66396-YIM-C-1004
24
Unitary Products Group
* Factory Setting
Power Exhaust motor is a 3/4 HP, PSC type with sleeve bearings, a 48 frame and inherent protection.
TABLE 16: STATIC RESISTANCES
1
DESCRIPTION
RESISTANCE, IWG/Pa
m
3
/s (CFM)
20 TON
2.9 (6000)
3.8 (8000)
4.5 (9400)
WET INDOOR COIL
0.1/25
0.1/25
0.1/25
ELECTRIC HEAT OPTIONS
18 KW
0.1/25
0.1/25
0.1/25
36 KW
0.1/25
0.2/50
0.3/75
54 KW
0.2/50
0.3/75
0.4/100
72 KW
0.2/50
0.4/100
0.6/150
ECONOMIZER OPTION
0.1/25
0.1/75
0.1/25
HORIZONTAL DUCT CONNECTIONS
2
0.2/50
0.3/75
0.5/125
1.
Deduct these resistance values from the available external static pressures shown in the respective Blower Performance Table (See Note 2 for
exception.)
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 17: POWER EXHAUST PERFORMANCE
MOTOR
SPEED
STATIC RESISTANCE OF RETURN DUCTWORK, IWG/Pa
0.2/50
0.3/75
0.4/100
0.5/125
0.6/150
m
3
/s (CFM)
KW
m
3
/s (CFM)
KW
m
3
/s (CFM)
KW
m
3
/s (CFM)
KW
m
3
/s (CFM)
KW
HIGH*
2.47 (5250)
0.83
2.12 (4500)
0.85
1.98 (4200)
0.88
1.77 (3750)
0.93
1.41 (3000)
0.99
MEDIUM
2.31 (4900)
0.77
1.84 (3900)
0.79
1.65 (3500)
0.82
1.37 (2900)
0.85
-
-
LOW
2.07 (4400)
0.72
1.74 (3700)
0.74
1.41 (3000)
0.78
-
-
-
-
TABLE 18: BLOWER MOTOR AND DRIVE DATA
UNIT
SIZE
(MBH)
BLOWER
RANGE
(RPM)
MOTOR
1
ADJUSTABLE MOTOR PULLEY
2
FIXED BLOWER PULLEY
BELT
(NOTCHED)
kW/HP
FRAME
SIZE
EFF.
(%)
PITCH DIA.
(mm / in.)
BORE
(mm / in.)
DESIG-
NATION
PITCH DIA.
(mm / in.)
BORE
(mm / in.)
DESIG-
NATION
PITCH
LENGTH
(mm/in.)
DESIG-
NATION
QTY.
240
STD
DRIVE
765 - 905
5.6/7.5
213T
89
140 - 165/
5.5 - 6.5
35 / 1-3/8
1VP68
264 / 10.4
30 / 1-3/16
BK110
2078 / 81.8
BX80
1
HIGH
SPEED
DRIVE
895-1080
5.6/7.5
213T
87
147-178
5.8-7.0
35 / 1-3/8
1VP75
239 / 9.4
30 / 1-3/16
BK100
2103 / 82.8
BX81
1
1.
All motors are 1450 RPM, have solid bases and a 1.10 service factor.
2.
Do NOT close this pulley below 1 turn open.
