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284812-YIM-D-1008
TABLE 28: 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 29: POWER EXHAUST PERFORMANCE
MOTOR
0.2
SPEED
CFM
HIGH*
5250
MEDIUM
4900
LOW
4400
* Factory Setting
Power Exhaust motor is a 3/4 HP, PSC type with sleeve bearings, a 48 frame and inherent protection.
TABLE 30: 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 Statics
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.
52
1
15 TON
4500
6000
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
0.3
KW
CFM
KW
0.83
4500
0.85
0.77
3900
0.79
0.72
3700
0.74
1
MOTOR
ADJUSTABLE MOTOR PULLEY
OUTSIDE
EFF.
DESIG-
HP FRAME
DIA.
(%)
NATION
(IN.)
5
184 T
89.5
1VP62
5.95
213 T
91
1VP62
5.95
213T
91
1VP68
6.55
10
215T
91
1VP68
6.55
10
215 T
91
1VP68
6.55
213T
91
1VP65
6.5
15
254T
91
1VP65
6.5
254 T
91
1VP71
7.1
RESISTANCE, IWG
CFM
20 TON
7500
6000
8000
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
0.4
CFM
KW
4200
0.88
3500
0.82
3000
0.78
FIXED BLOWER PULLEY
PITCH
BORE
DESIG-
DIA.
(IN.)
NATION
(IN.)
2
4.9-5.9
1-1/8
BK105
2
1-3/8
BK90
4.9-5.9
2
5.5-6.5
1-3/8
BK110
2
5.5-6.5
1-3/8
BK110
2
5.5-6.5
1-3/8
BK100
4.8-6.0
1-3/8 1B5V94
4.8-6.0
1-5/8 1B5V94
5.4-6.6
1-5/8 1B5V94
25 TON
9000
7500
8000
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
CFM
KW
CFM
3750
0.93
3000
2900
0.85
-
-
-
-
(NOTCHED)
OUTSIDE
PITCH
BORE
DESIG-
DIA.
DIA.
(IN.)
NATION
(IN.)
(IN.)
10.25
9.9
1
BX81
8.75
8.4
1
BX81
10.75
10.4
1-3/16
BX81
10.75
10.4
1-3/16
BX81
9.75
9.4
1-3/16
BX81
9.7
9.5
1-3/16
BX78
9.7
9.5
1-7/16
BX78
9.7
9.5
1-7/16
BX81
Johnson Controls Unitary Products
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
KW
0.99
-
-
BELT
PITCH
LENGTH
QTY.
(IN.)
82.8
1
82.8
1
82.8
1
82.8
1
82.8
1
79.8
1
79.8
1
82.8
1
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