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.

Outdoor Venting Kit

– Vent riser assembly with integral rain cap.
– 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 NumberPDF  Alt PDF  PDF 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 225-450-OPDFPDFPDFPDF450360453610 to 12252166670.066055560.0136.453.89791776385
HDB-HHP 250-500-OPDFPDFPDFPDF500400504010 to 12502185190.086061730.0136.453.89791772085
HDB-HHP 270-540-OPDFPDFPDFPDF540432544310 to 12702200000.116066670.0136.453.89791780985
HDB-HHP 300-600-OPDFPDFPDFPDF600480604810 to 13002222220.136074070.0236.453.89791780985
HDB-HHP 315-630-OPDFPDFPDFPDF630504635010 to 13152233330.176077780.0236.453.89791785585
HDB-HHP 225-675-OPDFPDFPDFPDF675540453615 to 12253250000.066083330.0153.853.897917931127.5
HDB-HHP 700-700-OPDFN/aN/aN/aPDF700560705610 to 17001259260.3110051850.0230.7784.1178.7822.0810728
HDB-HHP 350-700-OPDFPDFPDFPDF700560705610 to 13502259260.26086420.0336.453.89791785585
HDB-HHP 360-720-O7205767257.610 to 13602266660.246088880.0387285
HDB-HHP 375-750-OPDFPDFPDFPDF750600756010 to 13752277780.266092590.0436.453.89791790185
HDB-HHP 400-800-OPDFPDFPDFPDF800640806410 to 14002296300.36098770.0436.453.89791790185
HDB-HHP 800-800-OPDFN/aN/aN/aPDF800640806410 to 18001296300.399065840.0230.7784.1178.7822.0810728
HDB-HHP 270-810-O8106488164.815 to 12703300000.116010000.50.011213.5127.5
HDB-HHP 900-900-OPDFN/aN/aN/aPDF900720907210 to 19001333330.488083330.0430.7784.1178.7822.08111110
HDB-HHP 300-900-OPDFPDFPDFPDF900720604815 to 13003333330.1360111110.0253.853.8979171169127.5
HDB-HHP 315-945-OPDFPDFPDFPDF945756635015 to 13153350000.1760116670.0253.853.8979171238127.5
HDB-HHP 1000-1000-OPDFN/aN/aPDFPDF10008001008010 to 110001370370.719082300.0430.784.117922113610
HDB-HHP 250-1000-OPDFPDFPDFPDF1000800504020 to 12504370370.0860123460.0171.253.89791714351610
HDB-HHP 500-1000-OPDFPDFPDFPDF10008001008010 to 15001370370.5660123460.2745.7760.3778.8920.1597910
HDB-HHP 350-1050-OPDFPDFPDFPDF1050840705615 to 13503388890.260129630.0353.853.8979171238127.5
HDB-HHP 360-1080-OPDFPDFPDFPDF108086410886.415 to 13603400000.2460133330.0353.853.8979171307127.5
HDB-HHP 270-1080-O108086410886.420 to 12704400000.1160133340.0116181610
HDB-HHP 1100-1100-OPDFN/aN/aPDFPDF11008801108810 to 111001407410.848595860.0630.7784.1178.7822.08113610
HDB-HHP 375-1125-OPDFPDFPDFPDF1125900756015 to 13753416670.2660138890.0453.853.8979171619127.5
HDB-HHP 400-1200-OPDFPDFPDFPDF1200960806415 to 14003444440.360148150.0453.83553.8979171307127.5
HDB-HHP 1200-1200-OPDFN/aN/aPDFPDF12009601209610 to 112001444440.9970126980.130.784.117922113610
HDB-HHP 600-1200-OPDFPDFPDFPDF12009601209610 to 16002444440.9460148150.1245.7766.8778.8920.15108810
HDB-HHP 1250-1250-OPDFN/aN/aPDFPDF1250100012510010 to 112501462961.0765142450.1230.784.117922113610
HDB-HHP 270-1350-O1350108013510825 to 12705500000.116016667.50.012022.520
HDB-HHP 350-1400-OPDFPDFPDFPDF14001120705620 to 13504518520.260172840.0371.253.89791717111610
HDB-HHP 700-1400-OPDFN/aN/aN/aPDF14001120705620 to 17002518520.31100103700.0259.7784.1178.7822.08172516
HDB-HHP 360-1440-O14401152144115.220 to 13604533320.2460177760.0317441610
HDB-HHP 500-1500-OPDFPDFPDFPDF150012001008015 to 15003555560.5660185190.0767.7560.3779221437157.5
HDB-HHP 375-1500-OPDFPDFPDFPDF15001200756020 to 13754555560.2660185190.0471.253.89791717111610
HDB-HHP 800-1600-OPDFN/aN/aN/aPDF16001280806420 to 18002592590.3990131690.0259.7784.1178.7822.08172516
HDB-HHP 400-1600-OPDFPDFPDFPDF16001280806420 to 14004592590.360197530.0471.253.89791717111610
HDB-HHP 350-1750-OPDFPDFPDFPDF17501400705625 to 13505648150.260216050.0388.553.89791719992012.5
HDB-HHP 600-1800-OPDFPDFPDFPDF180014401209615 to 16003666670.9460222220.1267.7566.8779221597157.5
HDB-HHP 360-1800-O1800144018014425 to 13605666650.2460222200.03218020
HDB-HHP 900-1800-OPDFN/aN/aN/aPDF18001440907220 to 19002666670.4980166670.0459.7784.1178.7822.08178920
HDB-HHP 375-1875-OPDFPDFPDFPDF18751500756025 to 13755694440.2660231480.0488.553.89791721142012.5
HDB-HHP 400-2000-OPDFPDFPDFPDF20001600806425 to 14005740740.360246910.0488.553.89791721142012.5
HDB-HHP 1000-2000-OPDFN/aN/aPDFPDF200016001008020 to 110002740740.7190164610.0459.7584.117922194520
HDB-HHP 500-2000-OPDFPDFPDFPDF200016001008020 to 15004740740.5660246910.0789.7760.3778.8920.15197420
HDB-HHP 700-2100-OPDFN/aN/aN/aPDF21001680705630 to 17003777780.31100155560.0288.7784.1178.7822.08208324
HDB-HHP 1100-2200-OPDFN/aN/aPDFPDF220017601108820 to 111002814810.8485191720.0659.7784.1178.7822.08194520
HDB-HHP 1200-2400-OPDFN/aN/aPDFPDF240019201209620 to 112002888890.9970253970.159.7584.117922194520
HDB-HHP 600-2400-OPDFPDFPDFPDF240019201209620 to 16004888890.9460296300.1289.7766.8778.8920.15235020
HDB-HHP 800-2400-OPDFN/aN/aN/aPDF24001920806430 to 18003888890.3990197530.0288.7784.1178.7822.08208324
HDB-HHP 1250-2500-OPDFN/aN/aPDFPDF2500200012510020 to 112502925931.0765284900.1259.7584.117922194520
HDB-HHP 500-2500-OPDFPDFPDFPDF250020001008025 to 15005925930.5660308640.07111.7760.3778.8920.15259025
HDB-HHP 900-2700-OPDFN/aN/aN/aPDF27002160907230 to 190031000000.4880250000.0488.7784.1178.7822.08215830
HDB-HHP 700-2800-OPDFN/aN/aN/aPDF28002240705640 to 170041037040.31100207410.02117.7784.1178.7822.08339232
HDB-HHP 1000-3000-OPDFN/aN/aPDFPDF300024001008030 to 1100031111110.7190246910.0488.7584.117922277030
HDB-HHP 600-3000-OPDFPDFPDFPDF300024001209625 to 160051111110.9460370370.12111.7766.8778.8920.15227525
HDB-HHP 800-3200-OPDFN/aN/aN/aPDF32002560806440 to 180041185190.3990263370.02117.7784.1178.7822.08339232
HDB-HHP 1100-3300-OPDFN/aN/aPDFPDF330026401108830 to 1110031222220.8485287580.0688.7784.1178.7822.08277030
HDB-HHP 1200-3600-OPDFN/aN/aPDFPDF360028801209630 to 1120031333330.9970380950.188.7584.117922277030
HDB-HHP 900-3600-OPDFN/aN/aN/aPDF36002880907240 to 190041333330.4880333330.04117.7784.1178.7822.08337540
HDB-HHP 1250-3750-OPDFN/aN/aPDFPDF3750300012510030 to 1125031388891.0765427350.1288.7584.117922277030
HDB-HHP 1000-4000-OPDFN/aN/aPDFPDF400032001008040 to 1100041481480.7190329220.04117.7584.117922359540
HDB-HHP 1100-4400-OPDFN/aN/aPDFPDF440035201108840 to 1110041629630.8485383440.06117.7784.1178.7822.08359540
HDB-HHP 1200-4800-OPDFN/aN/aPDFPDF480038401209640 to 1120041777780.9970507940.1117.7584.117922359540
HDB-HHP 1250-5000-OPDFN/aN/aPDFPDF5000400012510040 to 1125041851851.0765569800.12117.7584.117922359540
Note: For Propane gas, turndown is 60% of stated natural gas turndown.