Information On Maintenance - Viessmann Vitomax HS M73 Operating And Service Instructions

Shutdown and preservation
Shutdown
(cont.)
Recommendation for areas with high relative
humidity
Do not use dry preservation in areas with high relative
humidity (in the tropics, near the sea) due to the spe-
cial installation conditions that prevail in these areas.

Information on maintenance

Correct maintenance ensures trouble-free, efficient
and environmentally responsible system operation:
■ Observe the specified maintenance intervals
■ Only use authorised companies:
– Viessmann Industrial Service (see contact details)
Other authorised contractors
–
Preventing excessive flue gas temperatures
Excessively high flue gas temperatures make the
system less efficient
Cause of fault Remedy
Altered burner Adjust the burner correctly
adjustment
Contaminated Clean the boiler system
boiler system
Tab. 16
18
Detailed information
■ Operating instructions for preservation on the
water and hot gas side
■ Datasheets of the VdTÜV, no. MB TECH
1466, dated 2014-01, and the VGB, no.
R116H, dated 2009
Recommendation
Continuous monitoring of the flue gas temperature
using a flue gas thermometer.