Reinstall Turbulators, Clean-Out Covers And Close Combustion Chamber Door; Check Proper Operation Of Safety Header; Check Proper Operation Of Expansion Tank, Low Water Cut-Offs And Pumps - Viessmann VITOROND 200 Service Instructions Manual

Vitorond 200, VD2 Series 320 to 1080 Service

Reinstall Turbulators, Clean-out Covers and Close Combustion Chamber Door

Check Proper Operation of Safety Header

Check Proper Operation of Expansion Tank, Low Water Cut-offs and Pumps

Inspection and Maintenance
1. On models VD2-320 to VD2-860 only:
Completely insert turbulators A into the third flue
gas passageway. In doing so, push first turbulator
element approximately two thirds of the way into the
flue gas passageway, hook in the second and third
element and push in.
2. Tighten bolts B of combustion chamber door in a
cross-wise fashion.
When using a gas power burner:
Connect gas train and perform necessary leak
detection tests.
3. Install clean-out opening covers C.
Check pressure gage, air vent and pressure relief valve.
Ensure pressure relief valve does not leak. Also ensure
pressure relief valve operates in accordance with
information provided by the manufacturer.
Ensure proper system water pressure in diaphragm
expansion tanks, low water cut-offs, pumps, and pressure
relief valve.
Note:  O bserve the instructions by the expansion tank
manufacturer. Perform all tests on a cold system.
Flush float water type low water cut-offs (if used).
The usual water fill pressure is between 12 and 15 psig
with the system cold. A lower pressure gage reading
usually indicates loss of water due to leakage. All leaks
must be corrected.
Note:  R efer to instructions packaged with automatic
fill valve. Follow local regulations with respect
to backflow preventers.
If oil-lubricated pumps are used, ensure proper lubrication.
If motorized zone valves are used, refer to maintenance
instructions provided with zone valves.
If an older non-diaphragm expansion tank is used, ensure
the correct water level is present (approx. h full).
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