HDB-VHX Units | Heatco

– 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.

Application Guidelines Product Specification User Guidelines OEM Instructions Submittal / Order Information

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Model Number	PDF	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 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	PDF	PDF	PDF	PDF	450	360	45	36	10 to 1	16667	0.32	90	3704	0.02	48.86	19	78.81	17	512	8	5
HDB-VHX-250-500	PDF	PDF	PDF	PDF	500	400	50	40	10 to 1	18519	0.39	90	4115	0.02	48.86	19	78.81	17	512	8	5
HDB-VHX-270-540	PDF	PDF	PDF	PDF	540	432	54	43	10 to 1	20000	0.36	90	4444	0.02	55.36	19	78.81	17	552	8	5
HDB-VHX-300-600	PDF	PDF	PDF	PDF	600	480	60	48	10 to 1	22222	0.44	90	4938	0.03	55.36	19	78.81	17	552	8	5
HDB-VHX-315-630	PDF	PDF	PDF	PDF	630	504	63	50	10 to 1	23333	0.4	90	5185	0.02	61.87	19	78.81	17	594	8	5
HDB-VHX-225-675	PDF	PDF	PDF	PDF	675	540	45	36	15 to 1	25000	0.32	90	5556	0.02	65.12	19	78.81	17	718	12	7.5
HDB-VHX-350-700	PDF	PDF	PDF	PDF	700	560	70	56	10 to 1	25926	0.48	90	5761	0.03	61.87	19	78.81	17	594	8	5
HDB-VHX-375-750	PDF	PDF	PDF	PDF	750	600	75	60	10 to 1	27778	0.46	90	6173	0.03	68.37	19	78.81	17	642	8	5
HDB-VHX-400-800	PDF	PDF	PDF	PDF	800	640	80	64	10 to 1	29630	0.52	90	6584	0.03	68.37	19	78.81	17	642	8	5
HDB-VHX-300-900	PDF	PDF	PDF	PDF	900	720	60	48	15 to 1	33333	0.44	90	7407	0.03	82.24	19	78.81	17	773	12	7.5
HDB-VHX-315-945	PDF	PDF	PDF	PDF	945	756	63	50	15 to 1	35000	0.4	90	7778	0.02	91.99	19	78.81	17	836	12	7.5
HDB-VHX-500-1000	PDF	PDF	PDF	PDF	1000	800	100	80	10 to 1	37037	0.57	75	9877	0.05	81.37	23.63	78.81	20	733	10
HDB-VHX-250-1000	PDF	PDF	PDF	PDF	1000	800	50	40	20 to 1	37037	0.39	90	8230	0.02	88.74	19	78.81	17	919	16	10
HDB-VHX-350-1050	PDF	PDF	PDF	PDF	1050	840	70	56	15 to 1	38889	0.48	90	8642	0.03	91.99	19	78.81	17	836	12	7.5
HDB-VHX-600-1200	PDF	PDF	PDF	PDF	1200	1000	120	96	10 to 1	44444	0.61	75	11852	0.05	94.37	23.63	78.81	20	773	10
HDB-VHX-400-1200	PDF	PDF	PDF	PDF	1200	960	80	64	15 to 1	44444	0.52	90	9877	0.03	101.74	19	78.81	17	903	12	7.5
HDB-VHX-500-1500	PDF	PDF	PDF	PDF	1500	1200	100	80	15 to 1	55556	0.57	75	14815	0.05	121.24	23.63	78.81	20	1076	15	7.5
HDB-VHX-600-1800	PDF	PDF	PDF	PDF	1800	1440	120	96	15 to 1	66667	0.61	75	17778	0.05	140.74	23.63	78.81	20	1136	15	7.5

Note: For Propane gas, turndown is 60% of stated natural gas turndown.

Model Number	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 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-X2	PDF	PDF	PDF	900	720	90	72	20 to 1	16667	0.64	180	3704	0.04	48.86	49.9	78.81	17	1386	16	10
HDB-VHX-250-500-X2	PDF	PDF	PDF	1000	800	100	80	20 to 1	18519	0.78	180	4115	0.04	48.86	49.9	78.81	17	1392	16	10
HDB-VHX-270-540-X2	PDF	PDF	PDF	1080	864	108	86	20 to 1	20000	0.72	180	4444	0.04	55.36	49.9	78.81	17	1480	16	10
HDB-VHX-300-600-X2	PDF	PDF	PDF	1200	960	120	96	20 to 1	22222	0.88	180	4938	0.06	55.36	49.9	78.81	17	1488	16	10
HDB-VHX-315-630-X2	PDF	PDF	PDF	1260	1008	126	100	20 to 1	23333	0.8	180	5185	0.04	61.87	49.9	78.81	17	1580	16	10
HDB-VHX-225-675-X2	PDF		PDF	1350	1080	90	72	30 to 1	25000	0.64	180	5556	0.04	65.12	49.9	78.81	17	1750	24	15
HDB-VHX-350-700-X2	PDF	PDF	PDF	1400	1120	140	112	20 to 1	25926	0.96	180	5761	0.06	61.87	49.9	78.81	17	1588	16	10
HDB-VHX-375-750-X2	PDF	PDF	PDF	1500	1200	150	120	20 to 1	27778	0.92	180	6173	0.06	68.37	49.9	78.81	17	1698	16	10
HDB-VHX-400-800-X2	PDF	PDF	PDF	1600	1280	160	128	20 to 1	29630	1.04	180	6584	0.06	68.37	49.9	78.81	17	1698	16	10
HDB-VHX-300-900-X2	PDF		PDF	1800	1440	120	96	30 to 1	33333	0.88	180	7407	0.06	82.24	49.9	78.81	17	1892	24	15
HDB-VHX-315-945-X2	PDF		PDF	1890	1512	126	100	30 to 1	35000	0.8	180	7778	0.04	91.99	49.9	78.81	17	2042	24	15
HDB-VHX-500-1000-X2	PDF	PDF	PDF	2000	1600	200	160	20 to 1	37037	1.14	150	9877	0.1	81.37	59.25	78.81	20	2208	20	10
HDB-VHX-250-1000-X2	PDF			2000	1600	100	80	40 to 1	37037	0.78	180	8230	0.04	88.74	49.9	78.81	17	2114	32	20
HDB-VHX-350-1050-X2	PDF		PDF	2100	1680	140	112	30 to 1	38889	0.96	180	8642	0.06	91.99	49.9	78.81	17	1852	24	15
HDB-VHX-600-1200-X2	PDF	PDF	PDF	2400	2000	240	192	20 to 1	44444	1.22	150	11852	0.1	94.37	59.25	78.81	20	1932	20	10
HDB-VHX-400-1200-X2	PDF		PDF	2400	1920	160	128	30 to 1	44444	1.04	180	9877	0.06	101.74	49.9	78.81	17	2042	24	15
HDB-VHX-500-1500-X2	PDF		PDF	3000	2400	200	160	30 to 1	55556	1.14	150	14815	0.1	121.24	59.25	78.81	20	2648	30	15
HDB-VHX-600-1800-X2	PDF		PDF	3600	2880	240	192	30 to 1	66667	1.22	150	17778	0.1	140.74	59.25	78.81	20	3008	30	15

Note: For Propane gas, turndown is 60% of stated natural gas turndown.