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 | CAD | Alt PDF | Alt CAD | 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 Rise | Max APD @ Min Rise | Max Temp Rise | Min CFM Rise | Min APD @ Max Rise | Dim A | Dim B | Dim C | Dim D | Weight (Lbs.) | Total Amps 120V | Total Amps 208V 230V | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HDB-HHX 225-450-O | 450 | 360 | 45 | 36 | 10 to 1 | 225 | 2 | 16667 | 0.06 | 60 | 5556 | 0.01 | 36.4 | 35 | 79 | 17 | 623 | 8 | 5 | ||||||
| HDB-HHX 250-500-O | 500 | 400 | 50 | 40 | 10 to 1 | 250 | 2 | 18519 | 0.08 | 60 | 6173 | 0.01 | 36.4 | 35 | 79 | 17 | 623 | 8 | 5 | ||||||
| HDB-HHX 270-540-O | 540 | 432 | 54 | 43 | 10 to 1 | 270 | 2 | 20000 | 0.11 | 60 | 6667 | 0.01 | 36.4 | 35 | 79 | 17 | 669 | 8 | 5 | ||||||
| HDB-HHX 300-600-O | 600 | 480 | 60 | 48 | 10 to 1 | 300 | 2 | 22222 | 0.13 | 60 | 7407 | 0.02 | 36.4 | 35 | 79 | 17 | 669 | 8 | 5 | ||||||
| HDB-HHX 315-630-O | 630 | 504 | 63 | 50 | 10 to 1 | 315 | 2 | 23333 | 0.17 | 60 | 7778 | 0.02 | 36.4 | 35 | 79 | 17 | 715 | 8 | 5 | ||||||
| HDB-HHX 225-675-O | 675 | 540 | 45 | 36 | 15 to 1 | 225 | 3 | 25000 | 0.06 | 60 | 8333 | 0.01 | 53.8 | 35 | 79 | 17 | 756 | 12 | 7.5 | ||||||
| HDB-HHX 700-700-O | N/a | N/a | N/a | 700 | 560 | 70 | 56 | 10 to 1 | 700 | 1 | 25926 | 0.31 | 100 | 5185 | 0.02 | 30.67 | 48 | 78.81 | 19 | 483 | 8 | ||||
| HDB-HHX 350-700-O | 700 | 560 | 70 | 56 | 10 to 1 | 350 | 2 | 25926 | 0.2 | 60 | 8642 | 0.03 | 36.4 | 35 | 79 | 17 | 715 | 8 | 5 | ||||||
| HDB-HHX 375-750-O | 750 | 600 | 75 | 60 | 10 to 1 | 375 | 2 | 27778 | 0.26 | 60 | 9259 | 0.04 | 36.4 | 35 | 79 | 17 | 761 | 8 | 5 | ||||||
| HDB-HHX 800-800-O | N/a | N/a | N/a | 800 | 640 | 80 | 64 | 10 to 1 | 800 | 1 | 29630 | 0.39 | 90 | 6584 | 0.02 | 30.67 | 48 | 78.81 | 19 | 483 | 8 | ||||
| HDB-HHX 400-800-O | 800 | 640 | 80 | 64 | 10 to 1 | 400 | 2 | 29630 | 0.3 | 60 | 9877 | 0.04 | 36.4 | 35 | 79 | 17 | 761 | 8 | 5 | ||||||
| HDB-HHX 900-900-O | N/a | N/a | N/a | 900 | 720 | 90 | 72 | 10 to 1 | 900 | 1 | 33333 | 0.48 | 80 | 8333 | 0.04 | 30.67 | 48 | 78.81 | 19 | 508 | 10 | ||||
| HDB-HHX 300-900-O | 900 | 720 | 60 | 48 | 15 to 1 | 300 | 3 | 33333 | 0.13 | 60 | 11111 | 0.02 | 53.8 | 35 | 79 | 17 | 987 | 12 | 7.5 | ||||||
| HDB-HHX 315-945-O | 945 | 756 | 63 | 50 | 15 to 1 | 315 | 3 | 35000 | 0.17 | 60 | 11667 | 0.02 | 53.8 | 35 | 79 | 17 | 1056 | 12 | 7.5 | ||||||
| HDB-HHX 500-1000-O | 1000 | 800 | 100 | 80 | 10 to 1 | 500 | 1 | 37037 | 0.56 | 60 | 12346 | 0.27 | 45.67 | 41.5 | 79.05 | 19 | 816 | 10 | |||||||
| HDB-HHX 250-1000-O | 1000 | 800 | 50 | 40 | 20 to 1 | 250 | 4 | 37037 | 0.08 | 60 | 12346 | 0.01 | 71.2 | 35 | 79 | 17 | 1212 | 16 | 10 | ||||||
| HDB-HHX 1000-1000-O | N/a | N/a | 1000 | 800 | 100 | 80 | 10 to 1 | 1000 | 1 | 37037 | 0.71 | 90 | 8230 | 0.04 | 30.7 | 48 | 79 | 22 | 583 | 10 | |||||
| HDB-HHX 350-1050-O | 1050 | 840 | 70 | 56 | 15 to 1 | 350 | 3 | 38889 | 0.2 | 60 | 12963 | 0.03 | 53.8 | 35 | 79 | 17 | 1056 | 12 | 7.5 | ||||||
| HDB-HHX 360-1080-O | 1080 | 864 | 72 | 58 | 15 to 1 | 360 | 3 | 40000 | 0.24 | 60 | 13333 | 0.03 | 53.8 | 35 | 79 | 17 | 1125 | 12 | 7.5 | ||||||
| HDB-HHX 1100-1100-O | N/a | N/a | 1100 | 880 | 110 | 88 | 10 to 1 | 1100 | 1 | 40741 | 0.84 | 85 | 9586 | 0.06 | 30.67 | 48 | 78.81 | 19 | 583 | 10 | |||||
| HDB-HHX 375-1125-O | 1125 | 900 | 75 | 60 | 15 to 1 | 375 | 3 | 41667 | 0.26 | 60 | 13889 | 0.04 | 53.8 | 35 | 79 | 17 | 1125 | 12 | 7.5 | ||||||
| HDB-HHX 400-1200-O | 1200 | 960 | 80 | 64 | 15 to 1 | 400 | 3 | 44444 | 0.3 | 60 | 14815 | 0.04 | 53.8 | 35 | 79 | 17 | 1125 | 12 | 7.5 | ||||||
| HDB-HHX 600-1200-O | 1200 | 960 | 120 | 96 | 10 to 1 | 600 | 2 | 44444 | 0.94 | 60 | 14815 | 0.12 | 45.67 | 48 | 79.05 | 19 | 907 | 10 | |||||||
| HDB-HHX 1200-1200-O | N/a | N/a | 1200 | 960 | 120 | 96 | 10 to 1 | 1200 | 1 | 44444 | 0.99 | 70 | 12698 | 0.1 | 30.7 | 48 | 79 | 22 | 583 | 10 | |||||
| HDB-HHX 1250-1250-O | N/a | N/a | 1250 | 1000 | 125 | 100 | 10 to 1 | 1250 | 1 | 46296 | 1.07 | 65 | 14245 | 0.12 | 30.7 | 48 | 79 | 22 | 583 | 10 | |||||
| HDB-HHX 350-1400-O | 1400 | 1120 | 70 | 56 | 20 to 1 | 350 | 4 | 51852 | 0.2 | 60 | 17284 | 0.03 | 71.2 | 35 | 79 | 17 | 1396 | 16 | 10 | ||||||
| HDB-HHX 700-1400-O | N/a | N/a | N/a | 1400 | 1120 | 70 | 56 | 20 to 1 | 700 | 2 | 51852 | 0.31 | 100 | 10370 | 0.02 | 59.67 | 48 | 78.81 | 19 | 965 | 16 | ||||
| HDB-HHX 375-1500-O | 1500 | 1200 | 75 | 60 | 20 to 1 | 375 | 4 | 55556 | 0.26 | 60 | 18519 | 0.04 | 71.2 | 35 | 79 | 17 | 1488 | 16 | 10 | ||||||
| HDB-HHX 500-1500-O | 1500 | 1200 | 100 | 80 | 15 to 1 | 500 | 3 | 55556 | 0.56 | 60 | 18519 | 0.07 | 67.75 | 41.5 | 79 | 22 | 1237 | 15 | 7.5 | ||||||
| HDB-HHX 400-1600-O | 1600 | 1280 | 80 | 64 | 20 to 1 | 400 | 4 | 59259 | 0.3 | 60 | 19753 | 0.04 | 71.2 | 35 | 79 | 17 | 1488 | 16 | 10 | ||||||
| HDB-HHX 800-1600-O | N/a | N/a | N/a | 1600 | 1280 | 80 | 64 | 20 to 1 | 800 | 2 | 59259 | 0.39 | 90 | 13169 | 0.02 | 59.67 | 48 | 78.81 | 19 | 965 | 16 | ||||
| HDB-HHX 350-1750-O | 1750 | 1400 | 70 | 56 | 25 to 1 | 350 | 5 | 64815 | 0.2 | 60 | 21605 | 0.03 | 88.5 | 35 | 79 | 17 | 1737 | 20 | 12.5 | ||||||
| HDB-HHX 900-1800-O | N/a | N/a | N/a | 1800 | 1440 | 90 | 72 | 20 to 1 | 900 | 2 | 66667 | 0.49 | 80 | 16667 | 0.04 | 59.67 | 48 | 78.81 | 19 | 1015 | 20 | ||||
| HDB-HHX 600-1800-O | 1800 | 1440 | 120 | 96 | 15 to 1 | 600 | 3 | 66667 | 0.94 | 60 | 22222 | 0.12 | 67.75 | 48 | 79 | 22 | 1374 | 15 | 7.5 | ||||||
| HDB-HHX 375-1875-O | 1875 | 1500 | 75 | 60 | 25 to 1 | 375 | 5 | 69444 | 0.26 | 60 | 23148 | 0.04 | 88.5 | 35 | 79 | 17 | 1852 | 20 | 12.5 | ||||||
| HDB-HHX 500-2000-O | N/a | 2000 | 1600 | 100 | 80 | 20 to 1 | 500 | 4 | 74074 | 0.56 | 60 | 24691 | 0.07 | 89.67 | 41.5 | 79.05 | 19 | 1645 | 20 | ||||||
| HDB-HHX 400-2000-O | 2000 | 1600 | 80 | 64 | 25 to 1 | 400 | 5 | 74074 | 0.3 | 60 | 24691 | 0.04 | 88.5 | 35 | 79 | 17 | 1852 | 20 | 12.5 | ||||||
| HDB-HHX 1000-2000-O | N/a | N/a | 2000 | 1600 | 100 | 80 | 20 to 1 | 1000 | 2 | 74074 | 0.71 | 90 | 16461 | 0.04 | 59.75 | 48 | 79 | 22 | 1165 | 20 | |||||
| HDB-HHX 700-2100-O | N/a | N/a | N/a | 2100 | 1680 | 70 | 56 | 30 to 1 | 700 | 3 | 77778 | 0.31 | 100 | 15556 | 0.02 | 88.67 | 48 | 78.81 | 19 | 1750 | 24 | ||||
| HDB-HHX 1100-2200-O | N/a | N/a | 2200 | 1760 | 110 | 88 | 20 to 1 | 1100 | 2 | 81481 | 0.84 | 85 | 19172 | 0.06 | 59.67 | 48 | 78.81 | 19 | 1165 | 20 | |||||
| HDB-HHX 800-2400-O | N/a | N/a | N/a | 2400 | 1920 | 80 | 64 | 30 to 1 | 800 | 3 | 88889 | 0.39 | 90 | 19753 | 0.02 | 88.67 | 48 | 78.81 | 19 | 1750 | 24 | ||||
| HDB-HHX 600-2400-O | N/a | 2400 | 1920 | 120 | 96 | 20 to 1 | 600 | 4 | 88889 | 0.94 | 60 | 29630 | 0.12 | 89.67 | 48 | 79.05 | 19 | 1827 | 20 | ||||||
| HDB-HHX 1200-2400-O | N/a | N/a | 2400 | 1920 | 120 | 96 | 20 to 1 | 1200 | 2 | 88889 | 0.99 | 70 | 25397 | 0.1 | 59.75 | 48 | 79 | 22 | 1165 | 20 | |||||
| HDB-HHX 1250-2500-O | N/a | N/a | 2500 | 2000 | 125 | 100 | 20 to 1 | 1250 | 2 | 92593 | 1.07 | 65 | 28490 | 0.12 | 59.75 | 48 | 79 | 22 | 1165 | 20 | |||||
| HDB-HHX 500-2500-O | N/a | 2500 | 2000 | 100 | 80 | 25 to 1 | 500 | 5 | 92593 | 0.56 | 60 | 30864 | 0.07 | 111.67 | 41.5 | 79.05 | 19 | 2053 | 25 | ||||||
| HDB-HHX 900-2700-O | N/a | N/a | N/a | 2700 | 2160 | 90 | 72 | 30 to 1 | 900 | 3 | 100000 | 0.48 | 80 | 25000 | 0.04 | 88.67 | 48 | 78.81 | 19 | 1825 | 30 | ||||
| HDB-HHX 700-2800-O | N/a | N/a | N/a | 2800 | 2240 | 70 | 56 | 40 to 1 | 700 | 4 | 103704 | 0.31 | 100 | 20741 | 0.02 | 117.67 | 48 | 78.81 | 19 | 965 | 32 | ||||
| HDB-HHX 1000-3000-O | N/a | N/a | 3000 | 2400 | 100 | 80 | 30 to 1 | 1000 | 3 | 111111 | 0.71 | 90 | 24691 | 0.04 | 88.75 | 48 | 79 | 22 | 2050 | 30 | |||||
| HDB-HHX 600-3000-O | N/a | 3000 | 2400 | 120 | 96 | 25 to 1 | 600 | 5 | 111111 | 0.94 | 60 | 37037 | 0.12 | 111.67 | 48 | 79.05 | 19 | 2281 | 25 | ||||||
| HDB-HHX 800-3200-O | N/a | N/a | N/a | 3200 | 2560 | 80 | 64 | 40 to 1 | 800 | 4 | 118519 | 0.39 | 90 | 26337 | 0.02 | 117.67 | 48 | 78.81 | 19 | 1750 | 32 | ||||
| HDB-HHX 1100-3300-O | N/a | N/a | 3300 | 2640 | 110 | 88 | 30 to 1 | 1100 | 3 | 122222 | 0.84 | 85 | 28758 | 0.06 | 88.67 | 48 | 78.81 | 19 | 2050 | 30 | |||||
| HDB-HHX 900-3600-O | N/a | N/a | N/a | 3600 | 2880 | 90 | 72 | 40 to 1 | 900 | 4 | 133333 | 0.48 | 80 | 33333 | 0.04 | 117.67 | 48 | 78.81 | 19 | 2931 | 40 | ||||
| HDB-HHX 1200-3600-O | N/a | N/a | 3600 | 2880 | 120 | 96 | 30 to 1 | 1200 | 3 | 133333 | 0.99 | 70 | 38095 | 0.1 | 88.75 | 48 | 79 | 22 | 2050 | 30 | |||||
| HDB-HHX 1250-3750-O | N/a | N/a | 3750 | 3000 | 125 | 100 | 30 to 1 | 1250 | 3 | 138889 | 1.07 | 65 | 42735 | 0.12 | 88.75 | 48 | 79 | 22 | 2050 | 30 | |||||
| HDB-HHX 1000-4000-O | N/a | N/a | 4000 | 3200 | 100 | 80 | 40 to 1 | 1000 | 4 | 148148 | 0.71 | 90 | 32922 | 0.04 | 117.75 | 48 | 79 | 22 | 3231 | 40 | |||||
| HDB-HHX 1100-4400-O | N/a | N/a | 4400 | 3520 | 110 | 88 | 40 to 1 | 1100 | 4 | 162963 | 0.84 | 85 | 38344 | 0.06 | 117.67 | 48 | 78.81 | 19 | 3231 | 40 | |||||
| HDB-HHX 1200-4800-O | N/a | N/a | 4800 | 3840 | 120 | 96 | 40 to 1 | 1200 | 4 | 177778 | 0.99 | 70 | 50794 | 0.1 | 117.75 | 48 | 79 | 22 | 3231 | 40 | |||||
| HDB-HHX 1250-5000-O | N/a | N/a | 5000 | 4000 | 125 | 100 | 40 to 1 | 1250 | 4 | 185185 | 1.07 | 65 | 56980 | 0.12 | 117.75 | 48 | 79 | 22 | 3231 | 40 |