HomeMatic HmIP-eTRV-C-2 Mounting Instruction And Operating Manual page 46

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Danfoss RAV
The Danfoss valve bodies have elongated notches (1)
around their circumference, which also ensure that the
adapter is properly seated when it snaps on.
During installation, please ensure that the pins in-
side the adapter (2) are lined up with the notches
(1) on the valve. Ensure that a suitable adapter for
the valve is properly clipped on.
The lifter extension (3) must be fitted to the valve pin of
RAV valves prior to installation.
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