Sime Format C User manual

Format C
User instructions
UK
ENSURE THAT THESE INSTRUCTIONS ARE LEFT
FOR THE USER AFTER COMPLETION OF THE
BENCHMARK SECTION
Please read the Important Notice within
this guide regarding your boiler warranty
199838

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.
IMPORTANT NOTICE
For the first year all of our appliances are protected by our manufacturer’s guarantee which covers both parts and
labour.
As you would expect from Sime Ltd, it is our aim to provide our valued customers with the best in after sales and
service.
To take advantage of any extended warranty offered, all you have to do is to adhere to these 3 simple conditions:
• The installation must be carried out to Manufacturers/Benchmark Standards by a Gas Safe Registered
Engineer, and recorded in the installation manual.
• The appliance must be registered with both Sime Ltd and Gas Safe within 30 days of installation.
• The appliance must be serviced annually, by either Sime Ltd or a Gas Safe registered engineer- ensuring that the
Benchmark service record in the installation manual is completed.
Failure to comply with the above will result in only the 12 month warranty being offered.
In the absence of any proof of purchase, the 12 month warranty period will commence from the date of manufacture
of the boiler as shown on the appliance data plate.

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 on the inside back pages 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
1.8 TIME CLOCKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
These appliances comply with the S.E.D.B.U.K. scheme, band “D”
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

OPERATING INSTRUCTIONS FOR THE USER
Fig. 1
KEY
A Temperature/pressure gauge
B Time clock
C Selector switch summer/winter
D C.H. thermostat
E D.H.W. thermostat
F Viewing window
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 “FORMAT C” family is a fully automatic, wall mount-
ed, 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 modu-
lating 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 temperature/pressure gauge is fitted and an overheat ther-
mostat 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.
Check that the burner has lit by looking through the view-
ing window (F). If the burner fails to light, turn the selector
switch summer/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 (D) 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.
A EC
F
B D
DHW
ISOLATION VALVE
6

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-
matically 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 selector switch summer/winter (C) to OFF posi-
tion. 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 selector switch summer/winter (C) to OFF posi-
tion 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
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 (Gas Safe Register).
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 summer/winter to “ “ position and release it imme-
diately, then turn it back to the previous position (see fig. 2).
If the cut-out condition is repeated, turn off the electrical sup-
ply 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. 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.
1.6.5 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.
For ventilation For servicing
ABOVE THE APPLIANCE CASING 200 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 350 mm 500 mm
Fig. 2
Spia rossa
Red led on, ignition lock-out/safety and smokes stats
tripped: turn the selector switch briefly to the position
marked ( ) to restore functioning
Bi-colour green led off if power is cut-off
Bi-colour orange led: C.H. sensor fault
Bi-colour orange led flashing: insufficient system pressure
Green led flashing: fan/smoke pressure switch failure
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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 balanced flue
unit.
The flue terminal MUST NOT BE OBSTRUCTED under
any circumstances.
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 person.
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 APPLIANCE. OPEN
ALL WINDOWS AND DOORS. DO NOT SMOKE. EXTIN-
GUISH ALL NAKED LIGHTS. CONTACT THE GAS SUPPLIER
IMMEDIATELY.

1.8 TIME CLOCK MECHANICAL 24 hr VERSION (Fig. 3)
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 cor-
rect 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 periods 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 mid-
dle of the clock face to the “O” position.
MECHANICAL 24 hr VERSION
Slide blue tappets
OUT for ONperiod
Slide blue tappets IN for OFF period
Mode selector switch
Fig. 3
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