28
17
Gas Conversion Instructions
1.
Remove the burner as described in section 13.3
(a) and (c).
2.
Replace the injectors (2).
3.
Lower the control assembly as follows. Remove the four screws
retaining the control assembly chassis to the main boiler frame
and unhook the chassis. Lower the chassis and re-hook in the
bottom of the large rectangular slots in the main boiler frame.
4.
Replace the solenoid unit on the gas solenoid valve (3).
5.
Remove the regulator head from the gas control valve (A) - see
point 14.4, item 7. Replace the poppet valve head (4) and poppet
valve seat (5). Replace the gasket (6).
6a.
If converting to LPG.
Remove the throttle disc (7) and joint ring (8) and re-fit the burner.
6b.
If converting to Natural Gas.
Fit throttle disc (7) and joint ring (8) and re-fit the burner.
7.
Fix the self adhesive label next to the data plate.
8.
Adjust the gas pressures as described in section 12.4 and in
accordance with the following table.
9.
Turn on the gas service cock and electrical supply.
10.
Confirm for gas soundness
- turn on a hot water tap for maximum hot water output
- check all the gas connection points
11.
Readjust the burner gas pressure for the new gas type
according to the values in table 4. When this is done, seal the
adjusting screw with the wire and lead seal.
12.
Fix the sticker next to the data plate.
13.
Remount support and boiler front case.
NG to LPG kit
LPG to NG kit
Item nº Description
7 710 249 073
7 710 239 062
2
Burner injector
8 708 202 127
8 708 202 124
(marked 120)
(marked 70)
3
Magnetic unit
8 708 504 043
8 708 504 047
4
Poppet valve head
8 708 501 268
8 708 501 269
(marked 3E)
(marked 2E)
5
Poppet valve seat
8 708 500 249
8 708 500 247
6
Gasket
8 701 004 001
8 701 004 001
7
Throttle disc
8 700 100 205
(dia. 6,5 mm)
8
Washer
8 710 103 060
8 710 103 060
IMPORTANT
Switch off the electricity and gas supplies before replacing any components. After the replacement of any components, check for
gas soundness where relevant and carry out functional checks as described in Section 11 - Comissioning.
Fig. 28
A
Table 12
Summary of Contents for 47 311 43
Page 11: ...11 Fig 7 System filling and make up ...
Page 27: ...27 Fig 27 ...
Page 30: ...30 19 Functional Flow Diagrams ...
Page 31: ...31 ...
