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300DD-EC Forward Curved Roof Exhauster

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300DD-EC Forward Curved Roof Exhauster

SKU#:

300DD-EC SERIES

High efficiency direct drive motor for energy efficient low maintenance applications.
Square base allows discharge to be oriented in any of 4 directions.
Back draft damper and bird screen included.
Cabinet insulated with 1/2” fiberglass insulation.
EC Motor offers true variable speed operation and up to 70% energy savings over PSC motors.

MODEL	MOTOR			TYPICAL MAXIMUM CFM @ SP
	HP	Variable Speed	Max RPM	Speed	1/4"				1/2"				3/4"				1"				1 1/4"
	HP	Variable Speed	Max RPM	Speed	CFM	BHP	FEI	FEPact (KW)	CFM	BHP	FEI	FEPact (KW)	CFM	BHP	FEI	FEPact (KW)	CFM	BHP	FEI	FEPact (KW)	CFM	BHP	FEI	FEPact (KW)
309DD050EC	1/2	Y*	1200	High	1500	-	-	-	1325	-	-	-	1200	-	-	-	950	-	-	-	300	-	-	-
309DD050EC	1/2	Y*	1200	Low	500	-	-	-	500	-	-	-	500	-	-	-	500	-	-	-	300	-	-	-
309DD100EC	1	Y*	1200	High	1800	0.76	0.57	0.69	1500	0.63	0.77	0.58	1200	0.54	0.93	0.51	950	0.44	1.13	0.42	300	0.27	1.03	0.28
309DD100EC	1	Y*	1200	Low	500	0.06	1.89	0.09	500	0.11	1.64	0.13	500	0.17	1.44	0.19	500	0.25	1.23	0.26	300	0.27	1.03	0.28
310DD050EC	1/2	Y*	1100	High	1800	-	-	-	1500	-	-	-	1300	-	-	-	1050	-	-	-	-	-	-	-
310DD050EC	1/2	Y*	1100	Low	600	-	-	-	400	-	-	-	400	-	-	-	400	-	-	-	-	-	-	-
310DD100EC	1	Y*	1100	High	2375	0.96	0.56	0.86	2100	0.92	0.71	0.82	1800	0.86	0.82	0.77	1200	0.52	1.14	0.49	700	0.42	1.11	0.41
310DD100EC	1	Y*	1100	Low	600	0.06	2.07	0.09	400	0.11	1.47	0.13	400	0.16	1.34	0.18	400	0.20	1.32	0.21	400	0.25	1.25	0.26
312DD050EC	1/2	Y*	1000	High	2250	-	-	-	1850	-	-	-	1550	-	-	-	1250	-	-	-	1000	-	-	-
312DD050EC	1/2	Y*	1000	Low	800	-	-	-	600	-	-	-	600	-	-	-	600	-	-	-	600	-	-	-
312DD100EC	1	Y*	1000	High	3000	0.95	0.68	0.85	2700	0.97	0.82	0.87	2400	0.98	0.92	0.87	2125	0.99	0.98	0.88	1600	0.81	1.09	0.73
312DD100EC	1	Y*	1000	Low	800	0.11	1.66	0.13	600	0.13	1.60	0.15	600	0.21	1.34	0.22	600	0.26	1.32	0.27	600	0.34	1.21	0.34
*Minimum motor speed 425 RPM (EC Models).
EC Motors can be controlled using the built in potentiometer on motor or by using a 0 to 10 V controller, or by a remote potentiometer.
REVIEW FAN CURVES BEFORE ADJUSTING RPM TO ENSURE LOAD DOES NOT EXCEED MOTOR HP.


D is an inside dimension. Curb size must be smaller to allow for flashing.
MODEL	A	B	C	* D INSIDE	SHAFT DIAMETER	WEIGHT (lbs) without motor
MODEL	A	B	C	* D INSIDE	SHAFT DIAMETER	WEIGHT (lbs) without motor
309DD	24 3/8"	19 3/8"	10 5/8"	24"	3/4"	63
310DD	28 3/8"	21 3/8"	11 3/8"	28"	3/4"	88
312DD	32 3/8"	24 5/8"	13 1/8"	32"	3/4"	113