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Lennox LDT Series - FACTORY INSTALLED OPTIONS; BELT DRIVE KIT SPECIFICATIONS; FIELD INSTALLED ACCESSORY AIR RESISTANCE

Lennox LDT Series
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
BLOWER DATA
FACTORY INSTALLED BELT DRIVE KIT SPECIFICATIONS
Nominal
hp
Maximum
hp
Drive Kit Number RPM Range
3 3.45 1 535 - 725
3 3.45 2 
5 5.75 3 
5 5.75 4 850 - 1045
5 5.75 5 
7.5  850 - 1045
7.5  7 
7.5  8 1045 - 1285
10 11.50 7 
10 11.50 10 1045 - 1285
10 11.50 11 



NOTE – Motor service factor limit - 1.0
FACTORY INSTALLED OPTIONS/FIELD INSTALLED ACCESSORY AIR RESISTANCE
Air
Volume
cfm
Wet Indoor
Coil
Gas Heat Exchanger
Economizer Filters
Horizontal
Roof Curb
Low/
Standard
Heat
Medium
Heat
High
Heat
in. w.g. in. w.g. in. w.g. in. w.g. in. w.g. MERV 8 MERV 13 MERV 16 in. w.g.
2750 .02 .02 .04 .05 - - - .01 .03  .03
3000 .02 .03 .04 .05 - - - .01 .03  .04
3250 .03 .03 .05  - - - .01 .04 .07 .04
3500 .03 .03 .05  - - - .01 .04 .08 .05
3750 .03 .04  .07 - - - .01 .04 .08 .05
4000 .04 .04  .07 - - - .01 .04  
4250 .04 .04  .08 - - - .01 .05 .10 .07
4500 .05 .05 .07  - - - .01 .05 .10 .07
4750 .05 .05 .08 .10 - - - .02 .05 .11 .08
5000 .05 .05  .11 - - - .02  .12 .08
5250   .10 .12 - - - .02  .12 
5500 .07  .10 .13 - - - .02  .13 .10
5750 .07  .11 .14 - - - .02 .07 .14 .11
 .08 .07 .12 .15 - - - .03 .07 .14 .11
 .08 .07 .12  .01 .03 .07 .15 .12
  .08 .13 .17 .02 .03 .08  .13
 .10 .08 .14 .18 .03 .03 .08 .17 .14
7000 .10  .15  .04 .04 .08 .17 .15
7250 .11   .20 .05 .04  .18 
7500 .12 .10 .17 .21  .04   .17
8000 .13 .11  .24  .05 .10 .21 
8500 .15 .12 .20  .11 .05 .10 .22 .21
  .13 .23  .14  .11 .24 .24
 .18 .14 .25 .32  .07 .12 .25 
 .20  .27 .35  .07 .12 .27 
 .22 .17 .30 .38 .22 .08 .13  .31
 .24 .18 .31 .40 .25  .14 .30 .34
BLOWER DATA

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