York DM090 installation manual 12-1/2 TON Standard Motor Down Shot Blower PERFORMANCE* †

Blower performance for gas heat includes maximum number of heat tubes available for each tonnage.

Blower performance for gas heat includes maximum number of heat tubes available for each tonnage.

035-17311-003-A-0704

TABLE 21: 12-1/2 TON STANDARD MOTOR DOWN SHOT BLOWER PERFORMANCE* †

									TURNS OPEN**
ESP‡		0			1			2				3			4			5
	CFM	W††	BHP	CFM	W††	BHP	CFM	W††		BHP	CFM	W††	BHP	CFM	W††	BHP	CFM	W††	BHP
0.4	5078	3630	3.89	4809	3103	3.33	4594	3053		3.27	4360	2478	2.66	4090	2093	2.24	3812	1798	1.93
0.6	4865	3456	3.71	4584	2961	3.17	4349	2912		3.12	4106	2318	2.49	3814	1964	2.11	-	-	-
0.8	4642	3284	3.52	4356	2828	3.03	4089	2776		2.98	3840	2137	2.29	-	-	-	-	-	-
1.0	4408	3114	3.34	4124	2705	2.90	3815	2647		2.84	-	-	-	-	-	-	-	-	-
1.2	4164	2947	3.16	3889	2592	2.78	-	-		-	-	-	-	-	-	-	-	-	-
1.4	3910	2787	2.99	-	-	-	-	-		-	-	-	-	-	-	-	-	-	-

*.

†.Blower performance includes two-inch throwaway filters.

‡.ESP (External Static Pressure) given is that available for the supply and return air duct system. All internal resistances have been deducted from the total static pressure of the blower.

**. “Turns Open” refers to the setting of the variable pitch motor sheave, where “0 Turns Open” is fully closed.

††.W = Watts

TABLE 22: 12-1/2 TON OPTIONAL MOTOR DOWN SHOT BLOWER PERFORMANCE* †

									TURNS OPEN**
ESP‡		0			1			2				3			4			5
	CFM	W††	BHP	CFM	W††	BHP	CFM	W††		BHP	CFM	W††	BHP	CFM	W††	BHP	CFM	W††	BHP
0.4	5994	5400	5.79	5565	4369	4.69	5488	4169		4.47	5264	3599	3.86	4990	3085	3.31	4738	2812	3.02
0.6	5824	5216	5.59	5368	4186	4.49	5289	3991		4.28	5049	3437	3.69	4763	2937	3.15	4491	2655	2.85
0.8	5641	5022	5.39	5170	4012	4.30	5076	3807		4.08	4822	3272	3.51	4528	2790	2.99	4235	2497	2.68
1.0	5444	4819	5.17	4971	3846	4.12	4847	3618		3.88	4584	3103	3.33	4286	2644	2.83	3969	2340	2.51
1.2	5233	4609	4.94	4771	3687	3.95	4604	3426		3.67	4335	2933	3.15	4035	2499	2.68	-	-	-
1.4	5009	4394	4.71	4571	3537	3.79	4346	3233		3.47	4074	2762	2.96	3777	2356	2.53	-	-	-
1.6	4771	4174	4.48	4370	3395	3.64	4074	3040		3.26	3802	2590	2.78	-	-	-	-	-	-
1.8	4520	3951	4.24	4169	3262	3.50	3786	2850		3.06	-	-	-	-	-	-	-	-	-
2.0	4255	3728	4.00	3966	3137	3.36	-	-		-	-	-	-	-	-	-	-	-	-
2.2	3976	3505	3.76	3763	3020	3.24	-	-		-	-	-	-	-	-	-	-	-	-

*.

†.Blower performance includes two-inch throwaway filters.

‡.ESP (External Static Pressure) given is that available for the supply and return air duct system. All internal resistances have been deducted from the total static pressure of the blower.

**. “Turns Open” refers to the setting of the variable pitch motor sheave, where “0 Turns Open” is fully closed.

††.W = Watts

Unitary Products Group 27