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

Note: You must be logged in to view CAD, Gas Train and Wiring Diagram files.
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
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.