Lennox EL180UHE Series Manual page 27

Remove 5 screws if necessary
(either side of cabinet)
FIGURE 27
C-Supply Air Blower
1 - Check and clean blower wheel.
2 - Motors used on the Lennox EL180UHE(X) series units
are permanently lubricated and need no further lu­
brication.
D-Flue and Chimney
Flue must conform to local codes. In the absence of local
codes, flue must meet the National Fuel Gas Code
ANSI-Z223.1 venting requirements. Flue pipe deteriorates
from the inside out and must be disconnected in order to
check thoroughly. Check flue pipe, chimney and all con­
nections for tightness and to make sure there is no block­
1
age or leaks.
2
E-Electrical
3
1 - Check all wiring for loose connections.
4
2 - Check for the correct voltage at the furnace (furnace
5
3 - Check amp-draw using a true RMS meter on the blow­
Page 27
operating). Correct voltage is 120VAC + 10%
er motor with blower access panel in place. See figure
28.
Furnace Nameplate__________Actual__________
Check Motor AMP Draw
OFF
EX − P
MR
W
3
2
1
kWh
kVAr
V1 V2 COM M
V3
True RMS Meter
FIGURE 28