– 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 208V 230V
HDB-VHX-225-450PDFPDFPDFPDF450360453610 to 1166670.329037040.0248.861978.811751285
HDB-VHX-250-500PDFPDFPDFPDF500400504010 to 1185190.399041150.0248.861978.811751285
HDB-VHX-270-540PDFPDFPDFPDF540432544310 to 1200000.369044440.0255.361978.811755285
HDB-VHX-300-600PDFPDFPDFPDF600480604810 to 1222220.449049380.0355.361978.811755285
HDB-VHX-315-630PDFPDFPDFPDF630504635010 to 1233330.49051850.0261.871978.811759485
HDB-VHX-225-675PDFPDFPDFPDF675540453615 to 1250000.329055560.0265.121978.8117718127.5
HDB-VHX-350-700PDFPDFPDFPDF700560705610 to 1259260.489057610.0361.871978.811759485
HDB-VHX-375-750PDFPDFPDFPDF750600756010 to 1277780.469061730.0368.371978.811764285
HDB-VHX-400-800PDFPDFPDFPDF800640806410 to 1296300.529065840.0368.371978.811764285
HDB-VHX-300-900PDFPDFPDFPDF900720604815 to 1333330.449074070.0382.241978.8117773127.5
HDB-VHX-315-945PDFPDFPDFPDF945756635015 to 1350000.49077780.0291.991978.8117836127.5
HDB-VHX-500-1000PDFPDFPDFPDF10008001008010 to 1370370.577598770.0581.3723.6378.812073310
HDB-VHX-250-1000PDFPDFPDFPDF1000800504020 to 1370370.399082300.0288.741978.81179191610
HDB-VHX-350-1050PDFPDFPDFPDF1050840705615 to 1388890.489086420.0391.991978.8117836127.5
HDB-VHX-600-1200PDFPDFPDFPDF120010001209610 to 1444440.6175118520.0594.3723.6378.812077310
HDB-VHX-400-1200PDFPDFPDFPDF1200960806415 to 1444440.529098770.03101.741978.8117903127.5
HDB-VHX-500-1500PDFPDFPDFPDF150012001008015 to 1555560.5775148150.05121.2423.6378.81201076157.5
HDB-VHX-600-1800PDFPDFPDFPDF180014401209615 to 1666670.6175177780.05140.7423.6378.81201136157.5
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 CFMMax APD @ Min RiseMax Temp RiseMin CFMMin APD @ Max RiseDim ADim BDim CDim DWeight (Lbs.)Total Amps 120VTotal Amps 208V 230V
HDB-VHX-225-450-X2PDFPDFPDF900720907220 to 1166670.6418037040.0448.8649.978.811713861610
HDB-VHX-250-500-X2PDFPDFPDF10008001008020 to 1185190.7818041150.0448.8649.978.811713921610
HDB-VHX-270-540-X2PDFPDFPDF10808641088620 to 1200000.7218044440.0455.3649.978.811714801610
HDB-VHX-300-600-X2PDFPDFPDF12009601209620 to 1222220.8818049380.0655.3649.978.811714881610
HDB-VHX-315-630-X2PDFPDFPDF1260100812610020 to 1233330.818051850.0461.8749.978.811715801610
HDB-VHX-225-675-X2PDFPDF13501080907230 to 1250000.6418055560.0465.1249.978.811717502415
HDB-VHX-350-700-X2PDFPDFPDF1400112014011220 to 1259260.9618057610.0661.8749.978.811715881610
HDB-VHX-375-750-X2PDFPDFPDF1500120015012020 to 1277780.9218061730.0668.3749.978.811716981610
HDB-VHX-400-800-X2PDFPDFPDF1600128016012820 to 1296301.0418065840.0668.3749.978.811716981610
HDB-VHX-300-900-X2PDFPDF180014401209630 to 1333330.8818074070.0682.2449.978.811718922415
HDB-VHX-315-945-X2PDFPDF1890151212610030 to 1350000.818077780.0491.9949.978.811720422415
HDB-VHX-500-1000-X2PDFPDFPDF2000160020016020 to 1370371.1415098770.181.3759.2578.812022082010
HDB-VHX-250-1000-X2PDF200016001008040 to 1370370.7818082300.0488.7449.978.811721143220
HDB-VHX-350-1050-X2PDFPDF2100168014011230 to 1388890.9618086420.0691.9949.978.811718522415
HDB-VHX-600-1200-X2PDFPDFPDF2400200024019220 to 1444441.22150118520.194.3759.2578.812019322010
HDB-VHX-400-1200-X2PDFPDF2400192016012830 to 1444441.0418098770.06101.7449.978.811720422415
HDB-VHX-500-1500-X2PDFPDF3000240020016030 to 1555561.14150148150.1121.2459.2578.812026483015
HDB-VHX-600-1800-X2PDFPDF3600288024019230 to 1666671.22150177780.1140.7459.2578.812030083015
Note: For Propane gas, turndown is 60% of stated natural gas turndown.