2
OPERATING INSTRUCTIONS FOR THE USER
A
B
C
D
E
Fig. 1
KEY
A
Pressure and temperature gauge
B
Time clock
C
Rotary switch
D
C.H. thermostat
E
D.H.W. thermostat
THE GAS SAFETY (INSTALLATION AND USE) REGULATIONS
1996. It is the law that all gas appliances are installed by a
registered person, in accordance with the above regula-
tions.
Failure to install appliances correctly could lead to prosecu-
tion. It is in your own interest, and that of safety, to ensure
that the law is complied with.
It is essential that the appliance is correctly earthed. An
electricity supply of 240 V - 50 Hz fused at 3 A is
required.
Read these instructions carefully before attempting to oper-
ate the appliance.
1.1
INTRODUCTION
The Sime
“PLANET”
family is a fully automatic, wall mounted,
room sealed, fan assisted range of combination boilers.
When operating in winter mode, the appliance provides cen-
tral heating as required and produces instantaneous hot
water upon demand.
When operating in summer mode, the central heating is not
operational however the appliance continues to supply hot
water whenever it is required.
The heat output is automatically controlled by the fully modulat-
ing gas valve (within its pre-set limits), and there are user
adjustable potentiometers to control the temperature of
both central heating and domestic hot water.
A pressure gauge is fitted and an overheat thermostat is
incorporated to protect against fault conditions.
1.2
APPLIANCE OPERATION
A demand of hot water will be sensed by the appliance
detecting water flow (providing that the flow rate is above 2
l/m - 0.5 gal/min).
The fan will start and the burner will light at full output. If
the draw off rate is near the maximum design flow rate the
appliance will run continuously at full output until a tap is
either turned off or the flow rate is reduced in which case
the heat output will reduce accordingly to maintain a
steady temperature.
Hot water is made available almost immediately at the
appliance outlet, but the final temperature and time
taken for the hot water to reach a tap depends upon the
potentiometer setting, the rate at which water is drawn
off, and the length of the pipe between the boiler and the
tap.
When the tap is turned off, the appliance will revert to
C.H. mode (if set on winter position) otherwise the burner
will be extinguished pending the next demand for hot
water.
1.3
OPERATING INSTRUCTIONS
1.3.1
To light the appliance (see fig. 1)
– Check that the electricity supply is off and that the D.H.W.
isolation valve is in the open position (lever vertical). Check
that the gas supply is on.
– Turn the rotary switch (C) to SUMMER (water only) posi-
tion “
”.
– Switch on the electricity supply and full open any D.H.W.
tap. The burner will light.
Check that the burner has lit by looking through the view-
ing window (F). If the burner fails to light, turn the rotary
switch to “
“ position and release it immediately; then
turn it to the SUMMER position: the burner should now
light. Turn off the tap.
– Check that the room thermostat and time clock are call-
ing for heat. Turn the heating potentiometer (D) to maxi-
mum (fully clockwise).
– Turn the rotary switch to the WINTER position “
❄
" and the
burner will light to serve the heating load.
