TABLE 11
- POWER EXHAUST PERFORMANCE
TABLE 12
- BLOWER MOTOR AND DRIVE DATA
MODEL
SIZE
DRIVE
BLOWER
RANGE
(RPM)
MOTOR
1
ADJUSTABLE MOTOR PULLEY FIXED BLOWER PULLEY
BELT
(NOTCHED)
HP FRAME
EFF.
(%)
DESIG-
NATION
OUT-
SIDE
DIA.
(IN.)
PITCH
DIA.
(IN.)
BORE
(IN.)
DESIG-
NATION
OUTSIDE
DIA.
(IN.)
PITCH
DIA.
(IN.)
BORE
(IN.)
DESIG-
NATION
PITCH
LENGTH
(IN.)
QTY.
25 TON
Stan-
dard
975/1165
15 254T 91 1LVP58B70A 7.5
6.2-
7.4
1-5/8
1B5V110 11.3 11.1 1-7/16 5VX860 86.0 1
High
Speed
Access
1140/1365 1B5V94 9.7 9.5 1-7/16 5VX840 84.0 1
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.
MOTOR
SPEED
STATIC RESISTANCE OF RETURN DUCTWORK, IWG
0.20.30.40.50.6
CFM KW CFM KW CFM KW CFM KW CFM KW
HIGH* 5250 0.83 4500 0.85 4200 0.88 3750 0.93 3000 0.99
MEDIUM 4900 0.77 3900 0.79 3500 0.82 2900 0.85 - -
LOW 44000.7237000.7430000.78 - - - -
*
Factory Setting
Power Exhaust motor is a 3/4 HP, PSC type with sleeve bearings, a 48 frame and inherent protection.
7500 8750 10000 11250 12500
ESP ESP ESP ESP ESP
IWG
IWG
IWG
IWG
IWG
DEDUCTIONS: (SUBTRACT VALUES BELOW FROM UNIT'S AVAILABLE ESP)
ALLOWANCE FOR WET COIL: 0.10 0.10 0.10 0.10 0.10
ECONOMIZER
RETURN DUCT
: 0.06 0.09 0.11 0.14 0.18
18kW ELECTRIC HEAT: 0.31 0.43 0.56 0.71 0.87
36kW ELECTRIC HEAT: 0.38 0.52 0.68 0.87 1.07
54kW ELECTRIC HEAT: 0.62 0.84 1.10 1.39 1.72
72kW ELECTRIC HEAT: 0.68 0.93 1.21 1.54 1.90
ADDITIONS: (ADD VALUES BELOW TO UNIT'S AVAILABLE ESP)
HORIZONTAL
SIDE
SUPPLY DUCT: 0.31 0.26 0.27 0.31 0.41
HORIZONTAL
SIDE
RETURN DUCT: 0.05 0.05 0.05 0.05 0.05
AIRFLOW
CFM
DESCRIPTION
TABLE 10
- STATIC RESISTANCES*
BLOWER PULLEY
SPEED TURNS ESP OUTPUT INPUT ESP OUTPUT INPUT ESP OUTPUT INPUT ESP OUTPUT INPUT ESP OUTPUT INPUT
rpm
OPEN:
iw
bhp
kW
iw
bhp
kW
iw
bhp
kW
iw
bhp
kW
iw
bhp
kW
975 6.0 1.2 5.9 4.9 0.5 7.3 6.0 - - - - - - - - -
1005 5.0 1.4 6.2 5.1 0.7 7.7 6.3 - - - - - - - - -
1040 4.0 1.6 6.6 5.4 0.9 8.1 6.7 0.2 9.7 8.0 - - - - - -
1070 3.0 1.8 6.9 5.7 1.1 8.5 7.0 0.4 10.2 8.3 - - - - - -
1100 2.0 2.0 7.3 6.0 1.3 8.9 7.3 0.6 10.6 8.7 - - - - - -
1135 1.0 2.2 7.7 6.3 1.6 9.3 7.6 0.8 11.1 9.1 - - - - - -
1165 0.0 2.4 8.0 6.6 1.8 9.7 8.0 1.0 11.6 9.5 0.2 13.5 11.0 - - -
1140 6.0 2.2 7.7 6.3 1.6 9.4 7.7 0.9 11.2 9.2 - - - - - -
1180 5.0 2.5 8.2 6.7 1.9 9.9 8.1 1.2 11.8 9.7 0.3 13.7 11.2 - - -
1215 4.0 2.7 8.6 7.0 2.1 10.4 8.5 1.4 12.3 10.1 0.6 14.3 11.7 - - -
1255 3.0 3.0 9.1 7.4 2.4 11.0 9.0 1.7 12.9 10.6 0.9 15.0 12.3 - - -
1290 2.0 3.2 9.5 7.8 2.7 11.5 9.4 2.0 13.5 11.1 1.2 15.6 12.8 - - -
1330 1.0 3.5 10.0 8.2 3.0 12.0 9.9 2.3 14.1 11.6 1.5 16.4 13.4 - - -
1365 0.0 3.7 10.5 8.6 3.2 12.6 10.3 2.6 14.7 12.1 1.8 17.0 13.9 - - -
NOTES:
Blower performance is based on coolin
onl
unit, with fixed outdoor air, 2" T/A filters and a dr
evaporator coil.
Refer to pa
e 14 for additional static resistances.
ESP - External Static Pressure available for the suppl
and return air duct s
stem. All internal unit resistances have been deducted from the total static pressure of the
blower.
* FACTORY SETTING
STANDARD DRIVE:
ACCESSORY DRIVE:
7500 CFM 8750 CFM 10000 CFM 11250 CFM 12500 CFM
TABLE 9
- SUPPLY AIR BLOWER PERFORMANCE
DCG300
-BOTTOM DUCT CONNECTIONS(COOLING APPLICATIONS)
530.18-N11Y
14 Unitary Products Group
