Document da1gYVZxxmbEoZDqR3GYv0wRG

* .'WQI7, 1 9 5 ') \ 1-G and 4-G < STANDARD BOILERS h AMERiCAN-c^tandard v\/.y^>;Ap: ix-ft&Ss? ? - P DESIGNED SPECIFICALLY P> DURABLE CAST IRON CONSTRUCTION AMERiCAN-c^tattdfa^d First in heating first in plumbing < <_r STANDARD BOILERS TYPES 1-G and 4-G ot every kind ofi y&i EXCLUSIVELY FOR GAS he qualiiv which lias made American-Standard Heating TEquipment first choice for over half a century is built into everv inch of the 1-G and 4-0 Standard Boilers. Manufactured specificalb for gas fuel, they embody the most modern engineering developments for eliicicnt, completely automatic firing;. Designed by experts in the field of gas heating, Standard Boilers feature the ideal coordination of effective heating surface, precisionmade burners, and automatic controls for low-cost, trouble-free operation. Pin-type cast iron sections, manifold assemblies, mixer tubes. gas valves . . . all arc built into the Standard Boiler to assure top-notch performance with every tvpe of gas. A glance at the con struction details shown on the next page tells how effectively all these refinements have been combined into a compact heating unit. Handsome Forge Red jackets, with an attractive hammer finish that's easy to clean, add greatly to the appearand: of the installation. Standard Boilers take up surprisingly little space. And with their durable cast iron construction, they can be relied upon to give lone; vears of satisfactory service. STANDARD BOILER TYPE t-G STANDARD BOILER TYPE 4-G (13 SECTIONS AND UP) COMPLETELY AUTOMATIC No matter how large the installation, the 1-G and 4-G Standard Boilers ran be precisely and easilv regulated with their dependable automatic con trols. Gas is supplied to the burners through the A.G.A. listed Detroit 509 Theimotor Automatic Gas Valve, which is operated by a mom thermo stat to provide accurate temperature control. I I quality valve has a mechanical limit leature. .11 can be manually operated in the event ol power failure. Regular equipment on Standard'Boileis also includes automatic pilot switches, which quickly shut oil the (low of gas to main burners if the pilot flame is extinguished. FOR ALL BUILDINGS Typf.s 1-G and 4-G Standard Boilers come in a wide range of sizes 10 provide effortless healing in larger homes . . . apartment and office buildings . hospitals . . and various commercial and in dustrial buildings. These sturdv boilers can be used in batteries for large installations to provide an extremely flexible heat source, giving greatly increased economy during mild weather periods. ASK YOUR CONTRACTOR Therf is an American-Standard gas tired boiler to meet your heating requirements. For lurther in formation on the complete line, or for details of cost and installation, consult vour Heating Cuntractor. He is qualified bv training and expertent c to give you practical advice on tout heating problems. 00101 for Efficiency . . . Economy . . . Durability ~) RESITTING LOW WATER CUT-OFF -- On steam boilers, shuts off main burner gas supply electrically if boiler water reaches low point. CANOPY--Sealed into puttyfilled groove to form gas-tight connection between boiler flue passages and draft hood. DRAFT HOOD--Prevents either excessive drafts or down-drafts from affecting proper com bustion. JACKET--Sturdy metal in the striking Forge Red hammer finish, backed by a heavy layer of insulation. PILOT GAS FILTER--Prevents dirt, gum, or other foreign matter from clogging pilot tube or pilot. o AUTOMATIC GAS VALVE --Operated electrically by tmhee rrooom thermostat. Also r*-^daatt'es gas flow according ' Jraearn pressure or water tertTpeerr,ature of boiler. Has sure-acting mechanical upper limit. Can be manually oper ated. Recycles automatically on current interruptions. Elec tric ignition optional on 1-G Boilers. Jti PRESSURE REGULATOR 'Equipped with safety vent, regulator maintains fixed gas pressure. PRESSURE LIMIT CONTROL --4-G Steam Boilers are pro virUJ with a pressure limit c** ^1. When steam pressure reatmes predetermined point, gas supply is shut off. 4-G Water Boilers have an im mersion control located in boiler water to perform this function. THROTTLING CONTROL--Steam pressure or water temperature throttles gas flow gradually as boiler temperature rises to maintain desired room condi tions with utmost economy. CLEANOUTS--R cmovable cover plates provide easy access for cleaning flue sur faces. PINTYPE SECTIONS--Of dur able cast iron. Flue surfaces are studded with projections which absorb maximum heat from the rising gases, trans ferring this heat to boiler water. Machine-ground sur faces require no cement where sections are joined. AUTOMATIC PILOT--Prevents flow of gas to main burners if pilot goes out. Special con trol for 100% safety shut-off for LP-gas and butane-air gas (525 Btu, 1.16 sp gr). EFFICIENT BURNERS--P r e c i sion-made for quiet, econom ical operation with each type of gas. Raised rib, drilled port burners regularly furnished. Ribbon burners for manu factured gas optional. 4-G STANDARD STEAM BOILER VENTURI MIXER TUBE--Induces proper velocity to gas and primary air, and obtains the correct mixture of gas and air. 00102 The Standard eas fired cast iron sectional boiler is scientifically en gineered and precision-machined to facilitate quick and easv assembly. Individual sections and parts will pass through boiler room doors without difficulty. For time and labor saving installation, controls, valves, and con trol piping are factorv-assembled as far as practicable. Such assemblies vary with different boilers due to size, number of valves, etc. The illustra tion shows a typical sub-assembly, con sisting of nine separate items of control equipment . . . readv for attachment to the manifold union collar ... all of which have been accurately pre assembled at the factory. TIME PAYMENTS Standard B'jii.kks. like all American-Standard Heating llquipmem and Plumbing fixtures. can hr purchased for moderniza tion work on me American-Standard casv payment plan. Your Heating Contractor will handle all the details. See him for full information on the payment plan, and also on the complete \merican-Standard line of quality heating and plumbing products for vour other modernization requirements. l-G AND 4-G STANDARD BOILERS by AMERiCAN'c^tarafamf RATINGS AND DATA -- 4-G FOR HOT WATER OR STEAM Standard Hui IciModel Number AGA Inpul MBH \ G A Ouiput MBH Sieam or Waier 4-GS-6 4-GS-7 4-GS-A 4-GS-9 4-GS-IO 4iGS-11 4-GS-13 4-GS-15 4.t;s-l7 4-t;.S-l9 4-GS-21 4-GS-22 4-GS-25 4.GS2R 4.<;v.> 4.0 x 13 4-0 >-3` 4-GS-41 000 `20 MO 0G0 10*0 1 200 l 440 1 n:o :km 2400 2520 2*80 3240 3600 3840 4320 4800 480 376 u 72 768 H(>4 Old) 1 132 1 344 13 36 172R 1 `>20 2016 2304 2392 28811 3072 3436 3R40 For ImMlIolloni ol too lovol and olovot STEAM A G.A Steam Rating (q ft) Installed Radiation 'sq ft) Mfrt, Nat. Mixed. LP-Gas. or Rutane-Asr Gas tS25 Btu. 1.16 sp gr) 2000 2400 2800 3200 3600 4000 4800 3600 6400 7200 8000 H400 9600 10800 12000 12800 14400 16000 1390 1690 1995 2300 2610 2935 3570 4230 4895 5565 6205 1.520 7455 8385 9315 9940 11180 12420 Standard Boiler Model Number 4-GW-6 4-GW-? 4-GW-B 4-GW-9 4-GW-10 4-GW-t l 4-GW-13 4-GW-15 4-GW-17 4-GW-t 9 4-GW-21 4-GW-22 4-GW-25 4-GW-2B 4-GW-3! 4-GW-33 4-GW-37 4-GW-4I WATER VGA \Sater Raima (sq ft) Installed K.uliation MBH sq ft Mfd. Nat. Mixed. LP-Gai. or Butane- Air Gas 1525 Btu. 116 sp gr) 3200 3840 4480 5120 5760 6400 7680 8960 10240 11520 12800 13440 15360 17280 19200 20480 23040 25600 360 432 503 575 047 719 864 101S 1174 1334 1488 1565 1786 2011 2232 2381 2676 2976 2400 2H80 3355 3835 4.315 4795 5760 67o5 `K25 H89S *>920 10435 1 1905 13405 148H0 15875 17840 19840 Sue of Gas Connections (inches -- PM ButaneAir Gat Mfd Nat Mxd LP- t525 Gas Gas lias Gas Btu. 1.16 <P gr) 22 2 1- > 2 2 1 2 Vi 2 21* 2 2 Vi 2 2V: 2 21 I'h 21 2`5 21 2!i 2 1 Va 2 1 \ 2Vj 2-2 Vi 2-2 Vi 2-2 Vi 2-2V, 2-2 H T.T T.T 2-2 2-2 2-2 4-2 22 22 22 22 22 42 \2 1 '/ 2-' i: i/, 2-- q 1 '4 2-2V5 1^ 2-2 '/j 2-2 >4 4-2VJ 4-2 '/i 4-2'yi 4-2'/i 4-2 4-2 4-2 4-2 4-2 4-2 42 2-1% 2-2 J* 42 2-1 /* <-2Vi 42 3-1 Va <2 Vi 42 2-1 Va 4-2 Vi 42 2-G/5 4-2*4 42 2-lVi 4-2^5 Standard Boiler Model Number 4-GS-6 4-GS-7 4-GS-8 4-GS-9 4-GS-10 4-GS-U 4-GS-! 3 4-GS-15 4-CS-17 4-GS-19 4-GS-21 4-GS-22 4-CS-2S 4-GS-28 4-GS-31 4-GS-33 4-GS-37 4-GS-41 For InitalloHwi * olovtloos 2000 fl to S000 ft A.G.A. Input MBH Steam or Water AG.A. Output MBH Steam or Water STEAM A.G.A. Steam Rating (sq ft) Installed Radiation (sq ft) MU. Nat. Mxd. or ButaneAir Gas * LP-Gas Mfd. Nat. Mxd, or ButaneAir Gas* LP-Gas Mfd, Nat. Mxd. or ButaneAir Gas * LP-Gas Mfd. Nat, Mxd, or ButaneAir Gas * LP-Gas Standard Boiler Model Number 550 660 770 B80 990 1100 480 440 384.0 1833 1600 1265 1095 4-GW-6 576 528 460.8 2200 1920 1540 1330 4-GW-7 672 616 537.6 2S67 2240 1815 1570 4-GW-8 768 704 614.4 2933 2560 2100 1810 4-GW-9 864 792 691.2 3300 2880 2380 2055 4-GW-10 960 860 768.0 3667 3200 2665 2300 4-GW-11 1320 1540 1760 1980 2200 2310 1152 1344 1536 1728 1920 2016 1056 1232 1408 1584 1760 1848 921.6 1075.2 1228.8 1382.4 1536.0 1612.8 4400 5133 5867 6600 7333 7700 3840 4480 5120 5760 6400 6720 3250 3845 4450 5060 5675 S970 2810 3315 3835 4360 4895 5160 4-GW-t 3 4-G W-15 4-GW-17 4-GW-19 4-GW-21 4-GW-22 2640 2970 3300 3520 3960 4400 2304 2592 2880 3072 3456 3840 2112 2376 2640 2816 3168 3520 1843.2 2073.6 2304.0 2457.6 2764.8 3072.0 8800 9900 11000 11733 13200 14667 7680 8640 9600 10240 11520 12800 6830 7685 8540 9110 10250 11385 5955 6710 7455 7950 8945 9940 4-GW-25 4-GW-28 4-GW-31 4-GW-33 4-GW-37 4-GW-41 A.G.A. Water Rating (sq ft) Mfd. Nat. Mxd, or ButaneAir Gas * LP-Gas WATER InstaUed Radiation Mfd, Nat, Mxd, or Butane-Air Gas* LP-Gas MBH sq ft MBH 2933 3520 4107 4693 5280 5867 7040 8213 9387 10560 11733 12320 2560 3072 3584 4096 4608 5120 6144 7168 8192 9216 10240 10752 328 396 460 S27 594 659 792 923 1068 1214 1358 1430 2185 2640 3065 3510 3960 4390 5280 6155 7120 8095 9055 9535 287 345 401 460 517 575 690 80S 920 1046 1174 1238 1915 2300 2670 3065 3445 3835 4600 5365 6135 6975 7825 8255 14080 15840 17600 18773 21120 23467 12288 13824 15360 16384 18432 20480 1637 1843 2050 2184 2460 2724 109 IS 12285 13665 14S65 16400 18160 1426 1608 1786 1906 2146 2381 9505 10720 11905 12765 14365 15875 For altitudes above 5000 ft high altitude ratings should be reduccd at the rate of 4% for each 1000 ft "Butane-Air Gas. 525 Biu, 1 16 *p gr. COMPLIES WITH A.S.M.E. STANDARDS COMPLIES WITH NATIONAL SAFETY REQUIREMENTS - APPROVED BY AMERICAN GAS ASSOCIATION American Radiator Standard ^amtartj CORPORATION PITTSBURGH 30, PA. AMERlCAN-^tandard products, including the Standard Boiler, are all built to the same uniformly high quality and backed by the technical and manufacturing skill of (he Ameri can Radiator & Standard Sanitary Corporation, a name synonymous with health and comfort. 00103 HOT WATER SUPPLY "1 LOW COST ... ABUNDANT \VnEREvr.R ihcre is n demand for large quantities of rcnllv hot water . . . office Imildincs. schools, stores, factories . . . that demand can he clhcicntlv and economic ally supplied with a 1-G or 4-G Standard Boiler. Connected to a storage tank system as shown at right, with an external heat exchanger, the Standard Steam Boiler is especially suited to localities where it is not advisable to permit the domestic water being heated to pass directly through the I toiler. American-Standard gas fired boilers for hot water supply feature the same accu rate. completely automatic controls for which the regular line of gas boilers is famous. Ratings of the 1-G and 4-G Standard Boilers arc shown on this pace. For smaller system requirements, or direct type boilers, consult other AmericanStandard literature, or see your Heating Contractor. temperature AND PRESSURE STANDARD STEAM BOILERS FOR INDIRECT TYPE ("IS") SYSTEMS The above drawing illustrates a typical installation of the 1-G Steam Boiler in an indirect type hot water supply hook-up. The complete system is controlled by the Detroit 560 Thermotor Automatic Gas Valve, which operates in response to the temperature demands of an immersion operating control inserted in the storage tank. The ini- mersion control is electrically connected to the main gas valve, and can be easily set to desired degree of temper ature, with a range from 90 to 210, by an adjustment on the outside of the control. For data on regular control equipment furnished, see the current Price Book. RATINGS AND D A T A -- S T A N D A R D 1-G AND 4-G BOILERS WITH "IS" EQUIPMENT 1-G --< ALLOWS WATER PER HOUR Staml.ird Hoilrr Model N umlicr Mfd. Nat. Mixed and LP-Gjv; Hulanr.Air < .ts '525 Bin. 1 16 sp cri K.ve HQ* Rive IDO* R ive For installations at sea lovol end otovetions up to 2000 ft 1-1;s.4 l.GS-5 MIS.6 l-GS-7 1-GS-H 1 -G.N.9 l-GS-JO 2'>n 3X5 4H(| 575 l,T(| "'() X6S 215 290 360 430 505 5-5 650 175 230 290 345 405 46(1 520 For installations at olovetions of 2000 ft to 5000 ft l-GS-4 230 175 140 Mi's-5 31(1 230 185 1-GS.6 385 290 230 1-GN-7 4<,( 1 345 275 MiS-K 540 405 320 l-GS-9 61 5 460 370 l-GS-10 690 520 415 Hmler Model Number 4-t X-6 4-<;s-7 4-G.X-B 4-GS-9 4-GS-H) 4-GS-1 1 4-GS-I3 4-<;s-is 4-GS-17 4.GS.19 4-GS-2I 4-c;s-2: 4-GS-2S 4-GS-2B 4-GS-31 4.(15-33 4-GS-37 4-GS-41 4. GALLONS WATER PER HOUR For installations ol too lovol and olovotions up to 2000 ft Mfd. Nal. Mixed nn 1 LI'-Gnv. Butane-Air ( as '525 Htu. 1 16 v p gr i 60* Rive X<l* Rive 11H* Rive 960 1 1 50 1 340 1 540 1730 1920 2300 2690 3080 3460 3840 4040 6410 5190 5760 6150 6920 7690 720 Moll 1010 1150 1300 1440 1730 2020 2300 2600 28BO 3020 34BO 3890 4320 4610 5190 5750 570 i.90 X 10 920 |040 1 150 1 3R0 It.HI 1X40 2080 2300 2420 2760 3110 3460 3r.80 4150 4(>00 Far Installations el elevations 2000 ft to 5000 ft Mfd. Natural and N ixed las: Butane.Air ( as ' 525 Bill. 1 . 1 N p cr 60* Rive XO Rive ion* Rise XXO 1060 1230 1410 I5R0 1760 2110 2460 2820 317(1 3520 3700 4220 4750 5280 5640 6 340 7040 660 790 `>20 1060 1190 1320 1580 1850 2110 2 3B0 2640 27RO 3170 3560 3960 4220 4750 5280 5 30 6 3(1 740 K50 950 106ft 127ft 14X0 1690 1900 2110 2220 2540 2860 3170 3 380 3800 *220 l.O Rive 7-0 920 1070 1230 I 3X0 1540 1840 2150 2460 2760 3070 3230 3690 4140 4610 4910 5520 6140 LP-Ga* *il* Rise 3X0 XIO >20 1040 l 1 50 t 380 !6]U 1X40 2060 2300 2 420 2770 3110 3460 3690 4140 4610 100* Rise 4l.O 550 650 740 X 30 `>20 1 100 1290 1470 1660 1840 1930 2220 2490 2760 2950 3320 3790 I or altitude* ahuve 5000 ft high altitude ratings should be reduced at the rale of 4 0c for each 1000 ft above 5000 ft. FLUE SIZE RECOMMENDATIONS 00104 .Standard Boiier Model No l-G-4 M.-5 1-C.-6 l-G-7 1-G-S l-G-9 1-G-10 4-< ;-6 4-G-7 4-G-8 Ch mne> Height in Feet 10* 20 40 80 Diameter ' Inches) u,, 6 7 76 K 77 . X 7 9X" 9 > 8 9 '> 9 HI 9 9 1 1 10 10 1 I 11 10 X 8 8 9 9 10 Standard Boiler Model 4-G-9 4-G-10 4-G-1 1 4-G-13 4-G-15 4-G-17 4-G-19 4-G-21 4-G-22 4-G-25 Chimnev Height in Feet 10* 20 40 80 Diameter (Inches) 12 11 11 10 12 1 2 1 1 1 1 13 12 12 1 1 14 1 3 1 3 12 15 14 13 13 16 15 14 14 17 16 15 14 18 17 16 15 18 17 16 16 19 18 17 16 Standard Boiler Model No. Chimney Height in Feet 10* 20 40 80 Diameter Inches) 4-G-28 4-G-31 4-G-33 4-G-.37 4-G-41 4-G-22 4-G-25 4-G-28 4-G-3I 20 19 18 20 19 77 20 19 24 77 20 24 24 22 TWO BOILERS 26 24 77 26 26 24 28 26 26 30 28 26 17 18 19 20 20 77 77 24 26 'Flue sizes for 10' chimnevs arc for special installations where greater height is impossible or impractical. Standard boiler Model No. Ch mney Height in Feel to* 20 40 80 Diameter i Inches) 4-G-33 30 28 28 26 4-G-37 32 30 28 28 4-G-41 34 32 30 28 4-G-28 4-G-31 4-G-33 4-G-37 4-G-41 THREE BOILERS 32 30 -- 34 32 -- 36 32 -- 38 34 -- 40 36 . 30 30 32 34 34 ind sily onI hr i IIC no- o act lt*rs ich * if ta ; in ngs inbc idr itly 5. r to ini of onnee ing V FILE No. 30 CSniory, 1951} 1 - G STANDARD DATA AND DIMENSIONS Dimensions inches) Model Number R D I. l-C-4 57H U 10 l-Ci-5 *>9>i 7 33 l-G-6 (>av4 l-G-7 62H H 27 9 31 l-G-8 63 Vs ') 3S 1-0-9 US 10 39 I-G-10 OSH 10 43 4-G STANDARD DATA AND D I M E N S' i O ii S J o LAYOUT OF TAPPINGS An outstanding feature of larger Standard Boilers is the number of flow tappings provided. 1`or example, types 4-G-13 to 4-G-21 have four 6". tvpes 4-G-22 to 4-G-31 have six 6", and types 4-G-33 to 4-G-41 have eight G" flow tapping. Their use slows steam velocity and helps prevent entrainment of water. Illustrated below arc tvpical section assemblies of the 1-G and 4-G. The drawings show the flow and return tappings of the l-G-6. and flow and return tappings and top connecting nipple opening of the 4-G-33. These accurately machined sec tions are easily handled and assembled. LEFT: l-G BELOW: 4-G 2 5 fc Tap tFBR0oHOf_NRT Model Number 4-G-6 4-G-7 4-( ;-8 4-g-o 4-G-10 4-G-l 1 4-f;-u 4-(;-i5 4-G-17 4-G-l 9 4-G-21 4-G-22 4-G-25 4-G-28 4-C.-31 4-G-33 4-(.-3~ 4-( i-4! 4-G DIMENSIONS (INCHES) No. of Burners 10 12 14 16 18 20 24 28 32 36 40 42 48 34 00 04 ~ -> RO R "4 73 77 "7% 77'/: RO -5 77 771/4 77/2 80 "7 % -91A RO i' ~9V> 80 c -- -- -- -- -- -- 30% 34Vb 38% 42% 46% 34% 38% 42% 46% 38% 42% 46% DE M-- 12 -- 13 -- 14 -- 15 -- 16 -- 12 30% 13 34% 14 38% 15 42% 16 46% 13 34% 14 38% 13 42% 16 46% 14 38% l 3 42% 16 46% F -- -- -- -- -- -- 15%, 17% 17% 21% 23% 17% 17% 21% 23% 17% 21 % 23% L 27 31 35 37 43 47 61 ' 69' 77' 85! 73! 103' 115! 127' 137! 153i 169 ? 185! RATINGS AND DATA --1-G-FOR HOT WATER OR STEAM Mandard Holler Model Number l-GS-4 l-GS-5 1 *Gb*G l-GS-7 l-GS-8 l-GS-9 l-GS-10 For InstoHotioni of in IovoJ and oiovationt vp to 2000 ft \ t; fnnut MBH \ i* \ ()ut pm MHH strain nr \\ .ni^r sTF.AM VGA Sieam Ratine vp fi '< 1 nstailed Radiation 'sq fi) Mfd. Nat. Mix ed. LP-Gas. or Buiane- Air Gas 1 5 25 Btu. 1 1o sp er) .Standard Bmler Model Number WATER \ G. A IN atrr Installed (.jdiamm Ratine '*q In MBH It Mfd. Nat. Mixed. LP-Gas. or Butane- Air Gas '323 Btu. 1.1 6 sp er) 180 1-14 240 r: 300 244) 360 28H 420 336 480 384 540 432 oOO 800 1000 1200 1400 1600 1800 393 330 o70 810 030 1095 1240 l-OW-4 1-GVV-S, l-GVV-6 l-GW-7 l-GW-8 1-GW-9 1-GVV-JO oo0 1280 1600 1920 2240 2560 2880 107 '15 144 900 180 1200 216 1440 251 1675 287 1915 324 2160 Sue of Gas Connection nnches-IPS} ButaneAir-Gas Mfd Nat Mxd l.P- t52S Gas Gas Gas Gas Btu, 1 16 p er) 1 *'4 J4 1 1 '4 1 1 y4 l`/4 1'4 l 1 H l'/4 l'/2 1 w VA H 1% 1H 1H 2 1 '/4 1 \A 1 2 H4 1 2 Standard Boiler Model Number l-GS-4 l-GS-5 l-GS-6 l-GS-7 l-GS-8 l-GS-9 l-GS-10 A.G.A. Input MBH A.G.A. Output MBH Steam or Water 144 115.2 192 153.6 240 192 0 28B 230.4 336 268 8 384 307.2 432 345.6 For installations at oiovations 2000 ft to 5000 ft STEAM A.G.A. Steam Rating (sq ft) Installed Radiation <aq ft) Mfd, Nat, Mixed. LP-Gas, or Butane-Air Gas (525 Btu. 1.16 tp gr) 480 640 800 960 1120 1280 1440 310 420 530 640 755 865 980 Standard Boiler Model Number l-GW-4 l-GW-5 1-GW-6 l-GW-7 l-GW-8 l-GW-9 1-GW-10 WATER A.G.A. Water Installed Radiation Rating (sq fi) MBH >q ft Mfd, Nat, Mixed, LP-Gas, or fButane-Air Gas (525 Btu, 1.16 sp gr) 768 1024 1280 1536 1792 2048 2304 86 570 115 765 144 960 173 1150 201 1340 230 1535 259 1725 00105 For altitudes above 5000 ft high altitude raungs should be reduced at SOOOft. roMPiict WITU NiTtnim. FFETY RE0UIREMENTS - APPIt0VE0 BY AMERICAN GAS ASSOCIATION