036-21630-001-B-0904

TABLE 6: BELT DRIVE BLOWER MOTOR AND DRIVE DATA

 

 

MOTOR1

ADJUSTABLE MOTOR PULLEY

 

FIXED BLOWER PULLEY

 

 

BELT

 

MODEL

BLOWER

 

 

(NOTCHED)

 

RANGE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SIZE

 

 

DESIG-

OUTSIDE

PITCH

 

BORE

DESIG-

OUTSIDE

PITCH

 

BORE

DESIG-

PITCH

 

(RPM)

HP

FRAME

DIA.

DIA.

 

DIA.

DIA.

 

LENGTH

QTY.

 

NATION

 

(IN.)

NATION

 

(IN.)

NATION

 

 

 

 

 

 

 

 

 

(IN.)

(IN.)

 

 

 

(IN.)

(IN.)

 

 

 

(IN.)

 

6 TON

900/1250

1 1/2

56

1VL44

3.1-4.1

2.8-3.8

 

7/8

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 7: 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

BOTTOM DUCT CONNECTIONS1

0.06

0.07

0.08

0.09

0.10

0.11

0.12

0.14

0.16

0.19

0.22

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 8: ELECTRIC HEATER CFM LIMITATIONS

UNIT MODEL SIZE NOMINAL

 

 

 

MINIMUM SUPPLY AIR CFM

 

 

VOLTAGE

 

 

 

 

 

 

 

 

HEATER SIZE NOMINAL KW

 

 

TONS

 

 

 

 

 

 

 

 

 

 

 

 

 

5

7

10

15

20

30

 

208/230-1-60

1800

1800

1800

1800

1800

1800

6

208/230-3-60

1800

1800

1800

1800

1800

1800

 

 

 

 

 

 

 

460-3-60

-

1800

1800

1800

1800

1800

 

 

 

 

 

 

 

 

 

 

575-3-60

-

-

1800

1800

1800

1800

 

 

 

 

 

 

 

 

Unitary Products Group

19

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York BP 072 warranty Belt Drive Blower Motor and Drive Data, Static Resistances, Electric Heater CFM Limitations

BP 072 specifications

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