LAARS NeoTherm NTV (Sizes 399-850 MBTU/h) - Service Manual - Manual (Page 76)

66 Service Manual - NeoTherm 500
Disassembly Procedure:
1. Turn off power to the machine. Use the main discon-
nect switch on the front of the machine, just above
the control panel.
2. Remove the front panel.
3. Shut off the gas at the gas shutoff valve on the right
side of the machine (yellow handle).
4. On the left end of the gas valve assembly, remove
the four bolts which attach the gas valve assembly
to the blower. See Fig. C5-3. The 5/16” socket will
fit the head of each bolt. Use the 3/8” socket on the
nut on the other end.
5. Behind the gas valve, locate the black rubber air
intake hose. Loosen the hose clamp on the left end
of this hose, and pull the end of the hose away from
the end of the Venturi. Fig. C5-4 shows how the unit
will look when you have finished this step.
Fig. C5-2 - Gas shutoff valve (typical)
Cleaning the Burner and Heat Exchanger (continued)
C5
cont.
Undo these
bolts
Fig. C5-3 - Undo the four bolts at the left end of the
assembly
Fig. C5-4 - Gas and air intakes disconnected