Morco FEB-24ED - Page 45

Description of functioning
technical
49
8
BOILER MAKES NOISE
IN
YES
OUT
What kind of
noise?
Check th
m
Has the boiler
an
air restrictor ring
fitted?
Sound of water in the
heating insta
llation
Set the pump
to no.
2 speed
Check the heating circuit
pressure, check by-pass
and check the pump
works in 3rd position
Sound of boiling water
in the heat exchanger
Sound of water in the
DHW instal
lation
T
filling tap of the
in
Fit air restrictor
in tha air intake, if
is necesary
NO
GAS
WATER
Check the
minimum
burner pressure
Reduce the cold water
mains pressure
43