Blower Motor And Drive Data; Static Resistances; Power Exhaust Performance - York DJ 180 Technical Manual

261660-YTG-C-0707
TABLE 16: BLOWER MOTOR AND DRIVE DATA
BLOWER
MODEL
DRIVE RANGE
SIZE
(RPM)
HP FRAME
Standard 850/1065
15 TON 5
High
965/1190
Static
Standard 870/1025
17.5 &
7.5
High
20 TON
950/1120
Static
Standard 975/1165
25 TON 15
High
1140/1365
Static
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 17: STATIC RESISTANCES
DESCRIPTION
WET INDOOR COIL
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 (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 18: 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.
Unitary Products Group
1
ADJUSTABLE MOTOR PULLEY
MOTOR
OUTSIDE
EFF. DESIG-
(%) NATION
184 T 83 1VP56
213 T 89 1VP68
254 T 91 1VP75X
1
15 TON
4500 6000 7200
0.1 0.1
18 KW 0.3 0.4
36 KW 0.3 0.4
54 KW 0.4 0.5
72 KW 0.4 0.5
0.1 0.1
2
0.1 0.2
STATIC RESISTANCE OF RETURN DUCTWORK, IWG
0.2
kW CFM
0.83 4500
0.77 3900
0.72 3700
FIXED BLOWER PULLEY
PITCH
BORE DESIG-
DIA. DIA.
(IN.) NATION
(IN.) (IN.)
BK90
2
5.35 1-1/8
4.3-5.3
BK80
BK120
2
6.75 1-3/8
5.5-6.5
BK110
1B5V110
2
7.5 1-5/8
6.2-7.4
1B5V94
RESISTANCE, IWG
CFM
17.5 TON
6000 7500 9000
0.1 0.1 0.1 0.1
0.4 0.4 0.4 0.5
0.5 0.4 0.5 0.5
0.5 0.5 0.5 0.6
0.5 0.5 0.5 0.6
0.1 0.1 0.1 0.2
0.3 0.2 0.3 0.5
0.3 0.4
kW CFM
0.85 4200
0.79 3500
0.74 3000
OUTSIDE PITCH
BORE DESIG-
DIA. DIA.
(IN.) NATION
(IN.) (IN.)
8.75 8.4 1
7.75 7.4 1
11.75 11.4 1-3/16
10.75 10.4 1-3/16
11.3 11.1 1-7/16 5VX860
9.7 9.5 1-7/16 5VX840
20 TON
6000 8000 9400 7500
0.1 0.1 0.1 0.1
0.4 0.4 0.5 0.4
0.4 0.5 0.5 0.5
0.5 0.5 0.6 0.5
0.5 0.5 0.6 0.5
0.1 0.1 0.2 0.1
0.2 0.3 0.5 0.3
0.5
kW CFM kW
0.88 3750 0.93
0.82 2900 0.85
0.78 - -
BELT
(NOTCHED)
PITCH
LENGTH QTY.
(IN.)
BX81 82.8 1
BX78 79.8 1
BX83 84.8 1
BX81 82.8 1
86.0 1
84.0 1
25 TON
10000 12500
0.1 0.1
0.5 0.6
0.5 0.6
0.6 0.7
0.6 0.7
0.2 0.3
0.5 0.6
0.6
CFM kW
3000 0.99
- -
- -
23