Lennox LHT180 Installation Instructions Manual page 33

L-UVC Light (Optional)
When field-installed, use only UVC Light Kit assembly
106883-01 (21A94) with this appliance.
Factory-Installed UVC Light
When the UVC light is factory installed, the lamp is
shipped in a foam sleeve. The lamp is attached to the
UVC light assembly on the blower deck. Remove the
lamp and install into the UVC light assembly as shown in
steps 2 through 11 as follows.
Annual Lamp Replacement
WARNING
Personal Burn Hazard.
Personal injury may result from hot lamps. During
replacement, allow lamp to cool for 10 minutes be­
fore removing lamp from fixture.
The lamp should be replaced every 12 months, as UVC
energy production diminishes over time.
1- Obtain the correct
replacement lamp 101087-02.
2- Disconnect power to the rooftop unit before servicing
the UVC kit.
3- Open the blower access door.
4- Disconnect the UVC
(black/white).
5- Remove and retain the (3) mounting screws securing
the UVC assembly. Carefully remove the complete
UVC assembly out through the blower access door.
See figure 29.
model germicidal light
cable quick connects
REMOVE / REPLACE UVC ASSEMBLY
UVC ASSEMBLY
FIGURE 29
6- Allow 10 minutes before touching the lamps. Then,
carefully remove the lamp splash guards (and lamp
for annual replacement) from each of the lamp
holders. See figure 28.
7- Wear cotton gloves or use a cotton cloth when
handling the new lamp. Gently but firmly push in the
splash guards on each end of the lamp. Align and
insert the lamp with splash guard into the lamp
holders of the UVC assembly until each end clicks
into place.
INSTALL LAMP IN UVC ASSEMBLY
Install plastic splash
guards and snap each end
of the lamp into place.
UVC
ASSEMBLY
Page 33
BLACK PLASTIC
LAMP
SPLASH GUARD
FIGURE 28
ASSEMBLY SECURED
WITH 3 SCREWS
508336-01
LAMP
HOLDERS
1/2023