4
OPERATING INSTRUCTIONS FOR THE USER
Fig. 1
KEY
A Temperature/pressure gauge
B Receiver time programmer (co e 8092221/23)
C Selector switch summer/winter
D D.H.W. thermostat (it oes not inclu e SYSTEM 25 HE)
E C.H. thermostat
THE GAS SAFETY (INSTALLATION AND USE) REGULATIONS
1996. It is the law that all gas appliances are installe by a
registere person, in accor ance with the above regulations.
Failure to install appliances correctly coul lea to prosecu-
tion. It is in your own interest, an that of safety, to ensure
that the law is complie with.
It is essentia that the app iance is correct y earthed. An
e ectricity supp y of 240 V - 50 Hz fused at 3 A is required.
Rea these instructions carefully before attempting to oper-
ate the appliance.
1.1 INTRODUCTION
The Sime “ECOMFORT PLUS” is a fully automatic, wall mount-
e , room seale , fan assiste combination boiler. When oper-
ating in winter mo e, the appliance provi es central heating
as require an pro uces instantaneous hot water upon
eman .
When operating in summer mo e, the central heating is not
operational however the appliance continues to supply hot
water whenever it is require . The heat output is automati-
cally controlle by the fully mo ulating gas valve (within its pre-
set limits), an there are user a justable potentiometers to
control the temperature of both central heating an omes-
tic hot water. A temperature/pressure gauge is fitte an an
overheat thermostat is incorporate to protect against fault
con itions.
1.2 APPLIANCE OPERATION
A eman of hot water will be sense by the appliance
etecting water flow (provi ing that the flow rate is above 2
l/m - 0.5 gal/min).
The fan will start an the burner will light at full output. If
the raw off rate is near the maximum esign flow rate
the appliance will run continuously at full output until a tap
is either turne off or the flow rate is re uce in which
case the heat output will re uce accor ingly to maintain a
stea y temperature.
Hot water is ma e available almost imme iately at the appli-
ance outlet, but the final temperature an time taken for the
hot water to reach a tap epen s upon the potentiometer
setting, the rate at which water is rawn off, an the length
of the pipe between the boiler an the tap.
When the tap is turne off, the appliance will revert to C.H.
mo e (if set on winter position) otherwise the burner will be
extinguishe pen ing the next eman for hot water.
1.3 OPERATING INSTRUCTIONS
1.3.1 To ight the app iance (see fig. 1)
– Check that the electricity supply is off an that the D.H.W.
isolation valve is in the open position (lever vertical). Check
that the gas supply is on.
– Turn the selector switch summer/winter (C) to SUMMER
(water only) position “ ”.
– Switch on the electricity supply an full open any D.H.W.
tap. The burner will light.
If the burner fails to light, turn the selector switch sum-
mer/winter to “ “ position an release it imme iately;
then turn it to the SUMMER position: the burner shoul
now light. Turn off the tap.
– Check that the room thermostat an time clock are call-
ing for heat. Turn the heating potentiometer (E) to maxi-
mum (fully clockwise).
– Turn the selector switch summer/winter to the WINTER
position “❄" an the burner will light to serve the heating loa .
Set the require temperature for the C.H. an D.H.W. by
