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 NumberPDFAlt PDFPDF 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
HDA-VHX-250-500-IPDFPDFPDFPDF500400504010 to 12502185190.8310037040.0446.13047.41749085
HDA-VHX-300-600-IPDFPDFPDFPDF600480604810 to 13002222220.9710044440.0551.63047.41753385
HDA-VHX-350-700-IPDFPDFPDFPDF700560705610 to 13502259261.0910051850.0659.13047.41758785
HDA-VHX-400-800-IPDFPDFPDFPDF800640806410 to 14002296301.210059260.0665.73047.41764085
HDA-VHX-300-900-IPDFPDFPDFPDF900720604815 to 13003333330.9710066670.05783047.417785127.5
HDA-VHX-500-1000-IPDFPDFPDFPDF10008001008010 to 15002370371.3810074070.0778.63047.42073310
HDA-VHX-350-1050-IPDFPDFPDFPDF1050840705615 to 13503388891.0910077780.0687.83047.417856127.5
HDA-VHX-600-1200-IPDFPDFPDFPDF12009601209610 to 16002444441.5210088890.0891.63047.42077310
HDA-VHX-400-1200-IPDFPDFPDFPDF1200960806415 to 14003444441.210088890.0697.53047.417936127.5
HDA-VHX-500-1500-IPDFPDFPDFPDF150012001008015 to 15003555561.38100111110.071173047.4201076157.5
HDA-VHX-600-1800-IPDFPDFPDFPDF180014401209615 to 16003666671.52100133330.081313047.4201136157.5
Note: For Propane gas, turndown is 60% of stated natural gas turndown.