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 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 230V
HDB-VHP-180-360-IPDFPDFPDF360292362910 to 1180290000.119030000.0142.450.278.417.1369385
HDB-VHP-200-400-IPDFPDFPDF400324403210 to 12002100000.139033330.0242.450.278.417.1369385
HDB-VHP-225-450-IPDFPDFPDF450365453610 to 12252112500.169037500.0248.950.278.417.1369385
HDB-VHP-250-500-IPDFPDFPDF500405504110 to 12502125000.159041670.0248.950.278.417.1369685
HDB-VHP-270-540-IPDFPDFPDF540437544410 to 12702135000.139045000.0255.450.278.417.1374085
HDB-VHP-180-540-IPDFPDFPDF540437362915 to 11803135000.119045000.0162.7750.278.417.131040127.5
HDB-VHP-300-600-IPDFPDFPDF600486604910 to 13002150000.169050000.0255.450.278.417.1374485
HDB-VHP-200-600-IPDFPDFPDF600486403215 to 12003150000.139050000.0262.7750.278.417.131040127.5
HDB-VHP-315-630-IPDFPDFPDF630510635110 to 13152157500.159052500.0261.950.278.417.1379085
HDB-VHP-225-675-IPDFPDFPDF675547453615 to 12253168750.169056250.0272.5250.278.417.13875127.5
HDB-VHP-350-700-IPDFPDFPDF700567705710 to 13502175000.189058330.0261.950.278.417.1379485
HDB-VHP-360-720-IPDFPDFPDF720583725810 to 13602180000.169060000.0268.450.278.417.1384985
HDB-VHP-375-750-IPDFPDFPDF750608756110 to 13752187500.189062500.0268.450.278.417.1384985
HDB-VHP-250-750-IPDFPDFPDF750608504115 to 12503187500.159062500.0272.5250.278.417.131044127.5
HDB-VHP-400-800-IPDFPDFPDF800648806510 to 14002200000.29066670.0268.450.278.417.1384985
HDB-VHP-270-810-IPDFPDFPDF820664554515 to 12703205000.139068330.0282.2750.278.417.131110127.5
HDB-VHP-300-900-IPDFPDFPDF900729604915 to 13003225000.169075000.0282.2750.278.417.13946127.5
HDB-VHP-315-945-IPDFPDFPDF945765635115 to 13153236250.159078750.0292.0250.278.417.131021127.5
HDB-VHP-500-1000-IPDFPDFPDF10008101008110 to 15002250000.219083330.0281.452.778.420.13102510
HDB-VHP-350-1050-IPDFPDFPDF1050851705715 to 13503262500.189087500.0292.0250.278.417.131125127.5
HDB-VHP-360-1080-IPDFPDFPDF1080875725815 to 13603270000.169090000.02101.7750.278.417.131274127.5
HDB-VHP-375-1125-IPDFPDFPDF1125911756115 to 13753281250.189093750.02101.7750.278.417.131274127.5
HDB-VHP-600-1200-IPDFPDFPDF12009721209710 to 16002300000.2390100000.0394.452.778.420.13105010
HDB-VHP-400-1200-IPDFPDFPDF1200972806515 to 14003300000.290100000.02101.7750.278.417.131274127.5
HDB-VHP-500-1500-IPDFPDFPDF150012151008115 to 15003375000.2190125000.02121.2752.778.420.131324157.5
HDB-VHP-600-1800-IPDFPDFPDF180014581209715 to 16003450000.2390150000.03140.7752.778.420.131504157.5
Note: For Propane gas, turndown is 60% of stated natural gas turndown.