Rheem Gas Heavy Duty Water Heater Models 265 Litre and 275 Litre - Manual (Page 41)

LIGHTING THE WATER HEATER
41
• The burner flame should be blue, with a clearly defined inner cone -
luminous yellow or “floating” flames are not acceptable and must be
corrected by opening the interrupter screw (refer to
“Air Adjustment” on
page 41).
• Check the test point pressure and compare with the rating label. Adjust if
necessary.
• If unable to get the water heater working properly, contact your nearest
Rheem Service Department or Accredited Service Agent to arrange for an
inspection.
• When satisfied everything is working properly instruct the user in the correct
method of operation.
• Removal of the front cover on the 631 275 model whilst burner is operating
will lead to re-ignition lockout (refer to
“Diagnostic Features of Hot Surface
Ignition Control” on page 40).
BURNER PRESSURE ADJUSTMENT
• Switch off the electrical supply at the isolating switch.
• Attach a manometer to the test spigot at side of gas control.
• Switch on the electrical supply at the isolating switch.
• Check the gas pressure (refer to data plate).
• If necessary adjust the regulator under the cap on top of the gas control.
AIR ADJUSTMENT
The normal setting is to have the interrupter screw clear of the burner throat for
Natural and LP gases. For some Town and TLP gases, the screw may need to
be closed slightly to prevent flame lift-off or burning back inside burner tube.