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// CODE SNIPPET

1103.1 Refrigerant Classification

Mechanical Code 2015 of Utah > 11 Refrigeration > 1103 Refrigeration System Classification > 1103.1 Refrigerant Classification
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Refrigerants shall be classified in accordance with ASHRAE 34 as listed in Table 1103.1.

TABLE 1103.1 REFRIGERANT CLASSIFICATION, AMOUNT AND OEL

CHEMICAL
REFRIGERANT		 FORMULA CHEMICAL NAME OF BLEND REFRIGERANT
CLASSIFICATION		 AMOUNT OF REFRIGERANT PER OCCUPIED SPACE [F] DEGREES OF
HAZARDa
Pounds per 1,000
cubic feet		 ppm g/m3 OELe
R-11d CCl3F trichlorofluoromethane A1 0.39 1,100 6.2 C1,000 2-0-0b
R-12d CCl2F2 dichlorodifluoromethane A1 5.6 18,000 90 1,000 2-0-0b
R-13d CClF3 chlorotrifluoromethane A1 ‒ ‒ ‒ 1,000 2-0-0b
R-13B1d CBrF3 bromotrifluoromethane A1 ‒ ‒ ‒ 1,000 2-0-0b
R-14 CF4 tetrafluoromethane (carbon tetrafluoride) A1 25 110,000 400 1,000 2-0-0b
R-22 CHClF2 chlorodifluoromethane A1 13 59,000 210 1,000 2-0-0b
R-23 CHF3 trifluoromethane (fluoroform) A1 7.3 41,000 120 1,000 2-0-0b
R-32 CH2F2 difluoromethane (methylene fluoride) A2f 4.8 36,000 77 1,000 1-4-0
R-113d CCl2FCClF2 1,1,2-trichloro-1,2,2-trifluoroethane A1 1.2 2,600 20 1,000 2-0-0b
R-114d CClF2CClF2 1,2-dichloro-1,1,2,2-tetrafluoroethane A1 8.7 20,000 140 1,000 2-0-0b
R-115 CClF2CF3 chloropentafluoroethane A1 47 120,000 760 1,000 ‒
R-116 CF3CF3 hexafluoroethane A1 34 97,000 550 1,000 1-0-0
R-123 CHCl2CF3 2,2-dichloro-1,1,1-trifluoroethane B1 3.5 9,100 57 50 2-0-0b
R-124 CHClFCF3 2-chloro-1,1,1,2-tetrafluoroethane A1 3.5 10,000 56 1,000 2-0-0b
R-125 CHF2CF3 pentafluoroethane A1 23 75,000 370 1,000 2-0-0b
R-134a CH2FCF3 1,1,1,2-tetrafluoroethane A1 13 50,000 210 1,000 2-0-0b
R-141b CH3CCl2F 1,1-dichloro-1-fluoroethane ‒ 0.78 2,600 12 500 2-1-0
R-142b CH3CClF2 1-chloro-1,1-difluoroethane A2 5.1 20,000 83 1,000 2-4-0
R-143a CH3CF3 1,1,1-trifluoroethane A2f 4.5 21,000 70 1,000 2-0-0b
R-152a CH3CHF2 1,1-difluoroethane A2 2.0 12,000 32 1,000 1-4-0
R-170 CH3CH3 ethane A3 0.54 7,000 8.7 1,000 2-4-0
R-E170 CH3OCH3 Methoxymethane (dimethyl ether) A3 1.0 8,500 16 1,000 ‒
R-218 CF3CF2CF3 octafluoropropane A1 43 90,000 690 1,000 2-0-0b
R-227ea CF3CHFCF3 1,1,1,2,3,3,3-heptafluoropropane A1 36 84,000 580 1,000 ‒
R-236fa CF3CH2CF3 1,1,1,3,3,3-hexafluoropropane A1 21 55,000 340 1,000 2-0-0b
R-245fa CHF2CH2CF3 1,1,1,3,3-pentafluoropropane B1 12 34,000 190 300 2-0-0b
R-290 CH3CH2CH3 propane A3 0.56 5,300 9.5 1,000 2-4-0
R-C318 -(CF2)4- octafluorocyclobutane A1 41 80,000 660 1,000 ‒
R-400d zeotrope R-12/114 (50.0/50.0) A1 10 28,000 160 1,000 2-0-0b
R-400d zeotrope R-12/114 (60.0/40.0) A1 11 30,000 170 1,000
R-401A zeotrope R-22/152a/124 (53.0/13.0/34.0) A1 6.6 27,000 110 1,000 2-0-0b


(continued)

TABLE 1103.1‒continued REFRIGERANT CLASSIFICATION, AMOUNT AND OEL

CHEMICAL
REFRIGERANT		 FORMULA CHEMICAL NAME OF BLEND REFRIGERANT
CLASSIFICATION		 AMOUNT OF REFRIGERANT PER OCCUPIED SPACE [F] DEGREES OF
HAZARDa
Pounds per 1,000
cubic feet		 ppm g/m3 OELe
R-401B zeotrope R-22/152a/124 (61.0/11.0/28.0) A1 7.2 30,000 120 1,000 2-0-0b
R-401C zeotrope R-22/152a/124 (33.0/15.0/52.0) A1 5.2 20,000 84 1,000 2-0-0b
R-402A zeotrope R-125/290/22 (60.0/2.0/38.0) A1 17 66,000 270 1,000 2-0-0b
R-402B zeotrope R-125/290/22 (38.0/2.0/60.0) A1 15 63,000 240 1,000 2-0-0b
R-403A zeotrope R-290/22/218 (5.0/75.0/20.0) A2 7.6 33,000 120 1,000 2-0-0b
R-403B zeotrope R-290/22/218 (5.0/56.0/39.0) A1 18 70,000 290 1,000 2-0-0b
R-404A zeotrope R-125/143a/134a (44.0/52.0/4.0) A1 31 130,000 500 1,000 2-0-0b
R-405A zeotrope R-22/152a/142b/C318 (45.0/7.0/5.5/2.5) ‒ 16 57,000 260 1,000 ‒
R-406A zeotrope R-22/600a/142b (55.0/4.0/41.0) A2 4.7 21,000 25 1,000 ‒
R-407A zeotrope R-32/125/134a (20.0/40.0/40.0) A1 19 83,000 300 1,000 2-0-0b
R-407B zeotrope R-32/125/134a (10.0/70.0/20.0) A1 21 79,000 330 1,000 2-0-0b
R-407C zeotrope R-32/125/134a (23.0/25.0/52.0) A1 18 81,000 290 1,000 2-0-0b
R-407D zeotrope R-32/125/134a (15.0/15.0/70.0) A1 16 68,000 250 1,000 2-0-0b
R-407E zeotrope R-32/125/134a (25.0/15.0/60.0) A1 17 80,000 280 1,000 2-0-0b
R-407F zeotrope R-32/125/134a (30.0/30.0/40.0) A1 20 95,000 320 1,000 ‒
R-408A zeotrope R-125/143a/22 (7.0/46.0/47.0) A1 21 95,000 340 1,000 2-0-0b
R-409A zeotrope R-22/124/142b (60.0/25.0/15.0) A1 7.1 29,000 110 1,000 2-0-0b
R-409B zeotrope R-22/124/142b (65.0/25.0/10.0) A1 7.3 30,000 120 1,000 2-0-0b
R-410A zeotrope R-32/125 (50.0/50.0) A1 26 140,000 420 1,000 2-0-0b
R-410B zeotrope R-32/125 (45.0/55.0) A1 27 140,000 430 1,000 2-0-0b
R-411A zeotrope R-127/22/152a (1.5/87.5/11.0) A2 2.9 14,000 46 990 ‒
R-411B zeotrope R-1270/22/152a (3.0/94.0/3.0) A2 2.8 13,000 45 980 ‒
R-412A zeotrope R-22/218/142b (70.0/5.0/25.0) A2 5.1 22,000 82 1,000 ‒
R-413A zeotrope R-218/134a/600a (9.0/88.0/3.0) A2 5.8 22,000 94 1,000 ‒
R-414A zeotrope R-22/124/600a/142b (51.0/28.5/4.0/16.5) A1 6.4 26,000 100 1,000 ‒
R-414B zeotrope R-22/124/600a/142b (50.0/39.0/1.5/9.5) A1 6.0 23,000 95 1,000 ‒
R-415A zeotrope R-22/152a (82.0/18.0) A2 2.9 14,000 47 1,000 ‒
R-415B zeotrope R-22/152a (25.0/75.0) A2 2.1 12,000 34 1,000 ‒
R-416A zeotrope R-134a/124/600 (59.0/39.5/1.5) A1 3.9 14,000 62 1,000 2-0-0b
R-417A zeotrope R-125/134a/600 (46.6/50.0/3.4) A1 3.5 13,000 56 1,000 2-0-0b
R-417B zeotrope R-125/134a/600 (79.0/18.3/2.7) A1 4.3 15,000 70 1,000 ‒
R-418A zeotrope R-290/22/152a (1.5/96.0/2.5) A2 4.8 22,000 77 1000 ‒


(continued)

TABLE 1103.1‒continued REFRIGERANT CLASSIFICATION, AMOUNT AND OEL

CHEMICAL
REFRIGERANT		 FORMULA CHEMICAL NAME OF BLEND REFRIGERANT
CLASSIFICATION		 AMOUNT OF REFRIGERANT PER OCCUPIED SPACE [F] DEGREES OF
HAZARDa
Pounds per 1,000
cubic feet		 ppm g/m3 OELe
R-419A zeotrope R-125/134a/E170 (77.0/19.0/4.0) A2 4.2 15,000 67 1,000 ‒
R-420A zeotrope R-134a/142b (88.0/12.0) A1 12 45,000 190 1,000 2-0-0b
R-421A zeotrope R-125/134a (58.0/42.0) A1 17 61,000 280 1,000 2-0-0b
R-421B zeotrope R-125/134a (85.0/15.0) A1 21 69,000 330 1,000 2-0-0b
R-422A zeotrope R-125/134a/600a (85.1/11.5/3.4) A1 18 63,000 290 1,000 2-0-0b
R-422B zeotrope R-125/134a/600a (55.0/42.0/3.0) A1 16 56,000 250 1,000 2-0-0b
R-422C zeotrope R-125/134a/600a (82.0/15.0/3.0) A1 18 62,000 290 1,000 2-0-0b
R-422D zeotrope R-125/134a/600a (65.1/31.5/3.4) A1 16 58,000 260 1,000 2-0-0b
R-423A zeotrope R-134a/227ea (52.5/47.5) A1 19 59,000 310 1,000 2-0-0c
R-424A zeotrope R-125/134a/600a/600/601a (50.5/47.0/0.9/1.0/0.6) A1 6.2 23,000 100 970 2-0-0b
R-425A zoetrope R-32/134a/227ea (18.5/69.5/12.0) A1 16 72,000 260 1,000 2-0-0b
R-426A zeotrope R-125/134a/600a/601a (5.1/93.0/1.3/0.6) A1 5.2 20,000 83 990 ‒
R-427A zeotrope R-32/125/143a/134a (15.0/25.0/10.0/50.0) A1 18 79,000 290 1,000 2-1-0
R-428A zeotrope R-125/143a/290/600a (77.5/20.0/0.6/1.9) A1 23 83,000 370 1,000 ‒
R-429A zeotrope R-E170/152a/600a (60.0/10.0/30.0) A3 0.81 6,300 13 1,000 ‒
R-430A zeotrope R-152a/600a (76.0/24.0) A3 1.3 8,000 21 1,000 ‒
R-431A zeotrope R-290/152a (71.0/29.0) A3 0.69 5,500 11 1,000 ‒
R-432A zeotrope R-1270/E170 (80.0/20.0) A3 0.13 1,200 2.1 700 ‒
R-433A zeotrope R-1270/290 (30.0/70.0) A3 0.34 3,100 5.5 880 ‒
R-433B zeotrope R-1270/290 (5.0-95.0) A3 0.51 4,500 8.1 950 ‒
R-433C zeotrope R-1270/290 (25.0-75.0) A3 0.41 3,600 6.6 790 ‒
R-434A zeotrope R-125/143a/600a (63.2/18.0/16.0/2.8) A1 20 73,000 320 1,000 ‒
R-435A zeotrope R-E170/152a (80.0/20.0) A3 1.1 8,500 17 1,000 ‒
R-436A zeotrope R-290/600a (56.0/44.0) A3 0.50 4,000 8.1 1,000 ‒
R-436B zeotrope R-290/600a (52.0/48.0) A3 0.51 4,000 8.1 1,000 ‒
R-437A zeotrope R-125/134a/600/601 (19.5/78.5/1.4/0.6) A1 5.0 19,000 82 990 ‒
R-438A zeotrope R-32/125/134a/600/601a (8.5/45.0/44.2/1.7/0.6) A1 4.9 20,000 79 990 ‒
R-439A zeotrope R-32/125/600a (50.0/47.0/3.0) A2 4.7 26,000 76 990 ‒
R-440A zeotrope R-290/134a/152a (0.6/1.6/97.8) A2 1.9 12,000 31 1,000 ‒
R-441A zeotrope R-170/290/600a/600 (3.1/54.8/6.0/36.1) A3 0.39 3,200 6.3 1,000 ‒
R-442A zeotrope R-32/125/134a/152a/227ea (31.0/31.0/30.0/3.0/5.0) A1 21 100,000 330 1,000 ‒


(continued)

TABLE 1103.1‒continued REFRIGERANT CLASSIFICATION, AMOUNT AND OEL

CHEMICAL
REFRIGERANT		 FORMULA CHEMICAL NAME OF BLEND REFRIGERANT
CLASSIFICATION		 AMOUNT OF REFRIGERANT PER OCCUPIED SPACE [F] DEGREES OF
HAZARDa
Pounds per 1,000
cubic feet		 ppm g/m3 OELe
R-500e azeotrope R-12/152a (73.8/26.2) A1 7.6 30,000 120 1,000 2-0-0b
R-501d azeotrope R-22/12 (75.0/25.0) A1 13 54,000 210 1,000 ‒
R-502e azeotrope R-22/115 (48.8/51.2) A1 21 73,000 330 1,000 2-0-0b
R-503e azeotrope R-23/13 (40.1/59.9) ‒ ‒ ‒ ‒ 1,000 2-0-0b
R-504d azeotrope R-32/115 (48.2/51.8) ‒ 28 140,000 450 1,000 ‒
R-507A azeotrope R-125/143a (50.0/50.0) A1 32 130,000 520 1,000 2-0-0b
R-508A azeotrope R-23/116 (39.0/61.0) A1 14 55,000 220 1,000 2-0-0b
R-508B azeotrope R-23/116 (46.0/54.0) A1 13 52,000 200 1,000 2-0-0b
R-509A azeotrope R-22/218 (44.0/56.0) A1 24 75,000 390 1,000 2-0-0b
R-510A azeotrope R-E170/600a (88.0/12.0) A3 0.87 7,300 14 1,000 ‒
R-511A azeotrope R-290/E170 (95.0/5.0) A3 0.59 5,300 9.5 1,000 ‒
R-512A azeotrope R-134a/152a (5.0/95.0) A2 1.9 11,000 31 1,000 ‒
R-600 CH3CH2CH2CH3 butane A3 0.15 1,000 2.4 1,000 1-4-0
R-600a CH(CH3)2CH3 2-methylpropane (isobutane) A3 0.59 4,000 9.6 1,000 2-4-0
R-601 CH3CH2CH2 CH2 CH3 pentane A3 0.18 1,000 2.9 600 ‒
R-601a (CH3)2CHCH2CH3 2-methylbutane (isopentane) A3 0.18 1,000 2.9 600 ‒
R-717 NH3 ammonia B2f 0.014 320 0.22 25 3-3-0c
R-718 H2O water A1 ‒ ‒ ‒ ‒ 0-0-0
R-744 CO2 carbon dioxide A1 4.5 40,000 72 5,000 2-0-0b
R-1150 CH2=CH2 ethene (ethylene) A3 ‒ ‒ ‒ 200 1-4-2
R-1234yf CF3CF=CH2 2,3,3,3-tetrafluoro-1 propene A2f 4.7 16,000 75 500 ‒
R-1234ze(E) CF3CH=CHF trans-1,3,3,3-tetrafluoro-1-propene A2f 4.7 16,000 75 800 ‒
R-1270 CH3CH=CH2 Propene (propylene) A3 0.1 1,000 1.7 500 1-4-1

For SI: 1 pound = 0.454 kg, 1 cubic foot = 0.0283 m3.
a. Degrees of hazard are for health, fire, and reactivity, respectively, in accordance with NFPA 704.
b. Reduction to 1-0-0 is allowed if analysis satisfactory to the code official shows that the maximum concentration for a rupture or full loss of refrigerant charge would not exceed the IDLH, considering both the refrigerant quantity and room volume .
c. For installations that are entirely outdoors, use 3-1-0.
d. Class I ozone depleting substance; prohibited for new installations.
e. Occupational Exposure Limit based on the OSHA PEL, ACGIH TLV-TWA, the AIHA WEEL or consistent value on a time-weighted average (TWA) basis (unless noted C for ceiling) for an 8 hr/d and 40 hr/wk.
f. The ASHRAE Standard 34 flammability classification for this refrigerant is 2L, which is a subclass of Class 2.

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