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 NumberPDF  Alt PDF  PDF of Gas TrainPDF of Wiring DiagramMax Input MBHMax Output MBHMin Input MBHMin Output MBHMax Avail. Turndown (Nat)Max 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-VHP-225-450-IPDFPDFPDFPDF450360453610 to 12252166670.329037040.0248.8647.9878.811769385
HDB-VHP-250-500-IPDFPDFPDFPDF500400504010 to 12502185190.399041150.0248.8647.9878.811769685
HDB-VHP-270-540-IPDFPDFPDFPDF540432544310 to 12702200000.369044440.0255.3647.9878.811774085
HDB-VHP-300-600-IPDFPDFPDFPDF600480604810 to 13002222220.449049380.0355.3647.9878.811774485
HDB-VHP-315-630-IPDFPDFPDFPDF630504635010 to 13152233330.49051850.0261.8747.9878.811779085
HDB-VHP-225-675-IPDFPDFPDFPDF675540453615 to 12253250000.329055560.0265.1247.9878.8117875127.5
HDB-VHP-350-700-IPDFPDFPDFPDF700560705610 to 13502259260.489057610.0361.8747.9878.811779485
HDB-VHP-375-750-IPDFPDFPDFPDF750600756010 to 13752277780.469061730.0368.3747.9878.811784985
HDB-VHP-400-800-IPDFPDFPDFPDF800640806410 to 14002296300.529065840.0368.3747.9878.811784985
HDB-VHP-300-900-IPDFPDFPDFPDF900720604815 to 13003333330.449074070.0382.2447.9878.8117946127.5
HDB-VHP-315-945-IPDFPDFPDFPDF945756635015 to 13153350000.49077780.0291.9947.9878.81171021127.5
HDB-VHP-500-1000-IPDFPDFPDFPDF10008001008010 to 15002370370.577598770.0581.3752.578.81201104105
HDB-VHP-250-1000-IPDFPDFPDFPDF1000800504020 to 12504370370.399082300.0288.7447.9878.811710571610
HDB-VHP-350-1050-IPDFPDFPDFPDF1050840705615 to 13503388890.489086420.0391.9947.9878.8117926127.5
HDB-VHP-400-1200-IPDFPDFPDFPDF1200960806415 to 14003444440.529098770.03101.7447.9878.81171021127.5
HDB-VHP-600-1200-IPDFPDFPDFPDF120010001209610 to 16002444440.6175118520.0594.3752.578.8120966105
HDB-VHP-500-1500-IPDFPDFPDFPDF150012001008015 to 15003555560.5775148150.05121.2452.578.81201324157.5
HDB-VHP-600-1800-IPDFPDFPDFPDF180014401209615 to 16003666670.6175177780.05140.7452.578.81201504157.5
HDB-VHP-225-450-I-X2PDFPDFPDF900720907220 to 12254166670.6418037040.0448.8690.0578.811713861610
HDB-VHP-250-500-I-X2PDFPDFPDF10008001008020 to 12504185190.7818041150.0448.8690.0578.811713921610
HDB-VHP-270-540-I-X2PDFPDFPDF10808641088620 to 12704200000.7218044440.0455.3690.0578.811714801610
HDB-VHP-300-600-I-X2PDFPDFPDF12009601209620 to 13004222220.8818049380.0655.3690.0578.811714881610
HDB-VHP-315-630-I-X2PDFPDFPDF1260100812610020 to 13154233330.818051850.0461.8790.0578.811715801610
HDB-VHP-225-675-I-X2PDF13501080907230 to 12256250000.6418055560.0465.1290.0578.811717502415
HDB-VHP-350-700-I-X2PDFPDFPDF1400112014011220 to 13504259260.9618057610.0661.8790.0578.811715881610
HDB-VHP-375-750-I-X2PDFPDFPDF1500120015012020 to 13754277780.9218061730.0668.3790.0578.811716981610
HDB-VHP-400-800-I-X2PDFPDFPDF1600128016012820 to 14004296301.0418065840.0668.3790.0578.811716981610
HDB-VHP-300-900-I-X2PDF180014401209630 to 13006333330.8818074070.0682.2490.0578.811718922415
HDB-VHP-315-945-I-X2PDF1890151212610030 to 13156350000.818077780.0491.9990.0578.811720422415
HDB-VHP-500-1000-I-X2PDFPDFPDF2000160020016020 to 15004370371.1415098770.181.3799.3278.812022082010
HDB-VHP-250-1000-I-X2PDF200016001008040 to 12508370370.7818082300.0488.7490.0578.811721143220
HDB-VHP-350-1050-I-X2PDF2100168014011230 to 13506388890.9618086420.0691.9990.0578.811718522415
HDB-VHP-600-1200-I-X2PDFPDFPDF2400200024019220 to 16004444441.22150118520.194.3799.3278.812019322010
HDB-VHP-400-1200-I-X2PDF2400192016012830 to 14006444441.0418098770.06101.7490.0578.811720422415
HDB-VHP-500-1500-I-X2PDF3000240020016030 to 15006555561.14150148150.1121.2499.3278.812026483015
HDB-VHP-600-1800-I-X2PDF3600288024019230 to 16006666671.22150177780.1140.7499.3278.812030083015
Note: For Propane gas, turndown is 60% of stated natural gas turndown.