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.
Outdoor Venting Kit
– Vent riser assembly with integral rain cap.
– 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 Number | Alt PDF | PDF of Gas Train | PDF of Wiring Diagram | Max Input MBH | Max Output MBH | Min Input MBH | Min Output MBH | Nat. Gas Turndown Ratio | Max Ind. HX Input | # of HX's | Max CFM | Max APD @ Min Rise | Max Temp Rise | Min CFM | Min APD @ Max Rise | Dim A | Dim B | Dim C | Dim D | Weight (Lbs.) | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HDB-VHX-225-450-O | 450 | 360 | 45 | 36 | 10 to 1 | 225 | 2 | 16667 | 0.32 | 90 | 3704 | 0.02 | 48.86 | 19 | 78.81 | 17 | 512 | ||||||||
| HDB-VHX-250-500-O | 500 | 400 | 50 | 40 | 10 to 1 | 250 | 2 | 18519 | 0.39 | 90 | 4115 | 0.02 | 48.86 | 19 | 78.81 | 17 | 512 | ||||||||
| HDB-VHX-270-540-O | 540 | 432 | 54 | 43 | 10 to 1 | 270 | 2 | 20000 | 0.36 | 90 | 4444 | 0.02 | 55.36 | 19 | 78.81 | 17 | 552 | ||||||||
| HDB-VHX-300-600-O | 600 | 480 | 60 | 48 | 10 to 1 | 300 | 2 | 22222 | 0.44 | 90 | 4938 | 0.03 | 55.36 | 19 | 78.81 | 17 | 552 | ||||||||
| HDB-VHX-315-630-O | 630 | 504 | 63 | 50 | 10 to 1 | 315 | 2 | 23333 | 0.4 | 90 | 5185 | 0.02 | 61.87 | 19 | 78.81 | 17 | 594 | ||||||||
| HDB-VHX-225-675-O | 675 | 540 | 45 | 36 | 15 to 1 | 225 | 3 | 25000 | 0.32 | 90 | 5556 | 0.02 | 65.12 | 19 | 78.81 | 17 | 718 | ||||||||
| HDB-VHX-350-700-O | 700 | 560 | 70 | 56 | 10 to 1 | 350 | 2 | 25926 | 0.48 | 90 | 5761 | 0.03 | 61.87 | 19 | 78.81 | 17 | 594 | ||||||||
| HDB-VHX-375-750-O | 750 | 600 | 75 | 60 | 10 to 1 | 375 | 2 | 27778 | 0.46 | 90 | 6173 | 0.03 | 68.37 | 19 | 78.81 | 17 | 642 | ||||||||
| HDB-VHX-400-800-O | 800 | 640 | 80 | 64 | 10 to 1 | 400 | 2 | 29630 | 0.52 | 90 | 6584 | 0.03 | 68.37 | 19 | 78.81 | 17 | 642 | ||||||||
| HDB-VHX-300-900-O | 900 | 720 | 60 | 48 | 15 to 1 | 300 | 3 | 33333 | 0.44 | 90 | 7407 | 0.03 | 82.24 | 19 | 78.81 | 17 | 773 | ||||||||
| HDB-VHX-315-945-O | 945 | 756 | 63 | 50 | 15 to 1 | 315 | 3 | 35000 | 0.4 | 90 | 7778 | 0.02 | 91.99 | 19 | 78.81 | 17 | 836 | ||||||||
| HDB-VHX-500-1000-O | 1000 | 800 | 100 | 80 | 10 to 1 | 500 | 2 | 37037 | 0.57 | 75 | 9877 | 0.05 | 81.37 | 23.63 | 78.81 | 20 | 733 | ||||||||
| HDB-VHX-250-1000-O | 1000 | 800 | 50 | 40 | 20 to 1 | 250 | 4 | 37037 | 0.39 | 90 | 8230 | 0.02 | 88.74 | 19 | 78.81 | 17 | 919 | ||||||||
| HDB-VHX-350-1050-O | 1050 | 840 | 70 | 56 | 15 to 1 | 350 | 3 | 38889 | 0.48 | 90 | 8642 | 0.03 | 91.99 | 19 | 78.81 | 17 | 836 | ||||||||
| HDB-VHX-600-1200-O | 1200 | 1000 | 120 | 96 | 10 to 1 | 600 | 2 | 44444 | 0.61 | 75 | 11852 | 0.05 | 94.37 | 23.63 | 78.81 | 20 | 773 | ||||||||
| HDB-VHX-400-1200-O | 1200 | 960 | 80 | 64 | 15 to 1 | 400 | 3 | 44444 | 0.52 | 90 | 9877 | 0.03 | 101.74 | 19 | 78.81 | 17 | 903 | ||||||||
| HDB-VHX-500-1500-O | 1500 | 1200 | 100 | 80 | 15 to 1 | 500 | 3 | 55556 | 0.57 | 75 | 14815 | 0.05 | 121.24 | 23.63 | 78.81 | 20 | 1076 | ||||||||
| HDB-VHX-600-1800-O | 1800 | 1440 | 120 | 96 | 15 to 1 | 600 | 3 | 66667 | 0.61 | 75 | 17778 | 0.05 | 140.74 | 23.63 | 78.81 | 20 | 1136 |
| Model Number | Alt PDF | PDF of Gas Train | PDF of Wiring Diagram | Max Input MBH | Max Output MBH | Min Input MBH | Min Output MBH | Nat. Gas Turndown Ratio | Max Ind. HX Input | # of HX's | Max CFM | Max APD @ Min Rise | Max Temp Rise | Min CFM | Min APD @ Max Rise | Dim A | Dim B | Dim C | Dim D | Weight (Lbs.) | Total Amps 120V | Total Amps 208V 230V | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HDB-VHX-225-450-O-X2 | 900 | 720 | 90 | 72 | 20 to 1 | 225 | 4 | 16667 | 0.64 | 180 | 3704 | 0.04 | 48.86 | 90.71 | 78.81 | 17 | 1386 | 16 | 10 | ||||||||
| HDB-VHX-250-500-O-X2 | 1000 | 800 | 100 | 80 | 20 to 1 | 250 | 4 | 18519 | 0.78 | 180 | 4115 | 0.04 | 48.86 | 90.71 | 78.81 | 17 | 1392 | 16 | 10 | ||||||||
| HDB-VHX-270-540-O-X2 | 1080 | 864 | 108 | 86 | 20 to 1 | 270 | 4 | 20000 | 0.72 | 180 | 4444 | 0.04 | 55.36 | 90.71 | 78.81 | 17 | 1480 | 16 | 10 | ||||||||
| HDB-VHX-300-600-O-X2 | 1200 | 960 | 120 | 96 | 20 to 1 | 300 | 4 | 22222 | 0.88 | 180 | 4938 | 0.06 | 55.36 | 90.71 | 78.81 | 17 | 1488 | 16 | 10 | ||||||||
| HDB-VHX-315-630-O-X2 | 1260 | 1008 | 126 | 100 | 20 to 1 | 315 | 4 | 23333 | 0.8 | 180 | 5185 | 0.04 | 61.87 | 90.71 | 78.81 | 17 | 1580 | 16 | 10 | ||||||||
| HDB-VHX-225-675-O-X2 | 1350 | 1080 | 90 | 72 | 30 to 1 | 225 | 6 | 25000 | 0.64 | 180 | 5556 | 0.04 | 65.12 | 90.71 | 78.81 | 17 | 1750 | 24 | 15 | ||||||||
| HDB-VHX-350-700-O-X2 | 1400 | 1120 | 140 | 112 | 20 to 1 | 350 | 4 | 25926 | 0.96 | 180 | 5761 | 0.06 | 61.87 | 90.71 | 78.81 | 17 | 1588 | 16 | 10 | ||||||||
| HDB-VHX-375-750-O-X2 | 1500 | 1200 | 150 | 120 | 20 to 1 | 375 | 4 | 27778 | 0.92 | 180 | 6173 | 0.06 | 68.37 | 90.71 | 78.81 | 17 | 1698 | 16 | 10 | ||||||||
| HDB-VHX-400-800-O-X2 | 1600 | 1280 | 160 | 128 | 20 to 1 | 400 | 4 | 29630 | 1.04 | 180 | 6584 | 0.06 | 68.37 | 90.71 | 78.81 | 17 | 1698 | 16 | 10 | ||||||||
| HDB-VHX-300-900-O-X2 | 1800 | 1440 | 120 | 96 | 30 to 1 | 300 | 6 | 33333 | 0.88 | 180 | 7407 | 0.06 | 82.24 | 90.71 | 78.81 | 17 | 1892 | 24 | 15 | ||||||||
| HDB-VHX-315-945-O-X2 | 1890 | 1512 | 126 | 100 | 30 to 1 | 315 | 6 | 35000 | 0.8 | 180 | 7778 | 0.04 | 91.99 | 90.71 | 78.81 | 17 | 2042 | 24 | 15 | ||||||||
| HDB-VHX-500-1000-O-X2 | 2000 | 1600 | 200 | 160 | 20 to 1 | 500 | 4 | 37037 | 1.14 | 150 | 9877 | 0.1 | 81.37 | 98.86 | 78.81 | 20 | 2208 | 20 | 10 | ||||||||
| HDB-VHX-250-1000-O-X2 | 2000 | 1600 | 100 | 80 | 40 to 1 | 250 | 8 | 37037 | 0.78 | 180 | 8230 | 0.04 | 88.74 | 90.71 | 78.81 | 17 | 2114 | 32 | 20 | ||||||||
| HDB-VHX-350-1050-O-X2 | 2100 | 1680 | 140 | 112 | 30 to 1 | 350 | 6 | 38889 | 0.96 | 180 | 8642 | 0.06 | 91.99 | 90.71 | 78.81 | 17 | 1852 | 24 | 15 | ||||||||
| HDB-VHX-600-1200-O-X2 | 2400 | 2000 | 240 | 192 | 20 to 1 | 600 | 4 | 44444 | 1.22 | 150 | 11852 | 0.1 | 94.37 | 98.86 | 78.81 | 20 | 1932 | 20 | 10 | ||||||||
| HDB-VHX-400-1200-O-X2 | 2400 | 1920 | 160 | 128 | 30 to 1 | 400 | 6 | 44444 | 1.04 | 180 | 9877 | 0.06 | 101.74 | 90.71 | 78.81 | 17 | 2042 | 24 | 15 | ||||||||
| HDB-VHX-500-1500-O-X2 | 3000 | 2400 | 200 | 160 | 30 to 1 | 500 | 6 | 55556 | 1.14 | 150 | 14815 | 0.1 | 121.24 | 98.86 | 78.81 | 20 | 2648 | 30 | 15 | ||||||||
| HDB-VHX-600-1800-O-X2 | 3600 | 2880 | 240 | 192 | 30 to 1 | 600 | 6 | 66667 | 1.22 | 150 | 17778 | 0.1 | 140.74 | 98.86 | 78.81 | 20 | 3008 | 30 | 15 |