Viessmann Vitomax HS M73 Operating And Service Instructions page 14

Functions
Description of selected components in a steam...
Sample cooler
rZ
Function
Removal of water sam-
ples to carry out compara-
tive tests
Tab. 11
14
Operating information
Measure and document the following values in the operator's log:
pH value
■
Residual hardness
■
p value (value to determine the free alkalinity)
■
m value (value to determine the entire alkalinity)
■
Phosphate
■
Sulphide
■
Measure and document additional values according to the country-specific regula-
tions.
(cont.)