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.

Weatherproof Vestibule Enclosure

– Complete indoor or outdoor rated Vestibule cabinet.
– Large, hinged galvanized steel door for easy access to components and controls.
– Fresh air intakes assure adequate combustion air supply.
– All heaters pre-wired to marked terminal strip for electrical supply.
– Insulated vent connectors to prevent heat build-up in cabinet.

Indoor Venting Kit

– Custom HeatFab, 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.


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 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-HHP-180-360-IPDFPDFPDF3602923629.1610 to 1180290000.046045000.0140.6653.8678.417.1576385
HDB-HHP-200-400-IPDFPDFPDF4003244032.410 to 12002100000.046050000.0140.6653.8678.417.1576385
HDB-HHP 225-450-IPDFPDFPDF4503644536.4510 to 12252112500.076056250.0240.6653.8678.417.1576385
HDB-HHP 250-500-IPDFPDFPDF5004055040.510 to 12502125000.086062500.0240.6653.8678.417.1572085
HDB-HHP 270-540-IPDFPDFPDF5404375443.7410 to 12702135000.126067500.0340.6653.8678.417.1580985
HDB-HHP-180-540-IPDFPDFPDF5404373629.1615 to 11803135000.046067500.0160.1653.8678.417.151145127.5
HDB-HHP-200-600-IPDFPDFPDF6004864032.415 to 12003150000.046075000.0160.1653.8678.417.151145127.5
HDB-HHP 300-600-IPDFPDFPDF6004866048.610 to 13002150000.156075000.0440.6653.8678.417.1580985
HDB-HHP 315-630-IPDFPDFPDF6305106351.0310 to 13152157500.196078750.0540.6653.8678.417.1585585
HDB-HHP 225-675-IPDFPDFPDF6755474536.4515 to 12253168750.076084380.0260.1653.8678.417.151145127.5
HDB-HHP 350-700-IPDFPDFPDF7005677056.710 to 13502175000.246087500.0640.6653.8678.417.1585585
HDB-HHP 700-700-IPDFPDFPDF7005677056.710 to 17001175000.2210052500.0230.6684.1178.422.1210728
HDB-HHP 360-720-IPDFPDFPDF7205837258.3210 to 13602180000.36090000.0740.6653.8678.417.1587285
HDB-HHP-180-720-IPDFPDFPDF7205833629.1620 to 11804180000.046090000.0179.6653.8678.417.1515261610
HDB-HHP 250-750-IPDFPDFPDF7506085040.515 to 12503187500.086093750.0260.1653.8678.417.151145127.5
HDB-HHP 375-750-IPDFPDFPDF7506087560.7510 to 13752187500.336093750.0840.6653.8678.417.1590185
HDB-HHP 400-800-IPDFPDFPDF8006488064.810 to 14002200000.3860100000.0940.6653.8678.417.1590185
HDB-HHP-200-800-IPDFPDFPDF8006484032.420 to 12004200000.0460100000.0179.6653.8678.417.1515261610
HDB-HHP 800-800-IPDFPDFPDF8006488064.810 to 18001200000.299066670.0330.6684.1178.422.1210728
HDB-HHP 270-810-IPDFPDFPDF8106565443.7415 to 12703202500.1260101250.0360.1653.8678.417.151214127.5
HDB-HHP 225-900-IPDFPDFPDF9007294536.4520 to 12254225000.0760112500.0279.6653.8678.417.1515261610
HDB-HHP 300-900-IPDFPDFPDF9007296048.615 to 13003225000.1560112500.0460.1653.8678.417.151169127.5
HDB-HHP 900-900-IPDFPDFPDF9007299072.910 to 19001225000.378084380.0530.6684.1178.422.12111110
HDB-HHP-180-900-IPDFPDFPDF9007293629.1625 to 11805225000.0460112500.0199.1653.8678.417.1519072012.5
HDB-HHP 315-945-IPDFPDFPDF9457656351.0315 to 13153236250.1960118130.0560.1653.8678.417.151238127.5
HDB-HHP 500-1000-IPDFPDFPDF10008101008110 to 15002250000.7370107140.1345.6660.3778.420.1597910
HDB-HHP-200-1000-IPDFPDFPDF10008104032.425 to 12005250000.0460125000.0199.1653.8678.417.1519072012.5
HDB-HHP 1000-1000-IPDFPDFPDF10008101008110 to 110001250000.579083330.0630.6684.1178.422.12107210
HDB-HHP 250-1000-IPDFPDFPDF10008105040.520 to 12504250000.0860125000.0279.6653.8678.417.1514351610
HDB-HHP 350-1050-IPDFPDFPDF10508507056.715 to 13503262500.2460131250.0660.1653.8678.417.151238127.5
HDB-HHP 270-1080-IPDFPDFPDF10808755443.7420 to 12704270000.1260135000.0379.6653.8678.417.1516181610
HDB-HHP 360-1080-IPDFPDFPDF10808757258.3215 to 13603270000.360135000.0760.1653.8678.417.151307127.5
HDB-HHP 1100-1100-IPDFPDFPDF110089111089.110 to 111001275000.698597060.0930.6684.1178.422.12113610
HDB-HHP 375-1125-IPDFPDFPDF11259117560.7515 to 13753281250.3360140630.0860.1653.8678.417.151619127.5
HDB-HHP 225-1125-IPDFPDFPDF11259114536.4525 to 12255281250.0760140630.0299.1653.8678.417.15190720
HDB-HHP 1200-1200-IPDFPDFPDF120097212097.210 to 112001300000.8270128570.1530.6684.1178.422.12113610
HDB-HHP 600-1200-IPDFPDFPDF120097212097.210 to 16002300001.3180112500.1945.6666.8778.420.15108810
HDB-HHP 400-1200-IPDFPDFPDF12009728064.815 to 14003300000.3860150000.0960.1653.8678.417.151307127.5
HDB-HHP 300-1200-IPDFPDFPDF12009726048.620 to 13004300000.1560150000.0479.6653.8678.417.1516161610
HDB-HHP 250-1250-IPDFPDFPDF125010135040.525 to 12505250000.0860125000.0299.1653.8678.417.15190720
HDB-HHP 1250-1250-IPDFPDFPDF12501013125101.2510 to 112501312500.8965144230.1930.6684.1178.422.12113610
HDB-HHP 315-1260-IPDFPDFPDF126010216351.0320 to 13154315000.1960157500.0579.6653.8678.417.1517101610
HDB-HHP 270-1350-IPDFPDFPDF135010945443.7425 to 12705337500.1260168750.0399.1653.8678.417.15202320
HDB-HHP 700-1400-IPDFPDFPDF140011347056.720 to 17002350000.22100105000.0259.6684.1178.422.12172516
HDB-HHP 350-1400-IPDFPDFPDF140011347056.720 to 13504350000.2460175000.0679.6653.8678.417.1517111610
HDB-HHP 360-1440-IPDFPDFPDF144011667258.3220 to 13604360000.360180000.0779.6653.8678.417.1517441610
HDB-HHP 500-1500-IPDFPDFPDF150012151008115 to 15003375000.7370160710.1367.6660.3778.420.151437157.5
HDB-HHP 375-1500-IPDFPDFPDF150012157560.7520 to 13754375000.3360187500.0879.6653.8678.417.1517111610
HDB-HHP 300-1500-IPDFPDFPDF150012156048.625 to 13005375000.1560187500.0499.1653.8678.417.15202020
HDB-HHP 315-1575-IPDFPDFPDF157512766351.0325 to 13155393750.1960196880.0599.1653.8678.417.15213720
HDB-HHP 800-1600-IPDFPDFPDF160012968064.820 to 18002400000.2990133330.0359.6684.1178.422.12172516
HDB-HHP 400-1600-IPDFPDFPDF160012968064.820 to 14004400000.3860200000.0979.6653.8678.417.1517111610
HDB-HHP 350-1750-IPDFPDFPDF175014187056.725 to 13505437500.2460218750.0699.1653.8678.417.1519992012.5
HDB-HHP 900-1800-IPDFPDFPDF180014589072.920 to 19002450000.3780168750.0559.6684.1178.422.12172520
HDB-HHP 600-1800-IPDFPDFPDF1800145812097.215 to 16003450001.3180168750.1967.6666.8778.420.151597207.5
HDB-HHP 360-1800-IPDFPDFPDF180014587258.3225 to 13605450000.360225000.0799.1653.8678.417.15218020
HDB-HHP 375-1875-IPDFPDFPDF187515197560.7525 to 13755468750.3360234380.0899.1653.8678.417.1521142012.5
HDB-HHP 500-2000-IPDFPDFPDF200016201008120 to 15004500000.7370214290.1389.6660.3778.420.15197420
HDB-HHP 400-2000-IPDFPDFPDF200016208064.825 to 14005500000.3860250000.0999.1653.8678.417.1521142012.5
HDB-HHP 1000-2000-IPDFPDFPDF200016201008120 to 110002500000.5790166670.0659.6684.1178.422.12194520
HDB-HHP 700-2100-IPDFPDFPDF210017017056.730 to 17003525000.22100157500.0288.6684.1178.422.12252724
HDB-HHP 1100-2200-IPDFPDFPDF2200178211089.120 to 111002550000.6985194120.0959.6684.1178.422.12194520
HDB-HHP 800-2400-IPDFPDFPDF240019448064.830 to 18003600000.2990200000.0388.6684.1178.422.12252724
HDB-HHP 1200-2400-IPDFPDFPDF2400194412097.220 to 112002600000.8270257140.1559.6684.1178.422.12194520
HDB-HHP 600-2400-IPDFPDFPDF2400194412097.220 to 16004600001.3180225000.1989.6666.8778.420.15235020
HDB-HHP 500-2500-IPDFPDFPDF250020251008125 to 15005625000.7370267860.13111.6660.3778.420.15259025
HDB-HHP 1250-2500-IPDFPDFPDF25002025125101.2520 to 112502625000.8965288460.1959.6684.1178.422.12194520
HDB-HHP 900-2700-IPDFPDFPDF270021879072.930 to 19003675000.3780253130.0588.6684.1178.422.12262730
HDB-HHP 700-2800-IPDFPDFPDF280022687056.740 to 17004700000.22100210000.02117.6684.1178.422.12339232
HDB-HHP 1000-3000-IPDFPDFPDF300024301008130 to 110003750000.5790250000.0688.6684.1178.422.12277030
HDB-HHP 600-3000-IPDFPDFPDF3000243012097.225 to 16005750001.3180281250.19111.6666.8778.420.15227525
HDB-HHP 800-3200-IPDFPDFPDF320025928064.840 to 18004800000.2990266670.03117.6684.1178.422.12339232
HDB-HHP 1100-3300-IPDFPDFPDF3300267311089.130 to 111003825000.6985291180.0988.6684.1178.422.12277030
HDB-HHP 900-3600-IPDFPDFPDF360029169072.940 to 19004900000.3780337500.05117.6684.1178.422.12337540
HDB-HHP 1200-3600-IPDFPDFPDF3600291612097.230 to 112003900000.8270385710.1588.6684.1178.422.12277030
HDB-HHP 1250-3750-IPDFPDFPDF37503038125101.2530 to 112503937500.8965432690.1988.6684.1178.422.12277030
HDB-HHP 1000-4000-IPDFPDFPDF400032401008140 to 1100041000000.5790333330.06117.6684.1178.422.12359540
HDB-HHP 1100-4400-IPDFPDFPDF4400356411089.140 to 1110041100000.6985388240.09117.6684.1178.422.12359540
HDB-HHP 1200-4800-IPDFPDFPDF4800388812097.240 to 1120041200000.8270514290.15117.6684.1178.422.12359540
HDB-HHP 1250-5000-IPDFPDFPDF50004050125101.2540 to 1125041250000.8965576920.19117.6684.1178.422.12359540
Note: For Propane gas, turndown is 60% of stated natural gas turndown.
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-HHP-180-360-I-X2PDFPDFPDF7205837258.3220 to 1180490000.086045000.0240.66107.5678.420.1515261610
HDB-HHP-200-400-I-X2PDFPDFPDF8006488064.820 to 12004100000.086050000.0240.66107.5678.420.1515261610
HDB-HHP 225-450-I-X2PDFPDFPDF9007299072.920 to 12254112500.146056250.0440.66107.5678.420.1515261610
HDB-HHP 250-500-I-X2PDFPDFPDF10008101008120 to 12504125000.166062500.0440.66107.5678.420.1514401610
HDB-HHP 270-540-I-X2PDFPDFPDF108087510887.4820 to 12704135000.246067500.0640.66107.5678.420.1516181610
HDB-HHP-180-540-I-X2PDFPDFPDF108087510887.4815 to 11806135000.086067500.0260.16107.5678.420.1522902415
HDB-HHP 300-600-I-X2PDFPDFPDF120097212097.220 to 13004150000.36075000.0840.66107.5678.420.1516181610
HDB-HHP-200-600-I-X2PDFPDFPDF120097212097.215 to 12006150000.086075000.0260.16107.5678.420.1522902415
HDB-HHP 315-630-I-X2PDFPDFPDF12601021126102.0620 to 13154157500.386078750.140.66107.5678.420.1517101610
HDB-HHP 225-675-I-X2PDFPDFPDF13501094135109.3515 to 12256168750.146084380.0460.16107.5678.420.1522902415
HDB-HHP 350-700-I-X2PDFPDFPDF14001134140113.420 to 13504175000.486087500.1240.66107.5678.420.1517101610
HDB-HHP 360-720-I-X2PDFPDFPDF14401166144116.6420 to 13604180000.66090000.1440.66107.5678.420.1517441610
HDB-HHP-180-720-I-X2PDFPDFPDF14401166144116.6420 to 11808180000.086090000.0279.66107.5678.420.1530523220
HDB-HHP 250-750-I-X2PDFPDFPDF15001215150121.515 to 12506187500.166093750.0460.16107.5678.420.1522902415
HDB-HHP 375-750-I-X2PDFPDFPDF15001215150121.520 to 13754187500.666093750.1640.66107.5678.420.1518021610
HDB-HHP 400-800-I-X2PDFPDFPDF16001296160129.620 to 14004200000.7660100000.1840.66107.5678.420.1518021610
HDB-HHP-200-800-I-X2PDFPDFPDF16001296160129.620 to 12008200000.0860100000.0279.66107.5678.420.1530523220
HDB-HHP 270-810-I-X2PDFPDFPDF16201312162131.2215 to 12706202500.2460101250.0660.16107.5678.420.1524282415
HDB-HHP 300-900-I-X2PDFPDFPDF18001458180145.815 to 13006225000.360112500.0860.16107.5678.420.1523382415
HDB-HHP 225-900-I-X2PDFPDFPDF18001458180145.820 to 12258225000.1460112500.0479.66107.5678.420.1530523220
HDB-HHP-180-900-I-X2PDFPDFPDF18001458180145.825 to 118010225000.0860112500.0299.16107.5678.420.1538144025
HDB-HHP 315-945-I-X2PDFPDFPDF18901531189153.0915 to 13156236250.3860118130.160.16107.5678.420.1524762415
HDB-HHP 250-1000-I-X2PDFPDFPDF2000162020016220 to 12508250000.1660125000.0479.66107.5678.420.1528703220
HDB-HHP-200-1000-I-X2PDFPDFPDF2000162020016225 to 120010250000.0860125000.0299.16107.5678.420.1538144025
HDB-HHP 500-1000-I-X2PDFPDFPDF2000162020016220 to 15004250001.4670107140.2645.66120.5778.420.15195820
HDB-HHP 350-1050-I-X2PDFPDFPDF21001701210170.115 to 13506262500.4860131250.1260.16107.5678.420.1524762415
HDB-HHP 360-1080-I-X2PDFPDFPDF21601750216174.9615 to 13606270000.660135000.1460.16107.5678.420.1526142415
HDB-HHP 270-1080-I-X2PDFPDFPDF21601750216174.9620 to 12708270000.2460135000.0679.66107.5678.420.1532363220
HDB-HHP 375-1125-I-X2PDFPDFPDF22501823225182.2515 to 13756281250.6660140630.1660.16107.5678.420.1532382415
HDB-HHP 225-1125-I-X2PDFPDFPDF22501823225182.2525 to 122510281250.1460140630.0499.16107.5678.420.15381440
HDB-HHP 400-1200-I-X2PDFPDFPDF24001944240194.415 to 14006300000.7660150000.1860.16107.5678.420.1526142415
HDB-HHP 300-1200-I-X2PDFPDFPDF24001944240194.420 to 13008300000.360150000.0879.66107.5678.420.1532323220
HDB-HHP 600-1200-I-X2PDFPDFPDF24001944240194.420 to 16004300002.6280112500.3845.66133.5778.420.15217620
HDB-HHP 250-1250-I-X2PDFPDFPDF25002025250202.525 to 125010250000.1660125000.0499.16107.5678.420.15381440
HDB-HHP 315-1260-I-X2PDFPDFPDF25202041252204.1220 to 13158315000.3860157500.179.66107.5678.420.1534203220
HDB-HHP 270-1350-I-X2PDFPDFPDF27002187270218.725 to 127010337500.2460168750.0699.16107.5678.420.154046400
HDB-HHP 350-1400-I-X2PDFPDFPDF28002268280226.820 to 13508350000.4860175000.1279.66107.5678.420.1534223220
HDB-HHP 360-1440-I-X2PDFPDFPDF28802333288233.2820 to 13608360000.660180000.1479.66107.5678.420.1534883220
HDB-HHP 500-1500-I-X2PDFPDFPDF3000243030024315 to 15006375001.4670160710.2667.66120.5778.420.1528743015
HDB-HHP 300-1500-I-X2PDFPDFPDF3000243030024325 to 130010375000.360187500.0899.16107.5678.420.15404040
HDB-HHP 375-1500-I-X2PDFPDFPDF3000243030024320 to 13758375000.6660187500.1679.66107.5678.420.1534223220
HDB-HHP 315-1575-I-X2PDFPDFPDF31502552315255.1525 to 131510393750.3860196880.199.16107.5678.420.15427440
HDB-HHP 400-1600-I-X2PDFPDFPDF32002592320259.220 to 14008400000.7660200000.1879.66107.5678.420.1534223220
HDB-HHP 350-1750-I-X2PDFPDFPDF35002835350283.525 to 135010437500.4860218750.1299.16107.5678.420.1539984025
HDB-HHP 360-1800-I-X2PDFPDFPDF36002916360291.625 to 136010450000.660225000.1499.16107.5678.420.15436040
HDB-HHP 600-1800-I-X2PDFPDFPDF36002916360291.615 to 16006450002.6280168750.3867.66133.5778.420.1531944015
HDB-HHP 375-1875-I-X2PDFPDFPDF37503038375303.7525 to 137510468750.6660234380.1699.16107.5678.420.1542284025
HDB-HHP 500-2000-I-X2PDFPDFPDF4000324040032420 to 15008500001.4670214290.2689.66120.5778.420.15394840
HDB-HHP 400-2000-I-X2PDFPDFPDF4000324040032425 to 140010500000.7660250000.1899.16107.5678.420.1542284025
HDB-HHP 600-2400-I-X2PDFPDFPDF48003888480388.820 to 16008600002.6280225000.3889.66133.5778.420.15470040
HDB-HHP 500-2500-I-X2PDFPDFPDF5000405050040525 to 150010625001.4670267860.26111.66120.5778.420.15518050
HDB-HHP 600-3000-I-X2PDFPDFPDF6000486060048625 to 160010750002.6280281250.38111.66133.5778.420.15455050
Note: For Propane gas, turndown is 60% of stated natural gas turndown.