Lambda Probe, Temperature Sensor - Return - eta SH Installation Manual

Lambda probe, temperature sensor - return

Install lambda probe
Unscrew the retaining tube on the rear side of
the boiler and insert the lambda probe into the
retaining tube.
Together with the copper washer and the retaining
tube, screw the lambda probe into the boiler.
Use a pipe wrench to tighten the lambda probe's
retaining tube securely.
Install lambda probe cable
Run the lambda probe's cable along the rear of the
boiler in the right cable duct to the circuit board.
Connect lambda probe cable
Connect the cable to the SH-C circuit board at the
S570 terminal.
Install temperature sensor on return
Run the cable for the temperature sensor through
the cable ducts to the return connection on the
rear side of the boiler.
Screw the front part of the clamp into the immer-
sion sleeve.
Place the cap on the temperature sensor and insert
the sensor into the immersion sleeve as far as it
will go. Then push the cap forward and screw it
onto the clamp.
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Installation
S570