Standard Rack Assembly

– 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.

Indoor Venting Kit

– Custom Heat Fab, SAF-T, AL294C stainless construction.
– Category 1 rated common vent system to B-vent adapter.
– Provides proper venting of flue gases and prevents flue gas recirculation into burner combustion air supply.


Select An Efficiency:

81%80%

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

Model NumberPDFAlt PDFPDF of Gas TrainPDF of Wiring DiagramMax Input MBHMax Output MBHMin Input MBHMin Output MBHNat. Gas Turndown RatioMax Ind. HX Input# of HX'sMax CFMMax APD @ Min RiseMax Temp RiseMin CFMMin APD @ Max RiseDim ADim BDim CDim DWeight (Lbs.)Total Amps 120VTotal Amps 208V 230V
HDB-HHX-180-360-IPDFPDFPDF3602923629.1610 to 1180290000.026045000.0140.6335.1378.417.1585
HDB-HHX-200-400-IPDFPDFPDF4003244032.410 to 12002100000.026050000.0140.6335.1378.417.1585
HDB-HHX 225-450-IPDFPDFPDF4503644536.4510 to 12252112500.036056250.0140.6335.1378.417.1562385
HDB-HHX 250-500-IPDFPDFPDF5004055040.510 to 12502125000.046062500.0140.6335.1378.417.1562385
HDB-HHX 270-540-IPDFPDFPDF5404375443.7410 to 12702135000.056067500.0140.6335.1378.417.1566985
HDB-HHX-180-540-IPDFPDFPDF5404373629.1615 to 11803135000.026067500.0160.1335.1378.417.15127.5
HDB-HHX-200-600-IPDFPDFPDF6004864032.415 to 12003150000.026075000.0160.1335.1378.417.15127.5
HDB-HHX 300-600-IPDFPDFPDF6004866048.610 to 13002150000.066075000.0240.6335.1378.417.1566985
HDB-HHX 315-630-IPDFPDFPDF6305106351.0310 to 13152157500.086078750.0240.6335.1378.417.1571585
HDB-HHX 225-675-IPDFPDFPDF6755474536.4515 to 12253168750.036084380.0160.1335.1378.417.15935127.5
HDB-HHX 350-700-IPDFPDFPDF7005677056.710 to 13502175000.16087500.0340.6335.1378.417.1571585
HDB-HHX 700-700-IPDFPDF7005677056.710 to 17001175000.1510052500.028578
HDB-HHX 360-720-IPDFPDFPDF7205837258.3210 to 13602180000.126090000.0340.6335.1378.417.1575085
HDB-HHX-180-720-IPDFPDFPDF7205833629.1620 to 11804180000.026090000.0179.6335.1378.417.151610
HDB-HHX 250-750-IPDFPDFPDF7506087560.7515 to 12503187500.046093750.0160.1335.1378.417.15935127.5
HDB-HHX 375-750-IPDFPDFPDF7506087560.7510 to 13752187500.136093750.0440.6335.1378.417.1576185
HDB-HHX 400-800-IPDFPDFPDF8006488064.810 to 14002200000.1460100000.0440.6335.1378.417.1576185
HDB-HHX-200-800-IPDFPDFPDF8006484032.420 to 12004200000.0260100000.0179.6335.1378.417.151610
HDB-HHX 800-800-IPDFPDF8006488064.810 to 18001200000.199066670.038578
HDB-HHX 270-810-IPDFPDFPDF8106565443.7415 to 12703202500.0560101250.0160.1335.1378.417.151003.5127.5
HDB-HHX 225-900-IPDFPDFPDF9007299072.920 to 12254225000.0360112500.0179.6335.1378.417.1512461610
HDB-HHX 300-900-IPDFPDFPDF9007296048.615 to 13003225000.0660112500.0260.1335.1378.417.15987127.5
HDB-HHX 900-900-IPDFPDF9007299072.910 to 19001225000.248084380.0488210
HDB-HHX-180-900-IPDFPDFPDF9007293629.1625 to 11805225000.0260112500.0199.1335.1378.417.152012.5
HDB-HHX 315-945-IPDFPDFPDF9457656351.0315 to 13153236250.0860118130.0260.1335.1378.417.151056127.5
HDB-HHX 500-1000-IPDFPDFPDF10008101008110 to 15002250000.2760125000.0845.6341.6478.42081610
HDB-HHX-200-1000-IPDFPDFPDF10008104032.425 to 12005250000.0260125000.0199.1335.1378.417.152012.5
HDB-HHX 1000-1000-IPDFPDF10008101008110 to 110001250000.349083330.0592110
HDB-HHX 250-1000-IPDFPDFPDF10008105040.520 to 12504250000.0460125000.0179.6335.1378.417.1512461610
HDB-HHX 350-1050-IPDFPDFPDF10508507056.715 to 13503262500.160131250.0360.1335.1378.417.151056127.5
HDB-HHX 270-1080-IPDFPDFPDF10808755443.7420 to 12704270000.0560135000.0179.6335.1378.417.1513381610
HDB-HHX 360-1080-IPDFPDFPDF10808757258.3215 to 13603270000.1260135000.0360.1335.1378.417.151125127.5
HDB-HHX 1100-1100-IPDFPDF110089111089.110 to 111001275000.418597060.0692110
HDB-HHX 375-1125-IPDFPDFPDF11259117560.7515 to 13753281250.1360140630.0460.1335.1378.417.151125127.5
HDB-HHX 225-1125-IPDFPDFPDF1125911112.591.12525 to 12255281250.0360140630.0199.1335.1378.417.15155820
HDB-HHX 1200-1200-IPDFPDF120097212097.210 to 112001300000.4870128570.192110
HDB-HHX 600-1200-IPDFPDFPDF120097212097.210 to 16002300000.4660150000.1345.6348.1478.42090710
HDB-HHX 400-1200-IPDFPDFPDF12009728064.815 to 14003300000.1460150000.0460.1335.1378.417.151125127.5
HDB-HHX 300-1200-IPDFPDFPDF120097212097.220 to 13004300000.0660150000.0279.6335.1378.417.1513441610
HDB-HHX 250-1250-IPDFPDFPDF12501013125101.2525 to 12505250000.0460125000.0199.1335.1378.417.15155820
HDB-HHX 1250-1250-IPDFPDF12501013125101.2510 to 112501312500.5265144230.1292110
HDB-HHX 315-1260-IPDFPDFPDF12601021126102.0620 to 13154315000.0860157500.0279.6335.1378.417.1514321610
HDB-HHX 270-1350-IPDFPDFPDF135010945443.7425 to 12705337500.0560168750.0199.1335.1378.417.151672.520
HDB-HHX 700-1400-IPDFPDF140011347056.720 to 17002350000.15100105000.02157116
HDB-HHX 350-1400-IPDFPDFPDF140011347056.720 to 13504350000.160175000.0379.6335.1378.417.1513961610
HDB-HHX 360-1440-IPDFPDFPDF144011667258.3220 to 13604360000.1260180000.0379.6335.1378.417.1515001610
HDB-HHX 500-1500-IPDFPDFPDF150012151008115 to 15003375000.2760187500.0867.6341.6478.4201237157.5
HDB-HHX 375-1500-IPDFPDFPDF150012157560.7520 to 13754375000.1360187500.0479.6335.1378.417.1514881610
HDB-HHX 300-1500-IPDFPDFPDF15001215150121.525 to 13005375000.0660187500.0299.1335.1378.417.15171020
HDB-HHX 315-1575-IPDFPDFPDF15751276157.5127.57525 to 13155393750.0860196880.0299.1335.1378.417.15179020
HDB-HHX 800-1600-IPDFPDF160012968064.820 to 18002400000.1990133330.03157116
HDB-HHX 400-1600-IPDFPDFPDF160012968064.820 to 14004400000.1460200000.0479.6335.1378.417.1514881610
HDB-HHX 350-1750-IPDFPDFPDF175014187056.725 to 13505437500.160218750.0399.1335.1378.417.1517372012.5
HDB-HHX 900-1800-IPDFPDF180014589072.920 to 19002450000.2480168750.04161715
HDB-HHX 600-1800-IPDFPDFPDF1800145812097.215 to 16003300000.4660150000.1367.6348.1478.4201015207.5
HDB-HHX 360-1800-IPDFPDFPDF180014587258.3225 to 13605450000.1260225000.0399.1335.1378.417.15187520
HDB-HHX 375-1875-IPDFPDFPDF187515197560.7525 to 13755468750.1360234380.0499.1335.1378.417.1518522012.5
HDB-HHX 500-2000-IPDFPDFPDF200016201008120 to 15004500000.2760250000.0889.6341.6478.420164520
HDB-HHX 400-2000-IPDFPDFPDF200016208064.825 to 14005500000.1460250000.0499.1335.1378.417.1518522012.5
HDB-HHX 1000-2000-IPDFPDF200016201008120 to 110002500000.3490166670.05168620
HDB-HHX 700-2100-IPDFPDF210017017056.730 to 17003525000.15100157500.02224324
HDB-HHX 1100-2200-IPDFPDF2200178211089.120 to 111002550000.4185194120.06168620
HDB-HHX 800-2400-IPDFPDF240019448064.830 to 18003600000.1990200000.03224324
HDB-HHX 1200-2400-IPDFPDF2400194412097.220 to 112002600000.4870257140.1168620
HDB-HHX 600-2400-IPDFPDFPDF2400194412097.220 to 16004300000.4660150000.1389.6348.1478.420177120
HDB-HHX 500-2500-IPDFPDFPDF250020251008125 to 15005625000.2760312500.08111.6341.6478.420206025
HDB-HHX 1250-2500-IPDFPDF25002025125101.2520 to 112502625000.5265288460.12168620
HDB-HHX 900-2700-IPDFPDF270021879072.930 to 19003675000.2480253130.04231830
HDB-HHX 700-2800-IPDFPDF280022687056.740 to 17004700000.15100210000.02299032
HDB-HHX 1000-3000-IPDFPDF300024301008130 to 110003750000.3490250000.05243530
HDB-HHX 600-3000-IPDFPDFPDF3000243012097.225 to 16005300000.4660150000.13111.6348.1478.420225225
HDB-HHX 800-3200-IPDFPDF320025928064.840 to 18004800000.1990266670.03299032
HDB-HHX 1100-3300-IPDFPDF3300267311089.130 to 111003825000.4185291180.06243530
HDB-HHX 900-3600-IPDFPDF360029169072.940 to 19004900000.2480337500.04309040
HDB-HHX 1200-3600-IPDFPDF3600291612097.230 to 112003900000.4870385710.1243530
HDB-HHX 1250-3750-IPDFPDF37503038125101.2530 to 112503937500.5265432690.12243530
HDB-HHX 1000-4000-IPDFPDF400032401008140 to 1100041000000.3490333330.05324640
HDB-HHX 1100-4400-IPDFPDF4400356411089.140 to 1110041100000.4185388240.06324640
HDB-HHX 1200-4800-IPDFPDF4800388812097.240 to 1120041200000.4870514290.1324640
HDB-HHX 1250-5000-IPDFPDF50004050125101.2540 to 1125041250000.5265576920.12324640
Note: For Propane gas, turndown is 60% of stated natural gas turndown.

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

Model NumberPDFAlt PDFPDF of Gas TrainPDF of Wiring DiagramMax Input MBHMax Output MBHMin Input MBHMin Output MBHNat. Gas Turndown RatioMax Ind. HX Input# of HX'sMax CFMMax APD @ Min RiseMax Temp RiseMin CFMMin APD @ Max RiseDim ADim BDim CDim DWeight (Lbs.)Total Amps 120VTotal Amps 208V 230V
HDB-HHX 225-450-IPDFPDFPDFPDF450360453610 to 12252166670.066055560.0136.435791762385
HDB-HHX 250-500-IPDFPDFPDFPDF500400504010 to 12502185190.086061730.0136.435791762385
HDB-HHX 270-540-IPDFPDFPDFPDF540432544310 to 12702200000.116066670.0136.435791766985
HDB-HHX 300-600-IPDFPDFPDFPDF600480604810 to 13002222220.136074070.0236.435791766985
HDB-HHX 315-630-IPDFPDFPDFPDF630504635010 to 13152233330.176077780.0236.435791771585
HDB-HHX 225-675-IPDFPDFPDFPDF675540453615 to 12253250000.066083330.0153.8357917756127.5
HDB-HHX 350-700-IPDFPDFPDFPDF700560705610 to 13502259260.26086420.0336.435791771585
HDB-HHX 700-700-IPDFN/aN/aPDFPDF700560705610 to 17001259260.3110051850.0230.674878.81198578
HDB-HHX 360-720-I7205767257.610 to 13602266660.246088880.0375085
HDB-HHX 375-750-IPDFPDFPDFPDF750600756010 to 13752277780.266092590.0436.435791776185
HDB-HHX 400-800-IPDFPDFPDFPDF800640806410 to 14002296300.36098770.0436.435791776185
HDB-HHX 800-800-IPDFN/aN/aPDFPDF800640806410 to 18001296300.399065840.0230.674878.81198578
HDB-HHX 270-810-I8106488164.815 to 12703300000.116010000.50.011003.5127.5
HDB-HHX 900-900-IPDFN/aN/aN/aPDF900720907210 to 19001333330.488083330.0430.674878.811988210
HDB-HHX 300-900-IPDFPDFPDFPDF900720604815 to 13003333330.1360111110.0253.8357917987127.5
HDB-HHX 315-945-IPDFPDFPDFPDF945756635015 to 13153350000.1760116670.0253.83579171056127.5
HDB-HHX 250-1000-IPDFPDFPDFPDF1000800504020 to 12504370370.0860123460.0171.235791712121610
HDB-HHX 1000-1000-IPDFN/aN/aPDFPDF10008001008010 to 110001370370.719082300.0430.748792292110
HDB-HHX 500-1000-IPDFPDFPDFPDF10008001008010 to 15001370370.5660123460.2745.6741.579.051981610
HDB-HHX 350-1050-IPDFPDFPDFPDF1050840705615 to 13503388890.260129630.0353.83579171056127.5
HDB-HHX 360-1080-IPDFPDFPDFPDF108086410886.415 to 13603400000.2460133330.0353.83579171125127.5
HDB-HHX 270-1080-I108086410886.420 to 12704400000.1160133340.0113381610
HDB-HHX 1100-1100-IPDFN/aN/aPDFPDF11008801108810 to 111001407410.848595860.0630.674878.811992110
HDB-HHX 375-1125-IPDFPDFPDFPDF1125900756015 to 13753416670.2660138890.0453.83579171125127.5
HDB-HHX 400-1200-IPDFPDFPDFPDF1200960806415 to 14003444440.360148150.0453.83579171125127.5
HDB-HHX 1200-1200-IPDFN/aN/aPDFPDF12009601209610 to 112001444440.9970126980.130.748792292110
HDB-HHX 600-1200-IPDFPDFPDFPDF12009601209610 to 16002444440.9460148150.1245.674879.051990710
HDB-HHX 1250-1250-IPDFN/aN/aPDFPDF1250100012510010 to 112501462961.0765142450.1230.748792292110
HDB-HHX 270-1350-I1350108013510825 to 12705500000.116016667.50.011672.520
HDB-HHX 350-1400-IPDFPDFPDFPDF14001120705620 to 13504518520.260172840.0371.235791713961610
HDB-HHX 700-1400-IPDFN/aN/aPDFPDF14001120705620 to 17002518520.31100103700.0259.674878.8119157116
HDB-HHX 360-1440-I14401152144115.220 to 13604533320.2460177760.0315001610
HDB-HHX 500-1500-IPDFPDFPDFPDF150012001008015 to 15003555560.5660185190.0767.7541.579221237157.5
HDB-HHX 375-1500-IPDFPDFPDFPDF15001200756020 to 13754555560.2660185190.0471.235791714881610
HDB-HHX 800-1600-IPDFN/aN/aPDFPDF16001280806420 to 18002592590.3990131690.0259.674878.8119157116
HDB-HHX 400-1600-IPDFPDFPDFPDF16001280806420 to 14004592590.360197530.0471.235791714881610
HDB-HHX 350-1750-IPDFPDFPDFPDF17501400705625 to 13505648150.260216050.0388.535791717372012.5
HDB-HHX 600-1800-IPDFPDFPDFPDF180014401209615 to 16003666670.9480222220.1267.754879221015207.5
HDB-HHX 900-1800-IPDFN/aN/aPDFPDF18001440907220 to 19002666670.4960166670.0459.674878.8119161715
HDB-HHX 360-1800-I1800144018014425 to 13605666650.2460222200.03187520
HDB-HHX 375-1875-IPDFPDFPDFPDF18751500756025 to 13755694440.2660231480.0488.535791718522012.5
HDB-HHX 500-2000-IPDFPDFPDFPDF200016001008020 to 15004740740.5660246910.0789.6741.579.0519164520
HDB-HHX 400-2000-IPDFPDFPDFPDF20001600806425 to 14005740740.360246910.0488.535791718522012.5
HDB-HHX 1000-2000-IPDFN/aN/aPDFPDF200016001008020 to 110002740740.7190164610.0459.75487922168620
HDB-HHX 700-2100-IPDFN/aN/aPDFPDF21001680705630 to 17003777780.31100155560.0288.674878.8119224324
HDB-HHX 1100-2200-IPDFN/aN/aPDFPDF220017601108820 to 111002814810.8485191720.0659.674878.8119168620
HDB-HHX 1200-2400-IPDFN/aN/aPDFPDF240019201209620 to 112002888890.9970253970.159.75487922168620
HDB-HHX 800-2400-IPDFN/aN/aPDFPDF24001920806430 to 18003888890.3990197530.0288.674878.8119224324
HDB-HHX 600-2400-IPDFPDFPDFPDF240019201209620 to 16004888890.9460296300.1289.674879.0519177120
HDB-HHX 500-2500-IPDFPDFPDFPDF250020001008025 to 15005925930.5660308640.07111.6741.579.0519206025
HDB-HHX 1250-2500-IPDFN/aN/aPDFPDF2500200012510020 to 112502925931.0765284900.1259.75487922168620
HDB-HHX 900-2700-IPDFN/aN/aN/aPDF27002160907230 to 190031000000.4880250000.0488.674878.8119231830
HDB-HHX 700-2800-IPDFN/aN/aPDFPDF28002240705640 to 170041037040.31100207410.02117.674878.8119299032
HDB-HHX 600-3000-IPDFPDFPDFPDF300024001209625 to 160051111110.9460370370.12111.674879.0519225225
HDB-HHX 1000-3000-IPDFN/aN/aPDFPDF300024001008030 to 1100031111110.7190246910.0488.75487922243530
HDB-HHX 800-3200-IPDFN/aN/aPDFPDF32002560806440 to 180041185190.3990263370.02117.674878.8119299032
HDB-HHX 1100-3300-IPDFN/aN/aPDFPDF330026401108830 to 1110031222220.8485287580.0688.674878.8119243530
HDB-HHX 900-3600-IPDFN/aN/aN/aPDF36002880907240 to 190041333330.4880333330.04117.674878.8119309040
HDB-HHX 1200-3600-IPDFN/aN/aPDFPDF360028801209630 to 1120031333330.9970380950.188.75487922243530
HDB-HHX 1250-3750-IPDFN/aN/aPDFPDF3750300012510030 to 1125031388891.0765427350.1288.75487922243530
HDB-HHX 1000-4000-IPDFN/aN/aPDFPDF400032001008040 to 1100041481480.7190329220.04117.75487922324640
HDB-HHX 1100-4400-IPDFN/aN/aPDFPDF440035201108840 to 1110041629630.8485383440.06117.674878.8119324640
HDB-HHX 1200-4800-IPDFN/aN/aPDFPDF480038401209640 to 1120041777780.9970507940.1117.75487922324640
HDB-HHX 1250-5000-IPDFN/aN/aPDFPDF5000400012510040 to 1125041851851.0765569800.12117.75487922324640
Note: For Propane gas, turndown is 60% of stated natural gas turndown.