HDB Units

Configurations with 20-90°F Temp Rise

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

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Model Number	PDF	Max Input MBH	Max Output MBH	Max Avail. Turndown (Nat)	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
HDB180 - 10:1/6:1 Mod (MB) (NA/LP)	A B C D E F G P Q	180	144	10:1/6:1 (NA/LP)	6667	0.28	90	1481	0.02	20.47	17.37	78	16	165	4	2.5
HDB180 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	180	144	10:1/6:1 Mod (WB) (NA/LP)	6667	0.28	90	1481	0.02	20.47	17.37	78	16	165	4	2.5
HDB180 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	180	144	5:1/3:1 Mod (WA) (NA/LP)	6667	0.28	90	1481	0.02	20.47	17.37	78	16	165	4	2.5
HDB180 - One Stage	A B C D E F G P Q	180	144	1 to 1	6667	0.28	90	1481	0.02	20.47	17.37	78	16	165	4	2.5
HDB180 - Two Stage (TN)	A B C D E F G P Q	180	144	2 to 1	6667	0.28	90	1481	0.02	20.47	17.37	78	16	165	4	2.5
HDB180 - Two Stage (TS)	A B C D E F G P Q	180	144	2 to 1	6667	0.28	90	1481	0.02	20.47	17.37	78	16	165	4	2.5
HDB200 - 10:1/6:1 Mod (MB) (NA/LP)	A B C D E F G P Q	200	160	10:1/6:1 (NA/LP)	7407	0.34	90	1646	0.02	20.47	17.37	78	16	165	4	2.5
HDB200 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	200	160	10:1/6:1 Mod (WB) (NA/LP)	7407	0.34	90	1646	0.02	20.47	17.37	78	16	165	4	2.5
HDB200 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	200	160	5:1/3:1 Mod (WA) (NA/LP)	7407	0.34	90	1646	0.02	20.47	17.37	78	16	165	4	2.5
HDB200 - One Stage	A B C D E F G P Q	200	160	1 to 1	7407	0.34	90	1646	0.02	20.47	17.37	78	16	165	4	2.5
HDB200 - Two Stage (TN)	A B C D E F G P Q	200	160	2 to 1	7407	0.34	90	1646	0.02	20.47	17.37	78	16	165	4	2.5
HDB200 - Two Stage (TS)	A B C D E F G P Q	200	160	2 to 1	7407	0.34	90	1646	0.02	20.47	17.37	78	16	165	4	2.5
HDB250 - 10:1/6:1 Mod (MB) (NA/LP)	A B C D E F G P Q	250	200	10:1/6:1 (NA/LP)	9259	0.39	90	2058	0.02	23.72	17.37	78	16	195	4	2.5
HDB250 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	250	200	5:1/3:1 Mod (WA) (NA/LP)	9259	0.39	90	2058	0.02	23.72	17.37	78	16	195	4	2.5
HDB250 - One Stage	A B C D E F G P Q	250	200	1 to 1	9259	0.39	90	2058	0.02	23.72	17.37	78	16	195	4	2.5
HDB250 - Two Stage (TN)	A B C D E F G P Q	250	200	2 to 1	9259	0.39	90	2058	0.02	23.72	17.37	78	16	195	4	2.5
HDB250 - Two Stage (TS)	A B C D E F G P Q	250	200	2 to 1	9259	0.39	90	2058	0.02	23.72	17.37	78	16	195	4	2.5
HDB270 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	270	216	10:1/6:1 Mod (WB) (NA/LP)	10000	0.36	90	2222	0.02	26.97	17.37	78	16	227	4	2.5
HDB300 - 10:1/6:1 Mod (MB) (NA/LP)	A B C D E F G P Q	300	240	10:1/6:1 (NA/LP)	11111	0.44	90	2469	0.03	26.97	17.37	78	16	227	4	2.5
HDB300 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	300	240	10:1/6:1 Mod (WB) (NA/LP)	11111	0.44	90	2469	0.03	26.97	17.37	78	16	227	4	2.5
HDB300 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	300	240	5:1/3:1 Mod (WA) (NA/LP)	11111	0.44	90	2469	0.03	26.97	17.37	78	16	227	4	2.5
HDB300 - One Stage	A B C D E F G P Q	300	240	1 to 1	11111	0.44	90	2469	0.03	26.97	17.37	78	16	227	4	2.5
HDB300 - Two Stage (TN)	A B C D E F G P Q	300	240	2 to 1	11111	0.44	90	2469	0.03	26.97	17.37	78	16	227	4	2.5
HDB300 - Two Stage (TS)	A B C D E F G P Q	300	240	2 to 1	11111	0.44	90	2469	0.03	26.97	17.37	78	16	227	4	2.5
HDB350 - 10:1/6:1 Mod (MB) (NA/LP)	A B C D E F G P Q	350	280	10:1/6:1 (NA/LP)	12963	0.48	90	2881	0.03	33.47	17.37	78	16	262	4	2.5
HDB350 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	350	280	5:1/3:1 Mod (WA) (NA/LP)	12963	0.48	90	2881	0.03	33.47	17.37	78	16	262	4	2.5
HDB350 - One Stage	A B C D E F G P Q	350	280	1 to 1	12963	0.48	90	2881	0.03	33.47	17.37	78	16	262	4	2.5
HDB350 - Two Stage (TN)	A B C D E F G P Q	350	280	2 to 1	12963	0.48	90	2881	0.03	33.47	17.37	78	16	262	4	2.5
HDB350 - Two Stage (TS)	A B C D E F G P Q	350	280	2 to 1	12963	0.48	90	2881	0.03	33.47	17.37	78	16	262	4	2.5
HDB360 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	360	288	10:1/6:1 Mod (WB) (NA/LP)	13333	0.42	90	2963	0.03	33.47	17.37	78	16	295	4	2.5
HDB375 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	375	300	10:1/6:1 Mod (WB) (NA/LP)	13889	0.46	90	3086	0.03	33.47	17.37	78	16	295	4	2.5
HDB400 - 10:1/6:1 Mod (MB) (NA/LP)	A B C D E F G P Q	400	320	10:1/6:1 (NA/LP)	14815	0.52	90	3292	0.03	33.47	17.37	78	16	295	4	2.5
HDB400 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	400	320	10:1/6:1 Mod (WB) (NA/LP)	14815	0.52	90	3292	0.03	33.47	17.37	78	16	295	4	2.5
HDB400 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	400	320	5:1/3:1 Mod (WA) (NA/LP)	14815	0.52	90	3292	0.03	33.47	17.37	78	16	295	4	2.5
HDB400 - One Stage	A B C D E F G P Q	400	320	1 to 1	14815	0.52	90	3292	0.03	33.47	17.37	78	16	295	4	2.5
HDB400 - Two Stage (TN)	A B C D E F G P Q	400	320	2 to 1	14815	0.52	90	3292	0.03	33.47	17.37	78	16	295	4	2.5
HDB400 - Two Stage (TS)	A B C D E F G P Q	400	320	2 to 1	14815	0.52	90	3292	0.03	33.47	17.37	78	16	295	4	2.5

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

Model Number	PDF	Max Input MBH	Max Output MBH	Max Avail. Turndown (Nat)	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
HDB180-B-MA-CX-X2	PDF	360	288	10 to 1	6667	0.56	180	1481	0.04	20.61	34.98	77	14	330	8	5
HDB180-Q-MA-CX-X2	PDF	360	288	10 to 1	6667	0.56	180	1481	0.04	20.61	34.98	77	14	330	8	5
HDB200-B-MA-CX-X2	PDF	400	320	10 to 1	7407	0.68	180	1646	0.04	20.61	34.98	77	14	330	8	5
HDB200-B-MB-CX-X2	PDF	400	320	20:1/12:1 (NA/LP)	7407	0.68	180	1646	0.04	20.61	34.98	77	14	330	8	5
HDB200-Q-MA-CX-X2	PDF	400	320	10 to 1	7407	0.68	180	1646	0.04	20.61	34.98	77	14	330	8	5
HDB200-Q-MB-CX-X2	PDF	400	320	20:1/12:1 (NA/LP)	7407	0.68	180	1646	0.04	20.61	34.98	77	14	330	8	5
HDB250-B-MA-CX-X2	PDF	500	400	10 to 1	9259	0.79	180	2058	0.05	23.86	34.98	77	14	390	8	5
HDB250-Q-MA-CX-X2	PDF	500	400	10 to 1	9259	0.79	180	2058	0.05	23.86	34.98	77	14	390	8	5
HDB300-B-MA-CX-X2	PDF	600	480	10 to 1	11111	0.88	180	2469	0.06	27.11	34.98	77	14	454	8	5
HDB300-B-MB-CX-X2	PDF	600	480	20:1/12:1 (NA/LP)	11111	0.88	180	2469	0.06	27.11	34.98	77	14	454	8	5
HDB300-Q-MA-CX-X2	PDF	600	480	10 to 1	11111	0.88	180	2469	0.06	27.11	34.98	77	14	454	8	5
HDB300-Q-MB-CX-X2	PDF	600	480	20:1/12:1 (NA/LP)	11111	0.88	180	2469	0.06	27.11	34.98	77	14	454	8	5
HDB350-B-MA-CX-X2	PDF	700	560	10 to 1	12963	0.96	180	2881	0.06	30.36	34.98	77	14	524	8	5
HDB350-Q-MA-CX-X2	PDF	700	560	10 to 1	12963	0.96	180	2881	0.06	30.36	34.98	77	14	524	8	5
HDB400-B-MA-CX-X2	PDF	800	640	10 to 1	14815	1.04	180	3292	0.06	33.61	34.98	77	14	590	8	5
HDB400-B-MB-CX-X2	PDF	800	640	20:1/12:1 (NA/LP)	14815	1.04	180	3292	0.06	33.61	34.98	77	14	590	8	5
HDB400-Q-MA-CX-X2	PDF	800	640	10 to 1	14815	1.04	180	3292	0.06	33.61	34.98	77	14	590	8	5
HDB400-Q-MB-CX-X2	PDF	800	640	20:1/12:1 (NA/LP)	14815	1.04	180	3292	0.06	33.61	34.98	77	14	590	8	5
HDB500-B-MA-CX-X2	PDF	1000	800	10 to 1	18519	1.13	150	4938	0.1	40.11	44.24	77	20	520	10
HDB500-B-MB-CX-X2	PDF	1000	800	20:1/12:1 (NA/LP)	18519	1.13	150	4938	0.1	40.11	44.24	77	20	520	10
HDB500-Q-MA-CX-X2	PDF	1000	800	10 to 1	18519	1.13	150	4938	0.1	40.11	44.24	77	20	520	10
HDB500-Q-MB-CX-X2	PDF	1000	800	20:1/12:1 (NA/LP)	18519	1.13	150	4938	0.1	40.11	44.24	77	20	520	10
HDB600-B-MA-CX-X2	PDF	1200	960	10 to 1	22222	1.22	150	5926	0.11	46.61	44.24	77	20	580	10
HDB600-B-MB-CX-X2	PDF	1200	960	20:1/12:1 (NA/LP)	22222	1.22	150	5926	0.11	46.61	44.24	77	20	580	10
HDB600-Q-MA-CX-X2	PDF	1200	960	10 to 1	22222	1.22	150	5926	0.11	46.61	44.24	77	20	580	10
HDB600-Q-MB-CX-X2	PDF	1200	960	20:1/12:1 (NA/LP)	22222	1.22	150	5926	0.11	46.61	44.24	77	20	580	10

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

Configurations with 20-75°F Temp Rise

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

Note: You must be logged in to view CAD files. Authorized access is required to view STEP files.

Model Number	PDF	Max Input MBH	Max Output MBH	Max Avail. Turndown (Nat)	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
HDB500 - 10:1/6:1 Mod (MB) (NA/LP)	A B C D E F G P Q	500	400	10:1/6:1 (NA/LP)	18519	0.57	75	4938	0.05	39.97	22	78	20	260	5
HDB500 - Two Stage (TS)	A B C D E F G P Q	500	400	2 to 1	18519	0.57	75	4938	0.05	39.97	22	78	20	260	5
HDB500 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	500	400	5:1/3:1 Mod (WA) (NA/LP)	18519	0.57	75	4938	0.05	39.97	22	78	20	260	5
HDB500 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	500	400	10:1/6:1 Mod (WB) (NA/LP)	18519	0.57	75	4938	0.05	39.97	22	78	20	260	5
HDB600 - 10:1/6:1 Mod (MB) (NA/LP)	A B C D E F G P Q	600	480	10:1/6:1 (NA/LP)	22222	0.61	75	5926	0.05	46.46	22	78	20	290	5
HDB600 - Two Stage (TS)	A B C D E F G P Q	600	480	2 to 1	22222	0.61	75	5926	0.05	46.46	22	78	20	290	5
HDB600 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	600	480	5:1/3:1 Mod (WA) (NA/LP)	22222	0.61	75	5926	0.05	46.46	22	78	20	290	5
HDB600 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	600	480	10:1/6:1 Mod (WB) (NA/LP)	22222	0.61	75	5926	0.05	46.46	22	78	20	290	5

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

Configurations with 20-90°F Temp Rise

<img class="size-full wp-image-476 aligncenter lazyload" src="https://www.heatco.com/files/2017/07/HMHD.StyleC.HDB180-400.90Degree-1024x166.png" alt="" width="1429" height="232" />

Configurations with 20-75°F Temp Rise

<img class="size-full wp-image-476 aligncenter lazyload" src="https://www.heatco.com/files/2017/07/HMHD.StyleC.HDB180-400.90Degree-1024x166.png" alt="" width="1429" height="232" />