Product Overview

Commercial Gas
Water Heaters
Page 5 of 6
AOSCG10215
GAS LINE CONNECTION SIZESTORAGE CAPACITY
RECOVERY CAPACITY
Recovery capacities are based on AHRI rated thermal efficiencies.
Model Number Type of Gas
Input
Thermal Efficiency
BTU/HR kW
BTHL-150A Natural/Propane 150,000 44 96%
BTHL-199A Natural/Propane 199,900 58 95%
BTHL-250A Natural/Propane 250,000 73 94%
BTHL-300A Natural/Propane 300,000 88 94%
BTHL-400A Natural/Propane 399,900 117 93%
BTHL-500A Natural/Propane 499,900 146 92%
Model
Number
U.S. GALLONS AND LITRES/HR AT TEMPERATURE RISE INDICATED
Approx.
Capacity
°F 30° F 40° F 50° F 60° F 70° F 80° F 90° F 100° F 110° F 120° F 130° F 140° F
°C 17° C 22° C 28° C 33° C 39° C 44° C 50° C 56° C 61° C 67° C 72° C 78° C
BTHL-150A
250 U.S. Gals. GPH 582 436 349 291 249 218 194 175 159 145 134 125
946 Litres LPH 2202 1652 1321 1101 944 826 734 661 601 551 508 472
BTHL-199A
250 U.S. Gals. GPH 767 575 460 384 329 288 256 230 209 192 177 164
946 Litres LPH 2904 2178 1743 1452 1245 1089 968 871 792 726 670 622
BTHL-250A
250 U.S. Gals. GPH 949 712 570 475 407 356 316 285 259 237 219 203
946 Litres LPH 9594 2695 2156 1797 1540 1348 1198 1078 980 898 829 770
BTHL-300A
220 U.S. Gals. GPH 1139 855 684 570 488 427 380 342 311 285 263 244
832 Litres LPH 4313 3234 2588 2156 1848 1617 1438 1294 1176 1078 995 924
BTHL-400A
220 U.S. Gals. GPH 1503 1127 902 751 644 563 501 451 410 376 347 322
832 Litres LPH 5688 4266 3413 2844 2438 2133 1896 1706 1551 1422 1313 1219
BTHL-500A
220 U.S. Gals. GPH 1858 1394 1115 929 796 697 619 557 507 465 429 398
832 Litres LPH 7033 5275 4220 3517 3014 2638 2344 2110 1918 1758 1623 1507
Model Number U.S. Gallons Liters
BTHL-150A 250 946
BTHL-199A 250 946
BTHL-250A 250 946
BTHL-300A 220 833
BTHL-400A 220 833
BTHL-500A 220 833
Model Number Series Natural Gas Propane Gas
BTHL-150A 300/301 3/4" NPT 3/4" NPT
BTHL-199A 300/301 3/4" NPT 3/4" NPT
BTHL-250A 300/301 3/4" NPT 3/4" NPT
BTHL-300A 300/301 1-1/4" NPT 1-1/4" NPT
BTHL-400A 300/301 1-1/4" NPT 1-1/4" NPT
BTHL-500A 300/301 1-1/2" NPT 1-1/4" NPT