Lennox EL195UHNE Series Manual page 42

Production
Single-Stage
Orifice Size (Part No)
-040 0.800 (16)
-060 0.995 (14)
-080 1.105 (12)
-100 1.250 (06)
Operating Signal Pressure Measurement
FIGURE 56
TABLE 19
Resonance (more air)
Orifice Size
0.812 (01)
1.010 (21)
1.125 (03)
1.281 (19)
Page 42
Difficulty Igniting (less air)
Cat No Orifice Size
21U23 0.787 (20)
21U02 0.980 (13)
19X31 1.085 (22)
19X39 1.219 (04)
Cat No
21U01
21U25
21U03
19X32