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IMPORTANT: Where Low Flow Taps or Fittings
are intended to be used in the DHW system
connected it is strongly recommended that the
DHW flow rate DOES NOT fall below 2.5 l/min.
This will ensure reliable operation of the DHW
function.
Is the Timer ON and
calling for heat ?
Is the Room Thermostat
(if fitted) set high enough ?
12
1
2
3
4
5
6
7
8
9
10
11
Typical
examples of
external timer
Ensure timer is set for
Central Heating ON (see
any instructions supplied
with timer)
NO
YES
YES
NO
15
10
5
20
25
15
10
5
20
25
Turn Room Thermostat
to maximum setting
(typical example shown)
CH ON
CH OFF
bar
0
1
2
3
4
Is the Central Heating
System Pressure
between 1.0 and 2.5 bar ?
If the reading falls below
1.0 bar repressurise the system
as described in Maintenance
NO
Error Code 118 showing
low pressure.
YES
If you don’t know what you need to do
to get the boiler to light, or need help with
the system and controls, contact your
installer as soon as possible
PN-0000634
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