RE: [VAL] Glyn's Water Heater

["David Tidmore" <dtidmore@xxxxxxx>]

The pilot light does not have a jet, only the main burner.  Dean, you are
correct about reaming out the main jet orifice, but it is made of brass and
therefore rust-proof.  As it has already been established that the main
burner will light, there is nothing wrong with the main burner jet orifice.


On the pilot light, gas is simply passed along the tube to the thermocouple
area and allowed to burn (ie no jet to mix outside air into the gas flow).
There is either an inline flow rate adjustment (small slotted device in
pilot light line) or an equivalent on the main gas valve to set the small
gas flow rate at the pilot.  If cleaning out the pilot line tube does not
work, then the pilot light adjustment valve may need to be opened and closed
a few times as it might have some trash blocking it as presently adjusted.
If you set the flow rate too low, the pilot will go out and inadequately
heat the thermocouple.  If set too high, the pilot light will tend to blow
out and the hot part of the flame may well be beyond the thermocouple
location, again causing inadequate heating of the thermocouple.  The ideal
setting is a small flame that just barely covers the thermocouple tip
(putting the thermocouple at the hottest part of the flame)

david