Potterton Statesman 45/50 Installation and maintenance instructions

About the Boiler This is a Floor Standing, Horizontally Fired, Automatic Pressure Jet Oil Boiler.
The boiler can be flued conventionaly or with a kit as a balanced flue.
This boiler is for use with Kerosine or Gas Oil and for use in GB & IE.
About Safety Installation must be in accordance with the Installation & Service Instructions and the rules in
force.
Leave these instructions with the user for use on future calls.
Statesman
45/50, 50/70, 70/90, 90/110,
System, Flowsure, Flowsure +
Installation & Service Instructions

2Part No. 5102478Contents
Contents
Section1-TechnicalData...............................................4
Health&Safety Information..........................................4
SealedSystemComponents.......................................6
ControlPanelWiringDiagrams..................................10
TechnicalData............................................................13
BoilerDimensions&Clearances................................14
FlueLayouts...............................................................15
Section 2 - Pre-Installation Requirements..................16
Chimneys/Flues.........................................................17
Combustion&VentilationAirRequirements...............18
Balanced&LowLevelTerminalClearances...............19
OilTanks & Layouts....................................................21
FloorTemperatures....................................................23
SealedSystemRequirements...................................23
Section 3 - Installation & Commissioning..................27
Conventional Flue......................................................28
Electricity Supply........................................................28
FuelPipes..................................................................29
WiringDiagrams.........................................................30
WaterConnections.....................................................34
Thermostats...........................................................34
Commissioning.......................................................36
Section4-Servicing & Maintenance...........................39
Servicing................................................................39
Maintenance...........................................................39
ReplacementofParts.................................................40
Thermostats-Statesman&System..........................41
LimitThermostat........................................................41
BoilerControlThermostat..........................................41
Thermostats - Flowsure/Flowsure+...........................42
BoilerControlThermostat..........................................42
LimitThermostat........................................................42
PumpOverrunThermostat.........................................42
TankLimitThermostat................................................42
DHWOverheatThermostat........................................42
HeatstoreThermostat................................................42
AutomaticAirVent......................................................42
PressureReliefValve.................................................43
CirculatingPump........................................................43
ExpansionVessel.......................................................43
Pressure&TemperatureGauge.................................43
DiverterValve.............................................................43
FlowSwitch................................................................43
DHW HotWater PlateHeat Exchanger...................44
Section 5 - Fault Finding..............................................47
Burnerdoesnotstart, motor does not run..................47
Burner starts, no flame established, no
oiltoburner.................................................................47
Burnerstarts,noflamebutoil to burner......................48
Burner starts, flame established but goes to
lockoutafter15seconds.............................................48
Locksout in morningsonly.........................................48
Flameestablishedbutnotmaintained........................49
Burner runs but smoke, and or smell,
andorpulsation..........................................................49
Otherproblems..........................................................50
Section 6 - Spare Parts.................................................52
Section7 - Flue Kit Options..........................................54

Part No. 5102478 3Safety
WARNING ! - this is aboutYOUR safety
Safe use of Kerosines and Gas Oils
Hazards
These fuels give off a flammable vapour when heated even moderately.
This vapour ignites easily, burns fiercely and can be explosive.
Vapour can flow along at ground level and collect as an explosive mixture in drains, cellars etc.at considerable
distances from open containers or spillages.
Fuels remove natural oils and fats, and may thus cause cracking and irritation of the skin.
Gas oil may also cause irreversible damage to your health on prolonged or repeated skin contact.
Precautions
ALWAYS HANDLE fuels in the open air or in a well ventilated place, well away from all sources of ignition
such as fires, sparks, hot surfaces and DO NOT SMOKE.
ALWAYS DRAIN fuels using a proper fuel retriever, mechanical siphon or funnel.
NEVER SUCK fuels up a tube by mouth.If accidentally swallowed - call a doctor - DO NOT INDUCE
VOMITING.
NEVER APPLY heat to a fuel tank, pipework or container.
AVOID INHALING fuel vapour; it can make you light-headed and seriously impair your judgement.
ALWAYS STORE fuels in a properly constructed and labelled tank.
If there is a Fuel Spillage
IMMEDIATELY STOP/SWITCH OFF all electrical and other ignition risks
REMOVE all contaminated clothing to safeguard yourself against fire risk and skin damage.
Wash the affected skin thoroughly with soap and water and remove the clothing to a safe, well
ventilated place and allow to air before washing or dry cleaning.
CONTAIN and smother the spill using sand, soil or other suitable incombustible material.
DO NOT ALLOW spilled fuel to escape into drains or water courses. If fuel does enter a drain, warn the Water
Authority and Fire Brigade.
CONSULT your Local Authority about disposal of contaminated soil.
FIRST AID iffuelisaccidentallyswallowed,SEEK IMMEDIATE MEDICAL ATTENTION - DO NOT INDUCE
VOMITING.
if fuel is splashed into eyes, wash out with running water for at least 10 minutes and SEEK
IMMEDIATE MEDICAL ATTENTION.

4Part No. 5102478Technical Data
1 -Technical Data
• The Statesman boilers are horizontally fired,
automatic pressure jet boilers. These boilers are
intended for use on indirect central heating systems.
Their use on direct systems is not recommended.
• The boilers as supplied can be installed directly to
suitable conventional chimneys.For balanced flue
installations, an appropriate flue kit is additionally
required.
• The Statesman boilers have been independently
tested to standards EN 55014 and EN 50082-1 and
show compliance with the E.M.C. Directive 89/336/
EEC.
• The boiler has an easily removable front access door
which gives quick access for cleaning.
• The maximum static head of water permissible is
27.44 metres (90 ft).
• Water flow and return connections are provided on
eachside and rear of the boiler (dependant on model).
Note: When installing the boiler, make sure all
unwanted tappings are blanked off.
Health & Safety Information for the Installer &
Service Engineer
Underthe Consumer Protection Act 1987and Section
6 of the Health and Safety at Work Act 1974, we are
required to provide information on substances
hazardous to health.
Small quantities of adhesives and sealants used in
the product are cured and present no known hazards
when used in the manner for which they are intended.
The following substances are also present:
Insulation and Seals
Material - Man Made Mineral Fibre.
Description - Boards, Ropes, Gaskets.
Known Hazards - Some people can suffer reddening
and itching of the skin. Fibre entry into the eye will
cause foreign body irritation which can cause severe
irritation to people wearing contact lenses. Irritation
to respiratory tract.
Precautions - Dust goggles will protect eyes.People
with a history of skin complaints may be particularly
susceptibletoirritation.High dust levelsare only likely
to arise following harsh abrasion. In general, normal
handling and use will not present high risk, follow
good hygiene practices, wash hands before, touching
eyes, consuming food, drinking or using the toilet.
First Aid - Medical attention must be sought following
eye contact or prolonged reddening of the skin.
Flue Gas Sampling Point
To aid commissioning, a flue gas sampling point is
built into the heat exchanger front access door. If
this door is removed make sure that when re-fitted,
the sampling point is at the top.
Oil Pipe Installation
The boiler base features "Knock Out" holes for
installation purposes. Remove using a drift or dot
punch as required. Grommets are provided for cable
protection within the connection pack. Additional
holes have been provided in the front of each side of
the base.These are to provide more options when
bringing in the fuel hoses and if required, electrical
wiring.
Burner
Theburnerisanautomaticpressurejettype,pre-wired,
with a photocell flame failure control.
The standard burner fitted is the Riello RDB with
different combustion heads to suit boiler ratings.
BoilerThermostats
A pre-wired control thermostat is provided with each
boiler.This thermostatis calibrated to giveamaximum
boiler temperature of 82°C (180 °F) and a minimum
temperatureof 55 °C (130 °F).Under nocircumstances
should the boiler be operated below the minimum
indicated setting, or below a flow temperature of 55
°C (130 °F). For best operation it is suggested that
the boiler should be operated at a setting just below
maximum on the thermostat setting. The boiler also
hasa limit(overheat) thermostat calibrated to operate
at 110 °C (230 °F).This is located on the underside
of the control panel, see the Users Instructions.
Statesman, Statesman System
System & Boiler Control
Due to the high efficiency of the Statesman boilers,
thefollowing should betakeninto considerationduring
installation:-
Control of the Boiler: When the demand for heating
and/or hot water is satisfied, the controls should be
arranged such that the burner is switched off. If due
tothe system design nuisance tripping of the overheat
thermostat occurs, it may be advisable to fit a pump
overrun device (Incorporating a by-pass system
where necessary).

Part No. 5102478 5Technical Data
Fig. 1
Side Flue
Knockout
Top Flue
Knockout
Flue Outlet
Flange
Thermostat
Pocket
Flow Outlet
Return Inlet
Knock-out
Holes For
Cables And
Fuel Pipes
Side
Cover
Burner
Air Inlet
Boiler Shell
Burner Oil
Feed Pipe
Statesman
Top Casing
Side Flue
Knockout
Thermostat
Pocket
Front Access
Door
Burner Lead
Flue Gas
Sampling
Viewing Window
Front Cover
Burner
Lockout Reset
Button
Control
Thermostat
Indicator Lights
Programmer
(Optional)
ST00205A

6Part No. 5102478Technical Data
Statesman System, Flowsure & Flowsure+
Principal boiler components
Automatic and Manual AirVents
Manualair ventsare providedon the Flowsureand
Flowsure+ only.
Pressure ReliefValve
This is factory set at 3 bar (45 lb/in²).
Pump
An integral circulating pump is incorporated within
the boiler casing.This also serves the functions of
both the central heating circuit and domestic hot
water (Flowsure/Flowsure+).
ExpansionVessel
A 10 litre expansion vessel, charged to 0.5 bar and
is suitable for a static head of 5 metres (16.5 ft), is
included within the boiler casing.
DiverterValve
On the Flowsure and Flowsure+, a motorised
diverter valve is located on the pump outlet.The
valveisnormallyclosedtothecentralheatingcircuit
and is powered open when there is a demand for
central heating via the room thermostat.
Flow Switch
On the Flowsure and Flowsure+, the domestic
mainswaterinlet isconnected toa flowswitch, this
detects when a domestic hot water tap has been
opened.This activates the burner and pump.
Domestic Service Cock
Thedomestic service cockfitted to the mains water
inlet of the Flowsure and Flowsure +, incorporates
a pre-set flow regulation device, this restricts the
maximum flow of domestic hot water to the taps,
13 l/m and 17.5 l/m respectively.
Domestic HotWater Heat Exchanger
On the Flowsure and Flowsure+, a water to water
heat exchanger is located within the boiler casing.
Primary water is pumped from the boiler (heatstore
tankonFlowsure+)to theheatexchangerwhenever
thereisaflowofdomesticwaterthrough ahotwater
tap.The domestic water thereby extracts the heat
from the plate heat exchanger giving mains
pressure domestic hot water.The domestic hot
water temperature can be increased by reducing
thewaterflowrateat thetap(Flowsure)oradjusting
the hot water mixing valve to a higher setting
(Flowsure+).
Pump overrun
On the Flowsure and Flowsure+, a pump overrun
facility has been incorporated into the electrical
control panel which allows excess heat to be
dissipated to either the central heating circuit or
boiler shell, dependant on mode selected.This
prevents the possibility of the boiler overheating.
Heatstore tank
Onthe Flowsure+, the heatstore tankis a heatbank
containing 40 litres (8.8 gallons) of primary hot
water.The tank temperature is controlled by the
DHW thermostat to approximately 75 °C.
Note:A bypass system should be fitted between
the flow and return pipes,where primary water
flow may be prevented during a pump overrun
situation (Flowsure, Flowsure+).
DHW Mixing Valve (Flowsure+ Only)
The DHW mixing valve is factory set to the mid
position,this will give a blended water temperature
of approximately 60°C. After removing the front
casing (Pull forward off the mounting clips), the
control knob (top right, behind control panel) will
be accessible and can be turned as required.
Clockwise to decrease and anti-clockwise to
increase temperature - See Fig. 4. for the position
of the valve.
MIN Mid
Position Fully Open
Turn the
Control Knob
anti-clockwise
3 notches for
mid position
60˚ Approx. + Temp.
- Temp.
Turn the
Control Knob
anti-clockwise
3 notches for
fully open position
ST00193A

Part No. 5102478 7Technical Data
Fig. 2
ST00206A
C O
M
P
A
C
T
Automatic
Air Vent
Pressure
Relief Valve
Thermostat
Pocket
Control
Thermostat
Main Facia
Panel
Indictator
Lights
Pump
Expansion
Vessel
Expansion
Vessel
Connection &
Boiler Drain Valve
Burner Air
Inlet Pipe
Burner
Lockout
Reset
Button
Burner Oil
Feed Pipe
Knock-out Blanks For
Cables And Fuel Pipes
Thermostat
Pocket
Programmer
(Optional)
Expansion Vessel Cradle
Pressure and
Temperature Gauge
Expansion Vessel
Connection Pipe
Combustion Chamber
Viewing Window
Combustion Chamber
Access Panel
Flow
(22mm)
Return (1" B.S.P.)
Left & Right-hand
Statesman
Conventional
Flue

8Part No. 5102478Technical Data
Fig. 3
ST00207A
Cold Water
Feed (15mm)
D.H.W. Flow
(15mm)
C.Heating
Flow (22mm)
NOT
Supplied
Viewing
Window
Automatic
Air Vent
Manual
Air Vent
Certain Items Removed For Clarity
Conventional
Flue
Pressure
Relief Valve
Pump
Overrun
Pocket
Domestic
Service
Cock
Flow
Switch
(Type 1)
Pump
Boiler
Thermostat
Sleeve
Plate Heat
Exchanger
D.H.W.
Overheat
Thermostat
3 bar
Expansion
Vessel Expansion
Vessel
Valve
Expansion
Vessel
Connection
Pipe
Expansion
Vessel Support
Bracket
3 Way
Diverter
Valve
C.Heating
Return (1" B.S.P.)
C.Heating
Return (1" B.S.P.)
Boiler limit Stat
& Temp Guage
Bulb Pocket
Expansion Vessel
Connection &
Boiler Drain Valve
Double
Check
Valve
System Fill Flexible Hose
(DO NOT use as
a permanent fitting)
System
Fill Pipe
System Fill
Isolation Valve
System Fill
(15mm)
Cold Main
Isolation Valve
Statesman
Flow Switch
(Type 2)

Part No. 5102478 9Technical Data
Fig. 4
Automatic
Air Vent
Mixing
Valve
Pressure
Relief Valve
Boiler
Thermostat
Sleeve
Pump
Pump
Overrun
Pocket
Tank Limit
Thermostat
Pocket
ST00208A
Primary Water
Heatstore
Heatstore
Drain Valve
Temp./Press Valve
Connection Point
Heatstore
Thermostat
Cold
Water
Feed
(15mm)
D.H.W.
Flow
(15mm)
C.Heating
Flow (22mm)
NOT
Supplied
NOT Supplied
Manual
Air Vent
Certain Items Removed For Clarity
Conventional
Flue
Boiler limit
Stat & Temp
Guage Bulb
Pocket
Plate Heat
Exchanger
Plate Heat
Exchanger
Expansion
Vessel
Connection &
Valve
Expansion
Vessel
Connection
Pipe
Expansion
Vessel
Support
Bracket
Expansion
Vessel
Expansion
Vessel
Valve
3 Way
Diverter
Valve
Double
Check
Valve
C.Heating
Return (1" B.S.P.) System Fill Flexible Hose
(DO NOT use as
a permanent fitting)
System
Fill Pipe
System Fill
Isolation Valve
System Fill
(15mm)
Cold Main
Isolation Valve
Statesman
Flow Switch
(Type 2)
Domestic
Service
Cock
Flow
Switch
(Type 1)

10 Part No. 5102478Technical Data
Fig. 5
ST00123C
N
L
N
L
N
L
N
N
E
E
L
L
N
N
L
N
L
N
L
Terminal
Block
Terminal
Block
Overheat
Burner
Lockout
Mains
On
NEL
Burner
Socket
Main Socket
Chassis Earth
Boiler
Terminal
Socket
(6 way)
Boiler
Terminal
Plug
(6 way)
Limit
Stat.
Boiler
Stat.
L2
L1
E
N
1
1
2
2
Main
Supply
Connection
Colour Coding
For The Wiring
b - Blue
br - Brown
gy - Grey
r - Red
bl - Black
g/y - Green/Yellow
Colour Coding
For The Wiring
b - Blue
br - Brown
gy - Grey
r - Red
bl - Black
g/y - Green/Yellow
bg/y
g/y
br
br
br
r
bb
g/y
bl
br
b
g/y
gy
gy
br
br br
r
bl
bl
b
br
b
br
b
b
b
br
Boiler Control Panel
Wiring Diagram
Statesman
NEL
Live
Main
Supply
Connection
LL E
E
NN
S/L S/L
Neutral
Pump
Tray Assembly Link to be replaced with
room thermostat
N
Boiler Control Panel
Wiring Diagram
Statesman.............
Earth
N
L
N
L
N
L
N
N
E
E
L
L
N
N
L
N
L
N
L
Terminal
Block
Terminal
Block
Overheat
Burner
Lockout
Mains
On
NEL
Burner
Socket
Main Socket
Chassis Earth
Boiler
Terminal
Socket
(6 way)
Boiler
Terminal
Plug
(6 way)
Limit
Stat.
Boiler
Stat.
L2
L1
E
N
1
1
2
2
Main
Supply
Connection
bg/y
g/y
br
br
br
r
bb
g/y
bl
br
b
g/y
gy
gy
br
br br
r
bl
bl
b
br
b
br
b
b
b
br
NEL
Live
Main
Supply
Connection
LL E
E
NN
S/L S/L
E
EN
N
S/L
S/L
Neutral
Earth
br
g/y
b
LE

Part No. 5102478 11Technical Data
Fig. 6
ST00092D
N
L
N
L
N
L
N N
E E
L L
N
N
L
N
L
N
L
Terminal
Block
Terminal
Block
0.47 UF Capacitor
Overheat
Burner
Lockout
Mains
On
NEL
Burner
Socket
Main Socket Chassis
Earth
Limit Stat.
Boiler
Stat.
Pump
Overrun
Stat.
D.H.W. Thermostat
L2
L1
E
N
1
21
34
2
22
2
3
2
Main Supply Connection
Colour Coding For The Wiring b - Blue br - Brown gy - Grey r - Red g/y - Green/Yellow w - White v - Violet y - Yellow o - Orange p - Pink bl - Black
bg/y
br
r
bb
g/y
bl
br
br
Control Panel
Wiring Diagram
NEL
Live
Main Supply
Connection
L
N
S/L S/L
Neutral
Earth
11(1)
31(11)
A2(10) A1(2)
14(3)
34(9)
12(4)
32(8)
22(5) 24(7)
21(6)
Flow
Switch
Diverter Valve
Pump
Tray Assembly
L L
1 1
E E
N N
L L
S/L S/L
L L
L
N
E
Relay
br br
vo
b
g/y
gy
gy
y
o
rv
o
br
bl
bl
o
r
br br
br
br
br
b
b
b
bl
bl
bb
p
b
g/y
b
b
br
p
gy
w
g/y
g/y
w
gy
gy
bl
br
br
r
bl
y
b
b
LINK to be replaced with room thermostat
L
N
CH
ON
HW
ON
1 1
1b1a
1a
o
Electro-mech.
Clock
3 Position Switch
2 Position Switch
53 21
C.Heating
Boiler
b
br
br
gy
p
w
wbr
y
yb
b
y
Statesman
br
br
br
br

12 Part No. 5102478Technical Data
Fig. 7
N
L
N
L
N
L
N N
E E
L L
N
N
L
N
L
N
L
Terminal
Block
Terminal
Block
Overheat
Burner
Lockout
Mains
On
NEL
Burner
Socket
Main Socket
Chassis
Earth
Limit Stat.
Boiler
Stat.
Pump
Overrun
Stat.
Tank Limit Thermostat
L2
L1
E
N
21
34
2
22
2
3
4
3
2
Main Supply Connection
bg/y
br
r
bb
g/y
bl
br
br
Control Panel
Wiring Diagram
NEL
Live
Main Supply
Connection
L
N
S/L S/L
Neutral
Earth
11(1)
31(11)
A2(10) A1(2)
14(3)
34(9)
12(4)
32(8)
22(5) 24(7)
21(6)
Flow
Switch
Tank Thermostat
Diverter Valve
Pump
Tray Assembly
L L
1 1
E E
N N
L L
S/L S/L
L L
L
N
E
Relay
1
2
br br
v
v
o
g/y
gy
o
rv
o
br
bl
bl
o
r
br br
br
br
br
b
b
b
bl
bl
bb
p
b
g/y
b
b
br
p
w
g/y
g/y
w
gy
gy
bl
br
br
r
bl
gy
gy
0.47 UF Capacitor
LINK to be replaced with room thermostat
L
N
CH
ON
HW
ON
1 1
1b1a
1a
o
Electro-mech.
Clock
3 Position Switch
2 Position Switch
53 21
C.Heating
Boiler
b
br
br
gy
p
w
wbr
y
yb
bb
yy
y
b
b
y
Statesman
br
br
br
br
Colour Coding For The Wiring b - Blue br - Brown gy - Grey r - Red g/y - Green/Yellow w - White v - Violet y - Yellow o - Orange p - Pink bl - Black
ST00124D

Part No. 5102478 13Technical Data
Table 1
Technical Data
System
Flowsure
Model 45/50 50/70 70/90 90/110 Flowsure+
Btu/h kW Btu/h kW Btu/h kW Btu/h kW Btu/h kW
MaximumOutput 51,000 15 68,000 20 89,000 26 110,000 32 85,000 25
MinimumOutput 44,000 13 51,000 15 68,000 20 89,000 26 68,000 20
Factory Set Output Kerosine 51,000 15 61,000 18 82,000 24 102,000 30 82,000 24
Gas Oil 51,000 15 61,000 18 82,000 24 102,000 30 82,000 24
Riello Burner Type RDB1 RDB1 RDB1 RDB2 RDB1
Combustion Head Type Kerosine LD2SH LD2SH LD3 LD3 LD3
Gas Oil LD2SH LD2SH LD3 LD3 LD3
NettFull LoadEfficiency % 93.2 87.5 92.6 89.8 88.0
BoilerGasVolume m³0.041 0.041 0.058 0.055 0.058
Exit Flue Gas Mass Flow (Max) kg/h 23.42 32.81 41.72 52.14 40.98
FlueGasTemperatureRise
Above Ambient °C 200 220 230 235 245
ResistanceToCombustion
Products mbar 0.15 0.4 0.55 0.7 0.7
MaximumHearthTemperature °C60 62 50 50 65
WaterSide Resistance(Cold)
10°CDifferential mbar 11.0 11.0 21.2 18.3 15.0
20°CDifferential mbar 4.0 4.0 6.7 1.9 6.0
MaximumStaticHead 90ft. Water (40 p.s.i.)
MinimumStaticHead 5.0ft. Water (3.0p.s.i.)
MaximumOperatingTemperature 82 °C (180 °F)
MinimumOperatingTemperature 55 °C (131 °F)
MaximumBoilerOperatingPressure 3 Bar (43.5 p.s.i.) (Class 2)
ConventionalFlueDraughtatBoiler
FlueOutlet 0.035"w.g.(8.75N/m²)Minimum 0.16"w.g.(40.0N/m²)Maximum
LimitThermostatSetting 110°C (230 °F) ManualReset
MaximumCasingPanelTemperature LessThan 35 °CAbove RoomTemperature
MaximumSurfaceTemperaturesof
Adjusting, Control & Safety Devices Less Than 30°CAbove Room Temperature
ElectricalSupply 230V 1 Phase 50Hz Fuse 5A
Model Flowsure Flowsure+
DHWLimitThermostatSetting 73 °C (163 °F)
DHWStoreThermostatSetting 73 °C (163 °F)
DHWStoreLimitThermostatSetting 88 °C (190 °F)
PumpOverrunThermostatSetting 88 °C (190 °F) 88 °C (190 °F)
FlowRestrictor 13l/m(Brown) 17.5l/m(Green)
Maximum DHWFlow Rate 13 ± 1.5 l/m (2.9 ± 0.3 g/m) 17.5 ± 1.5 l/m (3.9 ± 0.3 g/m)
MinimumDHWFlowRate 2.5 ± 0.5 l/m (0.5 ± 0.1 g/m) 2.5 ± 0.5 l/m (0.5 ± 0.1 g/m)
MaximumDHW InletPressure 10 Bar(145p.s.i.) 10Bar(145 p.s.i.)
MinimumDHWInletPressure 1Bar(14.5 p.s.i.) 1Bar(14.5 p.s.i.)
DHWTemperatureRise At a Constant
30 °C 12.5l/m(2.7g/m) 17.0l/m(3.7g/m)
50 °C 7.5l/m(1.6g/m) 12.0l/m(2.6g/m)
StoreCapacity 40Litres
TimetoAchieveStorageTemperature 12Minutes(FromCold)

14 Part No. 5102478
Model
Height
Width
Depth
Centre of flue from rear
Flue Diameter
Height between connections
Height of bottom connection
Distance of conn.from wall
Return Connections 2off
1 off
Flow connections 2off
1 off
Cold Mains Inlet
DHW Outlet
System Fill
Weight empty
Water content
Water content
Oil Supply Connection
Installation Front
Clearances Top
Sides BF
Sides CF
Technical Data
mm
mm
mm
mm
mm
mm
mm
mm
kg
ltr
Imp
BSP
mm
mm
mm
mm
A
B
C
D
E
F
G
H
J
K
45/50, 50/70
850
390
565
100
100
569
97
59
1" B.S.P
1" B.S.P
105
18.2
4.0
¼"
610
12
6
25
70/90
850
490
565
100
125
569
97
59
1" B.S.P
1" B.S.P
122
20.5
4.5
¼"
610
12
6
25
System
850
490
565
100
125
97
59
1" B.S.P
22mm
130
20.5
4.5
¼"
610
12
6
25
Flowsure
850
490
565
100
125
97
59
1" B.S.P
22mm
15mm
15mm
15mm
145
20.5
4.5
¼"
610
12*
6
25
Flowsure+
850
590
565
100
125
97
59
1" B.S.P
22mm
15mm
15mm
15mm
170
60.0
13.2
¼"
610
12*
6
25
* If mounted under a worktop, the top needs to be removed
Table 2
Boiler Dimension & Clearances
90/110
850
490
565
100
125
569
97
59
1" B.S.P
1" B.S.P
128
22.5
5.0
¼"
610
12
6
25

Part No. 5102478 15
ST00125E
610mm
Min.
Minimum
Boiler
Clearances
Flue Options:
12mm
Min. 6mm
or
25mm
Min.
Low Level Horizontal High Level Horizontal High Level Vertical
For Flue Lengths see tableFor Flue Lengths see tablesFor Flue Lengths see tables
1.6m Min.
2.1m Max.
Floor
Level Floor
Level
Intersection
With Roof
Kit 3
Kit 4
Kits 9 or 10
770mm
Floor Level
Kits 1 & 2
Kits 7 & 8
Kits 5 & 6
(if required)
Kits 5 & 6
(if required) Kits 5 & 6
(if required)
Kit 3 2.150m Min.
4.550m Max.
20mm
Flue
Outlet
Flue
Outlet
Flue
Outlet
C
D
D
K
F
A
Flue
Outlet
B
Boiler
Dimensions
D
Knock-out Blanks
For Cables
And Fuel Pipes
GJ
H
6mm or
25mm
Min.
D
Low Level Riser
Flue Kits 12, 5, 6, 7, & 8
For Flue Lengths see tables
990mm
Floor
Level
Kits 7 & 8
Kit 12
Kits 5 & 6
(if required)
Flue Kits 1, 2, 5, & 6
Suitable for all Models
(System, Flowsure &
Flowsure + Rear Flue Only)
Flue Kits 3, 5, 6, 7, & 8
Suitable for all Models Flue Kits 3, 4, 5, 6, 9 & 10 Suitable for all Models
Fig. 8
Technical Data

16 Part No. 5102478
As with all building services, the oil fired
systems have to be installed so as to ensure
safe and efficient operation. The following notes
provide a guide to current best practice. It is
important that documents relating to Building
Regulations and Standards are studied.
In addition we also recommend the following
OFTEC publications:-
Technical Information Book 3
Installation requirements for oil
fired boilers and oil storage tanks.
Technical Information Book 4
Domestic heating systems
These books are available from OFTEC, Century
House, 100 High Street, Banstead, Surrey SM7
2NN.
Training
Baxi have several training centres around the
country, fordetails of courses foroil firing telephone
01926 430481. OFTEC also hold training courses
on oil fired central heating.
Regulations and Standards
The installation of oil fired boilers is covered by the
requirements of the Building Regulations which are
statutory instruments and must be complied with.
Those for England and Wales are made by the
Department of the Environment in London.
The Building Standards (Scotland) Regulations are
made by the Scottish Office.Part F of theTechnical
StandardstotheRegulationscovers heat producing
appliances and fuel storage.
The Building Regulations (Northern Ireland) are
made by the Northern Ireland Department of the
Environment.Heat producing appliances, including
oil heating appliances, are covered by Technical
Booklet L.
The Isle of Man has its own Building Bye-laws. In
the Channel Islands, Jersey and Guernsey have
their own separate Building Bye-laws.
The British Standard covering oil fired boiler
installationis BS5410.This is issued as Part 1:1977
for installations up to 45 kW and Part 2:1978 for
larger installations. This standard also covers oil
storage tank installations.
Additional standards and regulations
•BS 5449: 1990 Forced circulation hot water
Fig. 9
Pre-InstallationRequirements
2 - Pre-Installation Requirements

Part No. 5102478 17Pre-InstallationRequirements
Fig. 10
central heating systems for domestic
premises.
•BS 7074: Pt.1:1989 Application, selection
and installation of expansion vessels and
ancillary equipment for sealed systems.
•BS 7671 Requirements for electrical
installations.IEE wiring regulations 16th
edition.
•Control of pollution (oil) regulations.
•Local water undertakings bye-laws.
Chimney
Every Baxi boiler has a very high
efficiencyandcaremustbetakentoensure
that the chimney is suitable.
Chimneysmayhave been already builtand
completedbeforeachoiceofappliance has
been made. Alternatively, chimneys may
be installed to suit the particular appliance
chosen.
A factory made insulated chimney
complyingwith the requirement of BS4543
may be considered as an alternative to a
conventional structural chimney for both
new and existing buildings. A further
alternative may be a suitable form of
insulated flue pipe normally positioned on
a wall outside a building.
Capacity
The chimney or flue must have a cross-
sectionalarea throughout its whole length,
that is at least the area of the flue outlet of
the boiler and must be sealed at the boiler
with fire clay or other suitable compounds.
As few bends as possible should be used
and, where necessary, 135°bends are
recommended.
Height
The chimney or flue should be of sufficient
height to provide a minimum draught of
0.035" w.g.measured above the boiler.
Draught conditions that are excessive i.e.
above 0.16" w.g.due to chimney height or
location, should be controlled by means of
a draught stabiliser fitted to the chimney.
External Flues
Allexternalfluesof metal or other materials
shouldhave cleaning facilities,andbe well
insulated to maintain the correct draught
conditions.

18 Part No. 5102478
Fig. 11
Pre-InstallationRequirements
Internal Flues
Theexposedflue pipe betweenthe boiler flue off-take
andthe chimney proper (either internallyor externally)
must not be of asbestos.Vitreous Cast Iron, Steel or
similar materials should be used.
Note: When installing the boiler into a chimney
previouslyfitted with a liner,the liner mustbe replaced
and made weather-tight.
Choice of Materials
The materials used in the construction of chimneys
and flues must always be suitable for the application.
Their construction must be durable, non-combustible,
abletoresistthe range of temperatures expected;and
alsoresistant to external as well as internal corrosion.
This is particularly important due to the Statesman's
high thermal efficiency, where correct choice of
materials will prevent problems likely to be caused by
condensation.
If you are in any doubt, you should seek advice of a
reputable manufacturer of chimneys, names should
be available from your local stockist.
Combustion &Ventilation Air for Open Flue Oil Fired
Boilers
General. A sufficient permanent air supply to an
appliance will be required.
a) For proper combustion of fuel and effective
discharge of combustion products to the open air.
b) For the ventilation of any confined space in which
an appliance is installed to prevent overheating of
the appliance and any equipment in and near the
appliance.
c) Forthe satisfactory operation of any draught break
or stabilizer which may be fitted.
Air for Combustion
This requirement will be satisfied if the room or space
in which the appliance is installed has an opening or
duct which is designed to allow the passage of air at
all times equivalent, in total free area, to 550 mm2/kW
(2.5 in2per 10,000 btu’s) of the appliance rating.
If the space containing the appliance has an extract
ventilation fan fitted, the supply of air should be such
that the operation of the appliance and flue is
unaffected when the windows and doors are closed
and the extractor fan is running.
Air forVentilation
For an appliance in a confined space, care shall be
taken to provide air for ventilation.A working guide to
the minimum free area of openings to be provided in
addition to that for combustion air is as follows:
a) Where the air is taken from a heated space, 1100
mm2/kW at high level and 1100 mm2/kW (5.0 ins2
per 10,000 Btu’s) at low level.
b) Where the air is taken from outside, 550 mm2/kW
at both high level and low level (2.5 in2per 10,000
btu’s) at low level.
The above requirements are essential, in particular
for appliances which are installed with a low level
discharge.The warranty for such boilers could be
affected if proper free air requirements are not
provided.
FREE AREAS OF GRILLES ARE MM2PER KW
OF APPLIANCE RATING (OUTPUT)

Part No. 5102478 19
Combustion & Ventilation Air for Balanced Flue Oil Fired Boilers
FREE AREAS OF GRILLES ARE mm2PER/KW OF APPLIANCE RATING (OUTPUT)
Balanced Flue
Boilersfitted with balanced flues must only fire Kerosineandwill not operate satisfactorily unless the free airrequirements
have been satisfied.
Consideration should be given to the texture of the wall onto which the low level flue terminal is fixed. As with all heat
emitting devices the warm air from the terminal will encourage the accumulation of dirt which will at some time require
removal with a detergent based cleaning fluid.
Clearances Required Around Balanced and Low Level Discharge Flues Fitted to Oil Fired Boilers
See Fig. 13
ABelow a gutter or sanitary pipework GFrom a surface facing the terminal
BHorizontal from opening, airbrick window etc. HVertical from terminals on the same wall
CAbove ground or balcony level IHorizontal from terminals on the same wall
DBelow eaves or balcony JBelow an opening, airbrick, window etc.
EFrom an internal or external corner KFrom vertical sanitary pipework
FFrom a terminal facing a terminal
Fig. 12
Pre-InstallationRequirements
Extract Fans
If the room in which the appliance is located also has an
extract fan the performance of the appliance must be
unaffected when the fan is running with all doors and
windows closed.
DraughtBreaks
Whenanappliance with adraughtbreak is fittedin a room
add 550mm2/kW to the free area of the combustion air
inlet.
Whenanappliancewithadraughtbreakinacompartment
whichisventilatedas noted above,noadditionalallowance
is required.

20 Part No. 5102478
* Where the terminal is within 1 metre of any plastic material, such material should be protected from the effects
of combustion products.
There are additional general requirements in most Regulations and Standards that the flue must be positioned so
that it does not cause a nuisance and permits the dispersal of combustion products.
If the terminal is less than 2 metres above ground level, balcony or place to which any person has access, the
terminal must be protected by a guard, (Flue Guard Part No.26000045).
Table Showing the Balanced Flue Clearance Dimensions
ABCDEFGHI J K
Building Regulations
England&Wales1991 - 600 - - 600 - ---600-
Scotland 1990 Balanced* 600 - 600 600 600 600 600 1500 600 600 600
Low Level* 1000 - 600 1000 600 600 600 1500 600 600 1000
Northern Ireland 1990 - 600 - - 600 - ---600-
British Standard
BS 5410 Part 1 1997 600 600 300 600 300 1200 600 1500 750 600 300
Table 3
Fig. 13
Pre-InstallationRequirements