3
the burner will light to serve the heating load.
Set the required temperature for the C.H. and D.H.W. by
rotating the potentiometers (D - E) clockwise to increase
or anticlockwise to decrease the temperature.
NOTE: when operating in winter mode, priority is automati-
cally given to providing hot water when the demand arises.
1.3.2 To turn the appliance off (see fig. 1)
–
For short periods:
Set the rotary switch (C) to OFF position. When required
restore the switch to the SUMMER or WINTER position
and turn on the D.H.W. isolation valve.
–
For longer periods:
Set the rotary switch (C) to OFF position and isolate the
gas service cock.
When required restore the switch to the WINTER or
SUMMER position and turn on the D.H.W. isolation valve.
Do not isolate the mains electricity or gas supply if frost
stat is fitted and frost protection is required.
NOTE: when gas and electrical supplies must be turned
off, the entire system should be drained, including the
domestic water system.
1.4
MINIMUM CLEARANCES
The following MINIMUM CLEARANCES must be available for
servicing the appliance:
1.5
ROUTINE SERVICING
To ensure continued efficient operation of the appliance, it is
recommended that it is checked and serviced as necessary
at regular intervals.
The frequency of servicing will depend upon the particular
installation conditions and usage but in general once a year
should be adequate. It is the law that any service work must
be carried out by a registerd person (C.O.R.G.I.).
1.6
GENERAL INFORMATION
1.6.1
Appliance overheat thermostat
The appliance is fitted with a safety cut-out thermostat. In
the event of overheating this will interrupt the power supply
and prevent the appliance from functioning.
If this occurs, allow the appliance to cool, turn the rotary
switch to “
“ position and release it immediately, then turn
it back to the previous position.
If the cut-out condition is repeated, turn off the electrical sup-
ply and consult your installer or service engineer.
1.6.2 Pressure gauge
The gauge (A fig. 1) on the facia panel indicates the approxi-
mate system pressure. If the normal running pressure is
seen to decrease over a period of time there is a water leak
and you should consult your installer or service engineer.
1.6.3 Electrical supply
The mains plug used must be a 3 pin type to BS1363, and
fused at 3 A. THIS APPLIANCE MUST BE EARTHED.
NOTE: an interruption in the electricity supply whilst the
burner is alight may cause the overheat thermostat to
operate. If this is suspected, turn the rotary switch to “
“ position and release it immediately, then turn it back to
the previous position.
TO CONNECT A PLUG
As the colour of wires in the mains lead of this appliance may
not correspond with the coloured markings identifying the
terminals in your plug, proceed as follows:
the wire which is coloured green and yellow must be con-
nected to the terminal in the plug which is marked with the
letter E or by the earth symbol - or coloured green and yel-
low; the wire which is coloured blue must be connected to
the terminal marked with the letter N or coloured black; the
wire which is coloured brown must be connected to the ter-
minal marked with the letter L or coloured red.
1.6.4 Setting the heating programmer
To set the heating timeswitch proceed as follows:
– the heating timeswitch is surrounded by 96 teeth, when
pushed in, each one switches on the boiler for 15 minutes;
– push down the teeth corresponding to the HEATING ON
requirements;
– set the clock to the correct time by rotating the dial clock-
wise until the arrow corresponds to the current time;
1.6.5 Ventilation
If the appliance is installed in a cabinet, the latter MUST NOT
be used for storage purposes.
Any ventilation provided for the appliance during installation
MUST NOT be blocked and a periodic check must be made
to ensure that the vents are free from obstructions.
1.6.6 Cleaning
Use only a damp cloth and mild detergent to clean the appli-
ance outer casing. DO NOT use abrasive cleaners.
1.7
SAFETY
It is essential that the instructions in this booklet are strict-
ly followed for the safe and economical operation of this
appliance. The appliance functions as a fan assisted bal-
mm
in
ABOVE THE APPLIANCE CASING
200
8
AT THE R.H.S.
90
3 1/2
AT THE L.H.S.
5
1/4
BELOW THE APPLIANCE CASING
200
8
IN FRONT OF THE APPLIANCE
450
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