York DJ 048 Belt Drive Blower Motor And Drive Data, Static Resistances, 036-21687-002-A-1105

036-21687-002-A-1105

TABLE 25: BELT DRIVE BLOWER MOTOR AND DRIVE DATA

MOTOR1

ADJUSTABLE MOTOR PULLEY

FIXED BLOWER PULLEY

BELT

MODEL

BLOWER

(NOTCHED)

SIZE

RANGE

DESIG-

OUTSIDE

PITCH

BORE

DESIG-

OUTSIDE

PITCH

BORE

DESIG-

PITCH

(RPM)

HP

FRAME

NATION

DIA.

DIA.

(IN.)

NATION

DIA.

DIA.

(IN.)

NATION

LENGTH

QTY.

(IN.)

(IN.)

(IN.)

(IN.)

(IN.)

DJ036

600/920

1-1/2

56

1VL40

2.7-3.7

2.4-3.4

5/8

AK74

7.2

7.0

1

A39

40.3

1

DJ048

790/1120

1-1/2

56

1VL40

2.7-3.7

2.4-3.4

5/8

AK61

5.9

5.7

1

A36

37.3

1

DJ060

850/1220

1-1/2

56

1VL40

2.7-3.7

2.4-3.4

5/8

AK56

5.4

5.2

1

A36

37.3

1

1.All motors have solid bases and are inherently protected. These motors can be selected to operate into their service factor because they are located in the moving air, upstream of any heating device.

TABLE 26: STATIC RESISTANCES

						RESISTANCE, IWG
DESCRIPTION							CFM
		1000	1200	1400	1600	1800	2000	2200	2400	2600	2800	3000
ECONOMIZER1,3		0.07	0.08	0.09	0.11	0.13	0.15	0.17	0.20	0.23	0.26	0.30
ELECTRIC	7-15KW	0.04	0.05	0.06	0.07	0.08	0.10	0.12	0.14	0.16	0.19	0.22
HEATERS1
	20-30KW	0.06	0.07	0.08	0.09	0.11	0.13	0.15	0.17	0.20	0.23	0.26
COOLING ONLY2		0.08	0.10	0.12	0.14	0.16	0.18	0.20	0.23	0.26	0.29	0.32

1.Deduct these resistance values from the available external static pressure shown in SUPPLY AIR BLOWER PERFORMANCE Tables.

2.Add these resistance values to the available static resistance values on SUPPLY AIR BLOWER PERFORMANCE Tables.

3.The pressure through the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return air duct system is less than 0.25 IWG, the unit will deliver less CFM during full economizer operation.

TABLE 27: ELECTRIC HEATER CFM LIMITATIONS

				MINIMUM SUPPLY AIR CFM
UNIT MODEL SIZE
	VOLTAGE			HEATER SIZE NOMINAL KW
NOMINAL TONS
		5	7		10	15	20	30
	208/230-1-60	1100	1100		1200	1200	1300	-
3	208/230-3-60	1100	1100		1200	1200	1300	-
	460-3-60	-	1100		1200	1200	1300	-
	575-3-60	-	-		1200	1200	1300	-
	208/230-1-60	1300	1300		1300	1300	1300	-
4	208/230-3-60	1300	1300		1300	1300	1300	-
	460-3-60	-	1300		1300	1300	1300	-
	575-3-60	-	-		1300	1300	1400	-
	208/230-1-60	1600	1600		1600	1600	1600	1600
5	208/230-3-60	1600	1600		1600	1600	1600	1600
	460-3-60	1600	1600		1600	1600	1600	1600
	575-3-60	-	1600		1600	1600	1600	1800

30 Unitary Products Group