HDA Units

Select An Efficiency:

81%80%

Configurations with 30-100°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
HDA150 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	150	122	10:1/6:1 Mod (WB) (NA/LP)	3750	0.19	100	1125	0.02	20.97	30.35	44.03	16	149	4	2.5
HDA150 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	150	122	5:1/3:1 Mod (WA) (NA/LP)	3750	0.19	100	1125	0.02	20.97	30.35	44.03	16	149	4	2.5
HDA150 - One Stage (SN)	A B C D E F G P Q	150	122	1 to 1	3750	0.19	100	1125	0.02	20.97	30.35	44.03	16	149	4	2.5
HDA150 - Two Stage (TN)	A B C D E F G P Q	150	122	2 to 1	3750	0.19	100	1125	0.02	20.97	30.35	44.03	16	149	4	2.5
HDA200 - 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	0.32	100	1500	0.04	20.97	30.35	44.03	16	149	4	2.5
HDA200 - 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	0.32	100	1500	0.04	20.97	30.35	44.03	16	149	4	2.5
HDA200 - One Stage (SN)	A B C D E F G P Q	200	162	1 to 1	5000	0.32	100	1500	0.04	20.97	30.35	44.03	16	149	4	2.5
HDA200 - Two Stage (TN)	A B C D E F G P Q	200	162	2 to 1	5000	0.32	100	1500	0.04	20.97	30.35	44.03	16	149	4	2.5
HDA250 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	250	202	10:1/6:1 Mod (WB) (NA/LP)	6250	0.4	100	1875	0.04	24.22	30.35	44.03	16	170	4	2.5
HDA250 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	250	202	5:1/3:1 Mod (WA) (NA/LP)	6250	0.4	100	1875	0.04	24.22	30.35	44.03	16	170	4	2.5
HDA250 - One Stage (SN)	A B C D E F G P Q	250	202	1 to 1	6250	0.4	100	1875	0.04	24.22	30.35	44.03	16	170	4	2.5
HDA250 - Two Stage (TN)	A B C D E F G P Q	250	202	2 to 1	6250	0.4	100	1875	0.04	24.22	30.35	44.03	16	170	4	2.5
HDA300 - 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	0.47	100	2250	0.05	27.47	30.35	44.03	16	182	4	2.5
HDA300 - 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	0.47	100	2250	0.05	27.47	30.35	44.03	16	182	4	2.5
HDA300 - One Stage (SN)	A B C D E F G P Q	300	243	1 to 1	7500	0.47	100	2250	0.05	27.47	30.35	44.03	16	182	4	2.5
HDA300 - Two Stage (TN)	A B C D E F G P Q	300	243	2 to 1	7500	0.47	100	2250	0.05	27.47	30.35	44.03	16	182	4	2.5
HDA350 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	350	284	10:1/6:1 Mod (WB) (NA/LP)	8750	0.53	100	2625	0.06	30.72	30.35	44.03	16	213	4	2.5
HDA350 - 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	0.53	100	2625	0.06	30.72	30.35	44.03	16	213	4	2.5
HDA350 - One Stage (SN)	A B C D E F G P Q	350	284	1 to 1	8750	0.53	100	2625	0.06	30.72	30.35	44.03	16	213	4	2.5
HDA350 - Two Stage (TN)	A B C D E F G P Q	350	284	2 to 1	8750	0.53	100	2625	0.06	30.72	30.35	44.03	16	213	4	2.5
HDA400 - 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	0.58	100	3000	0.06	33.97	30.35	44.03	16	238	4	2.5
HDA400 - 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	0.58	100	3000	0.06	33.97	30.35	44.03	16	238	4	2.5
HDA400 - One Stage (SN)	A B C D E F G P Q	400	324	1 to 1	10000	0.58	100	3000	0.06	33.97	30.35	44.03	16	238	4	2.5
HDA400 - Two Stage (TN)	A B C D E F G P Q	400	324	2 to 1	10000	0.58	100	3000	0.06	33.97	30.35	44.03	16	238	4	2.5
HDA500 - 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	0.67	100	3750	0.07	40.47	30.35	44.03	16	235	5	N/a
HDA500 - 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	0.67	100	3750	0.07	40.47	30.35	44.03	16	235	5	N/a
HDA500 - One Stage (SN)	A B C D E F G P Q	500	405	1 to 1	12500	0.67	100	3750	0.07	40.47	30.35	44.03	16	235	5	N/a
HDA500 - Two Stage (TN)	A B C D E F G P Q	500	405	2 to 1	12500	0.67	100	3750	0.07	40.47	30.35	44.03	16	235	5	N/a
HDA600 - 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	0.74	100	4500	0.08	46.97	30.35	44.03	16	255	5	N/a
HDA600 - 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	0.74	100	4500	0.08	46.97	30.35	44.03	16	255	5	N/a
HDA600 - One Stage (SN)	A B C D E F G P Q	600	486	1 to 1	15000	0.74	100	4500	0.08	46.97	30.35	44.03	16	255	5	N/a
HDA600 - Two Stage (TN)	A B C D E F G P Q	600	486	2 to 1	15000	0.74	100	4500	0.08	46.97	30.35	44.03	16	255	5	N/a

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

Configurations with 20-100°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
HDA150 - 10:1/6:1 Mod (MB) (NA/LP)	A B C D E F G P Q	150	120	10:1/6:1 (NA/LP)	5556	0.39	100	1111	0.02	19	28.45	46	14	149	4	2.5
HDA150 - 5:1/3:1 Mod (WA) (NA/LP)	A B C D E F G P Q	150	120	5:1/3:1 Mod (WA) (NA/LP)	5556	0.39	100	1111	0.02	19	28.45	46	14	149	4	2.5
HDA150 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	150	120	10:1/6:1 Mod (WB) (NA/LP)	5556	0.39	100	1111	0.02	19	28.45	46	14	149	4	2.5
HDA150 - One Stage	A B C D E F G P Q	150	120	1 to 1	5556	0.39	100	1111	0.02	19	28.45	46	14	149	4	2.5
HDA150 - Two Stage (TN)	A B C D E F G P Q	150	120	2 to 1	5556	0.39	100	1111	0.02	19	28.45	46	14	149	4	2.5
HDA150 - Two Stage (TS)	A B C D E F G P Q	150	120	2 to 1	5556	0.39	100	1111	0.02	19	28.45	46	14	149	4	2.5
HDA200 - 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	0.67	100	1481	0.03	19	28.45	46	14	149	4	2.5
HDA200 - 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	0.67	100	1481	0.03	19	28.45	46	14	149	4	2.5
HDA200 - 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	0.67	100	1481	0.03	19	28.45	46	14	149	4	2.5
HDA200 - One Stage	A B C D E F G P Q	200	160	1 to 1	7407	0.67	100	1481	0.03	19	28.45	46	14	149	4	2.5
HDA200 - Two Stage (TN)	A B C D E F G P Q	200	160	2 to 1	7407	0.67	100	1481	0.03	19	28.45	46	14	149	4	2.5
HDA200 - Two Stage (TS)	A B C D E F G P Q	200	160	2 to 1	7407	0.67	100	1481	0.03	19	28.45	46	14	149	4	2.5
HDA250 - 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	0.83	100	1852	0.04	25.57	28.45	46	14	170	4	2.5
HDA250 - 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	0.83	100	1852	0.04	25.57	28.45	46	14	170	4	2.5
HDA250 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	250	200	10:1/6:1 Mod (WB) (NA/LP)	9259	0.83	100	1852	0.04	25.57	28.45	46	14	170	4	2.5
HDA250 - One Stage	A B C D E F G P Q	250	200	1 to 1	9259	0.83	100	1852	0.04	25.57	28.45	46	14	170	4	2.5
HDA250 - Two Stage (TN)	A B C D E F G P Q	250	200	2 to 1	9259	0.83	100	1852	0.04	25.57	28.45	46	14	170	4	2.5
HDA250 - Two Stage (TS)	A B C D E F G P Q	250	200	2 to 1	9259	0.83	100	1852	0.04	25.57	28.45	46	14	170	4	2.5
HDA300 - 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	0.96	100	2222	0.05	25.5	28.45	46	14	182	4	2.5
HDA300 - 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	0.96	100	2222	0.05	25.5	28.45	46	14	182	4	2.5
HDA300 - 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	0.96	100	2222	0.05	25.5	28.45	46	14	182	4	2.5
HDA300 - One Stage	A B C D E F G P Q	300	240	1 to 1	11111	0.96	100	2222	0.05	25.5	28.45	46	14	182	4	2.5
HDA300 - Two Stage (TN)	A B C D E F G P Q	300	240	2 to 1	11111	0.96	100	2222	0.05	25.5	28.45	46	14	182	4	2.5
HDA300 - Two Stage (TS)	A B C D E F G P Q	300	240	2 to 1	11111	0.96	100	2222	0.05	25.5	28.45	46	14	182	4	2.5
HDA350 - 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	1.09	100	2593	0.06	32.07	28.45	46	14	213	4	2.5
HDA350 - 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	1.09	100	2593	0.06	32.07	28.45	46	14	213	4	2.5
HDA350 - 10:1/6:1 Mod (WB) (NA/LP)	A B C D E F G P Q	350	280	10:1/6:1 Mod (WB) (NA/LP)	12963	1.09	100	2593	0.06	32.07	28.45	46	14	213	4	2.5
HDA350 - One Stage	A B C D E F G P Q	350	280	1 to 1	12963	1.09	100	2593	0.06	32.07	28.45	46	14	213	4	2.5
HDA350 - Two Stage (TN)	A B C D E F G P Q	350	280	2 to 1	12963	1.09	100	2593	0.06	32.07	28.45	46	14	213	4	2.5
HDA350 - Two Stage (TS)	A B C D E F G P Q	350	280	2 to 1	12963	1.09	100	2593	0.06	32.07	28.45	46	14	213	4	2.5
HDA400 - 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	1.2	100	2963	0.06	32.07	28.45	46	14	238	4	2.5
HDA400 - 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	1.2	100	2963	0.06	32.07	28.45	46	14	238	4	2.5
HDA400 - 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	1.2	100	2963	0.06	32.07	28.45	46	14	238	4	2.5
HDA400 - One Stage	A B C D E F G P Q	400	320	1 to 1	14815	1.2	100	2963	0.06	32.07	28.45	46	14	238	4	2.5
HDA400 - Two Stage (TN)	A B C D E F G P Q	400	320	2 to 1	14815	1.2	100	2963	0.06	32.07	28.45	46	14	238	4	2.5
HDA400 - Two Stage (TS)	A B C D E F G P Q	400	320	2 to 1	14815	1.2	100	2963	0.06	32.07	28.45	46	14	238	4	2.5
HDA500 - 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	1.38	100	3704	0.07	38.57	28.45	44.07	16	235	5	N/a
HDA500 - 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	1.38	100	3704	0.07	38.57	28.45	44.07	16	235	5	N/a
HDA500 - 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	1.38	100	3704	0.07	38.57	28.45	44.07	16	235	5	N/a
HDA500 - Two Stage (TS)	A B C D E F G P Q	500	400	2 to 1	18519	1.38	100	3704	0.07	38.57	28.45	44.07	16	235	5	N/a
HDA600 - 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	1.52	100	4444	0.08	44.97	28.35	44.07	16	255	5	N/a
HDA600 - 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	1.52	100	4444	0.08	44.97	28.35	44.07	16	255	5	N/a
HDA600 - 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	1.52	100	4444	0.08	44.97	28.35	44.07	16	255	5	N/a
HDA600 - Two Stage (TS)	A B C D E F G P Q	600	480	2 to 1	22222	1.52	100	4444	0.08	44.97	28.35	44.07	16	255	5	N/a

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

Select An Efficiency:

81%80%

HDA-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
HDA150-B-WA-CX-X2	PDF	300	240	10 to 1	3750	0.38	200	1125	0.04	20.97	60.84	44.03	14	298	8	5
HDA150-B-WB-CX-X2	PDF	300	240	20 to 1	3750	0.38	200	1125	0.04	30.72	60.84	44.03	14	298	8	5
HDA200-B-WA-CX-X2	PDF	400	320	10 to 1	5000	0.65	200	1500	0.07	20.97	60.84	44.03	14	298	8	5
HDA200-B-WB-CX-X2	PDF	400	320	20 to 1	5000	0.65	200	1500	0.07	30.72	60.84	44.03	14	298	8	5
HDA250-B-WA-CX-X2	PDF	500	400	10 to 1	6250	0.8	200	1875	0.09	20.97	60.84	44.03	14	340	8	5
HDA250-B-WB-CX-X2	PDF	500	400	20 to 1	6250	0.8	200	1875	0.09	33.97	60.84	44.03	14	340	8	5
HDA300-B-WA-CX-X2	PDF	600	480	10 to 1	7500	0.93	200	2250	0.1	20.97	60.84	44.03	14	364	8	5
HDA300-B-WB-CX-X2	PDF	600	480	20 to 1	7500	0.93	200	2250	0.1	33.97	60.84	44.03	14	364	8	5
HDA350-B-WA-CX-X2	PDF	700	560	10 to 1	8750	1.05	200	2625	0.11	24.22	60.84	44.03	14	426	8	5
HDA350-B-WB-CX-X2	PDF	700	560	20 to 1	8750	1.05	200	2625	0.11	40.47	60.84	44.03	14	426	8	5
HDA400-B-WA-CX-X2	PDF	800	640	10 to 1	10000	1.16	200	3000	0.12	24.22	60.84	44.03	14	476	8	5
HDA400-B-WB-CX-X2	PDF	800	640	20 to 1	10000	1.16	200	3000	0.12	40.47	60.84	44.03	14	476	8	5
HDA500-B-WA-CX-X2	PDF	1000	800	10 to 1	12500	1.33	200	3750	0.14	27.47	60.84	44.03	14	470	10	N/a
HDA500-B-WB-CX-X2	PDF	1000	800	20 to 1	12500	1.33	200	3750	0.14	46.97	60.84	44.03	14	470	10	N/a
HDA600-B-WA-CX-X2	PDF	1200	960	10 to 1	15000	1.47	200	4500	0.16	27.47	60.84	44.03	14	510	10	N/a
HDA600-B-WB-CX-X2	PDF	1200	960	20 to 1	15000	1.47	200	4500	0.16	46.97	60.84	44.03	14	510	10	N/a

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

HDA-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
HDA150-B-MA-CX-X2	PDF	300	240	10 to 1	5556	0.78	200	1111	0.04	19.12	56.8	46	16	298	8	5
HDA150-B-MB-CX-X2	PDF	300	240	20:1/12:1 (NA/LP)	5556	0.78	200	1111	0.04	19.12	56.8	46	16	298	8	5
HDA150-B-WA-CX-X2	PDF	300	240	10 to 1	5556	0.78	200	1111	0.04	19.12	56.8	46	16	298	8	5
HDA150-B-WB-CX-X2	PDF	300	240	20:1/12:1 (NA/LP)	5556	0.78	200	1111	0.04	19.12	56.8	46	16	298	8	5
HDA200-B-MA-CX-X2	PDF	400	320	10 to 1	7407	1.34	200	1481	0.06	19.12	56.8	46	16	298	8	5
HDA200-B-MB-CX-X2	PDF	400	320	20:1/12:1 (NA/LP)	7407	1.34	200	1481	0.06	19.12	56.8	46	16	298	8	5
HDA200-B-WB-CX-X2	PDF	400	320	20:1/12:1 (NA/LP)	7407	1.34	200	1481	0.06	19.12	56.8	46	16	298	8	5
HDA200-B-WA-CX-X2	PDF	400	320	10 to 1	7407	1.34	200	1481	0.06	19.12	56.8	46	16	298	8	5
HDA250-B-06-MB-CX-X2	PDF	500	400	20:1/12:1 (NA/LP)	9259	1.38	200	1852	0.06	22.37	56.8	46	16		8	5
HDA250-B-MA-CX-X2	PDF	500	400	10 to 1	9259	1.66	200	1852	0.08	22.37	56.8	46	16	340	8	5
HDA250-B-06-WB-CX-X2	PDF	500	400	20:1/12:1 (NA/LP)	9259	1.38	200	1852	0.06	22.37	56.8	46	16	364	8	5
HDA250-B-WA-CX-X2	PDF	500	400	10 to 1	9259	1.66	200	1852	0.08	22.37	56.8	46	16	340	8	5
HDA300-B-MA-CX-X2	PDF	600	480	10 to 1	11111	1.93	200	2222	0.1	25.62	56.8	46	16	364	8	5
HDA300-B-MB-CX-X2	PDF	600	480	20:1/12:1 (NA/LP)	11111	1.93	200	2222	0.1	25.62	56.8	46	16	364	8	5
HDA300-B-WB-CX-X2	PDF	600	480	20:1/12:1 (NA/LP)	11111	1.93	200	2222	0.1	25.62	56.8	46	16	364	8	5
HDA300-B-WA-CX-X2	PDF	600	480	10 to 1	11111	1.93	200	2222	0.1	25.62	56.8	46	16	364	8	5
HDA350-B-08-MB-CX-X2	PDF	700	560	20:1/12:1 (NA/LP)	12963	1.86	200	2593	0.1	28.87	56.8	46	16		8	5
HDA350-B-MA-CX-X2	PDF	700	560	10 to 1	12963	2.18	200	2593	0.12	28.87	56.8	46	16	426	8	5
HDA350-B-08-WB-CX-X2	PDF	700	560	20:1/12:1 (NA/LP)	12963	1.86	200	2593	0.1	28.87	56.8	46	16	476	8	5
HDA350-B-WA-CX-X2	PDF	700	560	10 to 1	12963	2.18	200	2593	0.12	28.87	56.8	46	16	426	8	5
HDA400-B-MA-CX-X2	PDF	800	640	10 to 1	14815	2.39	200	2963	0.12	32.12	56.8	46	16	476	8	5
HDA400-B-MB-CX-X2	PDF	800	640	20:1/12:1 (NA/LP)	14815	2.39	200	2963	0.12	32.12	56.8	46	16	476	8	5
HDA400-B-WB-CX-X2	PDF	800	640	20:1/12:1 (NA/LP)	14815	2.39	200	2963	0.12	32.12	56.8	46	16	476	8	5
HDA400-B-WA-CX-X2	PDF	800	640	10 to 1	14815	2.39	200	2963	0.12	32.12	56.8	46	16	476	8	5
HDA500-B-MA-CX-X2	PDF	1000	800	10 to 1	18519	2.75	200	3704	0.14	38.62	56.8	46	18	470
HDA500-B-MB-CX-X2	PDF	1000	800	20:1/12:1 (NA/LP)	18519	2.75	200	3704	0.14	38.62	56.8	46	18	470
HDA500-B-WB-CX-X2	PDF	1000	800	20:1/12:1 (NA/LP)	18519	2.75	200	3704	0.14	38.62	56.8	46	16	470	10	N/a
HDA500-B-WA-CX-X2	PDF	1000	800	10 to 1	18519	2.75	200	3704	0.14	38.62	56.8	46	16	470	10	N/a
HDA600-B-MA-CX-X2	PDF	1200	960	10 to 1	22222	3.04	200	4444	0.16	45.12	56.8	46	18	510
HDA600-B-MB-CX-X2	PDF	1200	960	20:1/12:1 (NA/LP)	22222	3.04	200	4444	0.16	45.12	56.8	46	18	510
HDA600-B-WB-CX-X2	PDF	1200	960	20:1/12:1 (NA/LP)	22222	3.04	200	4444	0.16	45.12	56.8	46	16	510	10	N/a
HDA600-B-WA-CX-X2	PDF	1200	960	10 to 1	22222	3.04	200	4444	0.16	45.12	56.8	46	16	510	10	N/a

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

Select An Efficiency:

80%81% (Coming Soon)

HDA-Q-CX-X2

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
HDA150-Q-MA-CX-X2	PDF	300	240	10 to 1	5556	0.78	200	1111	0.04	19.12	56.8	46	16	298	8	5
HDA150-Q-MB-CX-X2	PDF	300	240	20:1/12:1 (NA/LP)	5556	0.78	200	1111	0.04	19.12	56.8	46	16	298	8	5
HDA150-Q-WB-CX-X2	PDF	300	240	20:1/12:1 (NA/LP)	5556	0.78	200	1111	0.04	19.12	56.8	46	16	298	8	5
HDA150-Q-WA-CX-X2	PDF	300	240	10 to 1	5556	0.78	200	1111	0.04	19.12	56.8	46	16	298	8	5
HDA200-Q-MA-CX-X2	PDF	400	320	10 to 1	7407	1.34	200	1481	0.06	19.12	56.8	46	16	298	8	5
HDA200-Q-MB-CX-X2	PDF	400	320	20:1/12:1 (NA/LP)	7407	1.34	200	1481	0.06	19.12	56.8	46	16	298	8	5
HDA200-Q-WB-CX-X2	PDF	400	320	20:1/12:1 (NA/LP)	7407	1.34	200	1481	0.06	19.12	56.8	46	16	298	8	5
HDA200-Q-WA-CX-X2	PDF	400	320	10 to 1	7407	1.34	200	1481	0.06	19.12	56.8	46	16	298	8	5
HDA250-Q-06-MB-CX-X2	PDF	500	400	20:1/12:1 (NA/LP)	9259	1.38	200	1852	0.06	22.37	56.8	46	16		8	5
HDA250-Q-MA-CX-X2	PDF	500	400	10 to 1	9259	1.66	200	1852	0.08	22.37	56.8	46	16	340	8	5
HDA250-Q-06-WB-CX-X2	PDF	500	400	20:1/12:1 (NA/LP)	9259	1.38	200	1852	0.06	22.37	56.8	46	16	364	8	5
HDA250-Q-WA-CX-X2	PDF	500	400	10 to 1	9259	1.66	200	1852	0.08	22.37	56.8	46	16	340	8	5
HDA300-Q-MA-CX-X2	PDF	600	480	10 to 1	11111	1.92	200	2222	0.1	25.62	56.8	46	16	364	8	5
HDA300-Q-MB-CX-X2	PDF	600	480	20:1/12:1 (NA/LP)	11111	1.92	200	2222	0.1	25.62	56.8	46	16	364	8	5
HDA300-Q-WB-CX-X2	PDF	600	480	20:1/12:1 (NA/LP)	11111	1.92	200	2222	0.1	25.62	56.8	46	16	364	8	5
HDA300-Q-WA-CX-X2	PDF	600	480	10 to 1	11111	1.92	200	2222	0.1	25.62	56.8	46	16	364	8	5
HDA350-Q-08-MB-CX-X2	PDF	700	560	20:1/12:1 (NA/LP)	12963	1.86	200	2593	0.1	28.87	56.8	46	16		8	5
HDA350-Q-MA-CX-X2	PDF	700	560	10 to 1	12963	2.18	200	2593	0.12	28.87	56.8	46	16	426	8	5
HDA350-Q-08-WB-CX-X2	PDF	700	560	20:1/12:1 (NA/LP)	12963	1.86	200	2593	0.1	28.87	56.8	46	16	476	8	5
HDA350-Q-WA-CX-X2	PDF	700	560	10 to 1	12963	2.18	200	2593	0.12	28.87	56.8	46	16	426	8	5
HDA400-Q-MA-CX-X2	PDF	800	640	10 to 1	14815	2.4	200	2963	0.12	32.12	56.8	46	16	476	8	5
HDA400-Q-MB-CX-X2	PDF	800	640	20:1/12:1 (NA/LP)	14815	2.4	200	2963	0.12	32.12	56.8	46	16	476	8	5
HDA400-Q-WB-CX-X2	PDF	800	640	20:1/12:1 (NA/LP)	14815	2.4	200	2963	0.12	32.12	56.8	46	16	476	8	5
HDA400-Q-WA-CX-X2	PDF	800	640	10 to 1	14815	2.4	200	2963	0.12	32.12	56.8	46	16	476	8	5
HDA500-Q-MA-CX-X2	PDF	1000	800	10 to 1	18519	2.76	200	3704	0.14	38.62	56.8	46	18	470
HDA500-Q-MB-CX-X2	PDF	1000	800	20:1/12:1 (NA/LP)	18519	2.76	200	3704	0.14	38.62	56.8	46	18	470
HDA500-Q-WB-CX-X2	PDF	1000	800	20:1/12:1 (NA/LP)	18519	2.76	200	3704	0.14	38.62	56.8	46	16	470	10	N/a
HDA500-Q-WA-CX-X2	PDF	1000	800	10 to 1	18519	2.76	200	3704	0.14	38.62	56.8	46	16	470	10	N/a
HDA600-Q-MA-CX-X2	PDF	1200	960	10 to 1	22222	3.04	200	4444	0.16	45.12	56.8	46	18	510
HDA600-Q-MB-CX-X2	PDF	1200	960	20:1/12:1 (NA/LP)	22222	3.04	200	4444	0.16	45.12	56.8	46	18	510
HDA600-Q-WB-CX-X2	PDF	1200	960	20:1/12:1 (NA/LP)	22222	3.04	200	4444	0.16	45.12	56.8	46	16	510	10	N/a
HDA600-Q-WA-CX-X2	PDF	1200	960	10 to 1	22222	3.04	200	4444	0.16	45.12	56.8	46	16	510	10	N/a

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

Select An Efficiency:

80%81% (Coming Soon)

HDA-CX-X3

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	Total Amps 120V	Total Amps 208V 230V
HDA150-B-WA-CX-X3	PDF	450	360	15 to 1	5556	1.17	300	1111	0.06	18.97	85.29	46	16	12	7.5
HDA150-Q-WA-CX-X3	PDF	450	360	15 to 1	5556	1.17	300	1111	0.06	18.97	85.29	46	16	12	7.5
HDA150-B-WB-CX-X3	PDF	450	360	30:1/18:1 (NA/LP)	5556	1.17	300	1111	0.06	18.97	85.29	46	16	12	7.5
HDA150-Q-WB-CX-X3	PDF	450	360	30:1/18:1 (NA/LP)	5556	1.17	300	1111	0.06	18.97	85.29	46	16	12	7.5
HDA200-B-WA-CX-X3	PDF	600	480	15 to 1	7407	2.01	300	1481	0.09	18.97	85.29	46	16	12	7.5
HDA200-Q-WA-CX-X3	PDF	600	480	15 to 1	7407	2.01	300	1481	0.09	18.97	85.29	46	16	12	7.5
HDA200-B-WB-CX-X3	PDF	600	480	30:1/18:1 (NA/LP)	7407	2.01	300	1481	0.09	18.97	85.29	46	16	12	7.5
HDA200-Q-WB-CX-X3	PDF	600	480	30:1/18:1 (NA/LP)	7407	2.01	300	1481	0.09	18.97	85.29	46	16	12	7.5
HDA250-B-WA-CX-X3	PDF	750	600	15 to 1	9259	2.49	300	1852	0.12	22.22	85.29	46	16	12	7.5
HDA250-Q-WA-CX-X3	PDF	750	600	15 to 1	9259	2.49	300	1852	0.12	22.22	85.29	46	16	12	7.5
HDA250-B-06-WB-CX-X3	PDF	750	600	30:1/18:1 (NA/LP)	9259	2.07	300	1852	0.09				16	12	7.5
HDA250-Q-06-WB-CX-X3	PDF	750	600	30:1/18:1 (NA/LP)	9259	2.07	300	1852	0.09				16	12	7.5
HDA300-B-WA-CX-X3	PDF	900	720	15 to 1	11111	2.895	300	2222	0.15	25.47	85.29	46	16	12	7.5
HDA300-Q-WA-CX-X3	PDF	900	720	15 to 1	11111	2.88	300	2222	0.15	25.47	85.29	46	16	12	7.5
HDA300-B-WB-CX-X3	PDF	900	720	30:1/18:1 (NA/LP)	11111	2.895	300	2222	0.15	25.47	85.29	46	16	12	7.5
HDA300-Q-WB-CX-X3	PDF	900	720	30:1/18:1 (NA/LP)	11111	2.88	300	2222	0.15	25.47	85.29	46	16	12	7.5
HDA350-B-WA-CX-X3	PDF	1050	840	15 to 1	12963	3.27	300	2593	0.18	28.72	85.29	46	16	12	7.5
HDA350-Q-WA-CX-X3	PDF	1050	840	15 to 1	12963	3.27	300	2593	0.18	28.72	85.29	46	16	12	7.5
HDA350-B-08-WB-CX-X3	PDF	1050	840	30:1/18:1 (NA/LP)	12963	2.79	300	2593	0.15				16	12	7.5
HDA350-Q-08-WB-CX-X3	PDF	1050	840	30:1/18:1 (NA/LP)	12963	2.79	300	2593	0.15				16	12	7.5
HDA400-B-WA-CX-X3	PDF	1200	960	15 to 1	14815	3.585	300	2963	0.18	31.97	85.29	46	16	12	7.5
HDA400-Q-WA-CX-X3	PDF	1200	960	15 to 1	14815	3.6	300	2963	0.18	31.97	85.29	46	16	12	7.5
HDA400-B-WB-CX-X3	PDF	1200	960	30:1/18:1 (NA/LP)	14815	3.585	300	2963	0.18	31.97	85.29	46	16	12	7.5
HDA400-Q-WB-CX-X3	PDF	1200	960	30:1/18:1 (NA/LP)	14815	3.6	300	2963	0.18	31.97	85.29	46	16	12	7.5
HDA500-B-WA-CX-X3	PDF	1500	1200	15 to 1	18519	4.125	300	3704	0.21	38.47	85.29	46	16	15	N/a
HDA500-Q-WA-CX-X3	PDF	1500	1200	15 to 1	18519	4.14	300	3704	0.21	38.47	85.29	46	16	15	N/a
HDA500-B-WB-CX-X3	PDF	1500	1200	30:1/18:1 (NA/LP)	18519	4.125	300	3704	0.21	38.47	85.29	46	16	15	N/a
HDA500-Q-WB-CX-X3	PDF	1500	1200	30:1/18:1 (NA/LP)	18519	4.14	300	3704	0.21	38.47	85.29	46	16	15	N/a
HDA600-B-WA-CX-X3	PDF	1800	1440	15 to 1	22222	4.56	300	4444	0.24	44.97	85.29	46	16	15	N/a
HDA600-B-WB-CX-X3	PDF	1800	1440	30:1/18:1 (NA/LP)	22222	4.56	300	4444	0.24	44.97	85.29	46	16	15	N/a
HDA600-Q-WA-CX-X3	PDF	1800	1440	15 to 1	22222	4.56	300	4444	0.24	44.97	85.29	46	16	15	N/a
HDA600-Q-WB-CX-X3	PDF	1800	1440	30:1/18:1 (NA/LP)	22222	4.56	300	4444	0.24	44.97	85.29	46	16	15	N/a

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

Select An Efficiency:

81%80%

Configurations with 30-80°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
HDA150 - 10:1/6:1 Mod (WB) (NA/LP)	H I J K L M N R S	150	122	10:1/6:1 Mod (WB) (NA/LP)	3750	0.01	80	1406	0.002	20.97	30.35	44.03	16	149	4	2.5
HDA150 - 5:1/3:1 Mod (WA) (NA/LP)	H I J K L M N R S	150	122	5:1/3:1 Mod (WA) (NA/LP)	3750	0.01	80	1406	0.002	20.97	30.35	44.03	16	149	4	2.5
HDA150 - One Stage (SN)	H I J K L M N R S	150	122	1 to 1	3750	0.01	80	1406	0.002	20.97	30.35	44.03	16	149	4	2.5
HDA150 - Two Stage (TN)	H I J K L M N R S	150	122	2 to 1	3750	0.01	80	1406	0.002	20.97	30.35	44.03	16	149	4	2.5
HDA200 - 10:1/6:1 Mod (WB) (NA/LP)	H I J K L M N R S	200	162	10:1/6:1 Mod (WB) (NA/LP)	5000	0.02	80	1875	0.003	20.97	30.35	44.03	16	149	4	2.5
HDA200 - 5:1/3:1 Mod (WA) (NA/LP)	H I J K L M N R S	200	162	5:1/3:1 Mod (WA) (NA/LP)	5000	0.02	80	1875	0.003	20.97	30.35	44.03	16	149	4	2.5
HDA200 - One Stage (SN)	H I J K L M N R S	200	162	1 to 1	5000	0.02	80	1875	0.003	20.97	30.35	44.03	16	149	4	2.5
HDA200 - Two Stage (TN)	H I J K L M N R S	200	162	2 to 1	5000	0.02	80	1875	0.003	20.97	30.35	44.03	16	149	4	2.5
HDA250 - 10:1/6:1 Mod (WB) (NA/LP)	H I J K L M N R S	250	202	10:1/6:1 Mod (WB) (NA/LP)	6250	0.03	80	2344	0.005	24.22	30.35	44.03	16	170	4	2.5
HDA250 - 5:1/3:1 Mod (WA) (NA/LP)	H I J K L M N R S	250	202	5:1/3:1 Mod (WA) (NA/LP)	6250	0.03	80	2344	0.005	24.22	30.35	44.03	16	170	4	2.5
HDA250 - One Stage (SN)	H I J K L M N R S	250	202	1 to 1	6250	0.03	80	2344	0.005	24.22	30.35	44.03	16	170	4	2.5
HDA250 - Two Stage (TN)	H I J K L M N R S	250	202	2 to 1	6250	0.03	80	2344	0.005	24.22	30.35	44.03	16	170	4	2.5
HDA300 - 10:1/6:1 Mod (WB) (NA/LP)	H I J K L M N R S	300	243	10:1/6:1 Mod (WB) (NA/LP)	7500	0.05	80	2813	0.009	27.47	30.35	44.03	16	182	4	2.5
HDA300 - 5:1/3:1 Mod (WA) (NA/LP)	H I J K L M N R S	300	243	5:1/3:1 Mod (WA) (NA/LP)	7500	0.05	80	2813	0.009	27.47	30.35	44.03	16	182	4	2.5
HDA300 - One Stage (SN)	H I J K L M N R S	300	243	1 to 1	7500	0.05	80	2813	0.009	27.47	30.35	44.03	16	182	4	2.5
HDA300 - Two Stage (TN)	H I J K L M N R S	300	243	2 to 1	7500	0.05	80	2813	0.009	27.47	30.35	44.03	16	182	4	2.5
HDA350 - 10:1/6:1 Mod (WB) (NA/LP)	H I J K L M N R S	350	284	10:1/6:1 Mod (WB) (NA/LP)	8750	0.08	80	3281	0.01	30.72	30.35	44.03	16	213	4	2.5
HDA350 - 5:1/3:1 Mod (WA) (NA/LP)	H I J K L M N R S	350	284	5:1/3:1 Mod (WA) (NA/LP)	8750	0.08	80	3281	0.01	30.72	30.35	44.03	16	213	4	2.5
HDA350 - One Stage (SN)	H I J K L M N R S	350	284	1 to 1	8750	0.08	80	3281	0.01	30.72	30.35	44.03	16	213	4	2.5
HDA350 - Two Stage (TN)	H I J K L M N R S	350	284	2 to 1	8750	0.08	80	3281	0.01	30.72	30.35	44.03	16	213	4	2.5
HDA400 - 10:1/6:1 Mod (WB) (NA/LP)	H I J K L M N R S	400	324	10:1/6:1 Mod (WB) (NA/LP)	10000	0.12	80	3750	0.02	33.97	30.35	44.03	16	238	4	2.5
HDA400 - 5:1/3:1 Mod (WA) (NA/LP)	H I J K L M N R S	400	324	5:1/3:1 Mod (WA) (NA/LP)	10000	0.12	80	3750	0.02	33.97	30.35	44.03	16	238	4	2.5
HDA400 - One Stage (SN)	H I J K L M N R S	400	324	1 to 1	10000	0.12	80	3750	0.02	33.97	30.35	44.03	16	238	4	2.5
HDA400 - Two Stage (TN)	H I J K L M N R S	400	324	2 to 1	10000	0.12	80	3750	0.02	33.97	30.35	44.03	16	238	4	2.5
HDA500 - 10:1/6:1 Mod (WB) (NA/LP)	H I J K L M N R S	500	405	10:1/6:1 Mod (WB) (NA/LP)	12500	0.22	80	4688	0.04	40.47	30.35	44.03	16	235	5	N/a
HDA500 - 5:1/3:1 Mod (WA) (NA/LP)	H I J K L M N R S	500	405	5:1/3:1 Mod (WA) (NA/LP)	12500	0.22	80	4688	0.04	40.47	30.35	44.03	16	235	5	N/a
HDA500 - One Stage (SN)	H I J K L M N R S	500	405	1 to 1	12500	0.22	80	4688	0.04	40.47	30.35	44.03	16	235	5	N/a
HDA500 - Two Stage (TN)	H I J K L M N R S	500	405	2 to 1	12500	0.22	80	4688	0.04	40.47	30.35	44.03	16	235	5	N/a
HDA600 - 10:1/6:1 Mod (WB) (NA/LP)	H I J K L M N R S	600	486	10:1/6:1 Mod (WB) (NA/LP)	15000	0.38	80	5625	0.06	46.97	30.35	44.03	16	255	5	N/a
HDA600 - 5:1/3:1 Mod (WA) (NA/LP)	H I J K L M N R S	600	486	5:1/3:1 Mod (WA) (NA/LP)	15000	0.38	80	5625	0.06	46.97	30.35	44.03	16	255	5	N/a
HDA600 - One Stage (SN)	H I J K L M N R S	600	486	1 to 1	15000	0.38	80	5625	0.06	46.97	30.35	44.03	16	255	5	N/a
HDA600 - Two Stage (TN)	H I J K L M N R S	600	486	2 to 1	15000	0.38	80	5625	0.06	46.97	30.35	44.03	16	255	5	N/a

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

Configurations with 20-60°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
HDA150 - 10:1/6:1 Mod (MB) (NA/LP)	H I J K L M N R S	150	120	10:1/6:1 (NA/LP)	5556	0.02	60	1852	0.01	28.45	19	46	14	149	4	2.5
HDA150 - 5:1/3:1 Mod (WA) (NA/LP)	H I J K L M N R S	150	120	5:1/3:1 Mod (WA) (NA/LP)	5556	0.02	60	1852	0.01	28.45	19	46	14	149	4	2.5
HDA150 - 10:1/6:1 Mod (WB) (NA/LP)	H I J K L M N R S	150	120	10:1/6:1 Mod (WB) (NA/LP)	5556	0.02	60	1852	0.01	28.45	19	46	14	149	4	2.5
HDA150 - One Stage	H I J K L M N R S	150	120	1 to 1	5556	0.02	60	1852	0.01	28.45	19	46	14	149	4	2.5
HDA150 - Two Stage (TN)	H I J K L M N R S	150	120	2 to 1	5556	0.02	60	1852	0.01	28.45	19	46	14	149	4	2.5
HDA150 - Two Stage (TS)	H I J K L M N R S	150	120	2 to 1	5556	0.02	60	1852	0.01	28.45	19	46	14	149	4	2.5
HDA200 - 10:1/6:1 Mod (MB) (NA/LP)	H I J K L M N R S	200	160	10:1/6:1 (NA/LP)	7407	0.03	60	2469	0.01	28.45	19	46	14	149	4	2.5
HDA200 - 5:1/3:1 Mod (WA) (NA/LP)	H I J K L M N R S	200	160	5:1/3:1 Mod (WA) (NA/LP)	7407	0.03	60	2469	0.01	28.45	19	46	14	149	4	2.5
HDA200 - 10:1/6:1 Mod (WB) (NA/LP)	H I J K L M N R S	200	160	10:1/6:1 Mod (WB) (NA/LP)	7407	0.03	60	2469	0.01	28.45	19	46	14	149	4	2.5
HDA200 - One Stage	H I J K L M N R S	200	160	1 to 1	7407	0.03	60	2469	0.01	28.45	19	46	14	149	4	2.5
HDA200 - Two Stage (TN)	H I J K L M N R S	200	160	2 to 1	7407	0.03	60	2469	0.01	28.45	19	46	14	149	4	2.5
HDA200 - Two Stage (TS)	H I J K L M N R S	200	160	2 to 1	7407	0.03	60	2469	0.01	28.45	19	46	14	149	4	2.5
HDA250 - 10:1/6:1 Mod (MB) (NA/LP)	H I J K L M N R S	250	200	10:1/6:1 (NA/LP)	9259	0.06	60	3086	0.01	28.45	25.57	46	14	170	4	2.5
HDA250 - 5:1/3:1 Mod (WA) (NA/LP)	H I J K L M N R S	250	200	5:1/3:1 Mod (WA) (NA/LP)	9259	0.06	60	3086	0.01	28.45	25.57	46	14	170	4	2.5
HDA250 - 10:1/6:1 Mod (WB) (NA/LP)	H I J K L M N R S	250	200	10:1/6:1 Mod (WB) (NA/LP)	9259	0.06	60	3086	0.01	28.45	25.57	46	14	170	4	2.5
HDA250 - One Stage	H I J K L M N R S	250	200	1 to 1	9259	0.06	60	3086	0.01	28.45	25.57	46	14	170	4	2.5
HDA250 - Two Stage (TN)	H I J K L M N R S	250	200	2 to 1	9259	0.06	60	3086	0.01	28.45	25.57	46	14	170	4	2.5
HDA250 - Two Stage (TS)	H I J K L M N R S	250	200	2 to 1	9259	0.06	60	3086	0.01	28.45	25.57	46	14	170	4	2.5
HDA300 - 10:1/6:1 Mod (MB) (NA/LP)	H I J K L M N R S	300	240	10:1/6:1 (NA/LP)	11111	0.11	60	3704	0.02	28.45	22.5	46	14	182	4	2.5
HDA300 - 5:1/3:1 Mod (WA) (NA/LP)	H I J K L M N R S	300	240	5:1/3:1 Mod (WA) (NA/LP)	11111	0.11	60	3704	0.02	28.45	22.5	46	14	182	4	2.5
HDA300 - 10:1/6:1 Mod (WB) (NA/LP)	H I J K L M N R S	300	240	10:1/6:1 Mod (WB) (NA/LP)	11111	0.11	60	3704	0.02	28.45	22.5	46	14	182	4	2.5
HDA300 - One Stage	H I J K L M N R S	300	240	1 to 1	11111	0.11	60	3704	0.02	28.45	22.5	46	14	182	4	2.5
HDA300 - Two Stage (TN)	H I J K L M N R S	300	240	2 to 1	11111	0.11	60	3704	0.02	28.45	22.5	46	14	182	4	2.5
HDA300 - Two Stage (TS)	H I J K L M N R S	300	240	2 to 1	11111	0.11	60	3704	0.02	28.45	22.5	46	14	182	4	2.5
HDA350 - 10:1/6:1 Mod (MB) (NA/LP)	H I J K L M N R S	350	280	10:1/6:1 (NA/LP)	12963	0.17	60	4321	0.02	28.45	32.07	46	14	213	4	2.5
HDA350 - 5:1/3:1 Mod (WA) (NA/LP)	H I J K L M N R S	350	280	5:1/3:1 Mod (WA) (NA/LP)	12963	0.17	60	4321	0.02	28.45	32.07	46	14	213	4	2.5
HDA350 - 10:1/6:1 Mod (WB) (NA/LP)	H I J K L M N R S	350	280	10:1/6:1 Mod (WB) (NA/LP)	12963	0.17	60	4321	0.02	28.45	32.07	46	14	213	4	2.5
HDA350 - One Stage	H I J K L M N R S	350	280	1 to 1	12963	0.17	60	4321	0.02	28.45	32.07	46	14	213	4	2.5
HDA350 - Two Stage (TN)	H I J K L M N R S	350	280	2 to 1	12963	0.17	60	4321	0.02	28.45	32.07	46	14	213	4	2.5
HDA350 - Two Stage (TS)	H I J K L M N R S	350	280	2 to 1	12963	0.17	60	4321	0.02	28.45	32.07	46	14	213	4	2.5
HDA400 - 10:1/6:1 Mod (MB) (NA/LP)	H I J K L M N R S	400	320	10:1/6:1 (NA/LP)	14815	0.25	60	4938	0.03	28.45	32.07	46	14	238	4	2.5
HDA400 - 5:1/3:1 Mod (WA) (NA/LP)	H I J K L M N R S	400	320	5:1/3:1 Mod (WA) (NA/LP)	14815	0.25	60	4938	0.03	28.45	32.07	46	14	238	4	2.5
HDA400 - 10:1/6:1 Mod (WB) (NA/LP)	H I J K L M N R S	400	320	10:1/6:1 Mod (WB) (NA/LP)	14815	0.25	60	4938	0.03	28.45	32.07	46	14	238	4	2.5
HDA400 - One Stage	H I J K L M N R S	400	320	1 to 1	14815	0.25	60	4938	0.03	28.45	32.07	46	14	238	4	2.5
HDA400 - Two Stage (TN)	H I J K L M N R S	400	320	2 to 1	14815	0.25	60	4938	0.03	28.45	32.07	46	14	238	4	2.5
HDA400 - Two Stage (TS)	H I J K L M N R S	400	320	2 to 1	14815	0.25	60	4938	0.03	28.45	32.07	46	14	238	4	2.5
HDA500 - 10:1/6:1 Mod (MB) (NA/LP)	H I J K L M N R S	500	400	10:1/6:1 (NA/LP)	18519	0.47	60	6173	0.06	28.45	38.57	44.07	16	235	5	N/a
HDA500 - 5:1/3:1 Mod (WA) (NA/LP)	H I J K L M N R S	500	400	5:1/3:1 Mod (WA) (NA/LP)	18519	0.47	60	6173	0.06	28.45	38.57	44.07	16	235	5	N/a
HDA500 - 10:1/6:1 Mod (WB) (NA/LP)	H I J K L M N R S	500	400	10:1/6:1 Mod (WB) (NA/LP)	18519	0.47	60	6173	0.06	28.45	38.57	44.07	16	235	5	N/a
HDA500 - Two Stage (TS)	H I J K L M N R S	500	400	2 to 1	18519	0.47	60	6173	0.06	28.45	38.57	44.07	16	235	5	N/a
HDA600 - 10:1/6:1 Mod (MB) (NA/LP)	H I J K L M N R S	600	480	10:1/6:1 (NA/LP)	22222	0.79	60	7407	0.1	28.35	44.97	44.07	16	255	5	N/a
HDA600 - 5:1/3:1 Mod (WA) (NA/LP)	H I J K L M N R S	600	480	5:1/3:1 Mod (WA) (NA/LP)	22222	0.79	60	7407	0.1	28.35	44.97	44.07	16	255	5	N/a
HDA600 - 10:1/6:1 Mod (WB) (NA/LP)	H I J K L M N R S	600	480	10:1/6:1 Mod (WB) (NA/LP)	22222	0.79	60	7407	0.1	28.35	44.97	44.07	16	255	5	N/a
HDA600 - Two Stage (TS)	H I J K L M N R S	600	480	2 to 1	22222	0.79	60	7407	0.1	28.35	44.97	44.07	16	255	5	N/a

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

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Select An Efficiency:

Configurations with 30-100°F Temp Rise

Configurations with 20-100°F Temp Rise

Select An Efficiency:

HDA-B-CX-X2

HDA-B-CX-X2

Select An Efficiency:

HDA-Q-CX-X2

Select An Efficiency:

HDA-CX-X3

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Configurations with 30-80°F Temp Rise

Configurations with 20-60°F Temp Rise