Worcester Bosch Danesmoor Utility 12/14 User guide

DANESMOOR UTILITY
12/14, 15/19, 20/25, 26/32
WORCESTER BOSCH
50/70, 70/90, 90/110
FLOOR STANDING OIL-FIRED
PRESSURE-JET BOILERS WHEN FITTED INSIDE
OUTDOOR PACK
INSTALLATION AND
SERVICING INSTRUCTIONS
IMPORTANT: Please discard all previous Installation and Servicing instructions.
Retain ONLY the Worcester Outdoor Pack Installation and Servicing
Instructions.
THESE INSTRUCTIONS ARE TO BE LEFT WITH THE APPLIANCE
This appliance must be installed and serviced by a competent person

1.1 General installation information and advice may be obtained
from the Oil Firing Technical Association for the Petroleum
Industry (OFTEC). Training courses are also offered by OFTEC,
leading to inclusion on their list of registered engineers.
1.2 The appliance should be installed by a competent person.
The person installing the appliance should be aware of the
Health and Safety at Work Act and take appropriate action to
ensure that the regulations are adhered to. In order to give
optimum efficiency and trouble free operation the appliance
should be commissioned by a qualified engineer.
1.3 The manufacturers notes must not be taken, in any way, as
overriding statutory obligations.
1.4 The compliance with a British Standard does not, of itself,
confer immunity from legal obligations. In particular the
installation of this appliance must be in accordance with the
relevant requirements of the following British Standards and
regulations in respect of the safe installation of equipment.
BS 5410: part 1: Code of practice for Oil Fired Boilers.
BS 799: part 5: Specification for Oil Storage Tanks.
BS 7593: Code of Practice for treatment of water in domestic hot
water central heating systems.
BS 5449: part 1: Specification for forced circulation hot water
central heating for domestic premises.
BS 5955: part 8: Specification for the installation of
thermoplastic pipes and associated fittings for use in domestic
hot and cold water services and heating systems.
BS 7291: Thermoplastic pipes and associated fittings for hot and cold
water for domestic purposes and heating installations in buildings.
BS 7074: part 1: Application, selection and installation of expansion
vessels and ancillary equipment for sealed water systems.
BS 7671: IEE Wiring Regulations, current edition.
The Building Regulations Part J and L1 England and Wales; Part F
Section III and Part J Scotland; Part L and Part F Northern Ireland.
Local water company bye-laws.
The Control of Pollution (Oil) Regulations.
1.5 To ensure that the installation will perform to the highest
standards, the system and components should conform to those
mentioned in the instructions.
The Benchmark initiative is the new code of practice to
encourage the correct installation, commissioning and servicing
of domestic central heating boilers and system equipment.
The 'Log-book' is a vital document that must be completed
by the installer at the time of installation. It confirms that the
boiler has been installed and commissioned according to the
manufacturers instructions.
Without the completion of the Log-book, manufacturers may refuse
to respond to a call-out from a householder, who will be advised
that he or she must call back the installer, who has not fulfilled his
obligations to record the information required by the initiative.
It is important that:
The services and the system are properly flushed as specified.
The User is clearly instructed on the correct operation of the appliance.
The benefits of regular servicing are explained - to maintain the
efficiency and extend the life of the appliance.
NOTE: When installing the Danesmoor Utility or Worcester Bosch
boiler inside the Outdoor Pack only use the Outdoor Pack
installation and service instructions, Part Number 8 716 104 781.
Discard the Danesmoor Utility (Part No 8 716 104 437), Worcester
Bosch (Part No 8 716 8 716 104 438), and the RS short silencer
(Part No 8 716 104 861) installation and servicing instructions.
2.1 These instructions cover the Danesmoor Utility or Worcester
Bosch appliances when fitted inside the Outdoor Pack (Part Number
7 716 192 273), the RS short silencer (Part Number 7 716 190 002)
and flue terminal guard (Part Number 7 716 190 009).
2.2 The Worcester Danesmoor Utility appliances covered in these
instructions are conventional flued low level discharge appliances, which
have been designed to serve domestic central heating and hot water
requirements ranging from 12 kW to 32 kW. The boiler is factory set to
the mid-range output and can be altered, if necessary, by adjusting the
burner as specified in Tables 2 to 5. The 12/14, 15/19, 20/25 and 26/32
models are only suitable for use with 28 second Kerosene heating oil.
2.3 The Worcester Bosch appliances covered in these instructions are
conventional flued low level discharge appliances, which have been
designed to serve domestic central heating and hot water requirements
ranging from 51,000 Btu/h to 109,000 Btu/h. The boiler is factory set to
the mid-range output and can be altered, if necessary, by adjusting the
burner as specified in Tables 3 to 5. The 50/70, 70/90 and 90/110
models are only suitable for use with 28 second Kerosene heating oil.
2.4 The appliance is suitable for connection to fully pumped
conventional indirect hot water systems utilising an indirect double
feed cylinder. This appliance is not suitable for use on gravity systems.
2.5 The service engineer should always have access to the inside of
the property when servicing the appliance, to check for system faults
and reset/replace electrical safety devices. A service switch is provided
to allow the service engineer to isolate the boiler. See Section 10.
2.6 The electrical supply to the appliance should be fed via a
separate circuit breaker including earth leakage protection.
WARNING: This appliance is serviced and repaired externally.
External equipment operated at 230volts should not be
serviced or repaired under adverse weather conditions.
WARNING: This appliance should not be installed where there
is potential for excessive ground water coverage.
NOTE: It is a mandatory requirement of the building regulations
that only 28 second kerosene is used on low level discharge flues.
2.7 In the event of a lockout condition, the householder resets the
burner by completely isolating the appliance inside the property,
removing the Outdoor Pack front cover, the boiler front cover, and
pressing the lockout reset button on the burner.
2.8 An electrical service lead is fitted to the underside of the
external control box enabling the service engineer to use a light or
vacuum cleaner.
NOTE: Any electrical equipment used with this lead should be
protected by separate RCD safety unit.
NOTE: When installing the Danesmoor Utility or Worcester
Bosch in conjunction with the Outdoor Pack and RS Short
Silencer only use the Outdoor Pack installation and servicing
instructions. The instructions received with the boiler and the
RS short silencer should be discarded.
2. General Information
1. Installation Regulations
2
1. Installation Regulations ...........................................Page 2
2. General Information .................................................Page 2
3. Technical Data...........................................................Page 3
4. Siting the Appliance.................................................Page 7
5. Removal of the Cabinet............................................Page 7
6. Air Supply..................................................................Page 7
7. Flue System...............................................................Page 7
8. Oil Supply ..................................................................Page 9
9. Heating and Hot Water System...............................Page 11
10. Electrical ....................................................................Page 13
11. Installation ................................................................Page 15
12. Commissioning the Appliance ................................Page 22
13. Instructions to the User ...........................................Page 26
14. Routine Cleaning and Inspection............................Page 26
15. Short Parts List..........................................................Page 28
16. Fault Finding .............................................................Page 29
Contents

Model AB C D E FG
12/14 370 600 855 780 110 92 56
15/19 (50/70) 370 600 855 780 110 92 56
20/25 (70/90) 370 600 855 780 110 92 56
26/32 (90/110) 520 600 855 775 110 92 56
3
Table 1
3. Technical Data
Fig. 1. Principal Dimensions Of Boiler Fitted Within Outdoor Pack (All Dimensions are in millimetres)
A
CD
G
F
Flue centre
E
B
Front View Side View
3
Danesmoor Utility MODEL
Worcester Bosch MODEL
PO
IP RATING IP 45 IP 45 IP 45 IP 45
WER SUPPLY
HEATING FLOW
HEATING RETURN
HEIGHT (BOILER)
WIDTH (BOILER)
DEPTH (BOILER)
HEIGHT (OUTDOOR PACK)
WIDTH
DEPTH
FUEL LINE
FLUE REQUIREMENT
HEARTH TEMPERATURE
MAXIMUM STATIC HEAD
BOILER WEIGHT
OUTDOOR WEIGHT
PRIMARY WATER CAPACITY
BURNER
WATER SIDE RESISTANCE
10°C Difference
WATER SIDE RESISTANCE
20°C Difference
EXIT FLUE GAS
MASS FLOW
CONTROL THERMOSTAT
RANGE
CONTROL THERMOSTAT
DIFFERENTIAL
HIGH LIMIT THERMOSTAT
BREAK POINT
MANUAL RESET THERMOSTAT
BREAK POINT
FROST THERMOSTAT RANGE
12/14 15/19 20/25 26/32
SPECIFICATIONS
230V 50 Hz 230V 50 Hz 230V 50 Hz 230V 50 Hz
1 in. BSP 1 in. BSP 1 in. BSP 11 /4in. BSP
1 in. BSP 1 in. BSP 1 in. BSP 11 /4in. BSP
855 855 855 855
370 370 370 520
600 600 600 600
1
/4in. BSP 1 /4in. BSP 1 /4in. BSP 1 /4in. BSP
RS Short Silencer 7 716 190 002
20 litres (4.4 gal.) 20 litres (4.4 gal.) 23.5 litres (5.2 gal.) 29.1 litres (6.4 gal.)
94 Kg (207 lbs) 97 Kg (214 lbs) 107 Kg (236 lbs) 138 Kg (304 lbs)
5°C cut in to 10°C cut out
Electro Oil Electro Oil Electro Oil Electro Oil
Inter B9 A Inter B9 B Inter B11C Sterling 40
7 mbar 8 mbar 18 mbar 35 mbar
3 mbar 6 mbar 12 mbar 19 mbar
24 kg/hr 35 kg/hr 43 kg/hr 57 kg/hr
55°C minimum cut in to 82°C maximum cut out
5°C
100 + 0/ – 6°C
110 + 0/ – 6°C
/ 50/70 70/90 90/110
975
670
760
30m (98 ft. )
Below 100°C
36Kg (79lbs)
(OUTDOOR PACK)
(OUTDOOR PACK)
PACK
SEDBUK RATING* 85.3% 85.5% 85.3% 85.3%
( SEDBUK BAND C )
* The value is used in the UK Government Standard Assesment Procedure (SAP) for energy ratings for dwellings.

** NOTE: The flue gas temperature is measured in the gas sampling hole on the flue outlet plate. The probe should be inserted to a depth of 50mm and angled towards the flue outlet. The temperature measured is not an
absolute flue gas temperature and is for general guidance purposes only!
NOTE: The pump pressure given is for general guidance only as variations in nozzle output can be up to ± 15%. It is, therefore, essential that the air is adjusted to give the correct CO2value.
NOTE: The nozzle type used on 28 Sec. Kerosene outputs are nozzles calibrated specifically for use with 28 Sec. Kerosene which gives less variation in nozzle output than the standard 35 Sec. Gas Oil nozzles. However, if a 28
Sec. Kerosene nozzle is not available at servicing or commissioning it is appropriate to install a 35 Sec. Gas Oil nozzle providing the output, spray angle and pattern of the nozzle is the same as the 28 Sec. Kerosene nozzle (e.g.
0.75 80°EH may be replaced with a 0.75 80°H).
4
Fig. 2. Outdoor Pack Principal Dimensions. (All Dimensions are in millimetres)
28 Sec. Kerosene 0.40 60°ES 130 1.11 1.41 180 10 6.0 13.5 46,000 12 41,000
28 Sec. Kerosene 0.50 60°ES 100 1.30 1.64 195 11.5 7.0 15.5 53,000 14 48,000
NOMINAL BOILER RATING AT NORMAL OPERATING TEMPERATURE
Danesmoor Utility 12/14 Table 2. Electro Oil Inter B9A Burner (See Fig. 29)
Fuel Nozzle
Pump
Pressure
(p.s.i.)
Fuel Flow
Rate
Flue Gas
Temp.
(°C)**
%CO2
Approx.
Air
Setting
Appliance
Input
kW Btu/hr kW Btu/hr
Output
Kg/h l/h
28 Sec. Kerosene 0.50 60°ES 110 1.40 1.77 215 10.5 8.5 17 58,000 15 51,000
28 Sec. Kerosene 0.55 80°EH 115 1.59 2.01 225 10.5 8.75 19 65,000 17 58,000
28 Sec. Kerosene 0.60 60°ES 105 1.78 2.25 235 11.5 9.0 21.5 73,000 19 65,000
NOMINAL BOILER RATING AT NORMAL OPERATING TEMPERATURE
Danesmoor Utility 15/19 and Worcester Bosch 50/70 Table 3. Electro Oil Inter B9B Burner (See Fig. 30)
Fuel Nozzle
Pump
Pressure
(p.s.i.)
Fuel Flow
Rate
Flue Gas
Temp.
(°C)**
%CO2
Approx.
Air
Setting
Appliance
Input
kW Btu/hr kW Btu/hr
Output
Kg/h l/h
28 Sec. Kerosene 0.60 80°EH 130 1.87 2.37 190 11.0-11.5 5.5 22.5 77,000 20 68,000
28 Sec. Kerosene 0.75 80°EH 105 2.10 2.66 205 11.5-12.0 6.0 25 86,000 22.5 77,000
28 Sec. Kerosene 0.75 80°EH 130 2.34 2.96 220 12.0-12.5 6.5 28 96,000 25 85,000
NOMINAL BOILER RATING AT NORMAL OPERATING TEMPERATURE
Danesmoor Utility 20/25 and Worcester Bosch 70/90 Table 4. Electro Oil Inter B11C Burner (See Fig. 31)
Fuel Nozzle
Pump
Pressure
(p.s.i.)
Fuel Flow
Rate
Flue Gas
Temp.
(°C)**
%CO2
Approx.
Air
Setting
Appliance
Input
kW Btu/hr kW Btu/hr
Output
Kg/h l/h
28 Sec. Kerosene 0.85 80°EH 110 2.36 2.99 225 11.0-11.5 11 28.5 97,000 26 89,000
28 Sec. Kerosene 0.85 80°EH 130 2.66 3.37 240 11.0-11.5 12 32 109,000 29 99,000
28 Sec. Kerosene 1.00 80°EH 130 2.95 3.74 245 11.5-12.0 16 35.5 121,000 32 109,000
NOMINAL BOILER RATING AT NORMAL OPERATING TEMPERATURE
Danesmoor Utility 26/32 and Worcester Bosch 90/110 Table 5. Electro Oil Sterling 40 Burner (See Fig. 32)
Fuel Nozzle
Pump
Pressure
(p.s.i.)
Fuel Flow
Rate
Flue Gas
Temp.
(°C)**
%CO2
Approx.
Air
Setting
Appliance
Input
kW Btu/hr kW Btu/hr
Output
Kg/h l/h
975
670 760
X= 806 (26/32 and 90/110) X= 811 (on all other models)
Flue terminal
Flue terminal
guard
X
740
238
142
148
68
212
267
798

5
Fig.3. Conventional Flue Appliance (CF/LLD). Fitted within Outdoor Conversion Kit.
Burner locking
screw
Burner seal
gasket
Side panel
locking screw (A)
Burner
Manual reset
overheat
thermostat
Strain relief
bush
Burner plug-in
connector
High limit thermostat
Fire valve clip
Side panel
Top panel
Front panel
Thermostat
knob
Manual reset over-
heat thermostat
phial
Automatic reset high
limit thermostat phial
Control thermostat
phial
Split pin
Control Box Assembly

6
Fig.4. Outdoor Pack.
Top panel bracket
Open side panel
Brace
Handlewheel
Front panel
Top panel
Silencer blanking plate
Silencer bracket
Gasket
Clamp
Outdoor
control box
Rear panel
Rear panel
bracket
Water plate
(A) Water plate
(B)
Closed side panel
Fire valve plate
Oil plate
M8 nut
Rail
For fixing the base to the
hard standing use the 4
holes provided in the base.
Template
Front panel locating tabs
Rear panel
locating tabs
Base
Frost
thermostat
phial
Clamping collar

4.1 The appliance is only suitable for external installation.
WARNING: This appliance should not be installed where
there is potential for excessive ground water.
4.2 The appliance should be positioned and fastened on a non-
combustible solid base and care should be taken to ensure that
the appliance is level.
4.3 When siting the appliance the flue terminal must be
positioned such that the flue terminal can safely discharge the
flue gases as described in Section 7.
4.4 The following clearances must be left to allow access for
installation and servicing:
(a) Above - 600mm
(b) Rear (from flue terminal) see section 7 and figure 5
(c) In front - 600mm
(d) Right or left hand side against wall – 10mm
(e) Right or left hand side not against the wall of the
property – 600mm
See Figs. 3 and 4.
Outdoor Pack Removal
For servicing of the appliance the cabinet should be removed as
follows:
5.1 Remove the Outdoor Pack front cover by undoing the two
handwheels on the door and padlock if fitted. Pull forward at the
top of the panel and lift the front cover to release from the
locating tabs on the base
5.2 Remove the Outdoor Pack top cover by removing the two
fixings and push back to release from the locating strip at the
back of rear panel.
Boiler Cabinet Removal
For installation and servicing of the boiler the cabinet should be
removed as follows:
5.3 Remove the cabinet top panel by lifting squarely upwards to
release the four ball stud connections.
5.4 Remove the front panel by pulling the bottom of the panel
forwards to release the lower ball studs and then repeat the
procedure at the top end to release the upper ones. Take care
not to pull the bottom end too far forwards as this may cause
damage to the spring clips.
5.5 The side panels are removed by firstly following procedures
5.3 to 5.4 as described above, then remove screw (A) from the
side panel base and the three screws located in the upper flange
of each side panel. Ease the panel clear of the electrical control
box and slide forwards to release from the locating lugs on the
base plate.
5.6 To remove the outdoor control box, which is positioned
below the control, box remove the four fixings and pull down.
5.7 The control box can be removed by undoing the four screws
in the front facia cover and then removing the wing nut on the
underside of the control box. The thermostat phials should be
carefully removed from the phial pockets and the control box
placed in a safe place taking care not to kink the thermostat
capillary tubes.
The appliance is for external installation only and does not
require a separate vent for combustion air.
.
7.1 The appliance must be installed in conjunction with the RS
Short Silencer kit, this is available from Worcester Heat Systems,
Part Number 7 716 190 002. For details on the installation pro-
cedure refer to Section 11.4 and 11.5 of these installation and
servicing instructions.
7.2 Siting of the flue outlet terminal
1. The flue outlet terminal must be located in a suitable position,
as shown in Fig.5, such that the products of combustion can be
freely dispersed without the possibility of gases entering the
dwelling or that of a neighbouring dwelling.
2. Discharge of flue gases into car ports or narrow passage ways
is not recommended.
3. The terminal must not cause an obstruction or the discharge
cause a nuisance as a result of either flue gases or terminal
noise.
4. If the terminal is fitted within 600mm of a plastic/painted gut-
ter or painted eaves an aluminium or stainless steel shield at
least 750mm long should be fitted to protect the surface.
5. A flue terminal guard should be fitted. A flue terminal is avail-
able from Worcester Heat Systems, Part Number 7 716 190 007.
For details on the installation procedure refer to Section 11.6.
7. Flue System
5. Removal Of The Cabinet
4. Siting The Appliance
7
6. Air Supply

8
Flue outlet Terminal Position Minimum Distance (mm)
A Directly below an opening, air brick, window, etc...................................... 600
B Horizontally to an opening, air brick, window, etc..................................... 600
C Below a gutter, sanitary pipe or eaves if combustible material protected 75
D Below a gutter, sanitary pipe, eaves or balcony without protection....... 600
E From vertical sanitary pipework.................................................................... 300
F From an internal or external corner or boundry along side terminal...... 300
G Above ground or balcony level...................................................................... 300
H From a surface or boundry facing the terminal.......................................... 600
J From a terminal facing the terminal............................................................. 1200
K Vertically from a terminal on the same wall............................................... 1500
L Horizontally from a terminal on the same wall.......................................... 750
NOTE: Flue outlet is shown in Fig. 2.
L
F
F
K
G
A
E
B
C.D.
J
H
F
Boundry
Boundry
NOTE: The dimensions given are for general guidance only. Other surrounding buildings or objects may affect the clearance of
combustion products. An alternative flue terminal position should be sought when there is any possibility of a nuisance being
caused by inadequate dispersal of flue products.
Terminals should be positioned so as to avoid products of combustion entering into buildings.
Fig.5. Flue outlet terminating positions for oil-fired appliances
Window
Flue outlet
Terminal

(See Figs. 6, 7 and 11).
8.1 Plastic or steel tanks should be installed to BS5410.
A steel tank should also conform to BS799: part 5 and be arranged
with a slope of 1 in 24 away from the outlet valve with a sludge cock
at its lower end.
8.2 Do not use galvanised steel tanks or pipework for the oil supply
system.
8.3 Do not use soldered joints on the oil supply pipework as this
could cause a hazard in the case of a fire.
8.4 The burners on all appliances are supplied so as to be
connected to a single pipe gravity feed system. Details of how to
convert the burners to a double-pipe sub-gravity feed system are
shown in Fig. 6.
8.5 Oil Supply System
(a) Single Pipe System
If a single pipe system is employed then the tank must be positioned
such that the oil level does not exceed 4 metres above the level of
the burner oil pump and in addition the oil level must be at least 0.3
metres above the level of the oil pump. Should it prove impossible to
site the tank below the 4 metres maximum oil level a head breaking
device must be installed between the tank and the burner.
(b) Double Pipe System
If a double pipe system is used then the maximum suction
height allowable is 3.5 metres.
(c) Single Pipe Suction Lift with De-aerator
If a single pipe suction lift with a de-aerator is used, the oil tank
must be positioned below the burner. An inlet and return loop
should be created between the de-aerator and oil pump. The oil
pump should be connected as for a double pipe system. Details of
how to convert to a double pipe system are shown in Fig. 6.
Oil inlet and return flexible hoses should be connected to the oil
pump inlet and return ports.
Table 8 is a general guide to determine the maximum allowable
pipe run when using a de-aerator.
Table 8 does not override the de-aerators manufacturers instruc-
tions and should only be used in conjunction with the manufac-
turers instructions.
If a non-return valve is not incorporated within the de-aerator
unit, a non-return valve should be fitted in the oil line between
the oil tank and the de-aerator.
NOTE: If a de-aerator is used it should be fitted externally to the building.
8.6 Oil Supply Pipework
a) The oil supply pipe diameter can be determined using Tables 6, 7
and 8 depending on whether a single or double pipe system or sin-
gle pipe system with de-aerator is being installed. Selection of the
correct pipe diameter will depend on the position of the oil storage
tank relative to the burner and the length of the pipe run.
b) The oil supply pipe should be laid as level as possible to avoid
air pockets and unnecessary friction losses.
c) Oil supply pipework should be made in rigid pipework firmly
attached to the wall or other secure structural element.
d) The following components should be fitted in the fuel line
between the storage tank and burner:
1. A manual isolating valve installed as close to the tank as possible.
2. A fire valve in accordance with BS5410 as shown in Fig. 6. The fire
valve should be fitted externally with a fire detection element located
within the boiler case. Use of a capillary type valve will allow a neat
and simple installation. A suitable valve is the KBB C90 manufactured
by Teddington Controls Limited. A spring clip has been provided
behind the electrical panel, shown in Fig. 3, to allow a fire valve ele-
ment to be mounted. Alternatively a fusible link or electrical system
may be used. Under no circumstances should a combination isolat-
ing/fire valve be used as the sole fire protection device.
NOTE: The fire valve should be positioned at least 1 metre away
from the Outdoor Pack.
3. An oil filter should be fitted close to the oil storage tank. If
there is doubt about the internal oil line condition, a further filter
should be fitted near the boiler.
9
Fig. 6. Oil Pump.
A. Danfoss BFP 41.
C. Suntec AS47C Oil Pump.
Cartridge filter
12
3
4
4a
5
6
1
2
3
4
5
6A
1 INLET
2 RETURN
3 BLEED AND PRESSURE
GAUGE PORT
4VACUUM GAUGE PORT
5PRESSURE ADJUSTMENT
6NOZZLE OUTLET
To convert to a double pipe sys-
tem, remove plug 4a and insert
the grub screw provided into the
threaded hole. Connect flow and
return pipes to (1) and (2).
To convert to a double pipe sys-
tem: Remove the pump front
cover, remove the changeover
screw (A) nearest to ports 1 and
2, and the horseshoe washer
underneath. Replace the
changeover screw back into the
threaded hole. Connect the flow
and return pipes to 1 and 2.
Note: When removing the pump
front cover ensure that a suitable
receptacle is placed below the
pump to catch the oil residue.
To convert to a double pipe sys-
tem, remove the return port plug
(2) and insert the grub screw (A)
provided into the threaded hole
(B). Connect flow and return pipes
to (1) and (2).
1
2
3
3
4
5
B
A
8. Oil Supply
TABLE 6 Single Pipe Gravity Feed System
MAXIMUM ALLOWABLE PIPE RUN
HEAD (metres) (metres)
8 mm inside dia. pipe 10 mm inside dia. pipe
(10 mm O.D. copper) (12 mm O.D. copper)
0.5 12 30
1.0 25 69
1.5 37 91
2.0 49 100
2.5 62 100
3.0 74 100
3.4 87 100
4.0 99 100
TABLE 7 Double Pipe Sub-Gravity Feed System
MAXIMUM ALLOWABLE PIPE RUN
HEAD (metres) (metres)
8 mm inside dia. pipe 10 mm inside dia. pipe
(10 mm O.D. copper) (12 mm O.D. copper)
050 100
0.5 44 100
1.0 38 95
1.5 32 80
2.0 26 66
2.5 20 51
3.0 14 37
3.5 8 22
B. Danfoss BFP 11 Oil Pump.

MAXIMUM ALLOWABLE PIPE RUN FROM TANK TO DE-AERATOR (metres)
Fuel
Flowrate 2.5 (kg/h) 5.0 (kg/h) 10.0 (kg/h) 10.0 (kg/h)
HEAD
(metres) 6 mm inside dia. pipe 8 mm inside dia. pipe
(8 mm O.D. copper) (10 mm O.D. copper)
0 100 55 26 100
0.5 95 45 23 100
1.0 80 40 20 90
1.5 70 35 17 75
2.0 60 30 14 65
2.5 45 25 11 50
3.0 35 15 8 35
3.5 25 10 5 20
10
TABLE 8 Single Pipe Suction Lift with De-aerator
Fig. 6. Oil Supply.
(a) Single pipe system
Oil tank
Oil tank
H = 4 m (13 ft) maximum
Fire valve to
BS 5410
Fire valve to
BS 5410
Isolating
valve
Isolating
valve
Fire detection element
Filter
Burner
Burner
(b) Double pipe system.
Non return
valve
Non return
valve
Fire detection
element
Isolating
valve
Oil tank
(c) Single pipe lift system with de-aerator.
Fire valve to
BS 5410
H = 3.5 m (11.5 ft) maximum
Burner
Fire detection
element
De-aerator
H = 3.5 m (11.5 ft) maximum
H = 0.3 m (1 ft) minimum
Paper element
oil filter
Isolating
valve
Filter
Filter
Isolating
valve
Isolating
valve
Full base
(for plastic tanks)
Full base
(for plastic tanks)
Full base
(for plastic tanks) 1m (3ft) minimum from Fire Valve to Outdoor Pack
1m (3ft) minimum from Fire Valve to Outdoor Pack
Isolating
valve
Maximum oil level
1m (3ft) minimum from Fire Valve to Outdoor Pack
150mm
Isolating
valve

11
The heating and hot water system must be provided in accor-
dance with the current Building Regulations.
9.1 The appliance is suitable for connection to fully pumped
conventional indirect hot water systems utilising an indirect
double feed cylinder. This appliance is not suitable for use on
gravity systems.
9.2 The flow and return sockets are located at the rear of the
appliance, two at high level (flow) and two at low level (return).
Connection of the flow and return sockets must be made on the
same side of the boiler depending on the position of the boiler
within the Outdoor Pack.
9.3 On new installations it is recommended a room thermostat
or programmable room thermostat is used in the main zone and
thermostatic radiator valves are used in further heating zones.
On existing systems where a room thermostat is already fitted it
is recommended to fit thermostatic radiator valves at least in the
sleeping zones.
A automatic system bypass should be fitted on heating systems
when all of the radiators are fitted with thermostatic radiator valves.
9.4 The pressure jet burner fitted to the appliance has full
automatic control and hence there is no requirement for heat
leak radiators.
9.5 The appliance is suitable for connection to open vent or
sealed primary systems.
9.6 Any unused boiler tappings should be plugged prior to
filling. It should be noted that the flow tapping on the front of the
boiler requires plugging.
9.7 Drain cocks should be fitted on the lowest points on the
system to allow draining of the appliance and system.
9.8 The primary system should be flushed and treated in
accordance with the recommendations of BS 7593: before
the system is handed over to the user.
9.9 The pump should be set in accordance with the heating
load requirements to give a flow and return differential
temperature of 11°C under full load conditions.
NOTE: Exposed pipework should be properly insulated to
protect against frost damage.
Open Vent Primary System (See Fig. 8).
The following points are for guidance only. The system installation
should be carried out in accordance with BS 5449: Part 1.
1. System Pipework
The first metre of pipework from all appliance connections must be
in copper; afterwards copper or plastic pipe can be used. The
plastic pipe must be manufactued to BS 7291 and installed to BS
5955 part 8. It is recommended to protect the system components
the plastic pipe specified must be resistant to the ingress of oxygen.
2. Feed and Expansion System
The feed and expansion pipes must rise continuously from the
appliance and must be of the minimum diameter shown in Fig. 8.
The cistern must be arranged to provide a minimum static head of
1 metre above the top of the highest point in the heating circuit.
3. Filling and Venting
Air in the appliance is expelled through the vent pipe or
dissipated into the system. Manual air vents should be fitted at
any high points in the system.
Sealed Primary System (See Figs. 9 and 10).
The appliance is supplied with a manual reset high limit thermostat
and may therefore be fitted to a sealed heating system.
1. System Pipework
Copper pipework must be used when installing the appliance on
a sealed system.
2. General
The system should be installed in compliance with
therequirements of BS5449: Part 1. The boiler must be fitted
with a spring loaded safety valve set to operate at 3 bar (45 psi)
and the pipe connections made throughout the system must be
capable of sustaining a pressure of up to 3 bar.
The following is a list of major items, which must be fitted to a
sealed system:
1. Safety valve - 3 bar
2. Pressure gauge - 0 to 4 bar.
3. Expansion vessel
4. Automatic air vent.
9. Heating And Hot Water System
Primary
cold feed
(15mm min.)
Heating vent
(22mm min.)
Fig. 8. Typical fully pumped open vent system (Honeywell ‘Y’ plan).
Feed and
Vent Cistern
Diverting
valve
Pump Radiator
S.H. – Minimum static head 1m (3ft)
measured from the highest point in the
heating system (top surface of the appliance
or highest point in the heating system) to the
water level in the feed and expansion tank
N.B. A drain cock should be
installed at the lowest point of
the heating circuit
Domestic hot
water cylinder
S.H.
S.H.
150mm max
Boiler
Automatic bypass valve to be fitted
where thermostatic radiator valves
are fitted on all radiators

12
Automatic
air vent
Fig. 9. Typical fully pumped sealed system (Honeywell ‘Y’ plan).
Expansion
Vessel
Diverting
valve
Boiler Pump Radiator
N.B. A drain cock should be
installed at the lowest point of
the heating circuit
Domestic hot
water
cylinder
Pressure
gauge
Safety valve
To system filling device (see Fig.10)
Boiler
Fig. 10. System filling and make-up
Heating
return
Non return
valve
Stop
cock
Auto air
vent
Fill point.
Heating return
30mm (12in) min.
above highest
point of the system
Make up
vessel
METHOD 1 METHOD 2
Automatic bypass valve to be fitted
where thermostatic radiator valves
are fitted on all radiators

(See Figs. 11 to 13).
10.1 The wiring between the appliance and the electrical supply
shall comply with current IEE Wiring Regulations (and any local
regulations which apply) for fixed wiring to a stationary appliance.
The method of connection must allow complete isolation of the
appliance and the supply to the boiler must be the only electrical
supply to the system. This ensures the safety of a single fused
supply.
NOTE: The appliance provides a permanent external electrical
supply for servicing and should therefore be fed via a circuit
breaker including earth leakage protection.
10.2 To gain access to the electrical terminal strip.
1. Isolate the mains electrical supply from within the
property
2. Remove the Outdoor Pack front cover by undoing the two
handwheels on the door and padlock if fitted. Pull forwards
at the top of the panel and lift the front cover to release
from the locating tabs on the base.
3. Remove the boiler front panel by pulling forwards to
release the ball studs.
4. Pull the thermostat control knob forwards to remove
from its spindle.
5. Undo the facia retaining screws and remove the plate.
10.3 Mains Wiring
Mains supply - 230 V AC ~ 50 Hz 5A External Fuse to BS1362.
SWITCHED LIVE - Black, NEUTRAL - Blue, EARTH - Green/Yellow,
PERMANENT LIVE-Brown
Mains Cable: 0.75mm2 (24 x 0.20mm) to BS 6500 Table 16.
The supply to the boiler must be the only electrical supply to the
system. This ensures the safety of a single fused supply.
The mains supply four core cable should be connected into the
terminals marked Perm L (Permanent Live), Switch L (Switched
Live), N (Neutral) and E (Earth) on the outdoor control box
terminal strip and securely held in the cable clamp located in the
left-hand side of the outdoor control box.
To secure the cable, remove the clamp retaining screws and lift its
top section up to allow the cable to be fed through. With the cable
in position refit the two screws and fully tighten to grip the cable.
Feed the cable between the side panel and the boiler insulation
jacket to the back of the boiler. Avoid any hot surface and route
through the open/close bush provided on the open side panel of
the Outdoor Pack. Once the cable is outside the Outdoor Pack it
should be protected by conduit until inside the property.
The mains supply three core cable from the Outdoor Pack
control box should be connected into the terminals marked L
(Live), N (Neutral) and E (Earth) on the boiler terminal strip and
securely held in the cable clamp located in the right-hand side of
the electrical tray base. To secure the cable, remove the clamp
retaining screw and pull its inner body out to allow the cable to
be fed through. With the cable in position refit the screw and
fully tighten to grip the cable. The cable clamp on the
Danesmoor Utility (12/14, 15/19 and 20/25) and the Worcester
Bosch (50/70 and 70/90) should be moved to the alternative
position on the right hand side of the boiler electrical control box
The appliance must be earthed.
10.4 Programmer
A time clock or programmer may be added to the control
system. A two channel programmer will allow independent
control of the central heating and hot water.
NOTE: Under no circumstances should the timer be connected to
a separate electrical supply. Safety is assured from a single fused
supply to the boiler.
10.5 Safety Check
In the event of an electrical fault after the installation of the
appliance, the electrical system shall be checked for short
circuits, fuse failure or incorrect polarity of connections.
10.6 Pre-wired Remote Y Plan or S Plan System
(See Fig.13).
If the system is fully pre-wired at a junction box remotely from
the boiler it can be connected to the boiler. The diagram shows-
connection details of two popular proprietary systems
(Honeywell and Invensys), for these and other systems from
other manufacturers always use the boiler instructions in con-
junction with the system instructions..
10.7 Frost Protection
The appliance is supplied with a frost thermostat with the phial
positioned within the boiler casing, this protects the boiler only.
For full frost protection of the property and/or system a frost
thermostat should be fitted so that both the boiler and the
circulating pump circuits are energised under frost
conditions.
Outdoor Pack control box (See Fig. 3)
A service switch has been provided to allow the service engineer
to service the appliance from outside the property (See Fig.11) .
The engineer should have access to the property to set the
heating system controls to give a central heating demand so
that heat generated during the burner testing can be dissipated.
The switch settings are:
'Run' Mode -The boiler is controlled by the programmer. There
is power to the 3-pin trailing socket allowing the use of a light in
low light conditions.
'Service' Mode- There is no power to the boiler but there is
power to the 3-pin trailing socket allowing the use of a light or
vacuum cleaner for servicing purposes.
NOTE: To isolate mains supply to the appliance (including the
Outdoor Pack control box) switch off the supply inside the
property
After serving the appliance the Service engineer must leave the
appliance in the 'run' mode.
10. Electrical
13
Fig. 11. Service Switch Positions
Service Switch
in
'Run'
Mode
Service Switch
in
'Service'
Mode
NOTE: ALWAYS SET THE SWITCH TO 'RUN' AFTER SERVICING

14
Fig. 12. Wiring Diagram (Standard).
Frost thermostat
Green/Yellow
Blue
Brown
Green/Yellow
Green/Yellow
L
12 34 5 67 8
E
9
Brown
Brown
Brown
Green/Yellow
Green/Yellow
Control
thermostat
Mains supply
230V/ 50Hz
5A external fuse
Satronic burner control box
Manual reset
thermostat
(C )
N
High limit
thermostat
Trailing
socket
Outdoor Pack control box
Brown
Blue
Black
L
Switch Perm
Blue
Blue
(1 )
Plug in connector
N L
Brown Brown
Boiler Control Box
1
L
2
N
3
Service
switch
Mains Wiring 230V 50Hz (5 amp fuse)
Tank Stat Room Stat System Water Valves
Pump
External Timer
Fig. 13. Pre-wired Remote ‘Y’ Plan or ‘S’ Plan.
10 WAY JUNCTION BOX
NOTE: If a frost thermostat is required it
can be wired to the remote junction box.
NOTE: The 10 way junction box must be
a terminal block type and current rated
to at least 5 amps.
Remote Pre-wired
Junction Box
OUTSIDE OUTDOOR PACK
INSIDE OUTDOOR PACK
Switched
Live Neutral Earth
Outdoor Pack
Connector Block
Permanent
Live

The outdoor appliance is installed and serviced externally to the
property, but the engineer must have access to inside of the
property when servicing the appliance.
WARNING: This appliance is serviced and repaired externally.
External equipment operated at 230volts should not be
serviced or repaired under adverse weather conditions.
WARNING: This appliance should not be installed where
there is potential for excessive ground water coverage.
NOTE: When installing the Danesmoor Utility or Worcester
Bosch boilers inside the Outdoor Pack only use the Outdoor Pack
instructions, Part Number 8 716 104 871. Discard the
Danesmoor Utility instructions (8 716 104 437) or Worcester
Bosch instructions (8 716 104 438) and the RS short silencer kit
installation instructions, (8 716 104 861).
11.1 After unpacking the boiler it is recommended that all cabinet
panels are removed, as described in Section 5, and stored in a safe
place to avoid damage during installation and allow easy inspection
for any leaks after the system has been filled.
11.2 Remove the burner as described below and store in a safe
place until the appliance is ready for commissioning.
1. Remove the burner plug-in connector by removing the
electrical facia and pulling the three-pin connector free. Slide the
locating bush from the electrical box.
2. Remove the burner from the boiler by slackening the two M6
retaining screws located in the burner housing ring and pulling
the burner clear. This will require the use of a 5mm allen key.
11.3 Outdoor Pack installation.
Before the appliance is fitted to the heating system
flush the system and mains water supply.
1. Carefully place the base in the required position on a flat level
hard standing ensuring the correct orientation. A template is
fastened to the base this indicates the front of the Pack.
NOTE: Carefully place the base in position do not scrape across
the hardstanding.
NOTE: Ensure there is a minimum distance of 30mm from the edge
of the base to the wall of the property to allow assembly of the pack.
2. Fasten the base to the hard standing using four holes provided.
Care should be taken to ensure that the base is level (see Fig.4).
3. Slide the boiler onto the baseplate from the side being careful
not to damage the template or front and rear panel locating tabs.
4. There are two possible positions for each size of boiler. The holes
on the baseplate of the boiler should be lined up with the holes on
the rail of the Outdoor Pack base (see table 9 and Fig.4, 14 and 15).
5. To aid positioning of the boiler insert the M8 bolt provided into the
boiler baseplate and rail of the Outdoor Pack base. Adjust the boiler
to the correct position so the two holes on the boiler baseplate line
up with the two holes on the Outdoor Pack base.
6. The Outdoor Pack can accommodate various pipework
options which include:
(a) 22mm or 28mm pipework.
(b) Flow pipe exiting from the top and the return pipe from
the bottom of the open side panel
(c) Flow and return side panel exiting from the top of the
open side panel.
7. For ease of installation fix the relevant fittings to the boiler
and plug any unused sockets.
8. Hold the open side panel (with the pipework exit holes) on the
side, which the pipework will be protruding from the boiler.
9. Using the self tapping screws provided screw the pipework
water plates into there required position depending on the
pipework configuration required (see Fig. 16). These plates must
be fitted on the inside of the panel.
10. Using the water plates provided
blank off the remaining pipework
options using two of the screws
provided.
11. Fasten the brace to the open side
panel using two of the screws provided
(see Fig.17).
12. Position and fasten the closed side panel to the brace using two
of the screws provided (see Fig.17).
13. Fasten the side panels to the base using the self tapping
screws provided. Only fasten the side panel to the side using one
fixing at the rear and one at the front (see Fig.17).
11. Installation
Boiler Marking on Boiler Position Connection of Pipework See
Template inside the Outdoor Pack and Open side panel position Figure
12 to 25 A Left hand side Right hand side 14
(50 to 90)
12 to 25 B Right hand side Left hand side 15
(50 to 90)
26 to 32 C Left hand side Right hand side 14
(90 to 110)
26 to 32 D Right hand side Left hand side 15
(90 to110)
15
Table 9
Outdoor
Casing
Closed Side
Panel
Template
Position
A or C
(see table 9)
Front of
Boiler
Open
Side
Panel
Outdoor
Casing
Closed Side
Panel
Template
Position
B or D
(see table 9)
Open
Side
Panel
Front of
Boiler
Boiler positioned on the left hand side to allow the
pipework to exit on the right hand side.
Boiler positioned on the right hand side to allow the
pipework to exit on the left hand side.
Fig. 14. Boiler Position for Pipework Exiting
on the Right Hand Side.
Fig. 15. Boiler Position for Pipework Exiting
on the Left Hand Side.

16
Fig.16. Water Plate Positions. (Panel viewed from inside)
Top of Open Side Panel
For 12-25 (50-90)
models use the bottom
holes to fasten
N.B. The plates
should be
fastened on the
inside of the open
side panel.
Water plate (A)
Electrical cable entry
N.B. Ensure the
open/close bush is in
position.
For all models use the
top holes to fasten
Water plate (B)
For 26/32 (90/110)
models use the top
holes to fasten
N.B. In this installation the water plates are positioned using the 22mm option with
the pipes exiting in line with the boiler sockets and the pipe work is shown exiting
from the left hand side.

17
Fig.17. Assembly of the Base/Side/Rear Panels.
Open side panel
Brace
Rear panel
Closed side panel
Base
Template

14. Check the boiler sockets line up with the water plate holes in
the open side panel and make any adjustments required.
15. If positioning the Outdoor Pack next to the wall of the
property proceed as follows; if positioning away from the property
go to 21.
16. Mark the hole centres on the wall of the property for the
flow and return pipes and electrical power supply.
17. Remove the boiler and side panels attached to the brace
from the base taking care not to damage the panels.
18. Drill the required holes through the wall of the property for
the flow and return and the electrical power supply.
19. Reassemble the boiler and side panels/brace and fasten to
the base plate using the self tapping screws provided.
20. Check the boiler sockets line up with the hole positions in
the open side panels and with the wall of the property.
21. Plumb the boiler into the heating system.
22. Fasten the oil pipe plates to the rear panel. The options are
single pipe 10mm and 12mm, two pipe 10mm and 12mm and
fully blanked off. Choose the option required and screw the
remaining oil pipe plate to the rear panel in the blanked off
option (see Fig. 4, 18 and 19).
23. Insert the fire valve phial through the rear panel and clip the
phial to the fire valve clip on the boiler electrical control box.
Fasten the fire valve blanking plate to the rear panel making
sure the capillary is not damaged (see Fig. 4,18 and 20).
24. Fasten the remaining blanking plates to the rear panel in the
closed position to prevent water ingress.
25. Locate the rear panel in position ensuring the rear slots are
located with the tabs on the base and fasten to the side panels
using to the two self tapping screws provided (see Fig.17).
26. Fasten the rear panel bracket strip to the rear panel and fully
tighten (see Fig.18)
27. Fasten the top panel bracket to the top panel and fully
tighten with two of the screws provided (See Fig.21)
11.4 Flue Terminal Installation
Install the appliance flue system as described in Section 7.
NOTE: Only use the RS short silencer, Part Number 7 716 190 002
1. Undo the three screws holding the flue spigot and gasket.
2. Undo the three nuts holding the rear flue blanking plate in position.
3. Remove the blanking plate and gasket.
4. Press out and discard the central portion of the gasket.
5. Position the following components onto the boiler flue outlet plate
in the following order: gasket, silencer bracket, gasket and clamping
collar and secure with the three nuts/washers as shown in Fig.22.
6. Fit the locking band by sliding over the clamping collar
ensuring that the screw head is pointing upwards to allow easy
access when tightening. Tighten the locking band screw
sufficiently to prevent it slipping out of position. Do not
overtighten at this stage as this will make it difficult to insert the
flue terminal.
7. Fasten the rear silencer outlet plate to the inside of the rear
panel using the four screws provided to the desired position
checking that the clamping collar is central to the exit of the
silencer outlet plate, do not tighten as shown in Fig.18.
11.5 Mount the terminal
1. Place a fillet of fire cement or silicone sealant around the
inside of the clamping collar (see Fig.23).
2. Push the terminal through the hole in the rear panel. Ensure
the terminal is the correct way up such that the louvers are
pointing downwards and the drain holes are on the underside.
3. Insert the terminal spigot into the clamping collar.
4. Fasten the flue terminal to the silencer bracket using the four
No.6 self tapping screws provided within the RS short silencer kit.
5. Fully tighten the clamping collar.
6. Smooth the fire cement/silicone sealant around the inside of
the clamping collar to form a good seal and remove any surplus.
7. Check the insulation jacket on the rear of the boiler does not
block the air inlet channels below the flue terminal. There should
be at least 10mm clearance between the bottom of the terminal
and the insulation jacket. If there is not sufficient clearance cut
around the insulation jacket ensuring 10mm clearance.
8. Blank the top flue hole using the blanking disc as shown in Fig.24.
9. Fully tighten the flue silencer outlet plate to the rear panel.
10. Place a fillet of silicone sealant around the flue terminal to
prevent water entering the rear panel (see Fig.26).
11.6 Flue Terminal Guard Installation
1. Attach the Outdoor Pack top panel to the Outdoor Pack
ensuring the rear panel bracket locks the the rear of the top
panel in position as shown in Fig.25.
2. Position the flue guard (Part No 7 716 190 009) with the locating
eyes to the side of the flue terminal and positioned centrally to the
flue terminal.
3. Position the flue guard so there is a 1mm gap between the
edge of the flue guard and the underneath of the top panel to
allow easy removal.
4. Mark centrally in the four locating eyes (A) and using a 6mm
drill bit; drill through the rear panel.
5. Remove the top panel and fasten the flue guard to the rear
panel using the M5, bolts and washers provided.
6. Check the top panel can be fitted and make any necessary adjustments.
11.7 Mounting of the Outdoor Pack Electrical Control Box
1. Replace the electrical control panel to the boiler as described
in Section 5.
2. Pull the thermostat knob forwards to remove from its spindle.
3. Undo the facia retaining screw and remove the plate.
4. Undo the wing nut on the underside of the boiler control box.
5. Fasten the Outdoor Pack control box top to the underside of
the support bracket using the wing nut as shown in Fig.27.
6. Using the clamp and the two screws provided fasten the outdoor
control box top to the support bracket as shown in Fig.27.
7. Feed the four core cable through the hole half way down the
open side panel; route between the boiler white casing and the
insulation jacket avoiding contact with hot surfaces.
NOTE: Make sure the plastic open/close bush is fixed in place to
the open side panel as this will protect the cable from the edge
of the open side panel.
8. Connect the mains supply four core cable to the outdoor
electrical control box as described in Section 10.3.
9. Push the Outdoor Pack control box into the control box top
ensuring the switch is facing the front of the appliance and
fasten using four screws provided.
10. Using the three core cable supplied connect to the boiler on
the terminal strip as described in Section 10.3.
11. Gently clip the frost thermostat phial into the tool clip
provided being careful not to kink or damage the capillary.
11.8 Heating system installation.
Before the appliance is fitted to the heating system
flush the system and mains water supply.
1. If not done previously plumb the boiler into the central
heating system.
Note: Drain cocks should be fitted on the lowest point on the
system to allow draining of the appliance and system.
2. Check that all unused sockets have been plugged.
3. Fill the system and vent all radiators and high points to
remove air from the system.
4. Check the boiler and all pipework connections for leaks.
5. The primary system should be flushed and treated in
accordance with the recommendations of BS 7593.
Note: Place a fillet of sealant around all pipework and the 4
core cable entering the Outdoor Pack to prevent water ingress.
11.9 Oil supply installation (see Figs. 6 to 7).
Note: Never route the oil supply pipe/hose directly below the
combustion chamber base.
1. Fit the oil supply pipe as described in Section 8. Route the
pipework though the Outdoor Pack rear panel and down either side
of the boiler in the gap between the base tray and the boiler shell.
Note: Never use soldered joints on oil supply pipes as this
could cause a hazard in the case of a fire.
2. Fit an isolating valve at the end of the oil line close to the
burner and ensure that the valve is closed.
18

19
Fig.18. Rear Panel Assembly.
Silencer outlet plate
Rear panel
Rear panel bracket
N.B. To prevent water ingress
blank off options not required.
Fire valve entry
Oil pipe entry
Fig.19. Oil Plate Fixing Hole Positions.
12mm
two pipe
option
10mm two pipe option
12mm
single pipe
option
10mm single pipe option
Blanked off
option
Fig.20. Fire Valve Plate.
N.B. The silencer outlet
plate can be fitted in two
positions, depending on
the boiler position within
the Outdoor Pack.
Choose the option
which lines the silencer
outlet plate hole
centrally with the
clamping collar on the
back of the boiler.
3. Open the main oil supply valve at the tank and check for any leaks.
4. Place a suitable container below the bulkhead fitting and
open the valve.
5. Draw off at least 2.5 litres of oil until a steady flow of clear
uncontaminated oil can be seen and turn off the isolating valve.
Note: This method may not be possible on some installations
where a sub-gravity system is used. Where this problem arises
bleed the system using the oil pump as described in Section 12
and remove and clean the oil pump filter to remove any debris
collected as a result of installation.
11.6 Replace the electrical control panel and boiler side panels
in reverse order to the removal procedure of Section 5 and
connect the electrical supply as described in Section 10.

20
Fig.22. Flue Terminal Assembly.
Flue terminal
locking band
Clamping collar
Gasket
Silencer bracket
Gasket
Flue outlet plate
Fig. 24. Flue Blanking Arrangement.
Gasket
Top flue blanking plate
Fixing screws
Fig. 23. Rear Flue Outlet Seal.
Form a bead of fire
cement or silicone sealant
around the collar before
inserting the flue terminal.
Fig.21. Fastening the Top panel Bracket to the Top Panel
Top panel bracket
Top Panel
(under side)
Nut No.6 screws supplied with
RS Short Silencer Kit