Conversion To Natural Gas Ll - Viessmann MatriX Service Instructions Manual

Further details regarding the individual steps

Conversion to natural gas LL

F G
E
D
C
B
A
1. Close the gas shut−off valve.
2. Switch OFF the system ON/OFF
switch on the control unit.
3. Switch OFF the mains isolator
(outside the installation room) or
the power supply and prevent
unauthorised reconnection.
4. Release the fitting A.
Initial start−up, inspection and maintenance
5. Remove the compensation
hose G from the gas
combination valve.
6. Release the flange E from the
gas combination valve.
7. Remove the restrictor C with the
rubber cork seal D.
8. Secure the gas combination
valve (without the restrictor C
and without the rubber cork
seal D, but with the O ring B)
to the flange E; in doing so,
replace the factory−fitted screws
M 5 × 16 with M 5 × 12 (see pack).
9. Secure the fitting A.
10. Secure the compensation
hose G to the gas combination
valve.
11. Affix the enclosed label
"Adjusted to ..." F above the
existing label.
12. Start the burner (see page 5).
¨
Danger
Escaping gas leads to a risk of
explosions.
Check all fittings for
soundness.
(cont.)
7