Condensate Drain; Frost Protection; Boiler Controls - IDEAL icos system HE15 User Manual

Control of water temperature
The boiler controls the central heating radiator temperature to a
o
maximum of 82 C, adjustable via the thermostat knob (F).
Approx. flow temperatures for the boiler thermostat settings are:
Knob Setting
Minimum
Maximum
To shut down the boiler
1. For short periods
Set the mains ON/OFF switch (A) to OFF
2. For longer periods
Set the mains ON/OFF switch (A) to OFF, and switch the
electricity supply to OFF.
For longer periods the entire system should be drained.
To relight the boiler
Repeat the procedure detailed in 'To light the boiler'.

Frost protection

If no frost protection is provided and frost is likely during a short
absence from home, leave the heating controls (if fitted) at a
reduced temperature setting. For longer periods, the entire
system should be drained.
If the system includes a frost thermostat then, during cold
weather, the boiler should be turned OFF at the time switch (if
fitted) ONLY. The mains supply should be left switched ON, with
the boiler thermostat left in the normal running position.
Boiler overheat thermostat
This thermostat will shut down the boiler in the event of
overheating. Should this occur a fault code
Press the reset button (D) and the boiler will re-light.
If the fault re-occurs, turn off the boiler and consult a CORGI
registered installer or in IE a competent person.
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BOILER CONTROLS

LEGEND
A Boiler ON/OFF switch
C Display
D Reset button
E LED
F CH thermostat knob
G Condensate drain
H Pressure gauge
CAUTION. To avoid the possibility of injury during the installation, servicing or cleaning
of this appliance care should be taken when handling edges of sheet steel components.
icos system -
User's
Flow Temperature
o C o F
30 86
82 180
will be displayed.
L A
Flame failure
Should this occur a fault code L-F will be displayed. Press the
reset button and the boiler will relight. If the fault recurs, turn off
the boiler and consult a CORGI registered installer or in IE a
competent person.
Loss of system water pressure
The gauge (H) indicates the central heating system pressure. If
the pressure is seen to fall below the original installation
pressure of 1-2 bar over a period of time then a water leak may
be indicated. In this event conduct the re-pressurising procedure
(see Trouble shooting problem 4). If unable to do so or if the
pressure continues to drop a CORGI registered installer or in IE
a competent person should be consulted.
DO NOT FIRE THE BOILER IF THE PRESSURE HAS
REDUCED TO ZERO FROM THE ORIGINAL SETTING.

Condensate Drain

The condensate drain (G) must not be modified or blocked.
Blockage of the condensate drain, caused by debris or freezing,
can cause automatic shutdown of the boiler.
If freezing is suspected and the pipe run is accessible an
attempt may be made to free the obstruction by pouring hot
water over the exposed pipe and clearing any blockage from the
end of the pipe. If this fails to remedy the problem the
assistance of a CORGI registered installer or in IE a competent
person should be sought.
Escape of gas
Should a gas leak or fault be suspected contact your local gas
supplier without delay.
Do NOT search for gas leaks with a naked flame.
C l e a n i n g
For normal cleaning simply dust with a dry cloth.
To remove stubborn marks and stains, wipe with a damp cloth
and finish off with a dry cloth.
DO NOT use abrasive cleaning materials.
Maintenance
The appliance should be serviced at least once a year by a
CORGI registered installer or in IE a competent person.
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