Viessmann Vitoladens 300-W Installation And Service Instructions For Contractors page 65

Wall mounted oil condensing boiler for the combustion of fuel oil to din 51603-1 el (low sulphur)
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Testing outputs (relay test)
Display
Solar circ pmp max
SM1 output 22
(cont.)
Explanation
ON
Solar circuit pump output on solar control module SM1 switched to
maximum speed
ON
Output
sS
on solar control module SM1 enabled
Diagnosis and service scans
65

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