Installation | 5
M2050222_en | Installation instructions Lambdamat LM 1500 KOM
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5.6.13 Installing the underpressure controller
The underpressure controller should be fitted to the same side of the boiler as the FGR
blower fan.
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Assemble the double thread nipple (1), reduction union (2) and hose nipple (3).
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Screw the assembled unit onto the side of the combustion chamber from which the
blanking plug was previously removed.
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Fix the underpressure sensor cartridge (4) with two self-tapping screws to the side
panel.
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Thread the hose clamp (5) onto the silicon hose, place on hose nipple (3) and then
tighten.
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Fix the other end of the silicon hose to the "-" nipple of the underpressure sensor
cartridge (4) with the hose clamp (5) and tighten.
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Do not remove the red reduction plug!
5.6.14 Installing the combustion chamber overpressure and temperature sensors
The combustion chamber overpressure monitor and combustion chamber temperature
sensor should be fitted to the left-hand side of the boiler so that it is easily accessible for
maintenance purposes. Two combustion chamber temperature sensors are required for
the Lambdamat 1500.
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Screw in the spacer tube (1).
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Screw the brass bush (2) into the spacer tube (1).
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Push in the combustion chamber overpressure sensor (3) and slightly tighten the
retaining screw.
