Milford chronicle., 1954-07-30


luC gaSss and resist without sOften-
ng OI cracking, the temperatures TO
which they will be subjected, but not
ess than 10000 Fahrenheit, or Of cast
ron Of approved quality, form and
tdl REQUIRED clay hue Innings shall +
be not less than 5s of an inch thick +
for the smaller fiues and increasing in I
for the larger flues.
(e) Flue Innings shall be installed .
ahead of the construction OF the chim-
ney as IL is carried up, carefully bed-
ded one on the other IN type A, type
u or fire clay mortar with close fitting
Joints left smooth on the inside.
"a F'lue Innings shall start from a
point not less than inches below the
intake or, in the case of fireplaces,
from the throat of the fireplace. They
shall extend, as nearly vertically as
possible. for the entire height of the
chimney and be extended 4 inches
above the top or cap of the chimney.
(g) Cleanouts for tlues or hreplaces
and frames arranged to remain tight
ly closed when not in use.
Ch) When two or more fues are
contained in the same chimney, at
least every third flue shall be sepa-
rated by masonry al least inches
thick bonded into the masonry wall
of the chimney. Where flue Innings
are not so separated, the joints Of ad-
jacent fue Innings shall be staggered
at least 7inches,
s. Use Of fues. Chimneys or fiues
installed for the use OF gas appliances
but which are not suitable for solid or
LIQUID fuels, shall be plainly and per-
manentiv labeled. This FLUE Is
( FOR THE USE OF GAS BURNING
I APPLIANCES ONLY" The label shall
/ be attached at point near where the
vent pipe enters the. chimney, or with
q type B gas vent used in place OF a
chimney, at point near where the
| type B gas vent enters a wall, floor
or ceiling.
i g. Fireplaces
(a) The back and sides of freplaces
L hereafter erected shan be Of solid
masonry or reinforced concrete, not
less than inches in thickness. A lin
l ing OF fire brick at least 2inches thick
or other approved material shall be
provided unless the thickness is 4;
inches.
/ (b9 Fireplaces shall have hearths O
brick, stone, tile or other approved
noncOmbustible material supported OF
a fireprOof slab or on brick trimmel
iarches. Such hearths shall extend a
least 20 inches outside of the chin
Hey breast and not less than IL be
yOnd each side of the fireplace open
combined thickness of hearth AM
I supporting construction shall be 40
III less than inches at any point.
(c) Wooden forms or eenters use
In the construction Of that part OF tn
supporting construction which is be
low the hearth Of the fireplace sha
. be removed when the supporting con
, ! struetiOn of the hearth Is completed.
Cd Spaces between the chimney an
joists, beams or girders and any com
hustible materials shall be hreStoppe
, by filling with noncombustible mater
ial.
section IS. Flues and Vents for Ga
FIue connections required. Ever
l gas appliance shall De connected
: an effective flue extending TO II
2 outer air and conforming to the prS
visions of subsection 2 Of this seetto
+ If itsis included in any OF the follow
! ing classifications, provided that sue
. connections shall not be required 4
: Industrial appliances of such size
character that the absence Of a col
: nectiOn does not constitute a hazal
: (a) Domestic appliances with imp
i | rating in excess of $4,000 Btu p
4 hour, except domestic gas ranges.
Obi Automatically controlled appl
4 ances with input rating IN excess
= 900 Btu per hour, except aut0mat
;, instantaneous water heaters Of q
: single faucet type, where the slne
a faucet is attached to and made pa
i of the appliance.
~ .(c) Automatically controlled app
"A ances with input rating less than 90
IA Btu per hour, unless equipped Win
n automatic device 10 prevent the {
x cape Of unhurned gas at the ma
= burner or burners.
y The term automatically CONTROL
IL appliances used in paragraphs
- and (c) refers to appliances to viii
10 the gas supply is automatically turn
fh on and off In accordance with the
'ls mand for heat, but does not inclu
81 appliances equipped with devices
81 controls governing the supply OF
10 to the main burner or burners VIII
"a cannot automatically reduce the s
. supply below 80 per cent Of the inI
2 rating.
Se (d5' Appliances installed in the sa
room, which If not vented would ms
the total input rating of invented
\. appliances, not including dometsic
~; ranges, as great as 30 Btu per N
~ per cubic foot Of room content.
re (e) Water heaters installed in b.
rooms, bed rooms, or any Occup
cl- room normali-- kept closed.
sss (O Space heaters in sleeping qu
'e- ters for use Of transients.
.Ne (g1 All house heating steam and
m water boilers and warm air turna
I'm including floor furnaces.
~ is 2. Types of hues.
ia (a) Tvne A flues: Chimneys or N
Dy al snOlkestaclSs. Type A fiues are
III uuired for: u all incinerators; (2l
appliances which may be conveI
am readily to the use Of solid or lie
fuel; (3l all boilers and furna
ia other than attic furnaces e1s
ma where specific approval IS obtai
an from the building official for the
NOT of tyne B gas vents; (4l all Of
lU appliances except approved ap
Lhe ances which produce fiue gas z
ems peratures not in excess OF 55Oo n
l - E--F "a
the burning gas at the manufacture
ID (b5 Type B gas vents; ApprC
yer vent piping of nOncombustibie, co
ace sion-resistant material of adeQ'
llso Strength and heat insulating va
less snd having hell and spigot or o
Sht. acceptable joints Tyne B gas v
shall be used only with approved
and appliances which are not required
fire paragraph .(a) above TO be Vante'
,nts type A flues, except that they ma
less used when extended through an
listing non-used chimney, whether
ana chimney is lined or not lined.
(c) Type c gas vents: Vent pipe
Ev- sheet copper Of not less than "a I
pro- gauge or of galvanized iron OF
on less than 90 u. S. gauge o. OF Q
fiue approved corrosion resistant mate
this may be used Tor rms ollecIly
not | the SPACE I'm which the apphanC
,pli- located through a roof OF eXteri6T
ired to tbe outer air. Such vent pipes
noes not pass through any attic or
lout cealed space nor through any
This shall not be construed as
ues. bibiting the use of such vent pip'
ire vent attic furnaces installed IN
eys, cordance with the provisions OF
rae code. Installation with reterenc
with clearance from cOmbustible ma
ices, and passage through wall or roof
I'm comply with the provisions OF SUI
in tion 4 OF this section.
the 3. Installation Of type = gas Y
in gal Type 3 gas vents shall be
owed up with tight joints.
(b) Type 3 gas vents SHAH p
stalled with a clearance to combu'
least material or construction whether
here tered or upholstered, OF not less
the one inch. provided that for ven
CHER floor furnaces such clearance sns
such not less than 3 inches for a dis
of not less than feet from the
Deled ~ the draft hood, measured aion
,,or ! e-.,4o- Iina of the vent piping,