Cooling Start-Up - Lennox LGH092H Installation Instructions Manual

ADJUSTABLE SHEAVE
DRIVE NO.
BROWNING NO.
1 1VP34x7/8
2 1VP40x7/8
3 1VP34x7/8
4 1VP44x7/8
5 1VP50x7/8
6 1VP50x7/8
7 1VP44x1-1/8
8 1VP50x1-1/8
9 1VP50x1-1/8
1VP50x1-1/8
10
1VP50x1-1/8
11
1VP50x1-1/8
12
ADJUSTABLE SHEAVE
DRIVE NO.
BROWNING NO.
1T 1VP44X7/8
2T 1VP50X7/8
3T 1VP56X7/8
4T 1VP44X7/8
5T 1VP56X7/8
6T 1VP50X7/8
7T 1VP44X1­1/8
8T 1VP56X1­1/8
9T 1VP50X1­1/8
10T 1VP50X1­1/8
11T 1VP50X1­1/8
12T 1VP50X1­1/8

Cooling Start-Up

IMPORTANT-The crankcase heater must be energized
for 24 hours before attempting to start compressor. Set
thermostat so there is no demand to prevent
compressors from cycling. Apply power to unit.
A-Preliminary Checks
1- Make sure that unit is installed in accordance with the
installation instructions and applicable codes.
2- Inspect all electrical wiring, both field‐ and
factory‐installed, for loose connections. Tighten as
required.
3- Check to ensure that refrigerant lines do not rub against
the cabinet or against other refrigerant lines.
TABLE 4
MANUFACTURER'S NUMBERS - NO TENSIONER
OEM PART NO. BROWNING NO.
31K6901
79J0301
31K6901
53J9601
P-8-2187
P-8-2187
36C0701
P-8-1977
P-8-1977
P-8-1977
P-8-1977
P-8-1977
TABLE 5
MANUFACTURER'S NUMBERS - WITH TENSIONER
OEM PART NO. BROWNING NO
P­8­1488 BK95X1
P­8­2187 BK90X1
P­8­1494 BK85X1
P­8­1488 BK77X1
P­8­1494 BK85X1
P­8­2187 BK67X1
100239­07 BK77X1
P­8­1492 BK85X1
P­8­1977 BK67X1
P­8­1977 BK77X1
P­8­1977 BK67X1
P­8­1977 BK62X1
Page 22
DRIVE COMPONENTS
FIXED SHEAVE
OEM PART NO.
AK61x1 100244-20
AK59x1 31K6801
AK46x1 100244-17
AK74x1 100244-21
AK69x1 37L4701
AK64x1 12L2501
AK74x1 100244-21
AK69x1 37L4701
AK64x1 12L2501
BK77x1 49K4001
BK67x1 100244-24
BK62x1 100244-23
DRIVE COMPONENTS
FIXED SHEAVE
OEM PART NO.
79J2701
P­8­9659
49K4101
49K4001
49K4101
100244­24
49K4001
49K4101
100244­24
49K4001
100244­24
100244­23
4- Check voltage at disconnect switch. Voltage must be
within range listed on nameplate. If not, consult
power company and have voltage condition
corrected before starting unit.
5- Make sure filters are in place before start‐up.
B-Start-Up
Supply Air Inverter Units - Refer to the Belt Drive
Supply Air Inverter Start-Up or Direct Drive Variable
Blower section.
1- Initiate first and second stage cooling demands
according to instructions provided with thermostat.
2- First-stage thermostat
compressor 1. Second-stage thermostat demand will
energize compressor 2. On units with an economizer,
when outdoor air is acceptable, a first-stage demand
BELT
BROWNING NO. OEM PART NO.
AX54 100245-25
AX55 100245-26
AX52 100245-33
AX58 100245-34
AX58 100245-34
AX57 100245-28
AX58 100245-34
AX58 100245-34
AX57 100245-28
BX59 59A5001
BX57 78L5301
BX56 100245-11
BELT
BROWNING NO. OEM PART NO.
BX68 88K3401
BX68 88K3401
BX69 100245­51
BK66 88K3301
BX69 100245­51
BX65 100245­08
BX68 88K3401
BX70 31K9601
BX66 88K3301
BX68 88K3401
BX66 88K3301
BX66 88K3301
demand will energize