Viessmann Vitocrossal 200 Series Service Instructions Manual page 13

Conversion to LPG P
G F
BCD
A E
Fig. 4
01. Close the gas shut-off valve.
02. Switch off ON/OFF switch at the user interface of
the control unit.
03. Switch OFF the mains isolator (outside the instal-
lation room) or isolate the mains power and
secure against unintentional reconnection.
04. Undo fitting A from the gas supply pipe.
05. Disconnect control cable
06. Release the gas train from flange
07. Remove restrictor
C
08. Insert O-ring , restrictor for LPG
B
cork gasket D .
Note
The bevel and label on the LPG restrictor must
■
point towards the gas train.
For gas restrictor allocation (hole diameter), see
■
specification.
09. Tighten M 5 nuts diagonally.
Torque: 1.5 Nm.
10. Secure fitting
A with a new gasket.
11. Plug control cable
G
12. Check control cables:
Connection and kink-free routing
■
■ Application and seating of retaining clips
(cont.)
from the gas train.
G
E .
with rubber cork gasket
D
and rubber
C
into the gas train.
Commissioning, inspection, maintenance
13. Affix the label "Set to ..."
label.
14. Start the burner.
15. Check for gas tightness.
Danger
Escaping gas leads to a risk of explosion.
Check gas routing components for leaks.
!
Please note
The use of leak detection spray can result in
faulty operation.
Leak detection spray must not come into
contact with electrical contacts.
16. Change gas type on the burner control unit. See
the following chapter.
17. Set gas pressure switch to 20 mbar (2 kPa).
Changing gas type on the burner control unit
Service instructions of the control unit
Status Service
S
Fig. 5
1. Press S and hold for longer than 2 s. " " flashes.
.
2. Press until the display shows "6" under Service.
3. Press S until the display shows "6" under Status.
4. Press until display shows "2" under Status and
the current gas type is shown under Service (0 =
natural gas or 1 = LPG).
5. Use or to select "1" for LPG.
6. Press S to confirm. If applied successfully, "1" will
be shown briefly on the display under Service, or
"0" will appear if it failed.
7. Press S to switch to the operating display.
8. Press R.
The system will be restarted.
F supplied over existing
R
13