Sime ECOMFORT PLUS 25 HE User manual

ECOMFORT
PLUS
User instructions
GB
PLEASE LEAVE THIS INSTRUCTION
WITH THE USER

All descriptions and illustrations provided in this manual have been carefully prepared but we reserve the right to make changes
and improvements in our products that may affect the accuracy of the information contained in this manual.

The Benchmark Scheme
Sime Ltd is a licensed member of the Benchmark Scheme which aims to improve the standards of installation and
commissioning of domestic heating and hot water systems in the UK and to encourage regular servicing to optimi-
se safety, efficiency and performance.
Benchmark is managed and promoted by the Heating and Hotwater Industry Council.
For more information visit www.centralheating.co.uk
Please ensure that the installer has fully completed the Benchmark Checklist in the use and maintenance section
of the installation instructions supplied with the product and that you have signed it to say that you have received a
full and clear explanation of its operation.
The installer is legally required to complete a commissioning checklist as a means of complyng with the appropria-
te Building Regulations (England and Wales).
All installations must be notified to Local Area Building Control either directly or through a Competent Persons
Scheme.
A Building Regulations Compliance Certificate will then be issued to the customer who should, on receipt, write the
Notification Number on the Benchmark Checklist.
This product should be serviced regularly to optimise its safety, efficiency and performance.
The service engineer should complete the relevant Service Record on the Benchmark Checklist after each service.
The Benchmark Checklist may be required in the event of any warranty work and as supporting documentation
relating to home improvements in the optional documents section of the Home Information Pack.

OPERATING INSTRUCTIONS FOR THE USER
1.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 APPLIANCE OPERATION
1.3 OPERATING INSTRUCTIONS
1.4 MINIMUM CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.5 ROUTINE SERVICING
1.6 GENERAL INFORMATION
1.7 SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
MECHANICAL TIME CLOCK - Code 8092213 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
DIGITAL TIME CLOCK - Code 8092214 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
ANALOGIC RF TIME PROGRAMMER - Code 8092221 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
DIGITAL RF TIME PROGRAMMER - Code 8092223 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
These appliances comply with the S.E.D.B.U.K. scheme, band “A”
CONTENTS
VERY IMPORTANT!
PLEASE MAKE SURE YOUR BENCHMARK CHECKLIST IN THE
INSTALLATION GUIDE, IS FILLED IN CORRECTLY.
ALL GAS SAFE REGISTER INSTALLERS CARRY A ID CARD.
THE REGISTRATION NUMBER SHOULD BE
RECORDED ON THE CHECK LIST.
YOU CAN CHECK YOUR INSTALLER IS GAS SAFE
REGISTERED BY CALLING ON 0800 408 5577

6
OPERATING INSTRUCTIONS FOR THE USER
Fig. 1
KEY
A Temperature/pressure gauge
B Receiver time programmer (code 8092221/23)
C Selector switch summer/winter
D D.H.W. thermostat (it does not include SYSTEM 25 HE)
E C.H. 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 regulations.
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 “ECOMFORT PLUS” is a fully automatic, wall mount-
ed, room sealed, fan assisted combination boiler. When oper-
ating 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 automati-
cally controlled by the fully modulating gas valve (within its pre-
set limits), and there are user adjustable potentiometers to
control the temperature of both central heating and domes-
tic hot water. A temperature/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 appli-
ance 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 selector switch summer/winter (C) to SUMMER
(water only) position “ ”.
– Switch on the electricity supply and 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 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 (E) to maxi-
mum (fully clockwise).
– Turn the selector switch summer/winter to the WINTER
position “❄" and 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 auto-
A EC
F
B D
DHW
ISOLATION VALVE

matically given to providing hot water when the demand
arises.
1.3.2 To turn off the appliance (see fig. 1)
–For short periods:
Set the selector switch (C) to the OFF position and urn off
the DHW Isolation valve. When required, restore turn the
selector switch to either the SUMMER or WINTER posi-
tion and turn on the DHW Isolation valve.
–For longer periods:
Set the selector switch (C) to the OFF position, turn off
the DHW Isolation valve, turn off the gas isolation cock.
When required, manually rotate the pump, open the gas
isolation cock, turn on the DHW Isolation valve and turn
the selector switch to either the SUMMER or WINTER
position.
NOTE: If frost protection is required-turn the selector
switch to the summer position, do notisolate the gas
supply, turn off the DHW Isolation valve.
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 rec-
ommended that it is checked and serviced as necessary at reg-
ular 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 Gas Safe Register registered engineer.
1.6 GENERAL INFORMATION
1.6.1 Fault finding indicators (LEDS)
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 selector switch sum-
mer/winter to “ “ position, then turn it back to the previous
position (see fig. 2). If the cut-out condition is repeated, turn
off the electrical supply and consult your installer or service
engineer.
1.6.2 Temperature/pressure gauge
The gauge (A fig. 1) on the facia panel indicates the approxi-
mate system pressure. The normal operating pressure is
between 1 and 1.5 bar. The pressure is maintained with the
use of an external filling loop, fitted at the time of installation.
This is usually close to the boiler. To increase the pressure,
firstly connect the flexable hose, then turn on the isolation
valve until the pressure is between 1 and 1.5 bar. Turn off the
valve and disconnect the hose. If the normal running pres-
sure is seen to decrease over a short period of time there is
For ventilation For servicing
ABOVE THE APPLIANCE CASING 400 mm 300 mm
AT THE R.H.S. 15 m m 15 m m
AT THE L.H.S. 15 m m 15 m m
BELOW THE APPLIANCE CASING 200 mm 200 mm
IN FRONT OF THE APPLIANCE 100 mm 500 mm
Fig. 2
Bi-colour green led off if power is cut-off.
Bi-colour orange led: C.H. sensor (SM) fault.
Green led flashing: fan/smoke pressure switch.
F lashing orange led no water circulation.
Flashing red led indicates a problem in the line post-condenser.
Red led on, ignition blocked/safety stat/smoke stat tripped:
turn the rotary switch in the position ( ) to restore functioning
7

Setting the time
The time of day can be set by grasping
the outer edge of the black dial and
turning it in a clockwise direction until
the correct time is in line with the white
pointer.
Setting the “switching time”
The “ON” periods are set by sliding the
blue tappets, adjacent to the time peri-
ods required, to the outer edge of the
dial.
The tappets that remain at the centre
of the dial will be the “OFF” periods.
N.B.: The smallest switching time (ON
or OFF) is 15 minutes.
– To select “Timed” mode move the
selector switch in the middle of the
clock face to the “”position.
– To select “Constant” mode move
the selector switch in the middle of
the clock face to the “I” position.
– To select “OFF” mode move the
selector switch in the middle of the
clock face to the “O” position.
MECHANICAL TIME CLOCK - Code 8092213
Slide blue tappets
OUT for ONperiod
Slide blue tappets IN for OFF period
Mode selector switch
8
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, 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 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.
1.6.5 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 balanced flue
unit.
The flue terminal MUST NOT BE OBSTRUCTED under any cir-
cumstances. If damaged, turn off the appliance and consult
the installer, service engineer, or gas supplier. If it is known or
suspected that a fault exists on the appliance it MUST NOT
be used until the fault has been rectified by a competent per-
son.
WARNING: IF A GAS LEAK IS SUSPECTED OR EXISTS,
TURN OFF THE GAS SUPPLY TO THE APPLIANCE AT THE
GAS SERVICE COCK. DO NOT OPERATE ANY ELECTRICAL
SWITCHES. DO NOT OPERATE ANY ELECTRICAL APPLI-
ANCE. OPEN ALL WINDOWS AND DOORS. DO NOT
SMOKE. EXTINGUISH ALL NAKED LIGHTS. CONTACT THE
NATIONAL GAS EMERGENCY SERVICE IMMEDIATLEY ON
0800111999.

When the selector is in the “AUTO” position, boiler func-
tioning is automatically controlled on the basis of the
temperature levels and time periods set. The second
selector must be in the “RUN” position to start.
The programming procedure is described below:
–Setting the time
Set the selector to the “CLOCK“ position. Press “h” to
change the hour on the display, or “m” to change the
minutes. To set the day, press the “1…7” button until
the arrow is pointing to the correct day (1 =
Monday… 7 = Sunday).
–Setting the program
The time clock has 8 on times and 8 off times. To
make it easier to use, the time clock is supplied with
3 on times and 3 off times already set for each day
of the week, as shown below:
To select programmes other than those already set,
move the selector to position “P”; “0:001” will appear
on the display, in which the first three digits indicate
the hour and minutes, while the fourth digit identifies
the program number. Odd-numbered programs iden-
tify requests for operation (day temperature), in
which case the light bulb symbol will appear on the
display, while even-numbered programs identify
drops in temperature (night). Use the “1…7” key to
select the day of the week (from 1 to 7) or days (1 ÷
5, 6 - 7; 1 ÷ 6 or every day if the program is to be
repeated every day of the week). Set the hour and
minutes with the “h” and “m” buttons.
Press “P” to store the operation in memory and go
on to the next program. Repeat the same procedure
to set the remaining programs.
When finished programming, set the selector to
“RUN” position.
–Deleting one or more programs
The on and off time must be deleted for each pro-
gram to be deleted.
Set selector (2) to position “P”. Select the desired
program with button (3), then press button (4) to
delete the day setting (the triangular symbols for the
days should go away). If part of the program is dele-
ted, when you set selector (2) back to the “RUN”
position an error will appear in the clock display,
referring to the program which is incorrect.
To delete all programs, put the selector in position
“P” and press buttons (3) and (5) at the same time.
–Setting the SKIP function
The SKIP function deactivates programs for the next
day and resumes regular programming 24 hours
later.
This function is useful if you will be out all day and
don’t need heating.
To start this function, press button (7), which is acti-
ve only when selector (2) is in “RUN” position.
Once you have selected the SKIP function, it will go
into effect at 0:00 of the next day for 24 hours.
You cannot turn it off once it has started, so regular
programming will not resume until 24 hours have
passed.
DIGITAL TIME CLOCK - Code 8092214
Program Time
1 06,00
2 09,00
3 12,00
4 14,00
5 18,00
6 22,00
NOTE: No program is set from 7 through 17.
or
1 Manual/automatic operation selector
2 Program/schedule setting selector
3 Program button
4 Day of the week button
5 Hour button
6 Minute button
7 SKIP button
8 Reset button
9

10
ANALOGIC RF TIME PROGRAMMER - Code 8092221
The boiler will operate in emergency mode, (heating on for 4 min, off for 9min) if the batteries are removed or discharged.

11
DIGITAL RF TIME PROGRAMMER - Code 8092223
The boiler will operate in emergency mode, (heating on for 4 min, off for 9min) if the batteries are removed or discharged.

Cod. 6272249A - 05/09 - Documentation Dpt.
Sime Ltd
1a Blue Ridge Park
Thunderhead Ridge
Glasshoughton, Castleford, WF10 4UA
Customer Service: 0870 9911114
Sales: 0870 9911116
Technical Support: 0870 9911117
Main Fax: [phone]
www.sime.ltd.uk