Page 1
Format
34I-34E BF
AUS
Page 2
Page 3
1
SIME COMBINATION BOILERS
Installer checklist
Please remember to carry out the following checks after installation. This will achieve complete customer satis-
faction, and avoid unnecessary service calls. A charge will be made for a service visit where the fault is not due to
a manufacturing defect.
– Has a correct by-pass been fitted and adjusted?
– Has the system been flushed ?
– Is the system and boiler full of water, and the correct pressure showing on the pressure gauge?
– Is the Auto Air Vent open?
– Has the pump been rotated manually?
– Is the gas supply working pressure correct?
– Is the boiler wired correctly? (See installation manual).
– Has the D.H.W. flow rate been set to the customer requirements?
– Has the customer been fully advised on the correct use of the boiler, system and controls?
1 TECHNICAL FEATURES AND DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 GENERAL REQUIREMENTS FOR INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 INSTALLING THE BOILER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 COMMISSIONING AND TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5 ROUTINE SERVICING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6 FAULT FINDING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7 WIRING & FUNCTIONAL DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8 REPLACEMENT OF PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
CONTENTS
Installation and servicing instructions
Page 4
2
1.1 INTRODUCTION
The Sime Format series wall hung boilers are fully automatic
power flued, wall mounted boilers for central heating and
instantaneous production of D.H.W.
Model “34I BF” is an internally installed boiler.
Model “34E BF” is an externally installed boiler.
They are provided with direct fired ignition, and modulating
temperature control, circulating pump and expansion tank.
The central heating output has an adjustable output of 11.2 –
34 kW.
NOTE: The boilers must not to be used for pool or spa
heating. The boilers must be installed only by an authorised person.
1 TECHNICAL FEATURES AND DIMENSIONS
TABLE 2 - Minimum clearances
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
TABLE 1 - Connections
1.2 DIMENSIONAL DETAILS
Fig. 1
“FORMAT 34I BF” model
“FORMAT 34E BF” model
R C.H. return 3/4
M C.H. flow 3/4
G Gas connection 3/4
U Hot water 1/2
E Cold water 1/2
Page 5
3
1.3 GENERAL DATA
TABLE 4 - General specifications
TABLE 3 - Heating data
FORMAT 34I - 34E BF
Main burner injectors No of f 15
Dia for Naural gas
mm 1.45
Dia for LPG mm 0.85
Water capacity l (gal) 4.7 (1.00)
Minimum water flow D.H.W. l/min (gal/min) 2 (0.5)
D.H.W. flow rate
at a temperature rise of 30°C l/min (gal/min) 15.1 (3.3)
35°C l/min (gal/min) 12.9 (2.8)
Burner pressure Natural gas Maximum kPa 0.71
Minimum kPa 0.09
Burner pressure LPG (Propane) Maximum kPa 2.41
Minimum kPa 0.5
Static head Maximum bar (psi) 3.0 (43.5)
Minimum bar (psi) 0.5 (7.3)
D.H.W. pressure Minimum bar (psi) 1.0 (14.6)
Maximum bar (psi) 6.0* (87)
Weight Empty kg (lb) 40 (88)
Total (full) kg (lb) 44.7 (98)
Electrical supply 230 V - 50 Hz, Fused at 3 A
Internal fuse Line: F 1.6 A
Maximum power consumption Watt 160
Maximum gas consumpt. (Natural gas) m3/h 3.68
Maximum gas consumpt. (Propane) kg/h
2.74 - 2.70
Max. working temperature °C (F) 95 (203)
Integral exp. vessel capacity l (gal) 8 (1.76)
* For greater pressures it is necessary to install a pressure reducer in the inlet of D.H.W.
Heat Output Input
(Adjustable) (Adjustable)
FORMAT 34I BF 11.2 - 34 kW 45 - 145 MJ/hr
FORMAT 34E BF 11.2 - 34 kW 45 - 145 MJ/hr
Page 6
4
DHW MCW GAS FLOW RETURN
1.4 HYDRAULIC CIRCUIT
KEY
1Fan
2 Water-gas exchanger
3 Combustion chamber
4 Gas valve
5 D.H.W. exchanger
6 Divertor valve
7 NTC sensor
8 100°C safety thermostat
9 C.H. water filter
10 Air relief valve
11 Circulation pump
12 Expansion vessel
13 Safety valve
14 Drain plug
15 Water flow switch
16 Temperature and pressure gauge
17 Automatic by-pass
18 D.H.W. filter
Fig. 2
6
12
11
10
9
8
7
5
4
3
2
1
13
14
19
1.5 INTERNAL VIEW
KEY
1 Control panel
2 Ignition transformer
3 Combustion chamber
4Fan
5 Combustion analysis intakes
6 Negative pressure intake
7 Positive pressure intake
8 Air pressure switch
9 C.H. sensor (SM)
10 Main exchanger
11 100°C safety stata
12 Gas valve
13 Flow water switch
14 Divertor valve
19 C.H. water filter
Fig. 3
Page 7
5
2.1 INSTALLATION
Models “34E BF” with a hermetically sealed combustion chamber and air supply circuit, may be installed outdoor.
Models “34I BF” with a hermetically sealed combustion chamber and air supply circuit, may be installed in any room in the
home.
2.2 CONNECTING UP SYSTEM
Wash all system pipes well before hooking them up with the
boiler to eliminate any residues which could compromise its
functioning.
The discharge pipe must be connected and extend the pipe
to ensure that any discharge is safety routed any.
THE BOILERS MUST BE INSTALLED STRICTLY IN ACCORDANCE WITH THESE INSTRUCTIONS AND MEET THE
NATIONAL GAS INSTALLATION STANDARD AS 5601.
AND ANY LOCAL WATER AND ELECTRICAL STATE AND
LOCAL GOVERNMENT REGULATIONS WHICH MAY BE
APPLICABLE.
For installations where the heater is connected to larger
systems, the additional volume will need to be taken into
account.
A temperature pressure relief valve may be needed.
An adhesive data plate is sticked inside the front panel; it contains all the technical data identifying the boiler and the type
of gas for which the boiler is arranged.
2.3 CHARACTERISTICS OF FEEDWATER
To prevent lime scale and damage to the tap water exchanger, the water supplied should have a hardness of no more
than 20°F. In all cases the water used should be tested and
adequate treatment devices should be installed.
2.4 FLUE TERMINAL POSITION MODEL “34I BF”
The outlet terminals for forced draught systems may be
located on the outer walls of the building. Fig 4 shows
approximate, non-binding minimum distances to be met for a
building of the type shown in fig. 4.
2 GENERAL REQUIREMENTS FOR INSTALLATION
Fig. 4
Page 8
6
2.5 ELECTRICITY SUPPLY
The electrical connection is made to a standard 10 amp 3
pin outlet. It is essential that a positive earth be made for the
satisfactory operation of the boilers.
THIS MUST BE FITTED BY A QUALIFIED ELECTRICAN.
2.6 WATER SYSTEMS - GENERAL
– This appliance is designed for connection to sealed cen-
tral heating water systems.
– Check that the mains water pressure is sufficient to pro-
duce the required D.H.W. flow rate, but does not exceed
the maximum D.H.W. pressure (Table 4).
Where mains pressure exceed 6 bar a pressure reducing valve must be fitted in the D.H.W. inlet.
2.6.1 Treatment of Water Circulating Systems
The condition of the water in the system is of great importance. Treatment such as Fernox is recommended to reduce
the effect of sludge and scale on the efficiency of the heating
system.
2.7 REQUIREMENTS FOR SEALED WATER SYSTEMS
The heating system design should be based on the following
information:
a) The available pump head is given in fig. 5.
b) The appliance is equipped with an internal by-pass that
operates with system heads (H) greater than 3 m. The
maximum flow through the by-pass is about 300 l/h. If
thermostatic radiator valves are to be installed, at least
one radiator should be without a thermostatic valve (usually the bathroom radiator).
c) The following paragraphs outline the specifications of the
items fitted to the boiler.
2.7.1 Pump
The available head shown in fig. 5 is that in excess of the
appliance hydraulic resistance, i.e. that available for the
system at any given heating load up to the maximum output in C.H. mode.
Never reduce the pump speed below maximum as this will
reduce D.H.W. output. The pump speed is indicated on the
side of the pump speed selector switch (if fitted).
2.7.2 System volume (total water content)
The following Table gives the maximum system volume that
the integral expansion vessel can sustain under different
charge pressure conditions.
If the system volume exceeds that shown, an additional expansion vessel must be fitted and connected to the heating system
primary return pipe as close as possible to the appliance.
If an extra vessel is required, ensure that the total capacity of
both vessels is adequate.
0
200
1600
140012001000800600400
Flow rate (l/h)
Available head (mbar)
500
400
10 0
200
300
Format 34I- 34E
Fig. 5
Page 9
7
NOTE: If the pressure gauge indicates 2.65 bar or greater
when the appliance is at maximum temperature with all
radiators in circulation an extra expansion vessel is
required.
2.7.3 Pressure gauge
A pressure gauge is mounted on the appliance facia panel.
2.7.4 Safety valve
A safety valve set at 3 bar (43.5 psi) is fitted to the appliance
and a discharge pipe is routed to outside of the appliance.
This discharge pipe should be extended to terminate safely
away from the appliance and where a discharge would not
cause damage to persons or property but would be detected.
The pipe should be able to withstand boiling water, be a minimum of 15 mm in diameter, and installed with a continuous fall.
2.8 D.H.W. SYSTEMS
– Check that the mains supply pressure is within the pre-
scribed limits (
Table 4
).
If necessary, a pressure reducing valve should be fitted to
the mains supply before the D.H.W. inlet connection.
– A maximum D.H.W. flow rate of: 14 l/m (3.1 gpm) is rec-
ommended. Higher flow rates will not damage the appliance but may lower the water temperature below an
acceptable level.
– If the appliance is installed in an area where the tempo-
rary hardness of the water supply is high, say over 150
ppm, the fitting of an in line scale inhibitor may be an
advantage. Consult the Local Water Undertaking if in
doubt.
– Devices capable of preventing the flow of expansion water:
e.g. non return valves and/or loose-jumpered stop cocks
should not be fitted unless separate arrangements are
made for expansion water.
– For specific information relating to fittings (eg. Showers,
washing machines etc.) suitable for connection in the
D.H.W. circuit, consult the Local Water Undertaking, however the following information is given for guidance.
2.8.1 Domestic hot/cold water supply
taps and mixing taps
All equipment designed for use at mains water pressure is
suitable.
2.8.2 Showers
If a shower control is supplied from the appliance it should be
of the thermostatic or pressure balanced type.
Thermostatic type shower valves provide the best comfort
and guard against water at too high temperature.
Existing controls may not be suitable, refer to the shower
valve manufacturer.
Vessel charge and initial system
pressure
Total water content of system
using 8 l (1.76 gal) capacity expan-
sion vessel supplied with appliance
For systems having a larger capaci-
ty multiply the total system capacity
in litres (gal) by the factor to obtain
the total minimum expansion vessel
capacity required litres (gal)
bar
psi
l
gal
0.5
7. 3
96
21.1
.0833
1. 5
21.8
51
11. 2
.15 6
1. 0
14.5
74
16.2
.10 9
TABLE 6
Page 10
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APPLIANCE PACKAGE:
- boiler (assembled);
- installation and servicing instructions;
- users instructions;
- wall mounting bracket;
- fixing screws with wall plugs.
3.1 FIXING THE WALL MOUNTING BRACKET
Before installing the appliance ensure that the chosen location is suitable (section 2.2) and that the requirements for
flue position, (section 2.3), and minimum clearances, (
Table 2
)
are satisfied.
These minimum clearances are essential to provide access
for servicing, and are included on the wall mounting templates.
– Open the paper wall mounting templates. If a rear flue is
to be used, discard the side templates and secure the
rear template in the desired position. For a side flue application, secure both the rear and appropriate side template in position.
– Mark the position of the two wall mounting bracket fixing
holes and the flue/air duct hole on the appropriate wall(s).
– Remove the template(s) and drill the two fixing holes using
a 10 mm masonry drill. Fit the plastic plugs provided.
– Cut the hole in the wall for the flue/air duct. The diame-
ter should not be less than 100 mm (4 in) and must be
horizontal. Refer to fig. 12-14.
– Accurately measure the wall thickness, and note this
dimension for later use.
– Secure the wall mounting bracket in position using the
screws provided. Ensure that it is the correct way up, as
indicated in fig. 6.
3.2 HANGING THE BOILER
– Lift the appliance into position. The upper cross member
locates onto the wall mounting bracket.
– Screw in the wall mounting bracket adjusting screws until
the appliance is secure and vertical.
3.3 FLUE DUCTS MODEL “34I BF”
The air inlet-smoke outlet assembly ø 60/100 is supplied in a
kit code 8084811 complete with mounting instructions.
With the curve supplied in the kit the maximum horizontal
length of the flue must not exceed 3 metres.
When the extension code 8086908 is used, the end of
the flue must always have a horizontal outlet.
The diagrams in fig. 7 illustrate a number of examples of different coaxial outlets.
3 INSTALLING THE BOILER
Fig. 6
KEY
1 Wall mounting bracket
2 Plastic wall plug (2 Off)
3 Woodscrew (2 Off)
4 Washer (2 Off)
5 Adjustment screw (2 Of f)
KEY
1 Coaxial flue kit code 8084811
2 a Extension L. 1000 code 8096100
2 b Extension L. 500 code 8096101
3 Vertical extension L. 200 code 8086908
4 Additional 90° curve code 8095800
6 Ar ticulated tile code 8091300
7 Roof outlet terminal L. 1284 code 8091200
8 Vertical condensation collector L. 200 code 8092803
Fig. 7
IMPORTANT:
– Each additional 90° curve installed reduces
the available length by 0.90 metres.
– Each additional 45° curve installed reduces
the available length by 0.45 metres.
– It is advisable to assemble the condensation
collector (8) on vertical segments exceeding
2.5 metres in length and to limit maximum
length to 4 metres.
max 3 m
min. 1,3 m - max. 3 m
x
4
y
2
3
min 1,3 m - max 5 m
7
6
2
8
3
C42
x + y = max 3,5 m "25"
x + y = max 3,0 m "30-35"
C32
max 3,5 m "25"
max 3,0 m "30-35"
C12
1
Page 11
9
3.3.1 Coaxial flue diaphragm
The boiler is normally supplied with ø 87.5 diaphragm. Insert
the diaphragm only if the length of the coaxial flue.
Refer to fig. 8 for positioning.
With outlet type C12, install diaphragm ø 87.5 only if the coaxial flue is less than
1.5 metres.
With outlet type C32, use the following diaphragms, depending on flue length and
without any additional curves:
Installations with vertical extension L. 200 Installations with condensation
code 8086908 collector code 8092803
Optional Standard Standard None
diaphragm ø 86
diaphragm ø 87,5 diaphragm ø 87,5
diaphragm
(cód. 6028623)
L min = 1,3 m L min = 2,5 m L max = 2,5 m L min = 2,5 m
L max = 2,5 m L max = 3 m L max = 3 m
Fig. 8
Page 12
10
3.6 SAFETY VALVE CONNECTION
– The appliance safety valve is located towards the R.H.S. of
the boiler and the discharge pipe is supplied loose.
Remove the two self tapping screws and lower the control
box to improve access.
– Connect the discharge pipe to the valve outlet, and extend
the pipe to ensure that any discharge from the safety valve
is safely routed to a drain.
The discharge pipe should be a minimum of 15 mm copper,
and must avoid sharp corners or upward pipe runs where
water may be retained.
3.7 WIRING INSTRUCTIONS (fig. 12)
– Disconnect the electric power supply before performing
any work.
Warning: all components in the control panel are fed
with 240V.
– Remove the three screws (7) locking the control panel in place
and pull the panel forward until it can be tilted downward.
– To access the components of the electrical panel,
unscrew the four screws holding the protective guard in
place (5).
– To gain access to connector “TA”, remove the control
panel cover and connect the room stat to the terminals 26 after having removed the jumper (6).
– Carry out electrical system checks through a suitable test
meter: earth continuity, polarity, resistance to earth and
short circuit.
– Re-secure control box.
– Ensure sufficient length of cable to allow access to control
panel.
Page 13
11
9
Fig. 12
ATTENTION: After having removed the three fixing screws, tilt the panel downward to gain access
.
KEY
1 Temperature and pressure gauge
2 Time programmer housing
3 Rotary switch
4 Main PCB
5 Earth faston
6 Control panel protection
7 Cover (TA)
8 Connector (TA)
9 Fixing screw
1
56
2 3
8
7
4
Page 14
4.1 FILLING THE WATER SYSTEM
– Loosen the automatic air vent cap (10 fig. 2).
– Open all radiator valves and system air vents. Close all air
vents. Do not close the A.A.V. the one near the pump!
– Check the system for water soundness.
–
Completely drain the appliance and heating system, thorough-
ly flush the system, and refill the system design pressure.
– Open the D.H.W. inlet valve, open any hot tap, clear of air
bubbles. Close hot tap.
4.2 COMMISSIONING THE BOILER
–
Remove the screw and connect a pressure gauge to the
burner pressure test point on the gas valve (fig. 13).
–
Ensure that the rotary switch on the facia panel is set to the
SUMMER position “ ” (D.H.W. Only), turn the D.H.W. ther-
mostat to maximum (fully clockwise), and turn on the electri-
cal supply. Fully open any D.H.W. tap and the burner will light.
–
Allow the boiler to run for at least 5 minutes and check
that the burner pressure is as stated in section 1.3. The
D.H.W. burner pressure is factory set and should not
require adjusting. If the burner pressure is low, check that
the appliance has not begun to modulate (this will occur if
the D.H.W. flow rate is low. If modulation is suspected, open
all D.H.W. taps to maximise flow and recheck burner pres-
sure). If it is necessary to adjust the D.H.W. burner pres-
sure the method is described in section 8.6.
– Reduce the D.H.W. draw off rate to the minimum neces-
sary to maintain the burner alight by carefully adjusting
the D.H.W. inlet valve and check that the burner pressure
decreases in response to D.H.W. temperature rise. Fully
open the inlet valve.
– Close the D.H.W. tap and ensure that the burner is extin-
guished and the pump stops.
4.3 SETTING THE C.H. INPUT
– Turn the rotary switch to the WINTER position “
❄
" and
ensure that the room thermostat (if fitted) is calling for
heat. Turn the C.H. thermostat knob to maximum (fully
clockwise) and the burner will light.
– Allow the boiler to run for at least 5 minutes and check
the burner pressure. The heating input is factory set as
stated in
Table 4
.
– If the heating output is to be adjusted, proceed as follows:
– refer to section 1.3 and establish the desired burner
pressure;
– remove (pull forwards) the C.H. knob protecting the
potentiometer;
– set the burner pressure as required using a small
screwdriver on potentiometer (1 fig. 14). Rotate the
screw anti-clockwise to reduce the burner pressure;
– operate the rotary switch between SUMMER and WIN-
TER position a few times and check that the correct
burner pressure is maintained.
– Replace the C.H. knob over potentiometer.
– To set the time clock see the user instructions.
4.4 SETTING THE D.H.W. FLOWRATE
A restrictor nut is fitted into the diverting valve to reduce the
D.H.W. flow to that which will give an acceptable D.H.W. temperature. To set the D.H.W. flow, procede as follows:
– select Summer position “ ” and turn the D.H.W. thermo-
stat to max.;
– fully open the D.H.W. tap furthest from the boiler;
–
check that the boiler is firing at maximum burner pressure;
– adjust the D.H.W. flowrate by turning the restrictor lever
on the divertor valve until a D.H.W. temperature rise of
approx 35°C is achieved. This corresponds to the
flowrates shown in
Table 4
;
– turn off the tap;
– remove the pressure gauge and refit the sealing screw;
Remember that the flow rates and corresponding temperatures
of use of hot water, given in
Table 4
, have been obtained by posi-
tioning the selector of the circulation pump on the maximum value.
Should there be any reduction in the D.H.W. flow rate, the filter
installed on the inlet to the pressure switch valve may need
cleaning.
To gain access to the filter, first close the cold water, drain the
D.H.W. circuit via the lowest tap, make provision to collect a
small discharge of water, then loosen the brass swivel connection to access the filter.
12
4 COMMISSIONING AND TESTING
Fig. 13
KEY
1 “Heating output” trimmer
6 “Ignition pressure” trimmer
NOTE: To gain access to trimmers (1) and (6),
take off the central heating potentiometer knob.
Fig. 14
BURNER PRESSURE
TEST POINT
1
6
Page 15
13
4.5 FINAL CHECKS
– Re-light and test for gas soundness.
– Re-fit the casing front panel and securing brackets.
– Set the C.H. and D.H.W. potentiometers to the required
settings.
– Ensure that the time clock is set at the desired time peri-
ods. Set the room thermostat (if fitted) to the required
setting.
4.6 USER’S INSTRUCTIONS
Upon completion of commissioning and testing the system,
the installer should:
– Give the “Users Instructions” to the householder.
– Explain and demonstrate the lighting and shutdown proce-
dures.
– Advise the householder on the efficient use of the system,
including the use and adjustment of all system controls
for both D.H.W. and C.H.
– Advise the user of the precautions necessary to prevent
damage to the system, and to the building, in the event of
the system remaining inoperative during frost conditions.
– Explain the function of the boiler overheat thermostat, and
how to reset it. Emphasise that if cut-out persists, the boiler should be turned off and the installer or service engineer consulted.
– Stress the importance of an annual service by a regis-
tered heating engineer.
Page 16
14
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 registered personnel.
Before commencing any service operation, ISOLATE the
mains electrical supply, and TURN OFF the gas supply at the
main service cock. Service the appliance by following the full
procedure detailed below.
5.1 MAIN BURNER ASSEMBLY
5.1.1 Model “FORMAT 34I BF” (fig. 15)
– Remove the casing.
– Remove the 8 fixing screws securing the sealed chamber
front panel then remove the panel.
– Unscrew the 7 screws securing the combustion chamber
front panel and remove the panel, taking care not to damage the insulation.
– Remove the electrode by unscrewing it from the burner
manifold.
– Unscrew the burner manifold union and locking nut. Lift
the front of the burner to disengage manifold thread and
then lift the burner clear.
– Remove the burner manifold by disconnecting the four
screws.
– Inspect and if necessary, clean the injectors, electrodes,
and the main burner bars.
5.1.2 Model “FORMAT 34E BF” (fig. 15)
– Remove the rubber ring around the flue terminal.
– Remove two screws each side at the underside of the
casing.
– Pull the bottom of the case forward, to disengange the
lower location studs, and then lift straight up, to disengange the upper location studs, and withdraw the casing
over the boiler
NOTE: Use the reverse of the above procedure to replace the
casing, taking care not to trap the wiring on the R.H. side.
5.2 FAN ASSEMBLY
– Disconnect the electrical connections to the fan. Note the
position of the earth conductor.
5 ROUTINE SERVICING INSTRUCTIONS
Fig. 15
SCREWS
1
2
3
4
“FORMAT 34I BF” model “FORMAT 34E BF” model
1
2
Page 17
– Remove the three screws securing the fan.
– Tilt the fan forwards and remove in a downwards direction.
– Inspect the fan assembly and clean if necessary.
5.3 HEAT EXCHANGER
Inspect the heat exchanger, and clean if necessary as
showed in fig. 16.
5.4 WATER FLOW SWITCH
– Revome the cover from the micro assembly to gain
access to the flow switch spindle.
– Ensure the spindle is free to move (see fig. 17).
– Re-assemble the cover.
5.5 CHIMNEY SWEEP FUNCTION
(combustion analysis)
To carry out the verification of combustion in the boiler turn
the selector and stop on the position ( ) until the
green/orange led starts to flash intermittently. From that
moment the boiler will start functioning in heating mode at
the maximum power, with switching off at 80°C and restarting at 70°C.
Before activating the chimney sweep function make sure
that the radiator valves or eventual zone valves are open.
The test may be carried out also during D.H.W. mode. To do
so it is enough, after having activated the chimney sweep
function, to take some hot water from one or more outlets.
Even in this condition the boiler functions at the maximum
temperature always with the primary controlled between
80°C and 70°C.
During the entire duration of the testing the
hot water taps must remain open. After verifying the combustion the boiler should be switched off by placing the selector
on the OFF position; then return the selector to the desired
function.
ATTENTION:
After about 15 minutes, or once the hot
water request has been fulfilled, the chimney sweep function automatically deactivates.
5.6 RE-ASSEMBLY
– Re-assemble all the components in reverse order and
replace all the gaskets fitted in the gas line.
Ensure that all seals are correctly fitted and that the pressure sensing line is correctly fitted.
Check that the fan earth connection is correctly re-fitted.
Note that the fan polarity (Line and Neutral) is immaterial.
– Check for gas soundness before fitting the casing.
5.7 RE-COMMISSIONING
– Turn on the gas supply, and check for gas soundness
whilst the appliance is running.
– Check the operation of the appliance in both C.H. and
D.H.W. mode and ensure in both cases that the burner
pressure after at least 5 minutes running is as stated on
the data plate or in
Table 4
. Adjust if necessary as
15
Fig. 16
Fig. 17
8 SEALED CHAMBER SCREWS
3 FAN FIXING SCREWS
MAIN EXCHANGER
BURNER MANIFOLD
UNION
7 COMBUSTION CHAMBER
FRONT PANEL SCREWS
Page 18
described in section 8.
When any service or replacement of electrical components
which has required the breaking and re-making of electrical
connections has taken place, the following tests must be
repeated:
– earth continuity;
– short circuit;
– polarity;
– resistance to earth.
5.8 CLEANING THE C.H. WATER FILTER (fig. 18)
To clean the filter, close the delivery/return on/off taps, turn
off the power to the control panel, remove the casing and
empty the boiler using the drain provided (14 fig. 2) until the
hydrometer shows “zero”. Place a container for collection
underneath the filter, unscrew the cap and proceed to clean
the filter, removing impurities and limestone deposits. Check
the seal o-ring before reassembling the cap with the filter.
16
Fig. 18
Page 19
17
6.1 EARTH CONTINUITY CHECK
Appliances must be electrically disconnected, meter set on Ω
(ohm) x 1 scale and adjust zero if necessary. Tests leads from
any appliance earth point (e.g. inside control box) see wiring
diagrams (section 7) to earth pin on plug. Resistance should
be less than 1 Ω (ohm). If the resistance is greater than 1 Ω
(ohm) check all earth wires for continuity and all contacts are
clean and tight. If the resistance to earth is still greater than
1 Ω (ohm) then this should be investigated futher.
6.2 SHORT CIRCUIT CHECK
Switches turned FULL ON - meter set on Ω (ohms) x 1 scale.
Test leads from L to N on appliance terminal block, if meter
reads 0 then there is a short circuit.
Meter set on Ω (ohm) x 100 scale. Repeat it with leads from
L to E. If meter reads less than infinity (∞) there is a fault.
NOTE: Should it be found that the fuse has failed but no
fault is indicated, a detailed continuity check (i.e. by disconnecting and checking each component) is required to trace
the faulty component.
It is possible that a fault could occur as a result of local
burning/arcing but no fault could be found under test.
However, a detailed visual inspection should reveal evidence of burning around the fault.
6.3 POLARITY CHECK
Appliance reconnected to mains supply and meter set on
300 V ac scale. Test at appliance terminal block.
– Test leads from L to N meter reads approx.: 240 V ac.
– Test leads from L to E “ ” meter reads approx. 240 V ac.
–
Test leads from N to E “ ” meter reads from 0 to 15 V ac.
6.4 RESISTANCE TO EARTH CHECK
Appliance must be disconnected from main supply and meter
on Ω (ohm) x 100 scale.
All switches including thermostat on test leads from L to E - if
meter reads other than infinity (∞) there is a fault which
should be isolated. A detailed continuity check is required to
trace the faulty component.
IMPORTANT:
These series of checks are the first electrical checks to be
carried out during a fault finding procedure. On completion
of the service/fault finding task which has required the
breaking and remaking of electrical connections then the
checks 6.1 Earth continuity, 6.3 Polarity and 6.4
Resistance to earth must be repeated.
6.5 FAULT FINDING LEDS
The indicator leds signalling irregular and/or incorrect operation of the equipment are indicated in fig. 19.
Before commencing any service operation, ISOLATE the
mains electrical supply, and TURN OFF the gas supply at the
main service cock. It is the law that any service work must be
carried out by registered personnel.
6 FAULT FINDING
Fig. 19
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
Red led on, ignition lock-out/safety and smokes stats
tripped: turn the selector switch briefly to the position
marked ( ) to restore functioning
Page 20
18
6.6 C.H. MODE - FAULT FINDING
Start from cold Rotary switch set to WINTER position.
Room thermostat (if fitted) calling for heat and all D.H.W. taps off.
C.H. thermostat set to maximum position.
Clock in the on position.
NOTE:
After completing fault finding reset the room thermostat (if fitted) to the required setting. If the appliance will not function
check the wiring to the clock and if necessary, replace the clock.
Is there power
at the external
socket?
Make
power
available
Does
the pump
start?
After 20 seconds
from start of the
pump is the green
led flashing?
Is flow water
switch closed?
Does
the fan
start?
Is there a spark
at the ignition
electrode?
Is fuse
at mains
plug OK?
Is there power
at L and N
terminals?
Is the green
led on?
Check flow
water switch
and the C.H.
water filter
Flue fault.
Check air pressure
switch and
connections
After 20 seconds
from start of the
fan, is the green
led flashing?
Replace fuse
on the PCB
Replace fuse in
mains plug
Check wire
connections
to L and N
terminals
Is the clock in
the correct
band time?
Check the
time clock.
Do the contact
open and close
when the clock
turns?
Is there 230V AC
available at the
fan terminals?
Replace the PCB
Check: gap
between the
electrode and
burner, conditions
of the electrode
and ignition
transformer.
Does it spark
now?
Turn the clock
to the right
position
Close room
thermostat
contact
Replace
the fan
Is there voltage
available
to the pump?
Replace
the clock
Check pump
connection
Is pump shaft
free to rot ate?
Replace
the pump
Make it free to
rotate
Has the PCB
ignition
locked-out after
10 seconds
without flame
at the burner?
Has the PCB
ignition
locked-out after
10 seconds
with flame
at the burner
before lock?
Check: gap
between the
electrode and
burner, conditions
of the electrode
and ignition
transformer.
Does it now
detect the flame?
Can the burner
pressure be
reduced by the
C.H. adjuster?
Does the burner
pressure reduce
as the temperature
rises towards max.?
Check:
1) C.H.
thermistor
2) PCB control
board
After two minut es
(safety time +
C.H. delay time),
is the burner
pressure set to
the maximum?
Is there
voltage at the
modulator?
Does the boiler
switch off before
achieving the tem-
perature?
Is the gas
available?
Open the
gas cock
Is L and N
polarity correct?
Replace the
modulator
Replace the PCB
Is the safety
thermostat OK?
Replace the
safety
thermostat
Correct
Replace the
C.H. thermistor
Is there
voltage available
to the gas valve?
Replace the
gas valve
Check the
connection
Boiler is
satisfactory
Yes
No
Is the room
thermostat
contact closed?
Yes
No
Yes
No
Yes
No
No
Yes
No
Yes
No
Yes
Yes
Yes
Yes
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes No Yes
No
No
No
No
No
No
Yes Ye s Yes Yes
No
Yes
Yes
No
No
No
No
Yes
Yes
Yes
No
Yes
No
No Yes
No
No
No
No
Page 21
19
6.7 D.H.W. MODE - FAULT FINDING
Start from cold - rotary switch set to SUMMER position, D.H.W. thermostat set to maximum, and all D.H.W. taps OFF.
Is there power
at the external
socket?
Make
power
available
Does
the pump
start?
Does
the fan
start?
Is there a spark
at the ignition
electrode?
Is fuse
at mains
plug OK?
Replace
3 amp fuse
Replace fuse on
the PCB
Is the green
led on?
After 20 seconds
from start of the
pump is the green
led flashing?
Flue fault.
Check air pressure
switch and
connections
After 20 seconds
from start of the
fan, is the green
led flashing?
Make it
free to
rotate
Is there power
at L and N
terminals?
Check wire
connections
to L and N
terminals
Is there
voltage available
at the pump?
Is flow water
switch closed?
Check flow
water switch
and the C.H.
water filter
Check: gap
between the
electrode and
burner, condition
of the electrode
and ignition
transformer.
Does it spark
now?
Is pump
shaft free
to rotate?
Open any
D.H.W. tap
to give flow
2.8 l/min.
Can you
get the desired
flow at the
D.H.W. taps?
Are D.H.W.
microswitches
operating?
Check pump
connection
Is there 230V ac
available at the fan
terminals?
Replace the PCB
Replace the
pump
Replace the
divertor valve
Replace the fan
Check filter at inlet
of hydraulic group
Has the PCB
ignition
locked-out after
10 seconds
without flame
at the burner?
Has the PCB
ignition
locked-out after
10 seconds
with flame
at the burner
before lock?
Is the gas
available?
Open the
gas cock
Is the safety
thermostat OK?
Replace the
safety thermostat
Is there voltage
available to
the gas valve?
Check
the connection
Replace the
gas valve
No
Yes
Yes
Yes
Yes
Yes
Yes
No
No No
No
Yes
No
Yes
Yes
No
Yes
No
No
Yes
No No No
No
Yes
Yes
No
Yes
No
No
No
Yes
Yes
No
Yes
Yes
Yes
No
No
No
Yes
Check: gap
between the
electrode and
burner, conditions
of the electrode
and ignition
transformer.
Does it now
detect the flame?
Can the burner
pressure be
reduced by the
D.H.W. adjuster?
Does the burner
pressure reduce
as the temperature
rises towards max.?
Check:
1) C.H.
thermistor
2) PCB control
board
Is the burner
pressure set to
the maximum?
Is there
voltage at the
modulator?
Replace the
C.H. thermistor
Does the boiler
switch off before
achieving the tem-
perature?
Is L and N
polarity correct?
Replace the
modulator
Replace the PCB
Correct
Boiler is
satisfactory
Yes
Yes Ye s Yes Yes
No
Yes
Yes
No
No
No
No
Yes
No
No
No
Page 22
20
7 WIRING & FUNCTIONAL DIAGRAMS
7.1 ILLUSTRATED FLOW WIRING DIAGRAM
5VDC
5VDC
24VRAC
24VAC
24VRAC
240VAC
240VAC
240VAC
240VAC
240VAC
240VAC
24VDC
240VAC
Fig. 20
Fig. 21
7.2 TIME PROGRAMMER (optional)
The control panel is designed to allocate a timer-programmer, code 8092208, which can be supplied upon request. To
fit the timer, remove the housing blanking piece from the
control panel and, with the panel open, fit the timer to the
panel using the screws supplied therein (see fig. 21).
Connect the unit as shown in the wiring diagram (fig. 20).
7.3 KIT FOR LOW TEMPERATURE SYSTEM (optional)
This kit (SIME cod. 8089830) consists of the following components: thermostat at 50°C, connector and 2 fixing screws.
JUMPERS
NOTE:
– The room thermostat must be
connected to the terminals 1011 of the “TA” connector after
having removed the link.
– To remote control the boiler
connect an external clock to the
terminals 10-11 (24 V) of the
“TA” connector and set the
built-in clock to “constant”
mode (see user instructions for
details).
JUMPERS POSITION AND FEATURES
JUMPER POSITION AND FEATURE SUPPLY POSITION
CLOSED OPEN
J7 - METANO/GPL Ready to function with LPG Ready to function with natural gas Open
J8 - ANN. RIT.* Ignition delay cancelled Ignition delay operating Open
* In the heating phase, the electronic board is programmed to include a burner technical delay interval of approx. 3 minutes, which
occurs both at system cold starting and at subsequent re-ignitions. The aim is to overcome the problem of repeated ignitions and turning off with ver y short time intervals between. This could occur in particular in systems presenting high head losses. At each restart
after the period of slow ignition, the boiler will set itself for about 1 minute at the minimum modulation pressure, and will then move
to the heating pressure value set.
Page 23
21
Before commencing any service operation, ISOLATE the
mains electrical supply, and TURN OFF the gas supply at the
main service cock. It is the law that any service work must be
carried out by registered personnel.
8.1 HEAT EXCHANGER
– Remove the fan as described in section 8.3.
– Disconnect the pressure sensing pipe from the flue box,
lift the collector hood assembly, tilt forwards, and remove
the hood.
– Isolate the boiler from the system.
– Drain the heat exchanger using the drain cock (at the bot-
tom RHS of the appliance)
– Unclip the heat exchanger securing clips and unscrew
completely the expansion vessel nut.
– Disconnect the pipes from the exchanger and lift out the
heat exchanger.
– Re-assemble in reverse order, ensuring that the heat
exchanger seals and clips are correctly located and that
the pressure sensing pipe is correctly re-fitted. The fan
polarity is not important except the ear th conductor (G/Y
which is marked on the appliance).
– Refill, and re-commission the system as described in sec-
tion 4.
8.2 COMBUSTION CHAMBER INSULATION
The design of this appliance is such that the rear and side
insulation should not require replacement unless mechanically damaged.
IMPORTANT: When handling insulation panels, take care to
avoid producing or inhaling dust particles. When removing
old or damaged insulation panels, dampen with water to
minimise dust.
To replace the insulation front panel, proceed as follows:
– remove the combustion chamber front panel as
described in section 5.1;
– replace the front insulation panel and glue it into position
on the front panel using the glue supplied. Re-assemble in
reverse order.
Should the rear or side panels become damaged, replace
them as follows.
– remove the heat exchanger as described in section 8.1;
– remove the side insulation panels followed by the rear
panel;
– re-assemble in reverse order, refill, and recommission the
system as described in section 4.
8.3 FAN ASSEMBLY
– Remove the casing front panel and sealed chamber front
panel as described in section 5.1.
– Disconnect the electrical connections and the pressure
sensing pipes to the fan. Note the position of the earth
conductor.
– Unscrew the three screws securing the fan.
– Drop and tilt the fan forwards and remove in a down-
wards direction.
– Re-assemble in reverse order. Ensure that the earth con-
nection is correctly refitted. Note that the polarity (Line
and Neutral) is immaterial.
8.4 MAIN BURNER
– Remove the main burner by following section 5.1.
– Transfer the ignition electrode onto the new burner
assembly.
– Re-assemble in reverse order. Check the electrode gaps
(fig. 23) and test for gas soundness.
– Re-commission the appliance as described in section 4.
8.5 IGNITION/DETECTION ELECTRODE (Fig. 22)
– Remove the casing front panel and sealed chamber front
panel as described in section 5.1.
– Unscrew the single screw securing the electrode in posi-
tion, and release the electrode from the burner.
– Remove the electrode and disconnect its cable from the
ignition transformer.
– Replace the electrode and re-assemble in reverse order.
8.6 GAS VALVE
– Remove the casing front panel as described in section 5.1.
– Disconnect the two leads from the modulating solenoid
and disconnect the valve connector (one screw).
– Unscrew the nut between the inlet pipe and the valve.
–
Unscrew the burner manifold nut underneath the
sealed chamber, and withdraw the gas valve complete
with outlet pipe.
– Transfer the outlet pipe onto the new gas valve, using a
new gasket (supplied with the valve).
– Fit the new gas valve assembly into the appliance using
the other new gasket supplied on the valve inlet, and re-
assemble in reverse order.
– Re-light the appliance, check for gas soundness, and re-
commission in accordance with section 4.
In addition it will be necessary to set the D.H.W. and C.H.
heat inputs, with reference to fig. 23, as follows:
Note that it is necessary to set the MAXIMUM PRESSURE FIRST.
–
Connect a pressure gauge to the burner pressure
test point.
– Remove the sealing cap of the proportioning unit (C) by
rotating it ⁄ turn anticlockwise.
– Adjust DHW potentiometer to maximum, then fully open
any DHW tap to light the boiler.
– Using a 10 mm spanner, turn nut (B) to attain the maxi-
8 REPLACEMENT OF PARTS
Fig. 22
4
± 0.5
IGNITION/DETECTION
ELECTRODE
Page 24
22
mum pressure in
Table 4
.
Turn the nut clockwise to increase or anti-clockwise to
decrease the burner pressure.
–
Turn the main selector switch on and off a few times (with
the hot tap still open) and check that the pressure returns
to the correct (set) maximum value (as in
Table 4
).
–
Set the minimum burner pressure by first isolating the
electricity supply and disconnecting one of the modulating solenoid leads, then restore the electricity supply and
fully open a DHW tap to light the appliance at minimum
gas rate.
–
Set the minimum pressure with reference to Tables 4 by
holding nut (B) in position with a 10 mm spanner and rotating the plastic screw (A) with a screwdriver until the correct
pressure is obtained. Turn the screw clockwise to increase
the pressure or anti-clockwise to decrease it. It is essential
that the max pressure has been set prior to adjusting the
minimum pressure. Check that the minimum pressure is
correctly set by turning on and of f the D.H.W. inlet valve several times and ensuring that the pressure returns to that
previously adjusted;
– Isolate the power supply, re-connect the modulation lead,
restore the power and re-check the maximum pressure,
then re-fit the plastic cover (1).
– Reduce the D.H.W. draw off rate to the minimum nec-
essary to maintain the burner alight by carefully adjusting
the D.H.W. Inlet valve and check that the burner pressure
decreases in response to D.H.W. temperature rise. Fully
open the inlet valve;
– Close the D.H.W. tap and ensure that the burner is extin-
guished and the pump stops.
– Adjust the Central Heating maximum pressure as
described in section 4.1.
8.7 AIR PRESSURE SWITCH
– Remove the casing front panel and sealed chamber front
panel as described in section 5.1.
– Disconnect the pressure sensing pipe from the switch.
– Remove the switch (two screws) and fit the new one.
– Transfer the electrical connections one at a time (to ensure
that they are not incorrectly re-fitted) to the new switch.
– Re-assemble in reverse order referring to the wiring dia-
grams (section 7) if necessary. Ensure that the pressure
sensing lead is correctly connected to the low pressure
connection on the pressure switch (marked P2).
8.8 OVERHEAT THERMOSTAT
The overheat thermostat is situated on the flow pipe, below
the sealed chamber (11 fig. 3).
– Remove the casing front panel as described in section 5.1.
– Disconnect the two overheat thermostat wires.
– Unscrew the two limit thermostat fixing screws and
remove the thermostat.
– Replace the thermostat and spread heat sink compound
(supplied) over the base of the new one.
– Re-assemble in reverse order (Polarity is immaterial).
8.9 THERMISTOR
The thermistor is placed over the main exchanger.
– Remove the casing front panel as described in section 5.1.
– Isolate the boiler from the system and drain the appliance
through the drain plug (14 fig 2).
– Pull off the electric connection, and unscrew the thermis-
tor from the exchanger.
– Replace the thermistor and re-assemble in reverse order.
Table 8 shows the resistance values (Ω) that are obtained
on the sensor as the temperature varies.
8.10 DRIVER PCB
– Remove the casing front panel as described in section 5.1.
–
Open the control panel protecting cover by removing the
four fixing screw.
– Pull off the potentiometer knobs.
– Release the PCB (four screws), transfer all connections
onto the new PCB, and re-assemble in reverse order.
–
Re-set the CH burner pressure as described in section 4.3.
8.11 PUMP MOTOR
– Remove the casing front panel as described in section 5.1.
– Unplug the electrical connection plug.
– Isolate the boiler from the system and drain the appliance
through the drain plug (14 fig 2).
– Unscrew the four fixing screws on the motor.
– Replace the pump motor and re-assemble in reverse
order. If the new pump is fitted with a speed adjuster,
ensure that the speed is set to maximum.
–
Refill and commission the system as described in section 4.1.
8.12 D.H.W. HEAT EXCHANGER
– Remove the casing front panel as described in section 5.1.
– Isolate the boiler from the system.
KEY
A Plastic screw
BNut
C Sealing cap
Fig. 23
Temperature (°C) Resistance (Ω)
20 12,090
30 8,313
40 5,828
50 4,161
60 3,021
70 2,229
80 1,669
TABLE 8
Page 25
23
– Drain the appliance through the drain point (14 fig. 2).
– Drain the D.H.W. circuit by opening any D.H.W. tap below
the level of the boiler.
– Lift off the microswitch assembly.
– Remove the three screws fixing the D.H.W. heat exchang-
er and remove the heat exchanger.
– Fit new heat exchanger and re-assemble in reverse order
using the new gaskets supplied with the heat exchanger.
– Refill and re-commission the system as described in sec-
tion 4.1.
8.13 DIVERTOR VALVE - COMPLETE
– Remove the casing front panel as described in section 5.1.
– Isolate the boiler from the system.
– Drain the appliance through the drain point (14 fig. 2).
– Drain the D.H.W. circuit by opening any D.H.W. tap below
the level of the boiler.
– Lift off the microswitch assembly.
– Remove the three screws fixing the D.H.W. heat exchang-
er and remove the heat exchanger.
– Pull out the divertor valve circlip and remove the valve.
– Transfer the electrical connections onto the new valve. If
necessary. refer to the wiring diagrams in section 7.
– Re-assemble in reverse order, using the new gaskets sup-
plied with the valve.
– Refill and re-commission the system as described in section 4.1.
8.14 DIVERTOR VALVE - MICROSWITCH ASSEMBLY
– Remove the casing front panel as described in section 5.1.
– Remove the two screws pivot the control box downwards.
– Lift off the microswitch assembly.
– Transfer the electrical connections onto the new
microswitch assembly. If necessary refer to the wiring dia-
grams in section 7.
– Re-assemble in reverse order.
8.15 C.H. EXPANSION VESSEL
Replacement is not recommended if a rear flue outlet is used
or if the clearance above the casing is less than 300 mm.
– Remove the casing front panel as described in section 5.1.
– Isolate the boiler from the system and drain the appliance
through the drain plug (14 fig 2).
–
Unscrew
the expansion vessel union on the C.H. return
pipe.
– If a rear flue outlet is used it is necessary to disengage
the flue and air duct temporarily. Refer to section 3.5.
– Remove the adjusting screws on the wall mounting brack-
et thereby allowing the appliance to move slightly for-
wards at the top.
–
Lift the expansion vessel out of the appliance through
the top.
– Replace the expansion vessel and re-assemble in reverse
order. Re-pressurise and re-commission the system as
described in section 4.1.
8.16 PRESSURE/TEMPERATURE GAUGE
– Remove the casing front panel as described in section 5.1.
– Isolate the boiler from the system.
– Drain the appliance through the drain point (14 fig. 2).
– Remove the circlip securing the pressure sensor to the
hydraulic group and pull out the sensor.
– Remove the fixing spring of the thermometer bulb from
the C.H. flow pipe.
– Squeeze the gauge to depress the retaining clips, then
ease the gauge forwards.
– Reassemble in reverse order.
Refill and re-commission the system as described in section 4.1.
8.17 SAFETY VALVE
– Remove the casing front panel as described in section 5.1.
– Isolate the boiler from the system.
– Drain the appliance through the drain point (14 fig. 2).
– Remove the circlip securing the valve to the hydraulic
group and remove the valve.
– Fit the new safety valve and re-assemble in reverse order.
Refill and re-commission the system as described in section 4.1.
8.18 AUTOMATIC AIR VENT
– Remove the casing front panel as described in section 5.1.
– Isolate the boiler from the system.
– Drain the appliance through the drain point (14 fig. 2).
– Remove the circlip securing the automatic air vent to the
hydraulic group.
– Fit the new automatic air vent and re-assemble in reverse
order. Refill and re-commission the system as described
in section 4.1.
8.19 TIME CLOCK (IF FITTED)
– Remove the casing front panel as described in section 5.1.
–
Open the control panel protecting cover by removing the
four fixing screws.
– Pull off the electrical connections at the back of the clock.
– Remove the two screws securing the plastic frame of the
time clock to the facia panel.
– Remove the plastic frame and pull out the time clock.
– Re-assemble in reverse order and test the operation of
the new clock.
– Set it to the desired settings as described in section 4.3.
Page 26
24
1.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
1.3 OPERATING INSTRUCTIONS
1.4 MINIMUM CLEARANCES
1.5 ROUTINE SERVICING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
1.6 GENERAL INFORMATION
1.7 SAFETY
1.8 TIME CLOCKS (optional)
CONTENTS
User instructions
Page 27
25
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 prosecution. It is in your own interest, and that of safety, to ensure
that the law is complied with. It is essential that the appli-
ance is correctly earthed. An electricity supply of 240 V 50 Hz fused at 3 A is required. Read these instructions care-
fully before attempting to operate the appliance.
1.1 INTRODUCTION
The Sime “FORMAT 34E - 34I BF” family is a fully automatic,
wall mounted, room sealed, fan assisted range of combination boilers.
The appliance provides central heating as required and produces instantaneous hot water upon demand.
The heat output is automatically controlled by the fully modulating gas valve (within its pre-set limits), and there is user
adjustable potentiometer to control the temperature of central heating.
A pressure gauge is fitted and an overheat thermostat is
incorporated to protect against fault conditions.
1.3 OPERATING INSTRUCTIONS
1.3.1 To light the appliance (see fig. 24)
– 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 viewing 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.
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 automatically given to providing hot water when the demand
arises.
1.3.2 To turn the appliance off (see fig. 24)
– 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 MODEL “34I BF”
The following MINIMUM CLEARANCES must be available for
servicing the appliance:
OPERATING INSTRUCTIONS FOR THE USER
Fig. 24
A EC
F
B D
DHW
ISOLATION VALVE
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
"34 E" model
KEY
A Pressure gauge
B Time clock (optional)
C C.H. potentiometer
D Rotary switch
E Viewing window
F Viewing window
Page 28
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 registered person.
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 immediately, then turn it back to the previous position (see fig. 25).
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. 24) on the facia panel indicates the approximate 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 connected to the terminal in the plug which is marked with the
letter E or by the earth symbol - or coloured green and yellow; 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 terminal 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.
1.6.6 Cleaning
Use only a damp cloth and mild detergent to clean the appliance outer casing. DO NOT use abrasive cleaners.
1.7 SAFETY
It is essential that the instructions in this booklet are strictly 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.
EXTINGUISH ALL NAKED LIGHTS. CONTACT THE GAS
SUPPLIER IMMEDIATELY.
26
Fig. 25
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
Page 29
1.8 TIME CLOCK OPTIONAL (fig. 26)
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 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.
27
Fig. 26
MECHANICAL 24 hr VERSION
Slide blue tappets IN for OFF period
Mode selector switch
Slide blue tappets
OUT for ON period
Page 30
This Warranty is granted to you by Hunt Heating A.C.N. 000
013 927, in respect of your acquisition of a Sime Central
Heating Boiler within the Commonwealth of Australia. This
Warranty does not in any way affect your rights under any
Trade Practices Act, and is in addition to your implied legal
rights.
Provided that the installation of the boiler is in accordance
with the specifications provided to you or your licensed instal-
ler, the boiler is warranted by Hunt Heating against defects
caused by the manufacturers faulty materials and/or work-
manship, in respect to parts and labour, for a period of twelve
months commencing from the date of commissioning of the
boiler.
The Licensed Installer must complete the following informa-
tion. Failure to do so may cause the above Warranty to beco-
me null and void.
MODEL NO.: __________________________________________________________________________
SERIAL NO.: __________________________________________________________________________
GAS TYPE: __________________________________________________________________________
DATE OF INSTALLATION: __________________________________________________________________________
INSTALLER NAME & ADDRESS: __________________________________________________________________________
FOR WARRANTY AND SERVICE:
Ring: 9 558 7077
HUNT HEATING
10 Garden Boulevard
DINGLEY - VICTORIA - 3172
WARRANTY - SIME CENTRAL HEATING BOILERS
Page 31
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.
Page 32
Cod. 6272266 A - 05/ 09 - Documentation Dpt.
HUNT HEATING
HYDRONIC SYSTEMS (Australia) PTY. Ltd.
11 Fiveways Boulevard, Keysborough, Victoria 3173
Telephone 1300 00 1800 - Facsimile 9798 5133
www.huntheat.com.au
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