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.

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

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-HHX 225-450-TPDFPDFPDFPDF450360453610 to 12252166670.066055560.0136.435791762385
HDB-HHX 250-500-TPDFPDFPDFPDF500400504010 to 12502185190.086061730.0136.435791762385
HDB-HHX 270-540-TPDFPDFPDFPDF540432544310 to 12702200000.116066670.0136.435791766985
HDB-HHX 300-600-TPDFPDFPDFPDF600480604810 to 13002222220.136074070.0236.435791766985
HDB-HHX 315-630-TPDFPDFPDFPDF630504635010 to 13152233330.176077780.0236.435791771585
HDB-HHX 225-675-TPDFPDFPDFPDF675540453615 to 12253250000.066083330.0153.8357917756127.5
HDB-HHX 700-700-TPDFN/aN/aN/aPDF700560705610 to 17001259260.3110051850.0230.674878.81198578
HDB-HHX 350-700-TPDFPDFPDFPDF700560705610 to 13502259260.26086420.0336.435791771585
HDB-HHX 360-720-T7205767257.610 to 13602266660.246088880.0375085
HDB-HHX 375-750-TPDFPDFPDFPDF750600756010 to 13752277780.266092590.0436.435791776185
HDB-HHX 400-800-TPDFPDFPDFPDF800640806410 to 14002296300.36098770.0436.435791776185
HDB-HHX 800-800-TPDFN/aN/aN/aPDF800640806410 to 18001296300.399065840.0230.674878.81198578
HDB-HHX 270-810-T8106488164.815 to 12703300000.116010000.50.011003.5127.5
HDB-HHX 900-900-TPDFN/aN/aN/aPDF900720907210 to 19001333330.488083330.0430.674878.811988210
HDB-HHX 300-900-TPDFPDFPDFPDF900720604815 to 13003333330.1360111110.0253.8357917987127.5
HDB-HHX 315-945-TPDFPDFPDFPDF945756635015 to 13153350000.1760116670.0253.83579171056127.5
HDB-HHX 1000-1000-TPDFN/aN/aPDFPDF10008001008010 to 110001370370.719082300.0430.748792292110
HDB-HHX 250-1000-TPDFPDFPDFPDF1000800504020 to 12504370370.0860123460.0171.235791712121610
HDB-HHX 500-1000-TPDFPDFPDFPDF10008001008010 to 15001370370.5660123460.2745.6741.579.051981610
HDB-HHX 350-1050-TPDFPDFPDFPDF1050840705615 to 13503388890.260129630.0353.83579171056127.5
HDB-HHX 360-1080-TPDFPDFPDFPDF108086410886.415 to 13603400000.2460133330.0353.83579171125127.5
HDB-HHX 270-1080-T108086410886.420 to 12704400000.1160133340.0113381610
HDB-HHX 1100-1100-TPDFN/aN/aPDFPDF11008801108810 to 111001407410.848595860.0630.674878.811992110
HDB-HHX 375-1125-TPDFPDFPDFPDF1125900756015 to 13753416670.2660138890.0453.83579171125127.5
HDB-HHX 400-1200-TPDFPDFPDFPDF1200960806415 to 14003444440.360148150.0453.83579171125127.5
HDB-HHX 1200-1200-TPDFN/aN/aPDFPDF12009601209610 to 112001444440.9970126980.130.748792292110
HDB-HHX 600-1200-TPDFPDFPDFPDF12009601209610 to 16002444440.9460148150.1245.674879.051990710
HDB-HHX 1250-1250-TPDFN/aN/aPDFPDF1250100012510010 to 112501462961.0765142450.1230.748792292110
HDB-HHX 270-1350-T1350108013510825 to 12705500000.116016667.50.011672.520
HDB-HHX 350-1400-TPDFPDFPDFPDF14001120705620 to 13504518520.260172840.0371.235791713961610
HDB-HHX 700-1400-TPDFN/aN/aN/aPDF14001120705620 to 17002518520.31100103700.0259.674878.8119157116
HDB-HHX 360-1440-T14401152144115.220 to 13604533320.2460177760.0315001610
HDB-HHX 500-1500-TPDFPDFPDFPDF150012001008015 to 15003555560.5660185190.0767.7541.579221237157.5
HDB-HHX 375-1500-TPDFPDFPDFPDF15001200756020 to 13754555560.2660185190.0471.235791714881610
HDB-HHX 800-1600-TPDFN/aN/aN/aPDF16001280806420 to 18002592590.3990131690.0259.674878.8119157116
HDB-HHX 400-1600-TPDFPDFPDFPDF16001280806420 to 14004592590.360197530.0471.235791714881610
HDB-HHX 350-1750-TPDFPDFPDFPDF17501400705625 to 13505648150.260216050.0388.535791717372012.5
HDB-HHX 600-1800-TPDFPDFPDFPDF180014401209615 to 16003666670.9460222220.1267.754879221374157.5
HDB-HHX 360-1800-T1800144018014425 to 13605666650.2460222200.03187520
HDB-HHX 900-1800-TPDFN/aN/aN/aPDF18001440907220 to 19002666670.4980166670.0459.674878.8119161720
HDB-HHX 375-1875-TPDFPDFPDFPDF18751500756025 to 13755694440.2660231480.0488.535791718522012.5
HDB-HHX 400-2000-TPDFPDFPDFPDF20001600806425 to 14005740740.360246910.0488.535791718522012.5
HDB-HHX 1000-2000-TPDFN/aN/aPDFPDF200016001008020 to 110002740740.7190164610.0459.75487922168620
HDB-HHX 500-2000-TPDFPDFPDFPDF200016001008020 to 15004740740.5660246910.0789.6741.579.0519164520
HDB-HHX 700-2100-TPDFN/aN/aN/aPDF21001680705630 to 17003777780.31100155560.0288.674878.8119224324
HDB-HHX 1100-2200-TPDFN/aN/aPDFPDF220017601108820 to 111002814810.8485191720.0659.674878.8119168620
HDB-HHX 1200-2400-TPDFN/aN/aPDFPDF240019201209620 to 112002888890.9970253970.159.75487922168620
HDB-HHX 600-2400-TPDFPDFPDFPDF240019201209620 to 16004888890.9460296300.1289.674879.0519177120
HDB-HHX 800-2400-TPDFN/aN/aN/aPDF24001920806430 to 18003888890.3990197530.0288.674878.8119224324
HDB-HHX 1250-2500-TPDFN/aN/aPDFPDF2500200012510020 to 112502925931.0765284900.1259.75487922168620
HDB-HHX 500-2500-TPDFPDFPDFPDF250020001008025 to 15005925930.5660308640.07111.6741.579.0519206025
HDB-HHX 900-2700-TPDFN/aN/aN/aPDF27002160907230 to 190031000000.4880250000.0488.674878.8119231830
HDB-HHX 700-2800-TPDFN/aN/aN/aPDF28002240705640 to 170041037040.31100207410.02117.674878.8119299032
HDB-HHX 1000-3000-TPDFN/aN/aPDFPDF300024001008030 to 1100031111110.7190246910.0488.75487922243530
HDB-HHX 600-3000-TPDFPDFPDFPDF300024001209625 to 160051111110.9460370370.12111.674879.0519225225
HDB-HHX 800-3200-TPDFN/aN/aN/aPDF32002560806440 to 180041185190.3990263370.02117.674878.8119299032
HDB-HHX 1100-3300-TPDFN/aN/aPDFPDF330026401108830 to 1110031222220.8485287580.0688.674878.8119243530
HDB-HHX 1200-3600-TPDFN/aN/aPDFPDF360028801209630 to 1120031333330.9970380950.188.75487922243530
HDB-HHX 900-3600-TPDFN/aN/aN/aPDF36002880907240 to 190041333330.4880333330.04117.674878.8119309040
HDB-HHX 1250-3750-TPDFN/aN/aPDFPDF3750300012510030 to 1125031388891.0765427350.1288.75487922243530
HDB-HHX 1000-4000-TPDFN/aN/aPDFPDF400032001008040 to 1100041481480.7190329220.04117.75487922324640
HDB-HHX 1100-4400-TPDFN/aN/aPDFPDF440035201108840 to 1110041629630.8485383440.06117.674878.8119324640
HDB-HHX 1200-4800-TPDFN/aN/aPDFPDF480038401209640 to 1120041777780.9970507940.1117.75487922324640
HDB-HHX 1250-5000-TPDFN/aN/aPDFPDF5000400012510040 to 1125041851851.0765569800.12117.75487922324640
Note: For Propane gas, turndown is 60% of stated natural gas turndown.