Lennox LCH036 Installation Instructions Manual page 172

BLOWER DRIVE KITS
CONSTANT AIR VOLUME AND VARIABLE FREQUENCY DRIVE KIT SPECIFICATIONS
Nominal
hp
5
7.5
10
15
20
25
30
NOTE - Using total air volume and system static pressure requirements determine from blower performance tables rpm and motor output required. Maximum usable
output of motors furnished are shown. In Canada, nominal motor hp is also maximum usable motor hp. If motors of comparable output are used, be sure to keep within
the service factor limitations outlined on the motor nameplate.
For Variable Frequency Drive applications, nominal motor output is also maximum usable motor output.
HIGH STATIC POWER EXHAUST FANS - DRIVE KIT SPECIFICATIONS - CAV or VFD
Nominal
hp
per blower
3
5
7.5
In VFD applications, nominal motor output is also maximum usable motor output.
1
2
Two drive kits are required for the same rpm, one for the front blower position and one for the rear blower position because of different belt length requirements.
Adjustable motor pulleys are factory set for maximum RPM in VFD applications.
3
Maximum
hp
5.75
8.63
11.5
17.25
23
28.75
34.5
1 Maximum
RPM Range
hp
3
Adjustable
per blower
735-920
3.45
690-845
795-975
5.75
735-920
850-1065
8.63
820-980
Drive Kit
Number
1
2
3
4
5
4
6
7
8
9
10
11
12
13
13
14
50% Applications
Rear Position
6(A)-B35
5(A)-B35
3(A)-B35
4(A)-B35
1(A)-B35
2(A)-B35
Page 28
RPM Range
(Adjustable Pulley)
510 - 640
630 - 760
635 - 770
750 - 905
670 - 825
750 - 905
880 - 1050
745 - 900
875 - 1045
965 - 1190
825 - 1020
1010 - 1240
930 - 1085
1075 - 1285
1075 - 1285
1150 - 1340
Drive Kit Number
2 100% Applications
Order One Each:
Front Position Rear Position
6(B)-B36
5(B)-B36
3(B)-B36
4(B)-B36
1(B)-B36
2(B)-B36
6(A)-B35
5(A)-B35
3(A)-B35
4(A)-B35
1(A)-B35
2(A)-B35