LAARS NeoTherm NTV (Sizes 399-850 MBTU/h) - Service Manual - Manual (Page 52)

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Service Manual - NeoTherm 500
Fig. B23-1 - Gas shutoff valve (typical)
The easiest way to remove the blower is to remove it
as part of an assembly, including the air/gas chan-
nel, front panel of the combustion chamber, and the
burner. Once you have done this, you can separate
the burner from the rest of the assembly.
Tools and equipment required:
• Small Phillips-head screwdriver (#1)
• 3/8” and 5/16” sockets
• 4 mm Allen wrench
• #25 Torx® driver
• Flat-blade screwdriver
• Gas leak detection solution (Hercules “Mega-
bubble” or equivalent)
• Replacement gasket for front plate of heat ex-
changer
• Container for removed parts
Procedure:
1. Turn off power to the machine. Use the main dis-
connect switch on the front of the machine, just
above the control panel.
2. Remove the front and right side panels.
3. Shut off the gas at the gas shutoff valve on the
right side of the machine (yellow handle). See
Fig. B23-1.
4. On the left end of the gas valve assembly, re-
move the four bolts which attach the gas valve
assembly to the blower. See Fig. B23-2. The
5/16” socket will fit the head of each bolt. Use
the 3/8” socket on the nut on the other end.
Undo these screws.
Fig. B23-2 - Undo the four screws at the left end of the
assembly
Removing and Replacing the Blower
B23