HDB-HHX Outdoor Venting Units

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

Note: You must be logged in to view CAD, Gas Train and Wiring Diagram files.

Model Number	PDF	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	PDF	PDF		PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	N/a	N/a	N/a	PDF	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	PDF	PDF		PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	N/a	N/a	N/a	PDF	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	PDF	PDF		PDF	PDF	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	PDF	N/a	N/a	N/a	PDF	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	PDF	PDF		PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	N/a	N/a	PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	N/a	N/a	PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	N/a	N/a	PDF	PDF	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	PDF	N/a	N/a	PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	N/a	N/a	N/a	PDF	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	PDF	PDF		PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	N/a	N/a	N/a	PDF	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	PDF	PDF		PDF	PDF	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	PDF	N/a	N/a	N/a	PDF	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	PDF	PDF		PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	PDF		N/a	PDF	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	PDF	PDF		PDF	PDF	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	PDF	N/a	N/a	PDF	PDF	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	PDF	N/a	N/a	N/a	PDF	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	PDF	N/a	N/a	PDF	PDF	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	PDF	N/a	N/a	N/a	PDF	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	PDF	PDF		N/a	PDF	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	PDF	N/a	N/a	PDF	PDF	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	PDF	N/a	N/a	PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	N/a	N/a	N/a	PDF	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	PDF	N/a	N/a	N/a	PDF	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	PDF	N/a	N/a	PDF	PDF	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	PDF	PDF		PDF	PDF	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	PDF	N/a	N/a	N/a	PDF	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	PDF	N/a	N/a	PDF	PDF	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	PDF	N/a	N/a	N/a	PDF	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	PDF	N/a	N/a	PDF	PDF	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	PDF	N/a	N/a	PDF	PDF	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	PDF	N/a	N/a	PDF	PDF	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	PDF	N/a	N/a	PDF	PDF	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	PDF	N/a	N/a	PDF	PDF	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	PDF	N/a	N/a	PDF	PDF	5000	4000	125	100	40 to 1	1250	4	185185	1.07	65	56980	0.12	117.75	48	79	22	3231	40

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