LAARS NeoTherm NTV (Sizes 150–285 MBTU/h) - Service Manual - Manual (Page 71)

61 Service Manual NeoTherm 80 - NeoTherm 285
8. The gas inlet pipe (black pipe) runs to the underside
of the gas valve. It is attached by four 3mm socket-
head cap screws. The photo below shows the
screws as seen from below the gas valve.
Use a 3mm Allen wrench to undo these screws. It
will be hard to reach the right front screw. The best
tool for this job is a traditional “L-shaped” Allen
wrench, with one long leg and one short leg. You
will be able to use the short leg to undo that one diffi-
cult screw.
Cleaning the Burner and Heat Exchanger (continued)
Fig. C5-6 - Four mounting screws for the gas inlet pipe
(viewed from below)
9. Now you can remove the air-gas channel
and blower assembly from the machine.
Remove the five #25 Torx-head screws
around the air-gas channel. (These are the
outer screws on the front of the assembly.
The inner screws attach the cover - do not
remove these.)
Support the assembly as you remove the
last screws, so it does not fall.
10. Fig. C5-8 shows how the front of the unit
looks at this point.
Fig. C5-7 - Removing the front plate with attached air-gas
channel and blower
Fig. C5-8 - Front plate of heat exchanger with air-gas channel
removed
Front plate of
heat exchanger
Front end of
burner can
10 mm nuts
Ground wire
(green)
Spark wire - mark with
electrical tape
Flame
sense
wire
Remove
these
screws
C5
cont.