Belt Drive Blower Motor And Drive Data; Static Resistances; Electric Heater Cfm Limitations - York BP 036 Technical Manual

TABLE 18: BELT DRIVE BLOWER MOTOR AND DRIVE DATA
MOTOR
BLOWER
MODEL
RANGE
SIZE
HP FRAME DESIGNATION
(RPM)
036 600/920 1 1/2 56
048 790/1120 1 1/2 56
060 850/1220 1 1/2 56
072 900/1250 1 1/2 56
1. All motors have solid bases and are inherently protected. these motors can be selected to operate into their service factor because they are located
in the moving air, upstream of any heating device.
TABLE 19: STATIC RESISTANCES
DESCRIPTION
1 3
ECONOMIZER
ELECTRIC
7-15KW
1
HEATERS
20-30KW
BOTTOM DUCT CONNECTIONS
2
COOLING ONLY
1. Deduct these resistance values from the available external static pressure shown in SUPPLY AIR BLOWER PERFORMANCE Tables.
2. Add these resistance values to the available static resistance values on SUPPLY AIR BLOWER PERFORMANCE Tables.
3. The pressure through the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return air
duct system is less than 0.25 IWG, the unit will deliver less CFM during full economizer operation.
TABLE 20: ELECTRIC HEATER CFM LIMITATIONS
UNIT MODEL SIZE
NOMINAL TONS
036
(3)
048
(4)
060
(5)
072
(6)
24
INDOOR BLOWER SPECIFICATION
1
ADJUSTABLE MOTOR PULLEY
OUTSIDE PITCH
DIA.
(IN.)
1VL40 2.7-3.7 2.4-3.4
1VL40 2.7-3.7 2.4-3.4
1VL40 2.7-3.7 2.4-3.4
1VL44 3.1-4.1 2.8-3.8
1000 1200 1400
0.07 0.08 0.09
0.04 0.05 0.06
0.06 0.07 0.08
1
0.06 0.07 0.08
0.08 0.10 0.12
VOLTAGE
208/230-1-60
208/230-3-60
460-3-60
575-3-60
208/230-1-60
208/230-3-60
460-3-60
575-3-60
208/230-1-60
208/230-3-60
460-3-60
575-3-60
208/230-1-60
208/230-3-60
460-3-60
575-3-60
FIXED BLOWER PULLEY
OUTSIDE
BORE
DIA. DESIGNATION
(IN.)
(IN.)
5/8 AK74
5/8 AK61
5/8 AK56
7/8 AK56
RESISTANCE, IWG
CFM
1600 1800 2000
0.11 0.13 0.15
0.07 0.08 0.10
0.09 0.11 0.13
0.09 0.10 0.11
0.14 0.16 0.18
MINIMUM SUPPLY AIR CFM
HEATER SIZE NOMINAL KW
5 7
1100 1100
1100 1100
- 1100
- -
1300 1300
1300 1300
- 1300
- -
1600 1600
1600 1600
1600 1600
- 1600
1800 1800
1800 1800
- 1800
- -
255027-YTG-B-0507
BELT (NOTCHED)
PITCH
BORE
DIA. DIA. DESIGNATION
(IN.)
(IN.) (IN.)
7.2 7.0 1 A39
5.9 5.7 1 A36
5.4 5.2 1 A36
5.4 5.2 1 A36
2200 2400 2600
0.17 0.20 0.23
0.12 0.14 0.16
0.15 0.17 0.20
0.12 0.14 0.16
0.20 0.23 0.26
10 15 20
1200 1200 1300
1200 1200 1300
1200 1200 1300
1200 1200 1300
1300 1300 1300
1300 1300 1300
1300 1300 1300
1300 1300 1400
1600 1600 1600
1600 1600 1600
1600 1600 1600
1600 1600 1600
1800 1800 1800
1800 1800 1800
1800 1800 1800
1800 1800 1800
Unitary Products Group
PITCH
LENGTH QTY.
(IN.)
40.3 1
37.3 1
37.3 1
37.3 1
2800 3000
0.26 0.30
0.19 0.22
0.23 0.26
0.19 0.22
0.29 0.32
30
-
-
-
-
-
-
-
-
1600
1600
1600
1800
1800
1800
1800
1800