
CONTENTS
1
FOREWORD
1. INTRODUCTION
Health & Safety
Fuel Spillage
First Aid
2. TECHNICAL SPECIFICATIONS
2a Boiler Dimensions
2b Boiler Specifications & Recommendations Etc.
2c Oil Burner Performance Specification
2d Boiler control panel wring diagram
2e & f Riello oil burner specification & technical details
2g Control panel layout
3. OPERATING INSTRUCTIONS
3a Boiler controls
3b Operating procedure
3c Burner lock out
3d Boiler operation & control
4. INSTALLATION
4a Standards & Regulations
4b Positioning Boiler
4c Flue Systems
4d Boiler siting regulations & Standards
4e Ventilation and Combustion Air
1. Conventional Flue
2. Balanced Flue
4.f Domestic Htc. & H.w. Systems electrical supply
5. OIL SUPPLY
5a Oil storage tank siting
5b Flexible oil pipe(s)
5c Single pipe system
5d Two pipe systems
5e Tigerloop single pipe systems
6. FLUE SYSTEMS
6a Important notice
6b Balanced flue systems
6c Concentric flue systems
7. COMMISSIONING
7a Procedures
7b Handing over
8. SERVICING
8a Recommended service intervals
8b The oil tank
8c The boiler
8d The Burner
COMBI PART 2.
Sealed system & domestic hot water Page 31
COMBI PART 3.
9. FAULT FINDING
10. SPARE PARTS
10a Riello burner parts illustration
10b Pluming parts illustration
10c Pluming parts description
10d Boiler parts illustration
10e Boiler parts description
10f Control panel illustration
10g Control panel description
Commissioning record Page 48
Service reports Page 49

2
FOREWORD
1
INTRODUCTION
This instruction manual is produced for the reference
and guidance of qualified installation engineers. EU
legislation governs the manufacture, operation and
efficiency of all domestic oil boilers. One effect of this
will be that boilers and burners will require to be
supplied as matched units tested and approved to
OFTEC Standard OFS Al00.
FIREBIRD Boilers are full manufacturing members of
OFTEC (Oil Firing Technical Association for the
Petroleum Industry) and are participating in its Boiler
testing and approvals programme to comply with OFS
A100 and EC Efficiency Directive.
Boilers must be installed, commissioned
and serviced by qualified and experienced
OFTEC approved personnel (U.K. only). It
should be noted that it is the
responsibility of the installer to ensure
that the boiler is properly commissioned.
Failure to do so may invalidate the boiler
guarantee and any extended warranty.
All appropriate OFTEC manuals and BS
Standards should be studied and their
requirements adhered to and used in
conjunction with these instructions. This
manual includes a list of some BS
Standards and Building Regulations.
OFTEC is conducting training and registration of
engineers and this is to be commended, as reading of
this manual alone for installation and servicing
procedures cannot replace the critical advantage
provided by training and years of experience.
The Firebird Combi Boiler Range is based on the ‘S’
Range Boilers. All boilers in the range are designed
and manufactured to meet all the latest European
standards and the thermal efficiency requirements of
the Boiler (efficiency) Regulations 1993. All Boilers
can be fitted to a conventional flue or easily adapted
to a room sealed unit by using a Firebird matched
balanced flue kit.
The control panel can be easily accessed by the
simple removal of four screws, then this assembly can
be pulled forward for access to components.
Clean combustion with kitchen-quiet operation is
assured by a highly efficient matching pressure jet
burner which produces very low NOxemissions. The
Combi Range is a dedicated sealed system boiler
having a 12 litre expansion vessel on the 50-70 and
70-90 models, on the 90-120 model ther is a 14 litre
expansion vessel, system filling kit and 3 bar safety
valve all fitted within its cabinet.
A drain-off cock is fitted inside the boiler beside the
burner and there are flow and return connections
provided under top lid of the boiler for connection to
the heating and hot water systems. As all servicing can
be carried out from the front, the boiler many be
fitted under a kitchen worktop.
The burner is factory set for use with kerosene 28
second class C fuel. However, 35 second gas oil
may be used on a conventional flue installation,
a oil pre-heater may be necessary.
GUARANTEE
• All Firebird oil Boilers have a 2 year
comprehensive warranty which extends to
5 year on the boiler shell
• The Guarantee card must be fully
completed and returned to firebird within
28 day’s of installation.
• Consumable components, the nozzles and
the oil hose are excluded.
• The terms laid down on the Guarantee
must be adhered to.
NOTE: Some Firebird boilers are suitable
for conversion to gas. Conversion must only
be undertaken by Firebird approved gas
technicians using a Firebird supplied
conversion kit suitable for the particular
boiler.

Safe use of Kerosene and Gas Oil.
These fuels give off a flammable vapour when heated
moderately. Vapour ignites easily, burns intensely and
may cause explosion. The vapour can follow along at
ground level for considerable distances from open
containers and spillages collecting as an explosive
mixture in drains, cellars, etc.
Fuels remove natural oils and fats from the skin and
this may cause irritation and cracking of skin. Barrier
cream containing lanolin is highly recommended
together with good personal hygiene.
Gas oil may also cause irreversible damage to health
on prolonged or repeated skin contact.
Always store fuels in a properly constructed and
labelled tank. Always handle fuel in open air or well
ventilated space away from sources of ignition and
refrain from smoking.
Always drain fuel using a proper fuel retriever, funnel
or mechanical siphon. Never apply heat to a fuel tank,
container or pipework. Never siphon fuel through
tube by mouth. If accidentally swallowed contact
doctor immediately and do NOT induce vomiting.
Avoid inhaling fuel vapour as this can cause light
headedness and seriously impair judgement.
3
Under the Consumer Protection Act 1987 and
Section 6 of the Health and Safety Act 1974, we are
required to provide information on substances
hazardous to health.
INSULATION AND SEALS
Ceramic Fibre, Alumino - Silicone Fibre material are
used for boards, ropes and gaskets. Known hazards
are that people may suffer reddening and itching of
the skin. Fibre entering the eye will cause foreign
body irritation. It may also cause irritation to the
respiratory tract.
Precautions should be taken by people with a history
of skin complaints or who may be particularly
susceptible to irritation. High dust levels are only
likely to arise following harsh abrasion.
Generally, normal handling and use will not give
discomfort. Follow good hygiene practices, wash
hands before consuming food, drink or using the
toilet.
First Aid - Medical attention should be sought
following eye contact or prolonged reddening of the
skin.
The small quantities of adhesives and sealants used in
the product are cured. They present no known
hazards when used in the manner for which they are
intended.
1. Switch off all electrical and other ignition
sources.
2. Remove all contaminated clothing to safeguard
against fire risk and skin damage. Wash affected
skin throughly with soap and water and remove
clothing to a safe well ventilated area and allow
to air before cleaning.
3. Contain and smother the spill using sand or
other suitable non-combustible material.
4. Do not allow fuel to escape into drains or water
courses. If this happens, contact Fire Brigade
and Local Water Authority.
5. Consult local Authority about disposal of
contaminated soil.
If fuel is accidentally swallowed:-
* Seek medical attention immediately. Do NOT
induce vomiting.
If fuel is splashed into eyes:-
* Wash out with running water for at least ten
minutes and seek medical attention.
1
FIRST AID
1
FUEL SPILLAGE
1
SAFETY
1
HEALTH & SAFETY
INFORMATION
THIS PRODUCT HAS BEEN DESIGNED
TO THE FOLLOWING STANDARDS:
EMC Directive
(Electromagnetic compatibility) 89/336/EC
Standards:
EN 61000-6-1: Electromagnetic Compatibility Generic
Standard - Immunity for residential, commercial and
light industrial environments. (Feb.2001)
EN 61000-6-3: Electromagnetic Compatibility Generic
Standard - Emission standard for residential,
commercial and light industrial environments.
(Feb.2001)
LV Directive
(Low voltage) 73/23/EEC
Standard:
IEC 60335-1: Household and similar electrical
appliances - Safety (May 2001)
Boiler Efficiency Directive 92/42/EEC
Standard:
BSEN 304: Oil boilers with forced draft burners.

2
TECHNICAL SPECIFICATION
4
2-A Diagrams
2-B Technical Specifications and Recommendations
Combi Range Dimensions
Heat Output 50-120,000 Btu/Hr
Electricity Supply 230 v - Boiler~50 Hz
To be fused at 5 amp
System Pipe Connections (on boiler)
Heating Flow 22 mm (28mm - 90-120,00 Btu/Hr)
Heating Return 22 mm (28mm - 90-120,00 Btu/Hr)
Mains Cold Water Boiler
connection 15 mm
Hot Water delivery 15 mm
Safety pressure Relief Valve
Outlet 15 mm
All Copper Tube connections: BS 2871 Copper Tube
Isolating ball valves are fitted to all boiler/system connecting pipework
H. 840mm
W. 610mm
D. 600mm
E. 640mm
F. 650mm
G. 695mm
A. 155mm
B. 750mm
C. 190mm
I. 210mm
J. 185mm
K. 135mm
L. 70mm
50-70 & 70-90 90-120
H. 840mm
W. 670mm
D. 600mm
E. 640mm
F. 650mm
G. 695mm
A. 155mm
B. 750mm
C. 220mm
I. 230mm
J. 185mm
K. 135mm
L. 70mm
I.
J.
Front View.
W.
K.
L.
H.
B.
Side View.
D.
A.
3
5
1. Mains Feed.
2. D.H.W.
3. 3bar Safety Valve.
4. C.H. Flow.
5. C.H. Return.
4
1
2
G.
F.
E.
Rear View.
C.
Top View.
C.
A.
Combi Pac
330
Dimensions
&
Plumbing Point
Dimensions
690
680
Removable slot in
base to allow access
for pipe work from
ground level
625
(1)
(2)
(3)
(4)
W
5
8
(4)
(3)
(2)
(1)
Domestic Hot
C.H. Return
Combi Pac
90
945
W= 655
A= 114
B= 142
C.H. Flow
Domestic Cold Feed
120
W= 705
A= 114
B= 162

5
2
TECHNICAL SPECIFICATION
Pressure Jet Oil Burner
Riello RDB or Ecoflam Flair or Bentone Sterling
Fuel Kerosene Class C2
Domestic Hot Water Plate
Heat Exchanger Giannoni Albion,
SWEP or
Alfa Laval
Circulating Pumps Grundfos UPS 25/60
Flue Pipe Connection
Conventional Flue Socket To take tail piece for 4”(100mm) & 5”(125mm)
S/S Flue Pipe
Balanced Flue Assembly 5”(125mm) Concentric Flue
Weight (Dry) - Incl. Pallet 50-70btu’s - 160 Kg
70-90btu’s - 162 Kg
90-120btu’s - 177 Kg
Water Content - Total 50-70btu’s - 59 Litres
70-90btu’s - 59 Litres
90-120btu’s - 68 Litres
- Primary Tank 50-70btu’s - 40 Litres
70-90btu’s - 40 Litres
90-120btu’s - 44 Litres
Thermostats
Boiler Central heating Control
(Adjustable) 65˚C - 85˚C
Boiler Safety Limit 110˚C
Tank (DHW)-Fixed 78˚C
EA-Fixed 87˚C
Over-run-Fixed 93˚C
Boiler integral Expansion
Vessel nominal capacity 12 & 14 Litres pre-charged to 1 Bar
Heating System (Sealed) Fit in accordance with BS 7074
Part I, BS 5449, OFTEC
Standards, etc.
Max. Operating Pressure 2.5 Bar (Follow all BS & OFTEC Standards)
Max. System Pressure (Cold) 1.5 Bar
Min. System Pressure (Cold) 0.5 Bar + 0.3 Bar
Boiler Test Pressure 4.5 Bar
Safety Valve Operating Pressure 3 Bar
Heating System Pressure Gauge
(mains supply excepted) 0 - 6 Bar Range
Flue Draught Reqd.
(Conventional Flue) Min: 0.040 In WG
Max: 0.15 ln WG
Water side resistance-10˚C Diff 26.8 ins WG
-20˚C Diff 8.6 ins WG
Mains Water Supply Pressure Up to 10 Bar. (Fit pressure
reducing valve as necessary)
Mains Water Supply
Limescale excess - when
over 150/200 ppm Consult Water Authority
Fit appropriate scale reducer
Also refer to Page 35
Domestic Hot Water Guide Performance
50-70,000 Btu’s - 120 Litres at 40˚ Δt at 12 Litres per minute
70-90,000 Btu’s - 120 Litres at 40˚ Δt at 14 Litres per minute
90-120,000 Btu’s - 120 Litres at 40˚ Δt at 18 Litres per minute

2
TECHNICAL SPECIFICATION
6
2-C Burner Settings Firebird Boiler Range Kerosene
Using RDB Range Of Burners (K).
2-D Wiring Diagram Combi Range
The above performance figures are based on ideal laboratory test conditions.
Air shutter settings above may need to be revised to take into consideration
difference in resistances between conventional and balanced flue installations.
Use flue gas analyser to achieve optimum results.
Variations in nozzle throughput, flue type & draught, oil viscosity etc. may
give results differing from these laboratory performance figures.
☛
☛
Range Burner Head Fuel Nozzle P.P. Air CO2 Fg. Smoke
Type Shutter Head No.
50,000 Riello RDB 1. T1 K .5 80’H 7 Bar 2.4 - 11.5 190 0-1
60,000 Riello RDB 1. T1 K .5 80’H 10 Bar 3.9 - 11.5 200 0-1
70,000 Riello RDB 1. T3 K .6 80’H 8 Bar 4.25 - 11.5 210 0-1
70,000 Riello RDB 1. T3 K .6 80’H 8 Bar 4.25 - 11.5 190 0-1
80,000 Riello RDB 1. T3 K .6 80’H 9.5 Bar 4.8 - 11.5 195 0-1
90,000 Riello RDB 1. T3 K .75 80’S 8 Bar 6 - 11.5 210 0-1
90,000 Riello RDB 2. T3 K .75 80’S 8 Bar 6 - 11.5 190 0-1
110,000 Riello RDB 2. T3 K 1.00 80’S 7 Bar 2.6 - 11.5 190 0-1
120,000 Riello RDB 2. T3 K 1.00 80’S 9 Bar 3.5 - 11.5 190 0-1
Burner
Limit Stat
C.H. Pump
D.H.W. Pump
Room Stat Loop
Early Alert Stat
12
14
22
24
32
34
Control Stat
4
3
5
7
8
9
A2 A1
1
6
11
210
11
21
31
Over Heat Stat.
C.H. Timed Switch
D.H.W. Timed Switch
Relay Tank Stat.
Flow Switch
Off
On
Timed
Timer Motor
Timer Motor
Non Energised
Energised
E
L
N

2
TECHNICAL SPECIFICATION
8
2-E&F Riello Burner Specification
Burner Description
One stage kerosene and oil burner.
In case of BF applications the intake air temperature must not be over 70C
The burner meets protection level of IP 40, EN 60529.
Burnerwith CE marking in conformity with EEC directives: EMC 89/336/EEC,
Low Voltage 73/23/EEC, Machines 98/37/EEC and Efficiency 92/42/EEC.
7. Pump pressure adjustment screw
8. Pressure gauge port
9. Photoresistance
1. Pump
2. Control-box
3. Reset button with lock-out lamp
4. Flange with insulating gasket
5. Air damper adjustment screw
6. Snorkel (BF)
Burner Equipment
Flange with insulating gasket............. No.1
Screw and nut for flange................... No.1
Grill (CF Application)........................ No.1
Bolts for flange to be fixed to boiler..No.4
Hexagonal Key................................... No.1
Screw of by-pass pump..................... No.1
Flexible oil pipe with nipple.............. No.1

The control panel is designed for simplicity of use and is equipped
with adjustable thermostat knob, optional time controls and limit
thermostat reset button as shown above. It also has a built in system
pressure gauge which is connected to the boiler and heating system
water at the safety valve.
When replacing make sure that each thermostat pocket
receives correct phial by marking and noteing carefully each
phial and its correct pocket.
2
TECHNICAL SPECIFICATION
11
2-G Control Panel Layout
The control panel is at the top front of the boiler,
there are four operational indicator lights on the
front of the boiler. See diagram below
Burner Socket
High Limit Thermostat
Reset Button
Early Alert Thermostat
Relay Base
Circ
Room
Pump
Stat
D.H.W.
Control Thermostat
Circ
Pump
C.H.
Control
2
1
Flow
Switch
C
Central Heating Timer
1
C
High
Limit
Stat.
C
2
Early
Alert
1C
31
A2
A2
34 14
L
L1
2
10
3
9
8
4
7
5
6
32
12
22
24
2L
Over Heat Thermostat
Tank Thermostat
1
1
2
Over
Heat
1
C
C
2
2
Relay
Tan k
Domestic Hot Water Timer
Connection Point For Timer
Mains Socket

3
OPERATING INSTRUCTIONS
12
3-A Boiler Controls
Visible on the front boiler casing are
• Central Heating thermostat control.
• Time control - Domestic Hot Water. & Central Heating (optional).
• Limit-stat reset button (see diagram on page 11).
• Pressure Gauge
Also indicator lights. These are:
• Mains ‘on’.
• Burner lockout.
• Domestic Hot Water
• Central Heating
3-B Operating Procedure
To start the boiler follow this sequence:
■ Turn on fuel supply.
■ Switch on power supply to boiler.
■ Set the boiler thermostat to the required temperature.
■ Set timer - Domestic Hot Water & Central Heating.
The central heating thermostat controls the boiler when in central
heating mode only, thus maintaining the required boiler water
temperature output for central heating.
Domestic hot water temperature is controlled by separate non
adjustable thermostat, plus thermostatic mixing valve. See page 15.
Safe operation is also maintained by the burner control system which
provides the required ignition and shut off sequence.
If the optional timer controls are fitted this will automatically
switch the boiler off and on when cental heating and Domestic
Hot Water is required.
The boiler can be turned off by any of the following means:
■ Turn both timer switches to OFF.
■ Turn OFF the mains electrical supply to the boiler.
WHEN SERVICING ALWAYS SWITCH OFF THE MAINS SUPPLY TO
THE BOILER

3
OPERATING INSTRUCTIONS
13
3-C Burner Lockout
The boiler is factory fitted with a burner control box lockout safety feature
which operates automatically if a fault occurs in the burners operation.
Should this occur, the RED light on the front of the boiler control panel -
See diagram on previous page - will illuminate and its cause must be
investigated. This could be caused by:
A. An interruption in the fuel supply. (Eg. empty oil supply tank)
B. An electrical supply fault.
C. A fault with the burner or its safety control system.
D. The failure of a component. (Eg. photo cell)
E. Worn or dirty oil nozzle.
Before attempting to restart the boiler the front panel and the burner cover
should be removed and a visual check made for any obvious problems such as
oil leaks, loose connections etc.
ENSURE OIL TANK CONTAINS CORRECT GRADE FUEL.
To restart the boiler
1. Press reset button (see diagram above)
2. Ensure that the boiler thermostat, time switch (if fitted) and any external
controls connected to the boiler are set to call for heat.
3. Check that the oil supply valves are open and that there
is sufficient oil in the tank.
4. Check that the burner lockout light is unlit and with the ‘MAINS ON’ the
boiler will be ready to commence its start sequence.
Servicing
The boiler requires servicing on an annual basis to ensure it maintains its
efficiency, continues to perform reliably and as a regular check on its
built-in safety features.
It is important that servicing should be conducted by a competent
engineer, one who is OFTEC trained and registered.
Please note: As a pre-heater kit maybe required to be fitted to the burner when
using 35-second gas oil (only allowed on conventional flue applications) this
means that annual servicing is usually sufficient - although more regular
servicing may be required depending on use.
To reset when Lock-out
light shows:
Press glowing reset button
on burner control box.
Reset Button
Inside Burner Box

3
OPERATING INSTRUCTIONS
15
Domestic Hot Water Operation
Hot water is available on demand by turning on a hot tap. This activates the
flow switch which powers the domestic hot water pump ensuring that all
boiler hot water is diverted to the domestic heat exchanger which heats the
incoming mains water to give instant mains pressure hot water.
Hot water is then mixed with mains cold water by a thermostatic mixing valve
set to ensure that it does not exceed 65°C. This is shown in accompanying
diagrams - Item No. 6.
The burner may continue to run after hot water draw off has ceased - to
ensure the pre-set temperature is restored in the heat store. This may also
occur at any time if the control system senses that there is a need to
replenish the heat store, i.e. if there has been natural temperature drop in
heat store during long periods of low demand for domestic hot water.
Programming Guide
SETTING UP
The outer dial should be set to the current time. Rotate the dial slowly
in a clockwise direction, until the correct hour is aligned with the arrow
head printed on the dial. Note that the outer dial is printed with the 24
hour clock 8:00 a.m. = 8 on the dial. 8:00 p.m. = 20 on the dial.
Do not attempt to rotate the dial in an anti-clockwise direction.
PROGRAMMING SWITCHING TIMES
Set all tappets between the on and off times required, to the outer
edge of the dial (see figure 1). E.g. to set on at 8:00 a.m. - Off at 1:00 p.m.
push tappets between dial numbers 8 and 13 to outer edge of dial. Set any
other required switching times in a similar manner.
MANUAL SWITCH
Manual switch operation: The manual switch will provide Fixed On / Fixed
Off / Auto control, thereby allowing manual control of the switched output
without disrupting the timed (tappet) settings. Please refer to the illustration
above.
The slide switch can be set in one of the three positions available ‘on’ and ‘off’
are fixed selections - the timer will remain in the on or off condition until you
next use the manual switch to change the setting. ‘auto’ is the normal position for the switch, allowing control to be governed by the tappet settings in accordance with ‘programming switching times’ above

4
INSTALLATION
16
4-A Standards & Regulations
To ensure the highest standards of installation & safety, it is important
that the boiler be installed in compliance with the following regulations
where applicable.
All CURRENT editions of the appropriate Building Regulations:-
Part G & J England & Wales
Part F, Section III Scotland
Part L Northern Ireland
Part J Republic of Ireland
BS 5410 Part 1 1997. Code of practice for Oil Firing Installations.
BS 799 Part 5 1987. Specification for Oil Storage Tanks.
BS 4876 1984. Performance requirements for oil burning appliances.
BS 5449 1990. Specification for Forced circulation hot water central heating
systems for domestic premises.
BS 7074 Part 1 1989. Application, selection and installation of expansion
vessels and ancillary equipment for sealed water systems.
BS 5446 1990. Installation of hot water supplies for domestic purposes.
BS 7593 1992. Code of Practice for treatment of water in heating systems.
BS 715 1989. Metal flue pipes, fittings, terminals and accessories.
BS 1189 1989. Clay flue linings and flue terminals.
BS 4543 part 3 1990. Factory made insulated chimneys for oil fired
appliances.
BS 6700. Design, installation, testing and maintenance of Services supplying
water.
BS 7671.
Current lEE Regulations.
Local Water Undertaking Byelaws.
The Control of Pollution (Oil) Regulations.
In addition, the work must comply with OFTEC Installation
Requirements for oil fired boilers and oil storage tanks.
The installer should also be aware of his/her responsibilities under The
Health and Safety at Work Act. The interests of safety are best served if the
boiler is installed and commissioned by a competent engineer, OFTEC
trained and Registered or trained to other recognised standards.
It is the responsibility of installer and everyone concerned with any aspect
of installation to ensure that all applicable standards and regulations are
fully adhered to.
OFTEC also publish excellent guides including:-
- Safe Working Practices for Oil Firing Technicians'
- OFTEC Technical Book Three (Installation requirements for Oil Fired
Boilers and Oil Storage Tanks)
- OFTEC Technical Book Four (Domestic Heating Systems)
and it is recommended that these should be adhered to.
Copies of British Standards may be purchased direct from:
BSI (Customer Services), 389 Chiswick High Rd.,
London W4 4AL
Tel.: 0181-9967002 Fax: 0181-9967001
International and EC Standards are also available from above
OFTEC Publications are available from:-
OFTEC,
Oil Firing Technical Association,
Foxwood House, Dobbs Lane,
Kesgrave, Ipswich.
IP5 2QQ
☛
☛

4
INSTALLATION
17
4-B
Positioning Boiler
Ensure that adequate clearance is available for making
the water and flue connections.
As the boiler is serviced from the front,
no headroom clearance is necessary but a clearance of 750mm must be
available at the front of the boiler.
No special hearth is required as the boiler is fully insulated, but the floor
must be level and capable of supporting the weight of the boiler and its
water content.
Sound levels must also be a consideration. Whilst the Firebird Combi Range
are one of the quietest boilers on the market, some householders are
particularly sensitive and the following points should be considered:
1. Tiled surfaces in a small room will amplify noise - particularly if the wall
construction is hollow.
2. If a conventional flue passes through a bedroom it is capable of
transmitting noise.
3. Low level balanced flue terminals can produce exhaust noise on the
outside terminal and this should be considered when siting near adjacent
property.
4. Firebird do not recommend the use of a low level flue’s on
white cased indoor boilers.
5. The Firebird low level concentric flue kit has been specifically designed
for Firebird’s indoor boilers. The use of third party low level flue kits
is not recommended and may affect its warranty.

4
INSTALLATION
18
4-C Flue Systems
IMPORTANT
Because of the improved efficiencies of boilers under E.U. Efficiency
requirements and OFS A100 Standard, it is necessary to pay extra special
attention to flues and chimneys. The improved efficiency figures achieved
by modern oil boilers are attained by using more of the heat (higher
temperatures) heretofore allowed into flues and chimneys. This previously
wasted heat helped to keep bad and poorly operating and often uninsulated
flues and chimneys from condensing and causing problems. Please be fully
aware of this when replacing an existing boiler. An old and poorly operating
flue may need to be replaced to take full advantage of improved efficiencies
and to avoid flue gases condensing and appearing as white water vapour
(pluming) at flue (chimney) outlet.
New flues and chimneys should be properly insulated and constructed to
prevent condensation and draughting problems. Every individual concerned
with any aspect of installation should be aware of the foregoing and should
have full knowledge of and work to European, National and Local Govt.
Standards and Building and Installation Regulations.
These manufactures instructions must not in any way be mis-interpreted as
over-riding the above or any statutory regulations. It is absolutely essential
that the boiler is properly installed so that NO FLUE GASES can enter the
building at any time. Flue pipes should be safely sealed into the wall to
prevent flue gases re-entering room or building. Refer also to page 23.
Conventional Brick Chimney With Liner
NOTE:
All brick chimney constructions must com-
ply with current building regulations and
BS 5410: Part 1. Insulated factory made
chimneys should comply with BS 4543.

4
INSTALLATION
19
4-D Balanced Flue Siting
Notes: 1. The terminal should be positioned to avoid combustion
products entering the building or accumulating in stagnant
pockets around buildings.
2. The terminal must be protected by a guard if it is less than 2
metres above ground level or in a position where any person
has access to it (i.e. a balcony).
3. A heat protection shield should be fitted if the terminal is less
than 850mm from a plastic or painted gutter or less than
450mm from painted eaves.
Always check for any Building Regulations amendments which may
have been issued after the publication of this manual
A. Below a gutter or
sanitary pipework.
B. Horizontal from
opening, airbrick,
window etc.
C. Above ground or
balcony level.
D. Below eaves or
balcony
E. From an internal
or external corner.
F. From a terminal
facing the terminal.
G. From a surface
facing the terminal.
H. Vertical from
terminals on
the same wall.
I. Horizontal from
terminals on the
same wall.
J.Below an opening, airbrick, window etc.
K. From vertical sanitary pipework.
L. Vertical flue from wall.
Book three Nov. 1997
ABCDEFGHI J K
England & Wales 1991 - 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 1994 - 600 - - 600 - - - - 600 -
Republic of Ireland 1997 - 600 - - 600 - - - - 600 -
*Where the terminal is within 1 metre of any plastic material, such material should be protected from the
effects of combustion products of fuel. 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.
NOTE: The Buildings Regulations clearances shown above are minimum allowed. Account should
also be taken of prevailing site conditions, as the above minimums may in certain circumstances
need to be increased. If in doubt contact manufacturer for advice.
See note at foot of page
Building Regulations
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20
Minimum distances to terminals in millimetres as measured from top of the chimney
or the rim of a low level discharge opening
A Directly below an opening, air brick, window etc 600
B Horizontally to an opening, air brick, window etc 600
C Below a gutter, eaves or balcony with protection 75
D Below a gutter or a balcony without protection 600
E From vertical sanitary pipework 300
F From an internal or external corner 300
G Above ground or balcony level 300
H From a surface or boundary 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
M Above the highest point of an intersection with the roof 600
N From a vertical structure on the side of the terminal 750
0 Above a vertical structure less than 750mm from the side of the terminal 600
P From a ridge terminal to a vertical structure on the roof 1500
These notes form an integral part of the information shown above.
1. Terminals should be positioned so as to avoid products of combustion accumulating in stagnant pockets
around the building or entering into buildings.
2. Appliances burning Class D oil have additional restrictions.
3 Vertical structure in N, 0 and P include tank or lift rooms, parapets, dormers etc.
4. Terminating positions A to L are only permitted for appliances that have been approved for low level flue
discharge when tested to OFS A1OO or A1O1.
5. Terminating positions must be at least 1.8 metres distant from an oil storage tank unless a wall with at least
30 mins fire resistance and extending 300mm higher and wider than the tank is provided between the tank
and the terminating position.
6. Where a flue is terminated less than 6OOmm away from a projection above it and the projection consists
of plastic or has a combustible or painted surface, then a heat shield of at least 750mm wide should be
fitted to protect these surfaces.
7. For terminals used with vapourising burners, a horizontal distance of at least 2300mm is required between
the terminal and the roof line.
8. If the lowest part of the terminal is less than 2 metres above the ground, balcony, flat roof or other place to
which any person has access, the terminal must be protected by a guard.
4
INSTALLATION
Clearances advised by the British Standards for Open, Low Level
Discharges and Balanced Flues fitted to Oil Fired Boilers
4-D

4
INSTALLATION
21
4-E Ventilation and Combustion Air
1. Conventional Flue Boilers
An adequate supply of combustion and ventilation air is essential for
efficient and safe boiler operation and the openings for this should be
positioned to cause least possible draught, with no possibility of being
accidentally blocked.
Please note: The British Standard Code of Practice for Oil Firing BS5410:
Part 1, requires a permanent air inlet opening of
550mm
2
per kW (above 5 kW)
of boiler rated output. (Note: 1kW = 3412 Btu/h).
Also, when the boiler is installed in a compartment or confined space,
ventilation openings are required to ventilate and to avoid overheating in
the boiler area.
FULL TEXT of both BS 5410 Part 1: 1997 and appropriate Building
Regulations for each country should be obtained and fully applied
N.B. Please Carefully Note:
A. For boiler installations in domestic garages in Scotland, Part F of
Building Regulations permits only Room Sealed appliances to be used (Ref.
OFTEC Bk. Three May 1999 page 1 (18).
B. Technical annex T1/127 to OFTEC Book Three, May 1999 page 2
(19) Para. 1, 2 states “In Scotland and the Republic of Ireland only Room
Sealed Balanced Flue Appliances can be used in that
location” (i.e. domestic garages).
Definitions
Combustion Air : Air required directly by boiler oil burner for combustion
process.
Ventilation Air : Air required in room for ventilation, cooling, etc. and to
promote a healthy living environment.
Conventional open flue (a) or open flue low level discharge (b)
Combustion & Ventilation air supply for conventional
open flue boilers
The figures shown are free areas of grilles in mm2 per kw of appliance rating (output).
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4
INSTALLATION
22
4-E
2. Balanced Flue Boilers
The Firebird boiler may be set for Room-sealed balanced flue operation using
a Firebird balanced flue kit and then does not draw combustion air from
inside the room. It is drawn from outside direct to burner by airpipe
supplied with boiler. Flue gases are expelled in the same way. However, if
the boiler is installed in a compartment or small room, some ventilation air
is necessary to maintain acceptable temperature in boiler area
4-F Domestic Heating & Hot Water Systems
HVCA Codes of Practice and BS 5449: Part 1 “Forced Circulation Hot Water
Systems” should be adhered to when installing the boiler. Refer also to
Regulations and Standards listed on page 14.
Electrical Supply
The boiler and controls require 230V 1 phase 50Hz electric supply
with a 5amp fuse.
THIS APPLIANCE MUST BE EARTHED.
A qualified electrician must carry out all electric wiring in accordance with
current I.E.E Regulations and any local regulations which may apply.
The mains electrical supply must be taken from a double pole isolating switch
with a 5amp fuse, positioned somewhere close to the boiler. Heat resisting
cable must be used which can be routed into the boiler through the access
provided on either side of the base.
Ancillary controls may be provided for with terminal connections
in the control panel.
Balanced flue boiler in room (eg. kitchen) does not require individual ventilation.
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BALANCED - FLUE BOILERS IN COMPARTMENTS

5
OIL SUPPLY
23
The boiler burner is factory set to use 28-second kerosene. However, Gas oil
35-second can be used with a conventional flue installation if a
PRE-HEATER is also fitted. Note: Gas Oil 35sec may not be used
with a balanced flue installation.
If boiler location allows use of 35 sec.Gas Oil, pump pressure should be
increased and air settings readjusted as necessary. This adjustment should
be carried out by qualified persons only.
5-A Oil Storage Tank Siting
Consult OFTEC Manual
It is very unlikely that a fire should start from a domestic oil tank,
however it does need to be protected from a fire which may originate
in a building nearby. For this reason, the tank should be located at least
1.8 metres from any building and no closer than 760mm from any
boundary. If it must be closer than 1.8 metres, the building wall
should not have any openings other than ventilation openings. In addition,
the wall should have a half hour resistance to an internal fire and
extend 1.8 metres from any part of the tank.
A non-combustible radiation barrier is an alternative but this must meet the
requirements of BS 5410 Part 1: 1994, “clause 28” Section 6.4.
Steel tanks must be mounted on brick or block piers with a waterproof
membrane between the piers and tank.
Polyethylene tanks do not need pier supports and may be mounted on any
flat surface which can support the weight of the tank and its contents. They
also do not corrode and never require painting.
Oil storage tanks should not be sited close to boiler flue outlets.
Do not allow household waste or hot ashes container in vicinity of oil
storage tank or boiler flue outlet.
5-B Flexible Oil Pipe(s)
A flexible burner oil hose is supplied with the boiler.
Please note: A filter must not be fitted inside the boiler and all joints in
the oil line must be oil-tight. Soldered joints are not permissible.
Before connecting to the boiler always flush the complete oil supply
line and ensure that oil supply is completely clean and free of any dirt
or foreign matter.
5-C Single Pipe System
Where installations have the bottom of the tank above the oil burner, a
single pipe system may be used.The oil burner should then be set for single
pipe operation - See
also manufacturers oil burner manual
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5
OIL SUPPLY
24
5-D Two Pipe Systems
Where installations have the bottom of the tank below the oil burner pump
a two pipe system is required. Ensure that valves and filters are not fitted in
the return line as this must be unobstructed at all times.
The oil burner pump should be set for two pipe operation as detailed in
accompanying oil burner manufacturers manual, refer also to page seven of
this manual - section 2E+F
5-E Tigerloop Single Pipe Systems
IMPORTANT: The Tigerloop should not be fitted inside the dwelling - See
drawing below and OFTEC manual book 3 page 2(10)
Where installations normally require a two pipe system but have long or
impractical return line runs, a ‘Tigerloop’ De-aerator can be used which
removes air from a single - pipe - lift oil feed. Higher lift heights can be
achieved than are possible with conventional two pipe systems.
The oil burner pump should be set for two pipe operation.
Individual Tigerloop instructions must be implicitly followed.
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6
FLUE SYSTEMS
25
6-A Important Notice
Because of the improved efficiencies of boilers under E.U. Efficiency requirements and
OFT A100 Standard, it is necessary to pay extra special attention to flues and chimneys.
The improved efficiency figures achieved by modern oil boilers are attained by using
more of the heat (higher temperatures) heretofore allowed into flues and chimneys. This
previously wasted heat helped to keep bad and poorly operating and often uninsulated
flues and chimneys from condensing and causing problems. Please be fully aware of this
when replacing an existing boiler. An old and poorly operating flue may need to be
replaced to take full advantage of improved efficiencies and to avoid flue gases
condensing and appearing as white water vapour (pluming) at flue (chimney) outlet.
New flues and chimneys should be properly insulated and constructed to prevent
condensation and draughting problems. Every individual concerned with any aspect of
installation should be aware of the foregoing and should have full knowledge of and
work to European, National and Local Govt. Standards and Building
and Installation Regulations.
These manufactures instructions must not in any way be mis-interpreted as over-riding
the above or any statutory regulations. It is absolutely essential that the boiler is properly
installed so that NO FLUE GASES can enter the building at any time. Flue pipes should
be safely sealed into the wall to prevent flue gases re-entering room or building
Refer also to page 16.
PREPARING BOILER FOR CONVENTIONAL
CHIMNEY/FLUE OPERATION
Before installing boiler in the above mode please ensure:
A. That chimney flue is cleaned, draughting adequately, lined if necessary and
not subject to downdraughts.
It is emphasised that boiler and flue should be
connected properly in a manner which will not allow flue gases to enter room or
building at any time from any part of the installation.
B. That adequate unrestricted air for combustion and ventilation is provided to
room in which boiler is situated - see diagram pg.20 & 21.
C. That there is no extractor fan capable of
causing negative pressure in boiler room resulting in
burner malfunction and flue gases being drawn back
into boiler room.
Conventional Flue Installations-
1. Remove blanking plate from top panel by
pulling backwards.
2. Fit trim sleeve to flue pipe (if supplied).
3. Slide upwards and ‘park’ it out of the way
4. Fit flue pipe into boiler socket and properly seal with high
temperature silicone mastic or non-cracking fire cement.
5. Fit white enamel top panel
6. Fit cut-out cover plate behind flue pipe (shown in diagram)
7. Slide trim sleeve down against top panel
(If Supplied)
ENSURE UNRESTRICTED AIR-SUPPLY TO BOILER ROOM. No further
adjustments are required for adequate combustion-air supply. Check burner
operation when installation is completed, use burner Combustion Analyser
to ensure correct performance.
Consult separate burner manual supplied with boiler.
B
26-A
26-B
A

6-B Balanced Flue System
IMPORTANT: THE INSTALLER MUST EXAMINE THIS
ILLUSTRATION CAREFULLY BEFORE PROCEEDING WITH
INSTALLATION.
ENSURE UNRESTRICTED AIR-SUPPLY TO BOILER ROOM. No further
adjustments are required for adequate combustion-air supply. Check burner
operation when installation is completed, use burner Combustion Analyser
to ensure correct performance.
Consult separate burner manual supplied with boiler.
6
FLUE SYSTEMS
26
High level Balanced Flue,
Right Hand Outlet,
Left Hand Outlet,
Rear Outlet and Top Outlet.
Balanced Flue,
Right Hand Outlet,
Left Hand Outlet
and Rear Outlet.
• Firebird do not recommend the use of a low level flue’s on
white cased indoor boilers.
• The Firebird low level concentric flue kit has been specifically designed
for Firebird’s indoor boilers. The use of third party low level flue kits
is not recommended and may affect its warranty.
Locating points
for fixing air box
to flue pipe
GAS
GAS
GAS
GAS
GAS
GAS
GAS
GAS
GAS
GAS
GAS
GASGAS GAS GAS
GAS
Push the flue adaptor
in to flue coller
Push the flue pipe through
the 125mm hole in the wall.
Secure the flue adaptor to
the Boiler.
Apply high temperature sealant
to the inside of flue coller.
Apply high temperature sealant
to the O ring on the inner flue pipe
to insure a positive seal.
IMPORTANT:
A 50mm - (2inch) gap
must be left between
cone cowl and wall.
Ensure Combustion air
pipe protrudes beyond the
outer surface of the wall.
M8 x 130mm Bolt
M8 Washer
M8 Fiber Washer
Ceramic Gasket Seal

6
FLUE SYSTEMS
27
INSTALLATION INSTRUCTIONS
SUPPLIED WITH FLUE KITS
5” (125mm) O.D. Concentric flue Firebird S
70,000 - 90,000 and 120,000 btu’s Boilers.
IMPORTANT:
A 50mm - (2 inch) gap
must be left between
cone cowl and wall.
Flue Extension
6-C Concentric Flue System
Assembly for concentric flue when
going side outlet on White cased boiler
Secure the flue adaptor
to the Boiler, ref dwg 4
and the air box to the
flue pipe ref. dwg 3.
IMPORTANT:
A 50mm - (2inch) gap
must be left between
cone cowl and wall.
Ensure Combustion air
pipe protrudes beyond the
outer surface of the wall.
Apply high temperature sealant
to the O ring on the inner flue pipe
to ensure a positive seal.
Push the flue pipe through
the 125mm hole in the wall.
Flue Extension For
Right Hand Outlet Combi.
Flue Extension

7
COMMISSIONING
28
Note: Commissioning must be carried out by a
OFTEC qualified service engineer. (U.K. Only)
It should be noted that it is the responsibility of the installer to ensure
that the boiler is properly commissioned. Failure to do so may
invalidate the boiler guarantee and any extended warranty.
7-A Procedures
1. Oil Tank
The installation of the oil tank and supply line should comply with all the
instructions shown earlier in this manual. Consult OFTEC Manual - Book
No. 3, Section 2.
If a single supply line is used ensure that the bottom of the tank is above
the burner. A two pipe system should be used where the level of the oil in
the tank may fall below the level of the oil burner pump.
Check and ensure correct grade fuel oil has been supplied.
2. The Burner
A Tigerloop single pipe system may also be used in low-level tank
installations. See page 21 Section 5. Please flush out oil pipe by drawing off
some oil before connecting fuel pipe to burner - otherwise there is a danger
of grit and dirt being forced into the burner pump, resulting in pump
blockage, damage and ‘lock-out’
3. The Boiler
A. Switch off the power supply, ensure that the boiler and system is full of
water, all valves are open and that installation conforms with all Standards,
Regulations and Instructions.
B. Check that boiler baffles are correctly positioned.
C. Check the oil supply by disconnecting the oil supply hose at the burner
and running off a quantity to ensure it is free from air. then bleed air from
burner pump. Refer to section 2, page 7, sketch C, Item-E.
D. If fitted, check that the time switch is ‘ON’ and that both room and
boiler thermostats are calling for heat.
E. Reconnect electrical supply and the boiler should start. If the burner
lock-out activates, this suggests air in the pump. Wait a minute or so and
try again. If lock-out occurs again, air must be bled from the pump pressure
gauge connection point once more.
F. View the burner flame through the sight glass - it should be bright
cream/yellow without any sign of smoke.
G. Run the boiler for about fifteen minutes then take a CO
2
reading and
adjust as necessary.
7-B Handing Over
A thorough check of the system should be made, then the householder
should receive a clear and concise demonstration of the boiler
operation and any system controls.
This manual and burner manufacturers manual plus any other
instructions should be handed over to the user, the guarantee card
should be completed and posted, and the user advised about the
importance of annual servicing.
Commissioning Record - Page 54 - should be completed and a copy
kept in engineers file.

8
SERVICING
29
Note: Servicing must be carried out by a
OFTEC qualified engineer. (U.K. Only)
8-A Recommended Service Intervals
28 second oil Once annually
35 second oil Once annually
Ensure that 35 secs fuel oil is only used where allowed by regulations.
Burner should then be re-set for this fuel. Before carrying out a service
it is recommended that the following
is checked:
A). Smoke
B). CO
2
C). The flue gas temperature
D). Oil pressure
E). Ensure flue is unrestricted & operating properly
At the same time check for oil and combustion leaks. Advance to service
ONLY after ensuring that both electric and oil supply to boiler is
disconnected.
8-B The Oil Tank
Draw off any accumulated water and sludge from the tank by opening the
drain cock. Turn off the oil supply and remove the filter bowl, then wash the
element clean with kerosene.
8-C The Boiler
Remove combustion access door for access to baffles and to
clean heat exchanger.
Check insulation sealing and its silver foil lining in combustion access door -
replacing when necessary. When refitting this door be careful not to dam-
age the foil and insulation by over tightening.
8-D The Burner
Check performance of oil-nozzle and replace as necessary.
Ensure correct specification replacement nozzle is used.
Check all oil filters and replace as necessary.
Remove burner and clean blast tube and ensure that airways are clear.
Ensure electrodes are clean, dry, not broken and are set as per burner speci-
fications.
Clean fan and photocell.
Once again check flexible oil lines and connections for damage or
leaks, replace as necessary.
Combustion Check
Carry out combustion analysis and ensure that boiler is performing to speci-
fication outlined in manual. Flue conditions may cause deviation from these
figures.
Always keep careful record of flue gas analysis results
including any verbal and written advice to customer (householder).
Always check carefully for restricted or blocked flue. If possible record
CO levels and advise customer of need to keep boiler room well
ventilated.
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DOMESTIC HEATING AND HOT WATER
SEALED HEATING CIRCUIT
The system must comply with BS 7074 Part 1 and BS 5449 Part 1 with a maximum water
temperature of 80˚C.
* A manual reset overheat limit thermostat is located at the rear of the electrical control panel (see
page 11). If a boiler overheat condition arises the burner will stop and remain inoperative until this
thermostat reset button is depressed.
* A pressure relief valve to BS 6759
operating at 3 bar (45 lb/in
2
) is fitted.
A discharge pipe of 15 mm diameter is
also fitted to the discharge connection
on the pressure relief valve. During
installation an extension pipe should
be fitted to this, leading, to outside the
building. The pipe should be as short
as possible and may need a tundish
fitted in a protected position within the
building.
Alternatively, if acceptable, it may
discharge within building. In this case
the discharge pipe outlet end, should
terminate within 100 mm above inside
floor level, and be in a visible and
accessible position. No tundish is
necessary in this position and
householder should be advised that this discharge end should always remain open. In every case it
should be directed downwards away from any electrical components or where it could cause a
hazard to the user/occupier. See diagram above.
Note:- Water must not discharge above an entrance, window or where public have
access. The installer must be aware that the discharge may be boiling water.
* A drain cock must be fitted at the lowest points in the system to enable draining as necessary.
A drain cock is already fitted at the bottom of the boiler heat store to enable draining of boiler and
tank unit only. All pipes connected to boiler should have shut off valves fitted to facilitate this.
* A Pressure gauge, having range 0 to 6 bar is fitted to boiler control panel. This indicates water
pressure in boiler and system at time of reading. Pressure when cold should be 1 bar
minimum to 1.5 bar maximum. This is known as Initial System Design Pressure (Pi).
32

A manually adjustable red pointer is also fitted on the protective
glass of pressure gauge. This has a screwdriver slot. When
system is cold and filled to Initial Fill Pressure Pithis pointer
should be rotated to read exactly as black pointer on dial.
This should not be subsequently altered. If system pressure,
as indicated on black pointer on dial, falls below that indicated by red pointer when system and boiler are cold this
means that Initial System Fill Pressure has dropped. Refill
system until indicated pressure rises to the same as red
pointer indicates - in this case 0.7 bar, as shown on
accompanying pressure gauge sketch. Sketch also shows
black pointer indicating maximum final system design
pressure (Pf).
N.B. Initial System Design Pressure (measured in
bar) equals static head of system (measured in bar) plus 0.3.
* A 12 or 14 litre expansion vessel is fitted to boiler, precharged with air or nitrogen to 1 bar which
allows a system static head of 5 metres. If the static head is greater than this then the air charge
in the vessel must be increased to balance the higher static head. The air charge should not
exceed a pressure of 1.5 bar.
The Firebird Combi Boiler’s with built in Expansion Vessel’s having an initial air charge pressure
of 1 bar. If total water content of system is greater than the capibilities of the vessel supplied then
an additional vessel will be required to be fitted to the return pipe as close as is practicable to the
boiler. There should be no valves or restrictions between vessel and boiler.
See page 34 for vessel sizes.
If static head is altered then it is also necessary to alter air charge pressure to equal static head
(+ 0.3 Bar). This is necessary in order to keep system water from entering expansion vessel until
system is being heated and thus allow its maximum acceptance volume (V) to be used only to
accommodate the expansion of system water during boiler operation.
Remember that air charge pressure must be equal in both vessels (attached to the same
system). In the above example this is 1 bar. Air charge pressure is the air pressure in expansion
vessel before system is filled. It is measured with a tyre gauge attached to Schrader valve on the
vessel.
N.B. N.B. With heating system up to full working temperature, if the final system
design pressure (Pf) reads more than 2.6 bar, as indicated on control
panel pressure gauge, then it is likely that:
(a) Total system water content is greater than that calculated and if
additional expansion vessel has been fitted it should be replaced
with a larger unit
OR if integral boiler expansion vessel only is used then an
additional expansion vessel is required.
(b) Static head may be higher than calculated. In this case it is
necessary to re-measure static head and revise expansion vessel
air charge pressure.
(C) Expansion vessel incorrect size or air charge pressure incorrect.
Refer to BS 7074 Part 1 and BS 5449 for further information.
33
B
A

DOMESTIC HEATING AND HOT WATER
EXPANSION VESSEL AND SYSTEM REQUIREMENTS
Safety Valve Setting 3 bar
Initial System Pressure 0.5 bar 1.0 bar 1.5 bar
Total Water Content of System TOTAL VESSEL VOLUME **
Litres Litres Litres Litres
25 2.1 2.7 3.9
50 4.2 5.4 7.8
75 6.3 8.2 11.7
100 8.3 10.9 15.6
125 10.4 13.6 19.5
150 12.5 ->[16.3]<- 23.4
175 14.7 19.1 27.2
200 16.7 21.8 31.2
225 18.7 24.5 35.1
250 20.8 27.2 39.0
FOR FURTHER INFORMATION CONSULT APPROPRIATE TRAINING MANUALS
AND BS 7074 PART 1, BS 5449, ETC
* * When calculating size of any additional expansion vessel required, remember to deduct
the boiler expansion vessel volume of 10 litres from the calculated
total system vessel volume required, as given in above table.
EXAMPLE: using above table
If ............................Total water content of system - 150 litres
And ....................Initial system pressure required is - 1.0 bar
Then ..................Vessel volume required [from above table] - 16.3 litres
But ......................Vessel supplied with boiler - 10.0 litres
Therefore ....Additional vessel required - 6.3 litres (minimum)
(For this system of 150 litres - total water volume)
..Nearest available stock size for additional vessel required, at 1 bar initial system pressure
(taken from above table) is 8 Litres.
It is emphasised that the installer should be fully acquainted with sealed system installation and
operation, calculation of total system water volume, determining of initial system pressure
required and calculation of any additional expansion vessel volume required.
NB .. Ensue that all expansion vessels in the same system are set at EQUAL air charge pressures.
34
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DOMESTIC HEATING AND HOT WATER
Domestic Hot Water Circuits
The final 600 mm mains water supply should be of copper tube to BS 2871 Part 1. Ensure that any
capillary fittings used are of lead free solder variety. For user comfort the mains pressure at taps
should be between I and 5 bar. If it exceeds this it is advisable to fit a pressure reducing valve
adjusted to reduce pressure to an acceptable level within above range. To ensure user comfort and
satisfaction it may be advisable to discuss foregoing with householder. Where long hot water
supply-pipe runs are used these should be insulated to prevent rapid cooling of residual hot water
after draw off is completed.
If the boiler is fitted in a hard water area check that hardness does not exceed 200 p.p.m. by
testing with a standard test strip. Immerse test strip in flowing tap water for one second. Shake off
excess water. Check strip after approximately fifteen seconds. If three or more zones have changed
colour the water hardness is over 200 p.p.m. (Read instructions on test strip package). Fitting
of an in line scale inhibitor is then necessary.
Failure to check water hardness and fit appropriate water softening equipment will result in
scale build up and consequent reduction in water heating performance. Check with local
Water Authority if in doubt.
Hot and Cold taps, mixing valves and fittings must be suitable for operating at mains pressure up
to 10 bar Bidets with the supply of hot and cold mains water are permitted if they are of the
over-rim flushing type and have shrouded outlets which enable them to have temporary hand held
spray attached. Showers of loose headed or flexible type must be fixed so that the head cannot fall
closer than 25 mm above the top edge of the bath to prevent it immersing into the bath water.
Alternatively the shower should have an anti-syphoning device incorporated at the point of the
flexible connections.
Water Flow Regulation
The flow rate of water from individual taps may be affected by any of the following:-
1. Number of taps in use at one time
2. Cold mains pressure
3. Diameter and length of pipework in the domestic water circuits within the dwelling.
4. Excessive flow from 3/4” bath taps in a house system converted to mains water supply.
It is recommended:A. To ensure that the mains water connection to the appliance is the first connection from
the mains on entering the dwelling.
B. Where flow starvation is encountered that flow restrictors or balancing valves are fitted
at supply outlets.
* The boiler has circulating pumps fitted therefore no other is normally required. They are
factory set at maximum output. This setting should not be altered on the domestic hot
water pump as production of domestic hot water may be adversely affected.
35
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SYSTEM FILLING, TESTING AND MAKE-UP
Introduction
Mains cold water is supplied through the boiler pipework to two separate circuits operating at
different pressures.
Circuit One
This is the Radiator Heating System including boiler and primary tank which is filled from mains
supply via flex filling loop (Page 45) within boiler to a pressure determined from system static head,
expansion vessel size and system water volume.This flexible filling loop should be disconnected
when boiler and system are filled and checked, See diagrams below.
Circuit Two
This is the domestic cold water supply through the boiler plate heat exchanger via domestic hot
water pipework direct to hot taps. This works at full mains pressure or if this is excessive at a
reduced pressure controlled by a mains pressure reducing valve to a pressure acceptable to
householder and satisfactory for the correct operation of Combi Boiler System.This mains pressure
reducing valve is not supplied with boiler, but will be available from a local supply merchant.
36
System filling should take place slowly and can be done by either of the following methods:-
Manual Filling
The Firebird Combi 90 comes with this system built into the appliance. It consists of a flexible hose
connection with a butterfly shut off valve at each end and a double check valve assembly at boiler end. To
conform to requirements of BS 7074 Part I and local water Authority Bye Laws, the flexible hose should be
disconnected at one end when filling has been completed and checked. Two end caps are supplied and should
be fitted to disconnected ends as a safety precaution against inadvertent opening of ball valves.
Pressure gauge on Control Panel should be checked
occasionally when system is cold. Refill to initial fill
pressure if necessary. Should this be a frequent
occurrence, complete system should be checked for
leaks.
Automatic Filling
Automatic System filling may be made with a feed and make-up cistern connected through a double check
valve and stop valve assembly to the return side of the heating system as close to the boiler as is practicable.
This cistern should be located above the heating systems highest point to give a minimum static head of
300 mm between it (highest point) and cistern. The manual filling system fitted to boiler should then be
disconnected and connection points blanked off.
This system has the advantage of automatic water
make-up in the event of system pressure loss due to air
elimination and minor leaks. In any case control panel
pressure gauge should be occasionally checked.
Remember also to check air fill pressure of
Expansion Vessel when system is cold using
standard tyre gauge connected to Schrader
air valve on vessel.
NOTE: There shall be no direct connection to the mains, even with the use of
a non-return valve without the permission of Local Water Authority.
* It is recommended that an inhibitor be added at the time of final fill to
protect the System from corrosion. Ensure that this is carried out in
accordance with inhibitor manufacturers instructions. Installer should
ensure that inhibitor used is suitable and that it will have no adverse effect
on Expansion Vessels diaphragms or any other part or component of the
system.
Method A
Method B

SYSTEM FILLING, TESTING AND COMMISSIONING
* Before proceeding to filling, ensure that electricity supply is switched off at mains
to avoid any possibility of time switch operating and passing power to appliance
prior to filling.
Filling and Testing
Check that all connections, especially compression joints, are fully tightened. Re-check and
ensure that pressure vessel air charge is correct, then fill system with water via filling system
used. Turn off water supply before system pressure reaches safety valve operation point of
3 bar. (Say 2 to 2.5 bar). Vent system via all manual air vents including circulating pumps,
boiler, radiators, system high points. etc. Check that dust caps are loosened on auto air vents,
keep constant check on system pressure gauge (fitted to control panel). If pressure has dropped
readmit water to above pressure. Ensure all appropriate boiler and system valves are open.
With water supply turned off, thoroughly flush out boiler and system to remove all foreign
matter before allowing boiler and pumps to operate. If in doubt drain system and repeat above
procedure. At this stage flushing-out water should be clean and clear of all foreign
matter.
Refill the system and again vent at all points as described above. Examine the complete system
for water leaks having pressurised it to 1.5 - 2.5 bar. Correct any leaks, then check operation of
safety valve by admitting further water until this valve operates. This should occur when system
pressure rises to between 2.7 and 3.3 bar. When satisfied with valve operation, and with mains
water still turned off, draw off sufficient water until initial system design fill pressure (Pi). (cold
fill) is established (0.5 - 1.5 bar - as calculated for system). The red pointer B
on pressure gauge should then be set at this initial system design pressure
(Pi), i.e. system static head +0.3
Remember that initial cold fill pressure can only be checked when
system water has properly cooled down. Check that final
operating pressure (Pf) is under 2.5 bar with all radiators turned
on and up to highest working temperature. Should system
operating pressure exceed this, check:
1. That initial cold fill pressure is correct and , if additional
expansion vessel is fitted, that pressure is equal in each vessel,
2. That expansion vessels are sized correctly.
Special attention should be given to existing heating systems where Firebird Combi
boiler has replaced an existing unit. Extra effort should be made to ensure that all original
pipe work and radiators are repeatedly flushed. If possible use a proprietary cleansing
agent suitable for system as loosened scale and foreign matter can
seriously reduce domestic hot water performance and pump
efficiency.
Use corrosion inhibitor of suitable type.
37
B
A

41
10
SPARE PARTS-BURNER
10-A Burner Parts Illustration
Riello RDB Burner
Riello RDB Burner Parts
No. Code Spare Parts Description
1 • • • 3008512 Gasket
2 • • • 3006384 Flange
3 • 3002507 Cup-Shaped Head
3 • • 3002447 Cup-Shaped Head
4 • • • 3007513 Electrode Assembly
5 • • • 3006552 Electrode Bracket
6 • • • 3008642 Nozzle Holder
7 • • • 3008878 Kit Seals
8 • • • 3008643 Collar
9 • • • 3008794 High Voltage Lead
10 • • 3005708 Fan
10 • 3008645 Fan
11 • • 3008647 Air Damper Assembly
11 • 3008839 Air Damper Assembly
12 • • • 3008646 P.E. Cell
13 • • • 3002657 4 Pole Socket
14 • • • 3007479 Capacitor 4uf
15 • • • 3007582 Needle Valve
16 • • • 3008651 Regulator
17 • • • 3000439 Pump Seal
18 • • • 3008654 Pump
19 • • • 3008653 Filter - O - Ring
20 • • • 3007162 O - Ring
21 • • • 3009068 Connector
22 • • • 3007621 Flexible Oil Line
23 • • • 3008644 Tube
24 • • • 3008876 Pressure Gauge
25 • • • 3000443 Joint
26 • • • 3008650 Motor
27 • • • 3008648 Coil
28 • • • 3008879 Cover
29 • • • 3008851 Lead Coil
30 • • • 3008652 Control Box 535RSE/LD
31 • • • 3008649 Protection
32 • • • 3007418 4 Pin Plug
3513105
3513205
3513605
RDB1 Firebird 70K C.O.D. 3513105 TYPE 501 T1K
RDB1 Firebird 90K C.O.D. 3513205 TYPE 501 T1K
RDB2 Firebird 120K C.O.D. 3513605 TYPE 501 T3K

43
10-C Combi Pluming Parts Description
10
SPARE PARTS-BOILER
ITEM COMPONENT PART No. Qty
No. per boiler
1 Auto air vent FC 03010 1
2 Stat Pocket FC 03020 2
Filler Spring FC 03020a 1
Locking Spring FC 03020b 1
3 SIKA Flow Switch FC 03030 1
4 Safety Valve FC 03040 1
5 Manual air vent FC 03050 1
6 10 Ltr. Pressure Vessel 50/70 FC 0306070 1
12 Ltr. Pressure Vessel 70/90 FC 0306090 1
14 Ltr. Pressure Vessel 90/120 FC 03060120 1
6a Cf 3/4” x F12” Hose FC 03060 1
7 15mm double check mains isolating valve FC 03070 1
8 Thermostatic Mixing valve FC 03080 1
9 25 Plate heat exchanger FC 0309090 1
31 Plate heat exchanger FC 03090120 1
10 Filling loop 15mm isolating valve FC 03100 1
10a Filling loop hose
10b Filling loop 15mm check valve
11 Pump Valve FC 03101 4
12 Circulating Pump FC 03102 2
13 1/2”drain cock FC 03103 2
14 22mm Ball valve FC 03104 2
15 3/4 M/Fm Check Valve FC 03105 2

45
10-E Combi Parts Description
10
SPARE PARTS-BOILER
ITEM COMPONENT PART No. Qty
No. per boiler
18 Combi Boiler 50/70 - 70/90 FC 0310690 1
Combi Boiler 90/120 FC 0310612 1
19 Combi Tank 50/70 - 70/90 FC 0310790 1
Combi Tank 90/120 FC 0310712 1
20 Combustion chamber door 50/70 - 70/90 FC 0310890 1
Combustion chamber door 90/120 FC 0310812 1
20a Door Gasket 50/70 - 70/90 FC 03109 1
Door Gasket 90/120 FC 0310912 1
21 Viewing glass bracket FC 03110 1
21a Viewing glass FC 03111 1
21b Viewing glass gasket P70-L-45 1
22 Flue gas analysis point blank FC 03113 1
22a Flue gas analysis point gasket FC 03114 1
23 Flue adapter FC 03115 1
23a Flue adapter gasket FC 03116 1
23b M8 x 140mm Bolt FC 03117 1
24 50/70 - 70/90 Baffle P90-L-09 3-4
24b 90/120 Baffle P120-L-09 8
25L Left side panel FC 03118L 1
25R Right side panel FC 03119R 1
26 Front panel 50/70 - 70/90 FC 03120 1
Front panel 90/120 FC 0312012 1
27 Top panel 50/70 - 70/90 FC 03121 1
Top panel 90/120 FC 0312112 1
27a Top panel blanking plate FC 03122 1
27b Top panel flue finishing plate FC 03123 1
28 Drip tray FC 03124 1
29 Foil Lagging FC 03125 1
30 RDB Burner See page 41 1
30a Burner flange 1
30b Burner flange gasket 1
31 Flexible air hose FC 03126 1
32 Control panel back FC 03129 1
32a Control panel front 50/70 - 70/90 FC 03130 1
Control panel front 90/120 FC 0313012 1
32b Control panel top FC 03131 1

Date:
Commissioning Engineer:-
Name: Tel. No:
Address:
Boiler:-
Type Output:
Fuel Used: Kerosene (28 sec) or Gas oil (35 sec)
Burner:-
Nozzle size: Nozzle Type:
Pump Pressure: Air Setting:
Flue Gas % CO
2 : Net Flue gas temp:
Smoke No:
Sealed system design pressure (cold):
Sealed system final operating pressure (P
f
) :
Commissioning Engineer Signature:
Notes & Comments
Commissioning Record
This record should be carefully completed, remain in this manual and be left with
householder. A copy should be kept on file by engineer
2
48

Service Report
NB All Information recorded hereunder should also be included in Engineers own filed service
reports. It is recommended that the boiler be serviced, at least once a year, and the
details recorded below. Combi Boilers may need more frequent service. Engineer should
advise householder.
Date
% CO
2
Net Flue
gas temp
Smoke
No.
Nozzle
Service Engineer/Tel. No.
Signature & Comments
Signature:....................................................
Signature:....................................................
Signature:....................................................
Signature:....................................................
Signature:....................................................
Signature:....................................................
Signature:....................................................
Signature:....................................................
Type .........................................
Size ..........................................
Angle .......................................
Pressure ................................
Type .........................................
Size ..........................................
Angle .......................................
Pressure ................................
Type .........................................
Size ..........................................
Angle .......................................
Pressure ................................
Type .........................................
Size ..........................................
Angle .......................................
Pressure ................................
Type .........................................
Size ..........................................
Angle .......................................
Pressure ................................
Type .........................................
Size ..........................................
Angle .......................................
Pressure ................................
Type .........................................
Size ..........................................
Angle .......................................
Pressure ................................
Type .........................................
Size ..........................................
Angle .......................................
Pressure ................................
49

Service Report
NB All Information recorded hereunder should also be included in Engineers own filed service
reports. It is recommended that the boiler be serviced, at least once a year, and the
details recorded below. Combi Boilers may need more frequent service. Engineer should
advise householder.
Date
% CO
2
Net Flue
gas temp
Smoke
No.
Nozzle
Service Engineer/Tel. No.
Signature & Comments
Signature:....................................................
Signature:....................................................
Signature:....................................................
Signature:....................................................
Signature:....................................................
Signature:....................................................
Signature:....................................................
Signature:....................................................
Type .........................................
Size ..........................................
Angle .......................................
Pressure ................................
Type .........................................
Size ..........................................
Angle .......................................
Pressure ................................
Type .........................................
Size ..........................................
Angle .......................................
Pressure ................................
Type .........................................
Size ..........................................
Angle .......................................
Pressure ................................
Type .........................................
Size ..........................................
Angle .......................................
Pressure ................................
Type .........................................
Size ..........................................
Angle .......................................
Pressure ................................
Type .........................................
Size ..........................................
Angle .......................................
Pressure ................................
Type .........................................
Size ..........................................
Angle .......................................
Pressure ................................
50

uarantee
G
1. Firebird hereby guarantees the following (The Guarantees)
a. The heat exchanger will be free from defective parts or workmanship
for a period of 5 years from the date of installation.
b. Burner, controls and flue kits (supplied by Firebird) will be free from
defective parts or workmanship for a period of 2 years from the date
of installation. With the exception of burner nozzles. Which should be
replaced at the recommended service intervals.
2. Guarantees are subject to the following conditions:
e. Firebird can accept no liability in respect of any defect
arising from incorrect installation, negligence, fair wear and
tear, misuse, alteration or repair by unqualified persons.
f. Firebird will not accept any liability in respect of any
defect occurring in the heat exchanger due to limescale
build-up and or low return water temperature.
g. The guarantees extend to reasonable labour costs
EXCEPT under clause 1a where any valid claim made after
3 years will not include labour costs.
a. All claims under the guarantees must be within the above
stated time limits.
b. The boiler must be commissioned by qualified persons and as
set out in the Installation Manual, using correct test equipment.
c. Maintenance should be carried out at the intervals stated
in the Installation Manual.
d. Installation of the boiler must be in accordance with
(a) Installation Manual, (b) all relevant standards and codes of practice.
h. Firebird’s prior authorisation must be obtained before
examination or repair of the boiler takes place.
i. Firebird will examine all claims made under the guarantees
and for any claims that are deemed invalid, the costs
incurred will be borne by the owner.
3. Any defective part removed under any or all of the
guarantees MUST be returned to Firebird.
STATUTORY RIGHTS OF THE OWNER ARE NOT AFFECTED BY THIS GUARANTEE
Firebird Boilers Guarantee Registration
IMPORTANT
Please ensure that the appliance is commissioned and the installer or commissioning engineer fills in the
commissioning check details below, which should then be promptly returned to nearest Firebird address.
FIREBIRD UK
UNIT 6, WESTOVER INDUSTRIAL ESTATE,
IVYBRIDGE, DEVON, ENGLAND. PL21 9ES
TEL: 01 752 691177
FAX: 01 752 691131
TEAR OFF HERE
HOUSEHOLDER (In block capitals) INSTALLER (In block capitals)
&
RETURN TO THE APPROPRIATE ADDRESS
FIREBIRD BOILERS
BALLYMAKEERA,
CO. CORK, IRELAND.
TEL: 026 45253
FAX: 026 45309
FIREBIRD PRODUCTS
SHEAN, FORKHILL,
NEWRY, N. IRELAND. BT35 9SY
TEL: 028 30888330
FAX: 028 30889096
✂✂✂
NAME ...........................................................................................................................
ADDRESS .....................................................................................................................
............................................................................................................................................
............................................................................................................................................
POSTCODE .................................. TEL ........................................................................
✂
BOILER MODEL ....................................................... OUTPUT ............................. SERIAL NUMBER ....................................................................
NAME ...........................................................................................................................
ADDRESS .....................................................................................................................
............................................................................................................................................
............................................................................................................................................
POSTCODE .................................. TEL .......................................................................
Commissioning Check Details
Pump Pressure (psi) Smoke Reading Flue Draft in W.G.
F.G.T. ºC Burner Model Oil Type CO
DATE ............................... NAME ..................................................................
COMMISSIONING COMPANY ....................................................................................
SIGNATURE .............................................................................................................
ADDRESS .......................................................................................................................
............................................................................................................................................
............................................................................................................................................
POSTCODE .................................... TEL .........................................................................
57
2%

For further information on Firebird Products
please contact
FIREBIRD UK
Unit 6, Westover Industrial Estate, Ivybridge, Devon PL 21 9 ES
Tel: [+44] 01 752 691177 Fax: [+44] 01 752 691131
FIREBIRD BOILERS
Ballymakeera, Co. Cork.
Tel: [+353] 026 45253 Fax: [+353] 026 45309
FIREBIRD PRODUCTS
Shean, Forkhill, Newry. BT35 9SY.
Tel: [+44] 028 30888330 Fax: [+44] 028 30889096
.
Int. Access Codes: Eg. N.I. +44 28
30888330
© RJS 1 8 2004
© Copyright applies to all FIREBIRD products. Our policy is one of continual development and we therefore reserve
the right to change without prior notice the specification of our products at any time and be without obligation to
make similar changes in products previously produced.
Affix
................................................................................................................................................................................
................................................................................................................................................................................
................................................................................................................................................................................
................................................................................................................................................................................
................................................................................................................................................................................
Stamp
Here