Technical data

19. Conversion Instructions
55
These instructions describe the conversion of the appliance.
Conversion Kit:
Natural Gas to LPG 7 716 192 304
LPG to Natural Gas 7 716 192 305
Component Qty Part Numbers
NG to LPG LPG to NG
Burner 1 8 716 142 608
Burner Injector 1 8 716 156 338 8 716 156 337
Pilot Burner Injector 1 8 716 148 153 8 716 156 300
PCB Link 1 8 716 104 555
Fan Restrictor Assembly 1 8 716 120 706
CONVERSION: NATURAL GAS TO LPG
SHUT OFF GAS AND ELECTRIC SUPPLIES TO THE APPLIANCE
1. Remove the burner as described in Section 15.2.5 and dis-
card.
2. Remove the main burner injector as described in Section
15.2.6. and discard.
3. Remove the pilot injector as described in Section 15.2.8. and
discard.
4. Remove the fan assembly as described in Section 15.3.2.
Release the venturi and re-assemble incorporating the fan
restrictor assembly. Join the restrictor to the adjacent venturi
connectoin (
+Ve) using the short length of silicone tube sup-
plied. Refer to Fig. 55.
5. Refit the fan assembly and re-connect the sensing tubes. Note:
+
tube to the restrictor inlet. Clear tube to the Ve side of the venturi.
Refer to Fig. 55
6. Re-assemble the appliance using the new injectors and the
new burner.
7. Remove the facia and fit the link to the terminals marked LPG
on the control board. Refer to Fig. 54.
8. Re-commission the appliance as described in Section 13 and
reset the burner pressures. Refer to Table 1. and Fig. 33.
IMPORTANT: Set the maximum burner pressure before the mini-
mum burner pressure. The minimum burner pressure to be used
is that for the hot water.
9. Fix the appropriate labels and re-position the red arrow on the
data plate to indicate the gas type.
10. Up-date the Benchmark log book.
CONVERSION: LPG TO NATURAL GAS
SHUT OFF GAS AND ELECTRIC SUPPLIES TO THE APPLIANCE
1. Remove the burner as described in Section 15.2.5. Remove
the end-cap and withdraw the gauze tube. Replace and refix the
end-cap.
2. Remove the main burner injector as described in Section
15.2.6. and discard.
3. Remove the pilot injector as described in Section 15.2.8. and
discard.
4. Remove the fan assembly as described in Section 15.3.2.
Remove the fan restrictor assembly (see Fig. 55) and refix the
venturi.
5. Refit the fan assembly and re-connect the sensing tubes.
Note:
+ tube to the +Ve side of the venturi. Clear tube to the
Ve side of the venturi.
6. Re-assemble the appliance using the new injectors and the
new burner.
7. Remove the facia and remove the link from the terminals
marked LPG on the control board. Refer to Fig. 54.
8. Re-commission the appliance as described in Section 13 and
reset the burner pressures. Refer to Table 1. and Fig. 33.
IMPORTANT: Set the maximum burner pressure before the mini-
mum burner pressure. The minimum burner pressure to be used
is that for the hot water.
9. Fix the appropriate labels and re-position the red arrow on the
data plate to indicate the gas type.
10. Fill in the Benchmark checklist.
Fig. 55 Fan Restrictor Assembly
+Connection
Silicone tube
Connection
Venturi fixing screws