Static Resistances; Blower Motor And Drive Data - York WJ 180 Technical Manual

262291-YTG-F-1009
TABLE 20: BLOWER MOTOR AND DRIVE DATA
BLOWER
MODEL
DRIVE RANGE
SIZE
(RPM)
Standard 795/970
15 TON
High Static 935/1140 7.5
Low Static 850/1010 7.5
20 TON Standard 850/1010
High Static 930/1110
Low Static 915/1100 7.5
25 TON Standard 915/1100
High Static 1015/1200 15
1.
All motors have a nominal speed of 1800 RPM, a 1.15 service factor and a solid base. They can operate to the limit of their service factor because
they are located in the moving air, upstream of any heating device.
2.
Do NOT close this pulley below 1 turn open.
TABLE 21: STATIC RESISTANCES
DESCRIPTION
WET INDOOR COIL
RECLAIM COIL OPTIONS
ELECTRIC HEAT OPTIONS
ECONOMIZER OPTION
HORIZONTAL DUCT CONNECTIONS
1.
Deduct these resistance values from the available external static pressures shown in the respective Blower Performance Table.
2.
Since the resistance to air flow will be less for horizontal duct connections than for bottom duct connections, add these pressures
to the ESP values on the respective unit's blower performance table.
TABLE 22: POWER EXHAUST PERFORMANCE
MOTOR
1
SPEED
CFM
2
5250
HIGH
MEDIUM
4900
LOW
4400
1.
Power exhaust motor is a 3/4 HP, PSC type with sleeve bearings, a 48 frame and inherent protection.
2.
The factory setting.
30
1
MOTOR ADJUSTABLE MOTOR PULLEY
OUTSIDE
EFF. DESIG-
HP FRAME
(%) NATION
5 184 T 89.5 1VP62
213 T 91 1VP62
213T 91 1VP68
10 215T 91 1VP68
10 215 T 91 1VP68
213T 91 1VP65
15 254T 91 1VP65
254 T 91 1VP71
1
4500
0.1
2 ROW 0.1
3 ROW 0.2
18 KW 0.3
36 KW 0.3
54 KW 0.4
72 KW 0.4
0.1
2
0.1
STATIC RESISTANCE OF RETURN DUCTWORK, IWG
0.2
kW CFM
0.83 4500
0.77 3900
0.72 3700
PITCH
BORE DESIG-
DIA. DIA.
(IN.) NATION
(IN.) (IN.)
2
5.95 4.9-5.9 1-1/8 BK105
2
5.95 1-3/8 BK90
4.9-5.9
2
6.55 5.5-6.5 1-3/8 BK110
2
6.55 5.5-6.5 1-3/8 BK110
2
6.55 5.5-6.5 1-3/8 BK100
6.5 4.8-6.0 1-3/8 1B5V94
6.5 4.8-6.0 1-5/8 1B5V94
7.1 5.4-6.6 1-5/8 1B5V94
RESISTANCE, IWG
15 TON
6000 7500 6000
0.1 0.1 0.1
0.2 0.2 0.2
0.3 0.4 0.3
0.4 0.4 0.4
0.4 0.5 0.4
0.5 0.5 0.5
0.5 0.5 0.5
0.1 0.1 0.1
0.2 0.3 0.2
0.3 0.4
kW CFM
0.85 4200
0.79 3500
0.74 3000
FIXED BLOWER PULLEY
OUTSIDE PITCH
BORE DESIG-
DIA. DIA.
(IN.) NATION
(IN.) (IN.)
10.25 9.9 1
8.75 8.4 1
10.75 10.4 1-3/16
10.75 10.4 1-3/16
9.75 9.4 1-3/16
9.7 9.5 1-3/16
9.7 9.5 1-7/16
9.7 9.5 1-7/16
CFM
20 TON
8000 9000 7500
0.1 0.2 0.1
0.3 0.3 0.2
0.4 0.5 0.4
0.4 0.5 0.4
0.5 0.5 0.5
0.5 0.6 0.5
0.5 0.6 0.5
0.1 0.2 0.1
0.3 0.5 0.3
0.5
kW CFM kW
0.88 3750 0.93
0.82 2900 0.85
0.78 - -
Johnson Controls Unitary Products
BELT
(NOTCHED)
PITCH
LENGTH QTY.
(IN.)
BX81 82.8 1
BX81 82.8 1
BX81 82.8 1
BX81 82.8 1
BX81 82.8 1
BX78 79.8 1
BX78 79.8 1
BX81 82.8 1
25 TON
8000 9300
0.1 0.2
0.3 0.3
0.4 0.5
0.4 0.5
0.5 0.5
0.5 0.6
0.5 0.6
0.1 0.2
0.3 0.5
0.6
CFM kW
3000 0.99
- -
- -