A.O. Smith ADMR-40, Installation, User And Service Manual

Page: 40 / 98

Conversion to a different gas category
40 Instruction manual ADMR
4
is
4.1 Conversion to
different category
ADMR 40 through
115 1. Isolate the appliance from the power supply (10.3 "Electrically isolating the
appliance") .
2. Shut off the gas supply.
Caution
The burner can be hot.
3. Unscrew the cover plate (1) from the burner support.
4. Use a suitable tool to remove the retaining strips (2). Note that the retaining
strips have very sharp edges. Withdraw the retaining strips straight upwards.
Note
The radiation shield / condensation tray can be temporarily loosened to
simplify disassembly of the burner.
5. Remove the burners one by one from their brackets at the front. To do this,
you first move them away from you and then downwards. The orifices will
now be accessible
6. Remove the orifices.
7. Select and fit the correct orifices from the conversion kit, based on the gas
data table (3.4.3 "Gas data") . The orifice diameter is stamped on the orifice
itself, see (3).
8. Re-fit the burners back in their original position.
9. Re-fit the retaining strips.
10. If the radiation shield / condensation tray was loosened, re-fasten it.
Conversion of gas control
Legend
Only applicable numbers are
mentioned.
1. burner pressure regulator
4. gas control connector
5. blank plate
6. supply pressure test nipple
7. gas control
1
4
5
6
7
IMD-0131 R1