Checking The Water Chamber For Deposits; Checking The Safety Valve; Checking All Water Connections For Leaks After The Boiler Has Been Filled - Viessmann Vitomax 200-LW M64A Operating And Service Instructions

Further details regarding the individual steps

Checking the water chamber for deposits

1. Fully drain the boiler.
Danger
Heating water escaping under
pressure will injure bystand-
ers.
Only open connections and
inspection ports on the heat-
ing water and flue gas side if
the boiler has been depres-
surised and cooled.
!
Please note
Draining the boiler with a suc-
tion pump will create negative
pressure inside the boiler.
Only drain the boiler with a
suction pump if the air vent
valve is open.
!
Please note
Hot water can cause dam-
age.
Never drain hot water into the
drainage system.
Ensure adequate cooling.

Checking the safety valve

Manufacturer's details
Checking all water connections for leaks after the boiler has
been filled
Replace the gaskets every time a con-
nection has been opened.
1. Clean the sealing face.
Commissioning, inspection, maintenance
(cont.)
2. Clean the water chamber (hose it out)
and remove deposits via the drain. In
case of harder deposits that cannot
be removed by hosing down, carry
out chemical cleaning using an
approved descaling agent.
3. Clean sealing surfaces of the hand-
hole cover and thread of the inspec-
tion port and replace the gaskets.
Seal the thread using hemp.
Retighten new gaskets after commis-
sioning and check again after 24
hours run.
2. Replace the gasket.
3. Retighten all closures after commis-
sioning.
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