2
OPERATING INSTRUCTIONS FOR THE USER
Fig. 1
KEY
A
Clock override switch
B
Summer/Winter switch
C
C.H. thermostat
D
D.H.W. thermostat
E
Time clock
F
Pressure gauge
G
Temperature gauge
H
Overheat thermostat reset button
I
D.H.W. inlet valve
J
Gas service cock
K
Viewing window
THE GAS SAFETY (INSTALLATION AND USE) REGULATIONS
1994. It is the law that all gas appliances are installed by a
competent person, in accordance with the above regula-
tions. Failure to install appliances correctly could lead to pro-
secution. 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 ope-
rate the appliance.
1.1
INTRODUCTION
The Sime
“SUPER”
family is a fully automatic, wall moun-
ted, room sealed, fan assisted range of combination boilers.
When operating in winter mode, the appliance provides
central 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
modulating gas valve (within its pre-set limits), and there are
user adjustable thermostats to control the temperature of
both central heating and domestic hot water.
Temperature and pressure gauges are fitted and an overheat
thermostat is incorporated to protect against fault condi-
tions.
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
2.8 l/m - 0.62 gal/min).
The fan will start and the pilot will light, immediately fol-
lowed by the main burner 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
thermostat 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
and pilot 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 (I) is in the open position (lever
vertical). Check that the gas supply is on.
– Turn the Summer/Winter switch (B) to SUMMER (water
only) position “
”.
– 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 viewing window (K). If the
burner fails to light, press the overheat thermostat reset
button (H) once and the burner should now light. Turn
off the tap.
– Check that the room thermostat (if fitted) is calling for
heat and turn the clock override switch (A) to the ON
position “
●
”. Turn the heating thermostat (C) to maxi-
mum (fully clockwise).
– Turn the Summer/Winter switch to the WINTER position
“
❄
" and the burner will light to serve the heating load.
– Turn the clock override switch to the clock position “
¹
”
and set the clock (as described in section 1.6.4) to the
required settings.
Set the Summer/Winter switch (and the room thermo-
stat if fitted), to the desired position and set the requi-
red temperature for the C.H. and D.H.W. by rotating the
thermostats (C - D) clockwise to increase or anticlockwi-
se to decrease the temperature.
