A.O. Smith 28 30 50 60, Installation & Service Manual

Page: 37 / 96

Conversion to a different gas category
Release R.1.3 UK 37
is
n
Remark
In the event the supply pressure for a gas category is the same as the burner
pressure (see the gas tables in paragraph
3.4 ) then the gas control must be
fitted with a flat sealing plate with cork gasket. A burner pressure that
deviates in comparison to the supply pressure requires the use of a burner
pressure regulator with rubber gasket. Each conversion kit contains all the
necessary components.
12. If the flat sealing plate or burner pressure regulator need to be replaced:
- Unscrew the connector j from the gas control.
- If necessary, remove the flat sealing plate
!
or burner pressure
regulator
7
.
- If necessary, fit the flat sealing plate or burner pressure regulator
supplied with the conversion kit.
- Refit the connector to the gas control.
13. Refit the connector
1
of the glow igniter and ionisation rod to the controller.
14. Re-fit the three-part gas coupling b .
c
Note
15. Check the burner and supply pressure (see paragraph 3.11 ).
16. Replace the plastic cover.
17. Remove the sticker showing the new gas category from the conversion kit,
and attach it below the appliance’s rating plate. This clearly indicates that the
appliance may no longer be run on the gas for which it was originally
supplied.
18. Start the appliance (see paragraph 7.2 ).
Legend
g burner pressure regulator
h burner pressure control cap
i burner pressure control
adjusting screw
j
connector
k flat sealing plate
l
supply pressure test nipple
M burner pressure test nipple
Figure 3.13 Conversion of gas control
k
g
j
l
m
h
i
IMD-0079