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
HDA-VHP-250-500-IPDFPDFPDFPDF500400504010 to 12502185190.8310037040.0446.15947.41766585
HDA-VHP-300-600-IPDFPDFPDFPDF600480604810 to 13002222220.9710044440.0551.65947.41772585
HDA-VHP-350-700-IPDFPDFPDFPDF700560705610 to 13502259261.0910051850.0659.15947.41779885
HDA-VHP-400-800-IPDFPDFPDFPDF800640806410 to 14002296301.210059260.0665.75947.41787085
HDA-VHP-300-900-IPDFPDFPDFPDF900720604815 to 13003333330.9710066670.05785947.4171053127.5
HDA-VHP-500-1000-IPDFPDFPDFPDF10008001008010 to 15002370371.3810074070.0778.65947.4201259105
HDA-VHP-350-1050-IPDFPDFPDFPDF1050840705615 to 13503388891.0910077780.0687.85947.4171055127.5
HDA-VHP-600-1200-IPDFPDFPDFPDF12009601209610 to 16002444441.5210088890.0891.65947.4201204105
HDA-VHP-400-1200-IPDFPDFPDFPDF1200960806415 to 14003444441.210088890.0697.55947.4171151127.5
HDA-VHP-500-1500-IPDFPDFPDFPDF150012001008015 to 15003555561.38100111110.071175947.4201538157.5
HDA-VHP-600-1800-IPDFPDFPDFPDF180014401209615 to 16003666671.52100133330.081315947.4201640157.5
HDA-VHP-250-500-I-X2PDFPDFPDF10008001008020 to 12504185191.6620037040.0846.1112.0647.41713301610
HDA-VHP-300-600-I-X2PDFPDFPDF12009601209620 to 13004222221.9420044440.151.6112.0647.41714501610
HDA-VHP-350-700-I-X2PDFPDFPDF1400112014011220 to 13504259262.1820051850.1259.1112.0647.41715961610
HDA-VHP-400-800-I-X2PDFPDFPDF1600128016012820 to 14004296302.420059260.1265.7112.0647.41717401610
HDA-VHP-500-1000-I-X2PDFPDFPDF2000160020016020 to 15004370372.7620074070.1478.6112.0647.420251820
HDA-VHP-600-1200-I-X2PDFPDFPDF2400192024019220 to 16004444443.0420088890.1691.6112.0647.420240820
Note: For Propane gas, turndown is 60% of stated natural gas turndown.