, with the gas turned off.
(2)
Burner and pilot valves. Before turning off the gas at the meter,
except in cases of emergency, all burner and pilot valves on the premises
supplied with gas through the meter shall be turned off and the meter
test hand observed for a sufficient length of time to ascertain that
there is not gas passing through the meter. When there is more than
one meter on the premises, precaution shall be exercised to assure
that the proper meter is turned off.
(3)
Checking for gas leakage. No matches, candles, flame or other source
of ignition shall be employed to check for gas leakage from meters,
piping or appliances. Check for gas leakage with a soap and water
solution.
(4)
Artificial illumination. Artificial illumination used in connection
with a search for gas leakage shall be restricted to electric hand
flashlights, fixed electric lights controlled only by explosion-proof
safety switches or switches remote from the area of the leakage or
approved safety lamps.
(5)
Smoking not permitted. When connecting or disconnecting pipe which
contains gas, smoking shall not be permitted.
(6)
Electric circuits grounded to gas piping. Except for appliance controls
requiring a ground electrical system, including low-voltage, circuits
shall not be grounded to gas piping.
E.
Piping to meter location.
(1)
Piping extended to meter location. Gas building piping shall be extended
to the meter location specified by the gas company. The meter location
and gas-piping connection shall be such that the meter connections
are easily accessible in order that the meter may be read or changed.
(2)
Piping marked. Piping from multiple meter installations (four or
more meters) shall be plainly marked near outlet connection with a
permanent tag by the installer so that the piping systems supplied
through them can be readily identified.
(3)
Meters supplied by single service pipe. Unless otherwise approved
in writing by the gas company, all meters supplied by a single service
pipe shall be at the same location.
(4)
Piping systems not interconnected. Unless otherwise approved, where
two or more meters are installed on the same premises but supply separate
consumers, the piping systems shall not be interconnected on the outlet
side of the meters.
(5)
Pipe Capacity Table 1:
|
Table 1
Pipe Capacity
(Cubic Feet Per Hour with a 67 S.P. 970 BTU SP. GR. Gas
and Pressure Drop of 0.3 Inch Water Column)
| ||||||||
|---|---|---|---|---|---|---|---|---|
|
Length of Pipe
(feet)
|
Nominal Diameter of Pipe
(inches)
| |||||||
|
3/4
|
1
|
1 1/4
|
1 1/2
|
2
|
3
|
4
| ||
|
15
|
158
|
319
|
694
|
1,130
|
2,300
|
6,000
|
12,900
| |
|
30
|
111
|
223
|
495
|
790
|
1,640
|
4,350
|
9,000
| |
|
45
|
92
|
184
|
403
|
650
|
1,360
|
3,600
|
7,300
| |
|
60
|
80
|
160
|
352
|
565
|
1,200
|
3,200
|
6,300
| |
|
75
|
71
|
144
|
317
|
500
|
1,040
|
2,775
|
5,550
| |
|
90
|
65
|
131
|
287
|
455
|
925
|
2,500
|
5,100
| |
|
105
|
60
|
123
|
264
|
415
|
850
|
2,250
|
4,700
| |
|
120
|
111
|
250
|
390
|
795
|
2,125
|
4,450
| ||
|
150
|
101
|
224
|
350
|
720
|
1,925
|
4,050
| ||
|
180
|
93
|
208
|
325
|
670
|
1,800
|
3,700
| ||
|
210
|
190
|
295
|
610
|
1,650
|
3,400
| |||
|
240
|
176
|
280
|
570
|
1,550
|
3,200
| |||
|
270
|
165
|
265
|
535
|
1,450
|
3,000
| |||
|
300
|
158
|
250
|
500
|
1,375
|
2,750
| |||
|
450
|
130
|
210
|
415
|
1,150
|
2,300
| |||
|
600
|
110
|
180
|
360
|
950
|
1,975
| |||
F.
Size of piping to gas appliances.
(1)
Sufficient size. Piping shall be of such size and so installed as
to provide a supply of gas sufficient to meet the maximum demand without
undue loss of pressure between the meter and the appliance or appliances.
The minimum gas pipe shall be not less than 3/4 inch. This does not
apply to water heaters, space heaters and unit heaters with inputs
of less than 50,000 input. The size of the gas pipe to be used depends
upon the following factors.
(2)
Pressure loss. The pressure loss in any gas-piping system from the gas meter to any appliance for the maximum demand shall not exceed 0.3 inch water column. The minimum size of piping required to comply with the 0.3 inch pressure loss limitation shall be determined by the procedure given in Subsection F(3) below or by standard engineering methods, including use of gas flow computers.
(3)
Size of piping. To determine the size of any section of gas pipe
in a system, proceed as follows:
(a)
Measure the length of pipe from the gas meter to the most remote
outlet of the building on that piping system. Where separate or individual
fuel lines are extended from the meter to one or more appliances,
such as an individual gas line to heating plant, each separate fuel
line from the meter shall be considered as a separate piping system.
(b)
In Table No. 1, select the horizontal line showing the distance
or the next longer distance if the table does not give the exact length.
(c)
Use this horizontal line so selected to locate all gas demand
figures for this particular system of gas piping.
(d)
Starting at the most remote outlet, find in the horizontal line
just selected the gas demand for that outlet. If the exact figure
of demand is not shown, choose the next larger figure in the same
horizontal line.
(e)
Above this demand figure in the first line at the top of Table
No. 1 will be found the correct size of pipe required to serve such
an outlet.
(f)
Proceed in a similar manner for each outlet and each section of pipe. For each section of pipe, determine the total gas demand supplied by that section and use the length indicated by Subsection E(5) above, which length is at all times taken as the total distance from the meter to the most remote outlet.
(g)
The hourly volume of gas required at each outlet shall be taken
as not less than the maximum hourly rating specified by the manufacturer
of the appliance or appliances to be connected to each such outlet.
Where the manufacturer's rating of an appliance is given in British
thermal units (BTUs) per hour, this rating shall be divided by 970
to obtain the corresponding gas demand in cubic feet per hour for
natural gas. Where BTU rating of gas appliances to be installed has
not been definitely specified, estimate of approximate requirements
may be based on current typical appliances.
G.
Materials for pipe and fittings.
(1)
Rigid pipe and fittings.
(a)
Gas pipe shall be black wrought iron or steel pipe complying with the American Standard for Wrought Iron and Wrought Steel Pipe, A.S.A. B36D-1939. All pipe fittings (except shutoff cocks or valves) shall be malleable iron or steel when used with wrought iron or steel pipe. In sizes three inches or larger, all piping must be welded. [See Subsection G(1)(b) below.] Exception: Plastic pipe may be used outside of a building only and when it is buried at a minimum depth of 12 inches and when it is used in the sizes of three-eighths-inch outside diameter for gas lights and five-eighths-inch outside diameter for gas grills. The plastic pipe must be an approved type.
(b)
The use of welded steel fittings, either shop or field fabricated,
and jointing of pipe by welding is permissible.
(c)
Plain end pipe with gland-type couplings shall not be used within
or under any building or structure but may be used for exterior or
underground installations.
(d)
Ground joint unions or gasket-type unions with leather gaskets
shall be used in gas building piping.
(e)
Copper or brass pipe in iron pipe sized when assembled with
threaded fittings of the same material may be used. Copper tubing
with seat, flared or compression fittings shall not be used for building
piping.
(f)
Aluminum piping in iron pipe sizes may be used, provided that
no aluminum pipe may be used for underground installations, nor in
contact with masonry or concealed in walls or partitions constructed
of masonry materials, nor exposed to alkaline chemicals, fumes or
materials. Aluminum pipe shall not be extended through walls or ceilings.
(2)
Semirigid tubings and flexible metal connectors. Copper or aluminum
semirigid tubing, flexible metal connectors and fittings may be used
in place of rigid pipe for connection of individual appliances, other
than gas space-heating equipment and gas water heaters, to building
piping. Flexible metal connections or fittings shall bear the seal
or listing symbol of a nationally recognized testing agency acceptable
to the Building Inspector or be fabricated and assembled from material
using a flared-type connection. The length of tubing shall not exceed
six feet.
H.
Concealed pipe.
(1)
Pressure. The requirements of this section shall apply to concealed
gas piping utilizing gas pressures up to and including four pounds
per square inch. Concealed or embedded pipe or tubing shall be tested
before being covered to a hydrostatic or compressed air pressure of
not less than 50 pounds gauge for a period of not less than 10 minutes.
(2)
Minimum size. No pipe smaller than three-fourths-inch pipe size shall
be used in any concealed location.
(3)
Gas piping embedded in concrete.
(a)
When gas pipe is to be embedded in concrete or cement, it shall
be coated with a corrosion-resisting material or laid in a conduit
of iron pipe or glazed tile with tightly sealed joints. Tile joints
shall be packed with jute or hemp at the base and remaining joint
space filled with cement mortar or hot pour compound suitable for
clay pipe. The coating or conduit shall be extended at least two inches
beyond the point where the pipe emerges from its concrete embedment.
Where the encasing conduit terminates underground, it shall be tightly
sealed around the gas pipe with bituminous or asphaltic material to
prevent the entrance of moisture. Where pipe is to be embedded directly
in a concrete floor, necessary precautions shall be observed to prevent
the pipe from being damaged prior to and during the pouring of the
concrete floor. The piping shall be installed and supported above
the underlying fill so that there will be a minimum thickness of 3/4
inch of concrete both under and over the pipe in the finished installation.
Gas pipe shall not be embedded in a cinder fill or in a cinder concrete
fill unless the pipe is laid in glazed tile pipe with tightly sealed
joints as specified above.
(b)
Gas pipe in solid floors, such as concrete, may be laid in channels
in the floor suitably covered to permit access to pipe with minimum
damage to the building. The channel may be covered with a removable
cover or the channel may be filled with some noncorrosive material.
(c)
No gas line shall be buried in or contact with the ground or
fill under any building or structure unless suitably encased in a
conduit installed as prescribed above for embedment in concrete.
(4)
Piping in partitions. Where concealed piping is located in hollow
rather than solid partitions, the space concealing the pipe shall
be ventilated to permit the escape of gas should leakage develop.
Ventilation may be provided by small grills in the wall or by making
the opening through which the pipe leaves the concealed space at least
1/2 inch larger than the outside diameter of pipe.
(5)
Connections in original installation. When installing pipe which
will be concealed, unions, running threads, right- and left-hand couplings,
bushings and swing joints made by combination of more than two fittings
(not including nipples) shall not be used.
(6)
Reconnections. When necessary to insert fittings in piping which
has been installed in a concealed location, the piping may be reconnected
by the use of a ground joint union with the nut "center punched" to
prevent loosening by vibration.
I.
Underground gas piping.
(1)
Corrosion-resistive material. All wrought iron or steel gas piping
installed below ground level outside of any building or structure
shall be protected against corrosion with a coating or corrosion-resisting
material recommended by the manufacturer for underground use and applied
in accordance with manufacturer's printed instructions.
(2)
Minimum depth. Underground piping located exterior to any building
or structure shall be installed at a depth to provide a minimum cover
of 18 inches. Exception: The depth of burial of plastic gas pipe for
gas lights of three-eighths-inch outside diameter and grills of five-eighths-inch
outside diameter shall be not less than 12 inches. Where plastic gas
piping passes within 12 inches of any underground electrical piping,
it shall be run in a split tile or an approved asbestos product. Where
it crosses underground electrical piping, it must be run in split
tile or an approved cement asbestos product for a distance of two
feet on each side of the electrical piping.
(3)
Separate ditch. Gas house piping shall not be installed in the same
ditch with water, sewer, drainage or other piping.
(4)
Dielectric insulation fittings. When any portion of iron or steel
pipe in gas house piping is buried or in contact with the ground and
is to be connected directly, such as through a water heater or other
appliance having water connections, to any copper piping or tubing
that is at some point in contact with the ground, the copper and iron
piping shall be separated electrically by means of dielectric insulation
fittings installed in the gas line.
(5)
Iron and copper piping. Iron gas pipe buried or in contact with the
ground shall be placed a minimum of two feet from all copper piping
or tubing that is buried or in contact with the ground. Where iron
and copper cross underground and it is impractical to maintain this
spacing, the iron pipe shall have a one-thirty-secondth-inch coating
of corrosion-resisting material suitable for underground use and applied
in accordance with manufacturer's printed instructions for a
distance of two feet from the point of crossing.
J.
Sleeve on building piping through masonry wall. Where gas pipe passes
through a wall below grade, the joint between the pipe and the wall
shall be caulked or cemented so as to form as tight a seal as is possible.
If the pipe is encased in a sleeve or conduit, both ends of the sleeve
or conduit shall be tightly sealed.
K.
Installation of gas piping.
(1)
Drip pipes. Where practical, all gas piping shall be installed so
that it will drain toward the meter. Horizontal piping shall be so
graded approximately 1/4 inch to 15 feet. Where it is necessary to
trap the gas line, the drip pipe shall be attached to trapped piping
at every point where condensation might collect. The drip pipe shall
not be smaller than the diameter of pipe to which it is attached and
shall be at least six inches long. The end of drip pipe shall be capped
and shall be accessible for draining.
(2)
Supporting pipe. Gas piping shall be securely fastened and supported
with pipe straps or hangers at sufficient intervals to prevent pipe
from sagging more than 1/4 inch between supports. Gas pipe shall not
be supported by or from other piping.
(3)
Fittings. A tee-fitting with the bottom outlet plugged or capped
instead of an ell-fitting shall be used at the bottom of any riser
to catch any dirt or other foreign materials.
(4)
Avoid clothes chutes, etc. Gas pipe inside any building shall not
be run in through spaces used for air duct, clothes chutes, chimney
or flue, ventilating duct, dumbwaiter or elevator shaft.
(5)
Cap all outlets. Each outlet, including a valve or cock outlet, shall
be securely closed gastight with a threaded iron plug or cap if not
used immediately after installation and shall be left closed until
an appliance is connected thereto. Likewise, when an appliance is
removed from an outlet and the outlet is not to be used again immediately,
it shall be securely closed gastight, using a threaded iron plug or
cap.
(6)
Air or oxygen under pressure. Where air or oxygen under pressure
is used in connection with the gas supply, effective means shall be
provided to prevent air or oxygen from passing back into gas piping.
Where air or oxygen supply is interconnected with the gas piping system,
a device used to prevent gas from passing the meter shall be approved
by the Building Inspector.
L.
Gas shutoff valves.
(1)
Accessibility of gas valves.
(a)
Main gas shutoff cocks or gate valves controlling several piping
systems shall be placed an adequate distance from each other so they
will be easily accessible for operation. These valves shall be plainly
marked with a metal tag wired to the valve by the installer so that
the piping systems supplied through them can be readily identified.
(b)
The main gas shutoff valves on all gas space-heating equipment
shall be placed as close as possible to the equipment but shall be
located between four feet and six feet above floor level. No main
gas shutoff valves shall be concealed in the space-heating cabinet.
Exception: On suspended units, rooftop units, space heaters and through-wall
units, the gas valve shall be easily accessible and placed within
three feet of the unit.
(c)
All gas-fired appliances shall be equipped with a main shutoff
valve located between the appliance and the building piping. The shutoff
valve for heating plants and water heaters shall be of the lever type.
(2)
Location of shutoff on piping for apartments on master meter.
(a)
In multiple-tenant buildings supplied through a master meter,
a shutoff cock shall be installed in the apartment, to be supplied
at each of the appliances. If one riser or fuel line supplies all
the gas to any one apartment, only one shutoff cock need be used if
installed in this riser or fuel line, but it shall be located so as
to be readily accessible.
(b)
In the event that shutoff cocks are to be installed on the risers
or fuel lines in the basement instead of in the piping at the appliance
where the master meter is used, each riser or fuel line shall be tagged
with a wired-on metal.
The schedule of HVAC permit fees to be paid shall be as provided in § 207-14, and such fees shall be paid at the time the permit is issued.
