– Fully sheeted duct furnaces mounted in a 16-gauge galvanized steel frame.
– Provides listed temperature rise and air side pressure drop performance.
– Each furnace includes an individual shutoff valve, flexible gas connector & union piped to properly sized supply header.
– Condensate drains pre-piped to a common header.
– Easy removal of any single duct furnace.
– All controls prewired to a sequencer for system control.
– Customer only needs to provide Power, “Call for Heat” and a 0-10 VDC signal.


Application Guidelines Product Specification User Guidelines OEM Instructions Submittal / Order Information

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Model NumberPDFAlt PDFPDF of Gas TrainPDF of Wiring DiagramMax Input MBHMax Output MBHMin Input MBHMin Output MBHNat. Gas Turndown RatioMax CFMMax APD @ Min RiseMax Temp RiseMin CFMMin APD @ Max RiseDim ADim BDim CDim DWeight (Lbs.)Total Amps 120VTotal Amps 230V
HDB-HHX-180-360PDFPDFPDFPDF3602923629.1610 to 190000.046045000.0140.6335.1378.417.1562385
HDB-HHX-200-400PDFPDFPDFPDF4003244032.410 to 1100000.046050000.0140.6335.1378.417.1562385
HDB-HHX 225-450PDFPDFPDFPDF4503644536.4510 to 1112500.076056250.0240.6335.1378.417.1562385
HDB-HHX 250-500PDFPDFPDFPDF5004055040.510 to 1125000.086062500.0240.6335.1378.417.1562385
HDB-HHX 270-540PDFPDFPDFPDF5404375443.7410 to 1135000.046067500.0140.6335.1378.417.1566985
HDB-HHX-180-540PDFPDFPDFPDF5404373629.1615 to 1135000.046067500.0160.1335.1378.417.15935127.5
HDB-HHX-200-600PDFPDFPDFPDF6004864032.415 to 1150000.046075000.0160.1335.1378.417.15935127.5
HDB-HHX 300-600PDFPDFPDFPDF6004866048.610 to 1150000.156075000.0440.6335.1378.417.1566985
HDB-HHX 315-630PDFPDFPDFPDF6305106351.0310 to 1157500.196078750.0540.6335.1378.417.1571585
HDB-HHX 225-675PDFPDFPDFPDF6755474536.4515 to 1168750.076084380.0260.1335.1378.417.15935127.5
HDB-HHX 350-700PDFPDFPDFPDF7005677056.710 to 1175000.246087500.0640.6335.1378.417.1571585
HDB-HHX 700-700PDFPDFPDF7005677056.710 to 1175000.2210052500.0230.634878.4197868
HDB-HHX 360-720PDFPDFPDFPDF7205837258.3210 to 1180000.36090000.0740.6335.1378.417.1575085
HDB-HHX-180-720PDFPDFPDFPDF7205833629.1620 to 1180000.046090000.0179.6335.1378.417.1512461610
HDB-HHX 250-750PDFPDFPDFPDF7506085040.515 to 1187500.086093750.0260.1335.1378.417.15935127.5
HDB-HHX 375-750PDFPDFPDFPDF7506087560.7510 to 1187500.336093750.0840.6335.1378.417.1576185
HDB-HHX 400-800PDFPDFPDFPDF8006488064.810 to 1200000.3860100000.0940.6335.1378.417.1576185
HDB-HHX-200-800PDFPDFPDFPDF8006484032.420 to 1200000.0460100000.0179.6335.1378.417.1512461610
HDB-HHX 800-800PDFPDFPDF8006488064.810 to 1200000.299066670.0330.634878.4197868
HDB-HHX 270-810PDFPDFPDFPDF8106565443.7415 to 1202500.1260101250.0360.1335.1378.417.151003.5127.5
HDB-HHX 225-900PDFPDFPDFPDF9007294536.4520 to 1225000.0760112500.0279.6335.1378.417.1512461610
HDB-HHX 300-900PDFPDFPDFPDF9007296048.615 to 1225000.1560112500.0460.1335.1378.417.15987127.5
HDB-HHX 900-900PDFPDFPDF9007299072.910 to 1225000.378084380.0530.634878.41981110
HDB-HHX-180-900PDFPDFPDFPDF9007293629.1625 to 1225000.0460112500.0199.1335.1378.417.1515582012.5
HDB-HHX 315-945PDFPDFPDFPDF9457656351.0315 to 1236250.1960118130.0560.1335.1378.417.151056127.5
HDB-HHX 500-1000PDFPDFPDFPDF10008101008110 to 1250000.7370107140.1345.6341.6478.42081610
HDB-HHX-200-1000PDFPDFPDFPDF10008104032.425 to 1250000.0460125000.0199.1335.1378.417.1515582012.5
HDB-HHX 1000-1000PDFPDFPDF10008101008110 to 1250000.579083330.0630.634878.41985010
HDB-HHX 250-1000PDFPDFPDFPDF10008105040.520 to 1250000.0860125000.0279.6335.1378.417.1512461610
HDB-HHX 350-1050PDFPDFPDFPDF10508507056.715 to 1262500.2460131250.0660.1335.1378.417.151056127.5
HDB-HHX 270-1080PDFPDFPDFPDF10808755443.7420 to 1270000.1260135000.0379.6335.1378.417.1513381610
HDB-HHX 360-1080PDFPDFPDFPDF10808757258.3215 to 1270000.360135000.0760.1335.1378.417.151125127.5
HDB-HHX 1100-1100PDFPDFPDF110089111089.110 to 1275000.698597060.0930.634878.41985010
HDB-HHX 375-1125PDFPDFPDFPDF11259117560.7515 to 1281250.3360140630.0860.1335.1378.417.151125127.5
HDB-HHX 225-1125PDFPDFPDFPDF11259114536.4525 to 1281250.0760140630.0299.1335.1378.417.15155820
HDB-HHX 1200-1200PDFPDFPDF120097212097.210 to 1300000.8270128570.1530.634878.41985010
HDB-HHX 600-1200PDFPDFPDFPDF120097212097.210 to 1300001.3180112500.1945.6348.1478.42090710
HDB-HHX 400-1200PDFPDFPDFPDF12009728064.815 to 1300000.3860150000.0960.1335.1378.417.151125127.5
HDB-HHX 300-1200PDFPDFPDFPDF12009726048.620 to 1300000.1560150000.0479.6335.1378.417.1513441610
HDB-HHX 250-1250PDFPDFPDFPDF125010135040.525 to 1312500.0860156250.0299.1335.1378.417.15155820
HDB-HHX 1250-1250PDFPDFPDF12501013125101.2510 to 1312500.8965144230.1930.634878.41985010
HDB-HHX 315-1260PDFPDFPDFPDF126010216351.0320 to 1315000.1960157500.0579.6335.1378.417.1514321610
HDB-HHX 270-1350PDFPDFPDFPDF135010945443.7425 to 1337500.1260168750.0399.1335.1378.417.151672.520
HDB-HHX 700-1400PDFPDFPDF140011347056.720 to 1350000.22100105000.0259.634878.419142916
HDB-HHX 350-1400PDFPDFPDFPDF140011347056.720 to 1350000.2460175000.0679.6335.1378.417.1513961610
HDB-HHX 360-1440PDFPDFPDFPDF144011667258.3220 to 1360000.360180000.0779.6335.1378.417.1515001610
HDB-HHX 500-1500PDFPDFPDFPDF150012151008115 to 1375000.7370160710.1367.6341.6478.4201237157.5
HDB-HHX 375-1500PDFPDFPDFPDF150012157560.7520 to 1375000.3360187500.0879.6335.1378.417.1514881610
HDB-HHX 300-1500PDFPDFPDFPDF150012156048.625 to 1375000.1560187500.0499.1335.1378.417.15171020
HDB-HHX 315-1575PDFPDFPDFPDF157512766351.0325 to 1393750.1960196880.0599.1335.1378.417.15179020
HDB-HHX 800-1600PDFPDFPDF160012968064.820 to 1400000.2990133330.0359.634878.419142916
HDB-HHX 400-1600PDFPDFPDFPDF160012968064.820 to 1400000.3860200000.0979.6335.1378.417.1514881610
HDB-HHX 350-1750PDFPDFPDFPDF175014187056.725 to 1437500.2460218750.0699.1335.1378.417.1517372012.5
HDB-HHX 900-1800PDFPDFPDF180014589072.920 to 1450000.3780168750.0559.634878.419147520
HDB-HHX 600-1800PDFPDFPDFPDF1800145812097.215 to 1450001.3180168750.1967.6348.1478.4201374157.5
HDB-HHX 360-1800PDFPDFPDFPDF180014587258.3225 to 1450000.360225000.0799.1335.1378.417.15187520
HDB-HHX 375-1875PDFPDFPDFPDF187515197560.7525 to 1468750.3360234380.0899.1335.1378.417.1518522012.5
HDB-HHX 500-2000PDFPDFPDFPDF200016201008120 to 1500000.7370214290.1389.6341.6478.420164520
HDB-HHX 400-2000PDFPDFPDFPDF200016208064.825 to 1500000.3860250000.0999.1335.1378.417.1518522012.5
HDB-HHX 1000-2000PDFPDFPDF200016201008120 to 1500000.5790166670.0659.634878.419154420
HDB-HHX 700-2100PDFPDFPDF210017017056.730 to 1525000.22100157500.0288.634878.419203024
HDB-HHX 1100-2200PDFPDFPDF2200178211089.120 to 1550000.6985194120.0959.634878.419154420
HDB-HHX 800-2400PDFPDFPDF240019448064.830 to 1600000.2990200000.0388.634878.419203024
HDB-HHX 1200-2400PDFPDFPDF2400194412097.220 to 1600000.8270257140.1559.634878.419154420
HDB-HHX 600-2400PDFPDFPDFPDF2400194412097.220 to 1600001.3180225000.1989.6348.1478.420159420
HDB-HHX 500-2500PDFPDFPDFPDF250020251008125 to 1625000.7370267860.13111.6341.6478.420188325
HDB-HHX 1250-2500PDFPDFPDF25002025125101.2520 to 1625000.8965288460.1959.634878.419154420
HDB-HHX 900-2700PDFPDFPDF270021879072.930 to 1675000.3780253130.0588.634878.419210530
HDB-HHX 700-2800PDFPDFPDF280022687056.740 to 1700000.22100210000.02117.634878.419270632
HDB-HHX 1000-3000PDFPDFPDF300024301008130 to 1750000.5790250000.0688.634878.419222230
HDB-HHX 600-3000PDFPDFPDFPDF3000243012097.225 to 1750001.3180281250.19111.6348.1478.420203925
HDB-HHX 800-3200PDFPDFPDF320025928064.840 to 1800000.2990266670.03117.634878.419270632
HDB-HHX 1100-3300PDFPDFPDF3300267311089.130 to 1825000.6985291180.0988.634878.419222230
HDB-HHX 900-3600PDFPDFPDF360029169072.940 to 1900000.3780337500.05117.634878.419280640
HDB-HHX 1200-3600PDFPDFPDF3600291612097.230 to 1900000.8270385710.1588.634878.419222230
HDB-HHX 1250-3750PDFPDFPDF37503038125101.2530 to 1937500.8965432690.1988.634878.419222230
HDB-HHX 1000-4000PDFPDFPDF400032401008140 to 11000000.5790333330.06117.634878.419296240
HDB-HHX 1100-4400PDFPDFPDF4400356411089.140 to 11100000.6985388240.09117.634878.419296240
HDB-HHX 1200-4800PDFPDFPDF4800388812097.240 to 11200000.8270514290.15117.634878.419296240
HDB-HHX 1250-5000PDFPDFPDF50004050125101.2540 to 11250000.8965576920.19117.634878.419296240
Note: For Propane gas, turndown is 60% of stated natural gas turndown.