HDB Units

Select An Efficiency:

81%80%

Configurations with 30-90°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	Total Amps 208V 230V
HDB180 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	180	146	10:1/6:1 Mod (WB) (NA/LP)	4500	0.11	90	1500	0.01	22.37	21.5	77.74	15	165	4	2.5
HDB180 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	180	146	5:1/3:1 Mod (WA) (NA/LP)	4500	0.11	90	1500	0.01	22.37	21.5	77.74	15	165	4	2.5
HDB180 - One Stage (SN)	A B C D E F G P Q	180	146	1 to 1	4500	0.11	90	1500	0.01	22.37	21.5	77.74	15	165	4	2.5
HDB180 - Two Stage (TN)	A B C D E F G P Q	180	146	2 to 1	4500	0.11	90	1500	0.01	22.37	21.5	77.74	15	165	4	2.5
HDB180 - Two Stage (TS)	A B C D E F G P Q	180	146	2 to 1	4500	0.11	90	1500	0.01	22.37	21.5	77.74	15	165	4	2.5
HDB200 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	200	162	10:1/6:1 Mod (WB) (NA/LP)	5000	0.13	90	1667	0.02	22.37	21.5	77.74	15	165	4	2.5
HDB200 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	200	162	5:1/3:1 Mod (WA) (NA/LP)	5000	0.13	90	1667	0.02	22.37	21.5	77.74	15	165	4	2.5
HDB200 - One Stage (SN)	A B C D E F G P Q	200	162	1 to 1	5000	0.13	90	1667	0.02	22.37	21.5	77.74	15	165	4	2.5
HDB200 - Two Stage (TN)	A B C D E F G P Q	200	162	2 to 1	5000	0.13	90	1667	0.02	22.37	21.5	77.74	15	165	4	2.5
HDB200 - Two Stage (TS)	A B C D E F G P Q	200	162	2 to 1	5000	0.13	90	1667	0.02	22.37	21.5	77.74	15	165	4	2.5
HDB225 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	225	182	5:1/3:1 Mod (WA) (NA/LP)	5625	0.16	90	1875	0.02	25.62	21.5	77.74	15	195	4	2.5
HDB225 - One Stage (SN)	A B C D E F G P Q	225	182	1 to 1	5625	0.16	90	1875	0.02	25.62	21.5	77.74	15	195	4	2.5
HDB225 - Two Stage (TN)	A B C D E F G P Q	225	182	2 to 1	5625	0.16	90	1875	0.02	25.62	21.5	77.74	15	195	4	2.5
HDB225 - Two Stage (TS)	A B C D E F G P Q	225	182	2 to 1	5625	0.16	90	1875	0.02	25.62	21.5	77.74	15	195	4	2.5
HDB250 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	250	203	5:1/3:1 Mod (WA) (NA/LP)	6250	0.15	90	2083	0.02	25.62	21.5	77.74	15	195	4	2.5
HDB250 - One Stage (SN)	A B C D E F G P Q	250	203	1 to 1	6250	0.15	90	2083	0.02	25.62	21.5	77.74	15	195	4	2.5
HDB250 - Two Stage (TN)	A B C D E F G P Q	250	203	2 to 1	6250	0.15	90	2083	0.02	25.62	21.5	77.74	15	195	4	2.5
HDB250 - Two Stage (TS)	A B C D E F G P Q	250	203	2 to 1	6250	0.15	90	2083	0.02	25.62	21.5	77.74	15	195	4	2.5
HDB270 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	270	219	10:1/6:1 Mod (WB) (NA/LP)	6750	0.13	90	2250	0.02	28.87	21.5	77.74	15	227	4	2.5
HDB270 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	270	219	5:1/3:1 Mod (WA) (NA/LP)	6750	0.13	90	2250	0.02	28.87	21.5	77.74	15	227	4	2.5
HDB270 - One Stage (SN)	A B C D E F G P Q	270	219	1 to 1	6750	0.13	90	2250	0.02	28.87	21.5	77.74	15	227	4	2.5
HDB270 - Two Stage (TN)	A B C D E F G P Q	270	219	2 to 1	6750	0.13	90	2250	0.02	28.87	21.5	77.74	15	227	4	2.5
HDB270 - Two Stage (TS)	A B C D E F G P Q	270	219	2 to 1	6750	0.13	90	2250	0.02	28.87	21.5	77.74	15	227	4	2.5
HDB300 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	300	243	10:1/6:1 Mod (WB) (NA/LP)	7500	0.16	90	2500	0.02	28.87	21.5	77.74	15	227	4	2.5
HDB300 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	300	243	5:1/3:1 Mod (WA) (NA/LP)	7500	0.16	90	2500	0.02	28.87	21.5	77.74	15	227	4	2.5
HDB300 - One Stage (SN)	A B C D E F G P Q	300	243	1 to 1	7500	0.16	90	2500	0.02	28.87	21.5	77.74	15	227	4	2.5
HDB300 - Two Stage (TN)	A B C D E F G P Q	300	243	2 to 1	7500	0.16	90	2500	0.02	28.87	21.5	77.74	15	227	4	2.5
HDB300 - Two Stage (TS)	A B C D E F G P Q	300	243	2 to 1	7500	0.16	90	2500	0.02	28.87	21.5	77.74	15	227	4	2.5
HDB315 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	315	255	5:1/3:1 Mod (WA) (NA/LP)	7875	0.15	90	2625	0.02	32.12	21.5	77.74	15	262	4	2.5
HDB315 - One Stage (SN)	A B C D E F G P Q	315	255	1 to 1	7875	0.15	90	2625	0.02	32.12	21.5	77.74	15	262	4	2.5
HDB315 - Two Stage (TN)	A B C D E F G P Q	315	255	2 to 1	7875	0.15	90	2625	0.02	32.12	21.5	77.74	15	262	4	2.5
HDB315 - Two Stage (TS)	A B C D E F G P Q	315	255	2 to 1	7875	0.15	90	2625	0.02	32.12	21.5	77.74	15	262	4	2.5
HDB350 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	350	284	5:1/3:1 Mod (WA) (NA/LP)	8750	0.18	90	2917	0.02	32.12	21.5	77.74	15	262	4	2.5
HDB350 - One Stage (SN)	A B C D E F G P Q	350	284	1 to 1	8750	0.18	90	2917	0.02	32.12	21.5	77.74	15	262	4	2.5
HDB350 - Two Stage (TN)	A B C D E F G P Q	350	284	2 to 1	8750	0.18	90	2917	0.02	32.12	21.5	77.74	15	262	4	2.5
HDB350 - Two Stage (TS)	A B C D E F G P Q	350	284	2 to 1	8750	0.18	90	2917	0.02	32.12	21.5	77.74	15	262	4	2.5
HDB360 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	360	292	10:1/6:1 Mod (WB) (NA/LP)	9000	0.16	90	3000	0.02	35.37	21.5	77.74	15	295	4	2.5
HDB360 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	360	292	5:1/3:1 Mod (WA) (NA/LP)	9000	0.16	90	3000	0.02	35.37	21.5	77.74	15	295	4	2.5
HDB360 - One Stage (SN)	A B C D E F G P Q	360	292	1 to 1	9000	0.16	90	3000	0.02	35.37	21.5	77.74	15	295	4	2.5
HDB360 - Two Stage (TN)	A B C D E F G P Q	360	292	2 to 1	9000	0.16	90	3000	0.02	35.37	21.5	77.74	15	295	4	2.5
HDB360 - Two Stage (TS)	A B C D E F G P Q	360	292	2 to 1	9000	0.16	90	3000	0.02	35.37	21.5	77.74	15	295	4	2.5
HDB375 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	375	304	10:1/6:1 Mod (WB) (NA/LP)	9375	0.18	90	3125	0.02	35.37	21.5	77.74	15	295	4	2.5
HDB375 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	375	304	5:1/3:1 Mod (WA) (NA/LP)	9375	0.18	90	3125	0.02	35.37	21.5	77.74	15	295	4	2.5
HDB375 - One Stage (SN)	A B C D E F G P Q	375	304	1 to 1	9375	0.18	90	3125	0.02	35.37	21.5	77.74	15	295	4	2.5
HDB375 - Two Stage (TN)	A B C D E F G P Q	375	304	2 to 1	9375	0.18	90	3125	0.02	35.37	21.5	77.74	15	295	4	2.5
HDB375 - Two Stage (TS)	A B C D E F G P Q	375	304	2 to 1	9375	0.18	90	3125	0.02	35.37	21.5	77.74	15	295	4	2.5
HDB400 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	400	324	10:1/6:1 Mod (WB) (NA/LP)	10000	0.2	90	3333	0.02	35.37	21.5	77.74	15	295	4	2.5
HDB400 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	400	324	5:1/3:1 Mod (WA) (NA/LP)	10000	0.2	90	3333	0.02	35.37	21.5	77.74	15	295	4	2.5
HDB400 - One Stage (SN)	A B C D E F G P Q	400	324	1 to 1	10000	0.2	90	3333	0.02	35.37	21.5	77.74	15	295	4	2.5
HDB400 - Two Stage (TN)	A B C D E F G P Q	400	324	2 to 1	10000	0.2	90	3333	0.02	35.37	21.5	77.74	15	295	4	2.5
HDB400 - Two Stage (TS)	A B C D E F G P Q	400	324	2 to 1	10000	0.2	90	3333	0.02	35.37	21.5	77.74	15	295	4	2.5
HDB500 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	500	405	10:1/6:1 Mod (WB) (NA/LP)	12500	0.21	90	4167	0.02	41.87	24	77.74	15	260	5
HDB500 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	500	405	5:1/3:1 Mod (WA) (NA/LP)	12500	0.21	90	4167	0.02	41.87	24	77.74	15	260	5
HDB500 - Two Stage (TS)	A B C D E F G P Q	500	405	2 to 1	12500	0.21	90	4167	0.02	41.87	24	77.74	15	260	5
HDB600 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	600	486	10:1/6:1 Mod (WB) (NA/LP)	15000	0.23	90	5000	0.03	48.37	24	77.74	15	290	5
HDB600 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	600	486	5:1/3:1 Mod (WA) (NA/LP)	15000	0.23	90	5000	0.03	48.37	24	77.74	15	290	5
HDB600 - Two Stage (TS)	A B C D E F G P Q	600	486	2 to 1	15000	0.23	90	5000	0.03	48.37	24	77.74	15	290	5

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

Configurations with 20-90°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	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 - 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.

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.

Select An Efficiency:

81%80%

HDB-B-CX-X2

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	Total Amps 208V 230V
HDB180-B-WA-CX-X2	PDF	360	292	10 to 1	4500	0.21	180	1500	0.03	22.37	43.14	77.74	16	330	8	5
HDB180-B-WB-CX-X2	PDF	360	292	20:1/12:1 (NA/LP)	4500	0.21	180	1500	0.03	22.37	43.14	77.74	16	330	8	5
HDB200-B-WA-CX-X2	PDF	400	324	10 to 1	5000	0.26	180	1667	0.03	22.37	43.14	77.74	16	330	8	5
HDB200-B-WB-CX-X2	PDF	400	324	20:1/12:1 (NA/LP)	5000	0.26	180	1667	0.03	22.37	43.14	77.74	16	330	8	5
HDB225-B-WA-CX-X2	PDF	450	365	10 to 1	5625	0.33	180	1875	0.04	25.62	43.14	77.74	16	390	8	5
HDB250-B-WA-CX-X2	PDF	500	405	10 to 1	6250	0.3	180	2083	0.03	25.62	43.14	77.74	16	390	8	5
HDB270-B-WA-CX-X2	PDF	540	437	10 to 1	6750	0.26	180	2250	0.03	28.87	43.14	77.74	16	454	8	5
HDB270-B-WB-CX-X2	PDF	540	437	20:1/12:1 (NA/LP)	6750	0.26	180	2250	0.03	28.87	43.14	77.74	16	454	8	5
HDB300-B-WA-CX-X2	PDF	600	486	10 to 1	7500	0.32	180	2500	0.04	28.87	43.14	77.74	16	454	8	5
HDB300-B-WB-CX-X2	PDF	600	486	20:1/12:1 (NA/LP)	7500	0.32	180	2500	0.04	28.87	43.14	77.74	16	454	8	5
HDB315-B-WA-CX-X2	PDF	630	510	10 to 1	7875	0.29	180	2625	0.03	32.12	43.14	77.74	16	524	8	5
HDB350-B-WA-CX-X2	PDF	700	567	10 to 1	8750	0.36	180	2917	0.04	32.12	43.14	77.74	16	524	8	5
HDB360-B-WA-CX-X2	PDF	720	583	10 to 1	9000	0.32	180	3000	0.04	35.37	43.14	77.74	16	590	8	5
HDB360-B-WB-CX-X2	PDF	720	583	20:1/12:1 (NA/LP)	9000	0.32	180	3000	0.04	35.37	43.14	77.74	16	590	8	5
HDB375-B-WA-CX-X2	PDF	750	608	10 to 1	9375	0.35	180	3125	0.04	35.37	43.14	77.74	16	590	8	5
HDB375-B-WB-CX-X2	PDF	750	608	20:1/12:1 (NA/LP)	9375	0.35	180	3125	0.04	35.37	43.14	77.74	16	590	8	5
HDB400-B-WA-CX-X2	PDF	800	648	10 to 1	10000	0.4	180	3333	0.05	35.37	43.14	77.74	16	590	8	5
HDB400-B-WB-CX-X2	PDF	800	648	20:1/12:1 (NA/LP)	10000	0.4	180	3333	0.05	35.37	43.14	77.74	16	590	8	5
HDB500-B-WA-CX-X2	PDF	1000	810	10 to 1	12500	0.42	180	4167	0.05	41.87	48.14	77.74	15	520	10
HDB500-B-WB-CX-X2	PDF	1000	810	20:1/12:1 (NA/LP)	12500	0.42	180	4167	0.05	41.87	48.14	77.74	15	520	10
HDB600-B-WA-CX-X2	PDF	1200	972	10 to 1	15000	0.46	180	5000	0.05	48.37	48.14	77.74	15	580	10
HDB600-B-WB-CX-X2	PDF	1200	972	20:1/12:1 (NA/LP)	15000	0.46	180	5000	0.05	48.37	48.14	77.74	15	580	10

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

HDB-B-CX-X2

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	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-B-WA-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-B-WB-CX-X2	PDF	360	288	20:1/12:1 (NA/LP)	6667	0.56	180	1481	0.04	20.61	34.98	77	16	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-B-WA-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-WB-CX-X2	PDF	400	320	20:1/12:1 (NA/LP)	7407	0.68	180	1646	0.04	20.61	34.98	77	16	330	8	5
HDB225-B-WA-CX-X2	PDF	450	360	10 to 1	8333	0.65	180	1852	0.04	23.62	34.98	77	14	390	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-B-WA-CX-X2	PDF	500	400	10 to 1	9259	0.79	180	2058	0.05	23.86	34.98	77	14	390	8	5
HDB270-B-WA-CX-X2	PDF	540	432	10 to 1	10000	0.73	180	2222	0.05	26.87	34.98	77	14	454	8	5
HDB270-B-WB-CX-X2	PDF	540	432	20:1/12:1 (NA/LP)	10000	0.73	180	2222	0.05	26.87	34.98	77	16	454	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-B-WA-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-WB-CX-X2	PDF	600	480	20:1/12:1 (NA/LP)	11111	0.88	180	2469	0.06	27.11	34.98	77	16	454	8	5
HDB315-B-WA-CX-X2	PDF	630	504	10 to 1	11667	0.8	180	2593	0.05	30.12	34.98	77	14	524	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-B-WA-CX-X2	PDF	700	560	10 to 1	12963	0.96	180	2881	0.06	30.36	34.98	77	14	524	8	5
HDB360-B-WA-CX-X2	PDF	720	576	10 to 1	13333	0.85	180	2963	0.05	33.37	34.98	77	14	590	8	5
HDB360-B-WB-CX-X2	PDF	720	576	20:1/12:1 (NA/LP)	13333	0.85	180	2963	0.05	33.37	34.98	77	16	590	8	5
HDB375-B-WA-CX-X2	PDF	750	600	10 to 1	13889	0.92	180	3086	0.06	33.37	34.98	77	14	590	8	5
HDB375-B-WB-CX-X2	PDF	750	600	20:1/12:1 (NA/LP)	13889	0.92	180	3086	0.06	33.37	34.98	77	16	590	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-B-WA-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-WB-CX-X2	PDF	800	640	20:1/12:1 (NA/LP)	14815	1.04	180	3292	0.06	33.61	34.98	77	16	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-B-WA-CX-X2	PDF	1000	800	10 to 1	18519	1.13	150	4938	0.1	40.11	44.24	77	14	520	10
HDB500-B-WB-CX-X2	PDF	1000	800	20:1/12:1 (NA/LP)	18519	1.13	150	4938	0.1	40.11	44.24	77	16	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-B-WA-CX-X2	PDF	1200	960	10 to 1	22222	1.22	150	5926	0.11	46.61	44.24	77	14	580	10
HDB600-B-WB-CX-X2	PDF	1200	960	20:1/12:1 (NA/LP)	22222	1.22	150	5926	0.11	46.61	44.24	77	16	580	10

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

Select An Efficiency:

80%81% (Coming Soon)

HDB-Q-CX-X2

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	Total Amps 208V 230V
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
HDB180-Q-WA-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-WB-CX-X2	PDF	360	288	20:1/12:1 (NA/LP)	6667	0.55	180	1481	0.03	20.61	34.98	77	16	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
HDB200-Q-WA-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-WB-CX-X2	PDF	400	320	20:1/12:1 (NA/LP)	7407	0.68	180	1646	0.04	20.61	34.98	77	16	330	8	5
HDB225-Q-WA-CX-X2	PDF	450	360	10 to 1	8333	0.65	180	1852	0.04	23.62	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
HDB250-Q-WA-CX-X2	PDF	500	400	10 to 1	9259	0.79	180	2058	0.05	23.86	34.98	77	14	390	8	5
HDB270-Q-WA-CX-X2	PDF	540	432	10 to 1	10000	0.73	180	2222	0.05	26.87	34.98	77	14	454	8	5
HDB270-Q-WB-CX-X2	PDF	540	432	20:1/12:1 (NA/LP)	10000	0.73	180	2222	0.05	26.87	34.98	77	16	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
HDB300-Q-WA-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-WB-CX-X2	PDF	600	480	20:1/12:1 (NA/LP)	11111	0.88	180	2469	0.06	27.11	34.98	77	16	454	8	5
HDB315-Q-WA-CX-X2	PDF	630	504	10 to 1	11667	0.8	180	2593	0.05	30.12	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
HDB350-Q-WA-CX-X2	PDF	700	560	10 to 1	12963	0.96	180	2881	0.06	30.36	34.98	77	14	524	8	5
HDB360-Q-WA-CX-X2	PDF	720	576	10 to 1	13333	0.85	180	2963	0.05	33.37	34.98	77	14	590	8	5
HDB360-Q-WB-CX-X2	PDF	720	576	20:1/12:1 (NA/LP)	13333	0.85	180	2963	0.05	33.37	34.98	77	16	590	8	5
HDB375-Q-WA-CX-X2	PDF	750	600	10 to 1	13889	0.92	180	3086	0.06	33.37	34.98	77	14	590	8	5
HDB375-Q-WB-CX-X2	PDF	750	600	20:1/12:1 (NA/LP)	13889	0.92	180	3086	0.06	33.37	34.98	77	16	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
HDB400-Q-WA-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-WB-CX-X2	PDF	800	640	20:1/12:1 (NA/LP)	14815	1.04	180	3292	0.06	33.61	34.98	77	16	590	8	5
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
HDB500-Q-WA-CX-X2	PDF	1000	800	10 to 1	18519	1.13	150	4938	0.1	40.11	44.24	77	14	520	10
HDB500-Q-WB-CX-X2	PDF	1000	800	20:1/12:1 (NA/LP)	18519	1.13	150	4938	0.1	40.11	44.24	77	16	520	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
HDB600-Q-WA-CX-X2	PDF	1200	960	10 to 1	22222	1.22	150	5926	0.11	46.61	44.24	77	14	580	10
HDB600-Q-WB-CX-X2	PDF	1200	960	20:1/12:1 (NA/LP)	22222	1.22	150	5926	0.11	46.61	44.24	77	16	580	10

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

Jump to:

Select An Efficiency:

Configurations with 30-90°F Temp Rise

<img decoding="async" 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 20-90°F Temp Rise

<img decoding="async" 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 decoding="async" 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" />

Select An Efficiency:

HDB-B-CX-X2

<img decoding="async" 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" />

HDB-B-CX-X2

<img decoding="async" 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" />

Select An Efficiency:

HDB-Q-CX-X2

<img decoding="async" 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" />