Glow-worm Energy Saver Combi 2 and Gas Valve - Manual (Page 26)

26 221854B
12.5 Condensate Siphon
Place a container beneath the drain cap on the condensate
siphon.
Carefully remove the cap at the base of the condensate drain
trap, see diagram 9.1.
Remove any solids found.
Check for any debris in the outlet pipe of the condensate drain
and clean as necessary.
When refitting the cap ensure that a water tight seal is achieved,
but do not use excessive force.
Ensure that the flexible pipe between the heat exchanger and
siphon is not kinked.
Fill the condensate trap as recommended in section 9.4.
12.6 Combustion Check, see note over
Connect a CO
2
combustion analyser to the test point on the flue
elbow if fitted, or alternatively to the sample point at the base of
the flue outlet pipe inside the boiler casing, see diagram 12.1.
Turn on the gas isolation valve, see diagram 8.1.
Turn on the electricity supply.
The boiler should fire automatically, but if there is no demand for
heat open a hot water tap to create a demand.
Repeatedly press the 'mode' button on the boiler fascia until the
symbol appears.
Press and hold the 'mode' button for greater than one second
until the decimal point is flashing on the display.
The boiler is now locked at minimum input.
Allow the boiler to stabilise for a few minutes and then check the
CO
2
value. See Table 1.
If adjustment proves necessary then proceed as follows.
Any adjustment to the gas valve should only be carried out by
a qualified person. The CO
2
value can only be adjusted at
minimum input.
Remove the protective cap from the Gas Valve. See diagram
11.2.
Turn the adjuster until the correct CO
2
value is attained.
To check the combustion at full rate repeatedly press the mode
button on the boiler fascia until the symbol appears. Press
and hold the mode button until the decimal point on the display
flashes.
The boiler is now locked at maximum input.
The CO
2
level should not be adjusted in maximum input lock
mode, see above for adjustment at minimum input.
If necessary several hot water taps should be turned on to
deliver maximum flow rate to prevent the boiler from shutting
down for overheat protection.
Check the combustion levels of CO and CO
2
.
If the combustion is excessive, see fault finding section 13.4.
Press the Reset button to remove the minimum or maximum
input lock. Replace caps on sample point and gas valve.
12.7 Cold Water Inlet Filter
If the water flow rate through the appliance has reduced it may
be necessary to clean or replace the water inlet filter.
Turn off the electrical supply to the boiler.
Drain the Domestic Hot Water circuit by closing the cold water
isolation valve on the wall mounting jig, see diagram 8.1.
SECURING
PLATE
WING
NUT
Diagram 12.3
9048
Diagram 12.4
6526
Diagram 12.5
6544
FAN
SPARK
PLUG
LEAD
SECURING
PLATE
FAN
FAN INLET
FLANGE
SPARK ELECTRODE
SECURING SCREW
(2 OFF)
12 Servicing