Drive Component Manufacturer's Numbers; Cooling Start-Up; Cooling Operation - Lennox KGB024 Installation Instructions Manual

MOTOR PULLEY
Browning No.
Drive No.
A01 1VP34 X 7/8
A02 1VP34 X 7/8
A03 1VP34 X 7/8
A04 1VP40 X 7/8
A05 1VP34 X 7/8
A06 1VP44 X 7/8
A07 1VP50 X 7/8
A08 1VP44 X 7/8
AA01 1VP34 X 7/8
AA02* 1VP40 X 7/8
AA03 1VP40 X 7/8
AA04 1VP44 X 7/8
*Split bushing supplier no.: H1; OEM no. 10073-04

Cooling Start-Up

A-Operation
1- Initiate first and second stage cooling demands
according to instructions provided with thermostat.
See table 6 for operation.
Note - KG/KC 074 units are equipped with two-stage
compressors.
TABLE 6

COOLING OPERATION

T'Stat
Demand
024-072 No Economizer or Outdoor Air Unsuitable
Y1 Compressor
Y2 Compressor
024-072 Unit Equipped With An Economizer
Y1 Economizer
Y2 Economizer + Compressor
074 No Economizer or Outdoor Air Unsuitable
Y1 Compressor Low Speed*
Y2 Compressor High Speed**
074 Unit Equipped With An Economizer
Y1 Economizer
Economizer + Compressor
Y2
Low Speed*
*67% of full capacity **100% of full capacity
KG/KC 024, 030, 036, 048, 060, 072, 074, 090

DRIVE COMPONENT MANUFACTURER'S NUMBERS

OEM Part No. Browning No.
31K6901
31K6901
31K6901
79J0301
31K6901
P-8-1488
53J1501
P-8-1488
31K6901
79J0301
79J0301
P-8-1488
Energized
Condenser Fan
Condenser Fan
na
Condenser Fan
Condenser Fan
Condenser Fan
na
Condenser Fan
TABLE 5
DRIVE COMPONENTS
BLOWER PULLEY
OEM Part No.
AK54 X 1 100244-19
AK49 X 1 100244-18
AK44X 1 100244-16
AK49 X 1 100244-18
AK41 X 1 100244-15
AK51 X 1 18L2201
AK54 X 1 100244-19
AK46 X 1 100244-17
AK69 X 1 37L4701
BK80H 100788-03
AK59 X 1 31K6801
AK59 X 1 31K6801
2- Units contain one refrigerant circuit or stage.
3- Unit is charged with R-410A refrigerant. See unit
rating plate for correct amount of charge.
4- Refer to Refrigerant Charge and Check section for
proper method to check refrigerant charge.
B-Three Phase Scroll Compressor Voltage Phasing
Three phase scroll compressors must be phased
sequentially to ensure correct compressor and blower
rotation and operation. Compressor and blower are wired
in phase at the factory. Power wires are color-coded as
follows: line 1-red, line 2-yellow, line 3-blue.
1- Observe suction and discharge pressures and
blower rotation on unit start-up.
2- Suction pressure must drop, discharge pressure
must rise and blower rotation must match rotation
marking.
If pressure differential is not observed or blower rotation is
not correct:
3- Disconnect all remote electrical power supplies.
4- Reverse any two field-installed wires connected to
the line side of K1 contactor. Do not reverse wires at
blower contactor.
5- Make sure the connections are tight.
Discharge and suction pressures should operate at
their normal start‐up ranges.
Page 42
BELTS
Browning No. OEM Part No.
A40 100245-17
A39 100245-16
A39 100245-16
A41 100245-18
A38 100245-15
A41 100245-18
AX43 73K8201
A40 100245-17
A51 13H0101
A53 P-8-4951
A50 100245-29
A51 13H0101