These instructions include the Benchmark Commissioning Checklist
and should be left with the user for safw keeping.
Natural Gas
Main Eco Elite 25 Combi ErP
o
47 467 12
G.C.N
Main Eco Elite 30 Combi ErP
G.C.No47 467 13
Building Regulations and the Benchmark Commissioning
Checklist
Building Regulations (England & Wales) require notification of
the installation of a heating appliance to the relevant Local
Authority Building Control Department. From 1 April 2005 this
can be achieved via a Competent Persons Self Certification
Scheme as an option to notifying the Local Authority directly.
Similar arrangements will follow for Scotland and will apply in
Northern Ireland from 1 January 2006.
The Health & Safety Executive operates the ‘Gas Safe Register’,
a self-certification scheme for gas heating appliances.
These arrangements represent a change from the situation
whereby compliance with Building Regulations was accepted as
being demonstrated by completion of the Benchmark Logbook
(which was then left on site with the customer).
With the introduction of Self Certification Schemes, the
Benchmark Logbook is being withdrawn. However, a similar
document in the form of a commissioning checklist and service
interval record is incorporated at the back of these instructions.
The Benchmark Scheme
Benchmark places responsibilities on both manufacturers and installers. The
purpose is to ensure that customers are provided with the correct equipment for
their needs, that it is installed, commissioned and serviced in accordance with the
manufacturer’s instructions by competent persons and that it meets the
requirements of the appropriate Building Regulations. The Benchmark Checklist
can be used to demonstrate compliance with Building Regulations and should be
provided to the customer for future reference.
Installers are required to carry out installation, commissioning and servicing work
in accordance with the Benchmark Code of Practice which is available from the
Heating and Hotwater Industry Council who manage and promote the Scheme.
Visit www.centralheating.co.uk for more information.
Applications for the copyright owner’s permission to reproduce or make other
use of any part of this publication should be made, giving details of the proposed
use, to the following address:
The Company Secretary, Baxi Heating UK Ltd,
Brooks House, Coventry Road, Warwick. CV34 4LL
Full acknowledgement of author and source must be given.
This company is a member of the Benchmark initiative and fully
supports the aims of the programme. Its aim is to improve the
standards of installation and commissioning of central heating
systems in the UK and to encourage the regular servicing of all
central heating systems to ensure safety and efficiency.
Building Regulations require that installations should comply
with manufacturer's instructions. It is therefore important that
the commissioning checklist is completed by the installer. The
relevant section of Building Regulations only relates to
dwellings. Therefore the checklist only applies if the appliance is
being installed in a dwelling or some related structure.
The flowchart opposite gives guidance for installers on the
process necessary to ensure compliance with Building
Regulations.
WARNING: Any person who does any unauthorised act in relation to a
copyright work may be liable to criminal prosecution and civil claims for damages.
IMPORTANT - Installation, Commissioning, Service & Repair
This appliance must be installed in accordance with the manufacturer’s instructions and
the regulations in force. Read the instructions fully before installing or using the
appliance.
In GB, this must be carried out by a competent person as stated in the Gas Safety
(Installation & Use) Regulations.
Definition of competence: A person who works for a Gas Safe registered company
and holding current certificates in the relevant ACS modules, is deemed competent.
In IE, this must be carried out by a competent person as stated in I.S. 813 “Domestic
Gas Installations”.
The addition of anything that may interfere with the normal operation of the appliance
without express written permission from the manufacturer or his agent could invalidate
the appliance warranty. In GB this could also infringe the Gas Safety (Installation and
Use) Regulations.
Legislation
This company declare that no substances harmful to health
are contained in the appliance or used during appliance
manufacture.
The appliance is suitable only for installation in GB and IE and
should be installed in accordance with the rules in force, and
only used in a suitably ventilated location.
In GB, the installation must be carried out by a Gas Safe
Registered Installer. It must be carried out in accordance with
the relevant requirements of the:
• Gas Safety (Installation & Use) Regulations.
• The appropriate Building Regulations either The Building
Regulations, The Building Regulations (Scotland), Building
Regulations (Northern Ireland).
• The Water Fittings Regulations or Water Byelaws in
Scotland.
• The Current I.E.E. Wiring Regulations.
Warning - Check the information on the data plate is compatible with local supply
conditions.
All Gas Safe registered engineers carry an ID card with their licence number and a
photograph. You can check your engineer is registered by telephoning
0800 408 5500 or online at www.gassaferegister.co.uk
The boiler meets the requirements of Statutory Instrument “ The Boiler (Efficiency)
o
Regulations 1993 N
3083” and is deemed to meet the requirements of Directive
92/42/EEC on the energy efficiency requirements for new hot water boilers fired with
liquid or gaseous fuels:-
Type test for purpose of Regulation 5 certified by:
Notified Body 0086.
Product/Production certified by:
Notified Body 0086.
For GB/IE only.
Homologations
CE Marking
EC - Declaration of Conformity
Baxi Heating UK Limited being the manufacturer / distributor within the European
Economic Area of the following
Main Eco Eliite 25 Combi ErP
Main Eco Elite 30 Combi ErP
declare that the above is in conformity with the provisions of the Council Directive
and has been subject to the following conformity procedures laid down in
Annex 2 - Article 3 of 2009/142/EC
under the supervision of the British Standards Institution, a Notified Body authorized
by the United Kingdom Competent Authority, and carrying the Notified Body
Number 0086.
Where no specific instructions are given, reference should be
made to the relevant British Standard Code of Practice.
In IE, the installation must be carried out by a competent
Person and installed in accordance with the current edition of
I.S. 813 ‘Domestic Gas Installations’, the current Building
Regulations and reference should be made to the current ETCI
rules for electrical installation.
All systems must be thoroughly flushed and treated with
inhibitor (see section 6.2).
Codes of Practice - refer to the most recent version
In GB the following Codes of Practice apply:
StandardScope
BS 6891Gas Installation.
BS 5546Installation of hot water supplies for domestic
BS EN 12828Heating systems in buildings.
BS EN 14336Installation & commissioning of water based
BS 6798Installation of gas fired hot water boilers.
BS 5440 Part 1Flues.
BS 5440 Part 2Ventilation.
BS 7074Expansion vessels and ancillary equipment for
BS 7593Treatment of water in domestic hot water
In IE the following Codes of Practice apply:
StandardScope
I.S. 813Domestic Gas Installations.
The following standards give valuable additional information;
BS 5546Installation of hot water supplies for domestic
BS EN 12828Heating systems in buildings.
BS EN 14336Installation & commissioning of water based
BS 7074Expansion vessels and ancillary equipment for
BS 7593Treatment of water in domestic hot water
purposes.
heating systems.
sealed water systems.
central heating systems.
purposes.
heating systems.
sealed water systems.
central heating systems.
Type test for purpose of Regulation 5 certified by:
Notified Body 0086.
Product/Production certified by:
Notified Body 0086.
The following advice should be adhered to, from when first handling the boiler to the final stages of installation, and also during maintenance.
Most injuries as a result of inappropriate handling and lifting are to the back, but all other parts of the body are vulnerable, particularly shoulders, arms and hands.
Health & Safety is the responsibility of EVERYONE.
There is no ‘safe’ limit for one man - each person has different capabilities. The boiler should be handled and lifted by TWO PEOPLE.
Do not handle or lift unless you feel physically able.
Wear appropriate Personal Protection Equipment e.g. protective gloves, safety footwear etc.
Preparation
Co-ordinate movements - know where, and when, you are both going.
Minimise the number of times needed to move the boiler - plan ahead.
Always ensure when handling or lifting the route is clear and unobstructed. If possible avoid steps, wet or slippery surfaces, unlit areas etc. and take special care
on ladders/into lofts.
Technique
When handling or lifting always use safe techniques - keep your back straight, bend your knees. Don’t twist - move your feet, avoid bending forwards and
sideways and keep the load as close to your body as possible.
Where possible transport the boiler using a sack truck or other suitable trolley.
Always grip the boiler firmly, and before lifting feel where the weight is concentrated to establish the centre of gravity, repositioning yourself as necessary. See the
‘Installation’ section of these instructions for recommended lift points.
Remember
The circumstances of each installation are different. Always asses the risks associated with handling and lifting according to the individual conditions.
If at any time when installing the boiler you feel that you may have injured yourself STOP !!
DO NOT ‘work through’ the pain - you may cause further injury.
IF IN ANY DOUBT DO NOT HANDLE OR LIFT THE BOILER - OBTAIN ADVICE OR ASSISTANCE BEFORE PROCEEDING !!
1. The Main Eco Elite Combi is a fully automatic gas fired wall
mounted condensing combination boiler. It is room sealed and
fan assisted, and will serve central heating and mains fed
domestic hot water.
2. The boiler is set to give a maximum output of :-
25 model -25.94 kW DHW
26.95 kW CH Pnc (Condensing)
30 model -28.63 kW DHW
30.2 kW CH Pnc (Condensing)
3. It is designed for use on Natural Gas (G20).
4. The boiler is suitable for use only on fully pumped sealed
heating systems. Priority is given to domestic hot water.
5. The boiler data badge gives details of the model, serial
number and Gas Council numbe. It is visible when the case front
panel is removed (Fig. 1).
Control Box
Fig. 1
Facia Door
Data Badge
6. The boiler model name and serial number are also shown on
the information label on the back of the facia door. This is for
user reference.
7. The boiler is intended to be installed in residential / domestic
environments on a governed meter supply only.
8. The boiler must be installed with one of the purpose
designed flues such as the standard horizontal flue kit, part no.
5118489 .
9. All systems must be thoroughly flushed and treated with
1Primary Heat Exchanger
2Burner
3Ignition Electrodes
4Flame Sensing Electrode
5Gas Valve
6Pump
7Automatic Air Vent
8Plate Heat Exchanger/Automatic By-Pass
9Flow Sensor with Filter & Regulator
10 Pressure Relief Valve
11 Boiler Drain Point
12 Heating Return
13 Cold Water Inlet On/Off Valve and Filter
14 Gas Inlet
Domestic Hot Water Circuit
24
22
21
1
27
2
4
3
20
23
27
5 6
8
9
10
1213141516
15 Domestic Hot Water Outlet
16 Heating Flow
17 Pressure Gauge
18 Water Pressure Sensor
20 Fan
21 Diverter Valve Assembly
22 Diverter Valve Motor
23 Domestic Hot Water Flow Temperature Sensor
24 Safety Thermostat
25 Central Heating Temperature Sensor
26 Expansion Vessel
27 Heat Exchanger Air Vent
1
7
11
17
3.1Central Heating Mode (Fig. 2)
1. With a demand for heating, the pump circulates water
through the primary circuit.
2. Once main burner ignites the fan speed controls the gas
rate to maintain the heating temperature measured by the
temperature sensor.
3. When the flow temperature exceeds the setting
temperature, a 3 minute delay occurs before the burner
relights automatically (anti-cycling). The pump continues to
run during this period.
4. When the demand is satisfied the burner is extinguished
and the pump continues to run for a period of 3 minutes
(Pump Overrun).
3.2Domestic Hot Water Mode (Fig. 3)
1. Priority is given to the domestic hot water supply. A
demand at a tap or shower will override any central heating
requirement.
2. The flow of water will operate the Hall Effect Sensor
which requests the 3 way valve to change position. This will
allow the pump to circulate the primary water through the
DHW plate heat exchanger.
3. The burner will light automatically and the temperature of
the domestic hot water is controlled by the temperature
sensor.
4. When the domestic hot water demand ceases the burner
will extinguish and the diverter valve will remain in the
domestic hot water mode, unless there is a demand for
central heating.
IMPORTANT: When the selector switch is in the ‘0’
(Off) position the electrical supply to the boiler is isolated.
The boiler will not operate and the integral timer will
require resetting once the selector switch is set to either
Position ( ) or Position ( ).
1. The frost protection mode is integral to the appliance and
functions only with the selector switch (see Section 2.1) in
the domestic hot water and central heating position. If the
system temperature falls below 5° C then the boiler will fire
on its minimum setting until a flow temperature of 30° C is
reached. Further protection can be incorporated by using a
system frost thermostat.
8
3.4Pump Protection
1. With the selector switch (see Section 2.1) in either the
9
23
10
11
17
1213141516
central heating or central heating and domestic hot water
position, the pump will automatically operate for 1 minute in
every 24 hours to prevent sticking.
9
4.0Technical Data
4.1Main Eco Elite 25 & 30 Combi ErP
Appliance TypeC
C
13
33
Appliance CategoryCAT I
Heat Input CH Qn Hs (Gross)
MaxMin
25 modelkW28.928.68
30 modelkW32.549.77
Heat Output CH Pn (Non-Condensing)
MaxMin
25 modelkW25.947.61
30 modelkW28.638.56
Heat Output CH Pnc (Condensing)
MaxMin
25 modelkW26.958.37
30 modelkW30.29.42
Heat Input DHW Qnw Hs (Gross)
Max
25 modelkW28.92
30 modelkW33.30
Heat Output DHWMax
25 modelkW24.88
30 modelkW30.00
Max Gas Rate(Natural Gas - G20)
(After 10 mins)
25 modelm3/h2.76
30 modelm3/h3.17
Product Characteristic Database
(SEDBUK)
SAP 2009 Annual Efficiency
25 - 89.0 %
30 - 88.7 %
This value is used in the UK Government’s Standard
Assessment Procedure (SAP) for energy rating of
dwellings. The test data from which it has been
calculated has been certified by 0086.
NOTE: All data in this section are nominal values
and subject to normal production tolerances.
300mm Min (80/125)
Below Casing200 mm Min
Front450 mm Min (For Servicing)
Front5 mm Min (In Operation)
L.H. Side5 mm Min
R.H. Side5 mm Min (In Operation)
Weights25 & 30
Packaged Boiler Carton51.0 kg
Installation Lift Weight45.0 kg
NOxClass 5
Central Heating Primary Circuit
Pressures
bar
Safety Discharge3
Max Operating2.5
Min Operating0.5
Recommended Operating Range1-2
DHW Circuitbar
Pressures
Max Operating8
Min Operating0.15
Flow Rates(25)(30)
l/min l/min
DHW Flow Rate
@ 30o C Rise11.914.3
DHW Flow Rate
@ 35o C Rise10.212.3
Min Working
DHW Flow Rate22
IMPORTANT: Where Low Flow Taps or Fittings are
intended to be used in the DHW system connected it is
strongly recommended that the DHW flow rate DOES
NOT fall below 2.5l/min. This will ensure reliable
operation of the DHW function.
Pump
Available HeadSee graph below
Expansion Vessel- (For Central Heating
only. Integral with appliance)
bar
Min Pre-charge Pressure0.5
Max Capacity of litre
CH System125
For greater system capacities an
additional expansion vessel MUST be fitted.
Primary Water Content
of Boiler (unpressurised)3.1
Temperatures
C.H. Flow Temp (adjustable)
25°C to 80°C max (± 5°C)
D.H.W. Flow Temp (adjustable)
35°C to 60°C max (± 5°C)
dependent upon flow rate
Pump - Available Head
5.5
5
4.5
4
3.5
3
2.5
2
Metre (wg)
1.5
1
0.5
0
200400600800100012001400
0
Flow Rate (l/h)
4.0Technical Data
See
4.2Technical Parameters
Technical parameters for boiler combination heaters
Main Eco Elite Combi ErP
Condensing boiler
Low-temperature boiler
(1)
B1 boiler
Cogeneration space heater
Combination heater
Rated heat output
Useful heat output at rated heat output
and high temperature regime
(2)
Useful heat output at 30% of rated heat
output and low temperature regime
(1)
Seasonal space heating energy efficiency
Useful efficiency at rated heat output and
high temperature regime
(2)
Useful efficiency at 30% of rated heat
output and low temperature regime
(1)
Auxiliary electricity consumption
Full load
Part load
Standby mode
Other items
Standby heat loss
Ignition burner power consumption
Annual energy consumption
Sound power level, indoors
Emissions of nitrogen oxidesNO
Prated
P
4
P
1
Š
s
Š
4
Š
1
kW
kW
kW
%
%
%
elmax
elmin
P
SB
kW
kW
kW
P
stby
P
ign
Q
HE
kW
kW
kWh
GJ
L
WA
X
dB
mg/kWh
25
YesYes
NoNo
NoNo
NoNo
YesYes
2629
25.928.6
8.49.5
9292
89.788.0
97.097.0
0.0490.098
0.0160.016
0.0030.003
0.0610.061
--
2255724896
8190
5050
2530
Domestic hot water parameters
Declared load profile
Daily electricity consumption
Annual electricity consumption
Water heating energy efficiency
Daily fuel consumption
Annual fuel consumption
(1) Low temperature means for condensing boilers 30°C, for low temperature boilers 37°C and for other
heaters 50°C return temperature (at heater inlet).
(2) High temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature
1. The Main Eco Elite Combi Condensing Combination Boiler is a
‘Water Byelaws Scheme - Approved Product’.
To comply with the Water Byelaws your attention is drawn to
the following installation requirements and notes (IRN).
a) IRN 001 -See text of entry for installation
requirements and notes.
b) IRN 302 -Byelaw 14.
2. Reference to the WRc publications, ‘Water fittings and
materials directory’ and ‘Water supply byelaws guide’ give full
details of byelaws and the IRNs.
6.2Central Heating Circuit
1. The appliance is suitable for fully pumped SEALED
SYSTEMS ONLY.
Treatment of Water Circulating Systems
• All recirculatory water systems will be subject to corrosion
unless an appropriate water treatment is applied. This means
that the efficiency of the system will deteriorate as corrosion
sludge accumulates within the system, risking damage to
pump and valves, boiler noise and circulation problems.
• When fitting new systems flux will be evident within the
system, which can lead to damage of system components.
• All systems must be thoroughly drained and flushed out
using, for example, Sentinel X300 or X400 or Fernox F3.
They should be used following the flushing agent
manufacturer’s instructions.
• System additives - corrosion inhibitors and flushing
agents/descalers should comply to BS7593 requirements, e.g.
Sentinel X100 and Fernox MB-1 which should be used
following the inhibitor manufacturer’s instructions.
• Full instructions are supplied with the products, for further
information contact Sentinel (0800 389 4670) or Fernox
(0870 870 0362)
Failure to flush and add inhibitor to the system will
invalidate the appliance warranty.
• It is important to check the inhibitor concentration after
installation, system modification and at every service in
accordance with the manufacturer’s instructions. (Test kits are
available from inhibitor stockists.)
• For information or advice regarding any of the above
contact Technical Enquiries.
1. The boiler utilises the primary side of the DHW plate heat
exchanger as an automatic integral bypass.
6.4System Control
1. Further external controls (e.g. room thermostat) should be
fitted to optimise the economical operation of the boiler.
13
6.0System Details
6.5System Filling and Pressurising (Fig. 4)
Fig. 4
Stop
Valve
DHW
Mains
Inlet
Double
Check
Valve
Temporary
Hose
Stop
Valve
CH
Return
1. A filling point connection on the central heating return
pipework must be provided to facilitate initial filling and
pressurising and also any subsequent water loss
replacement/refilling.
2. A filling loop is supplied with the boiler in the installation kit.
Follow the instructions provided with it to connect to the taps
shown in Fig.5.
3. The filling method adopted must be in accordance with all
relevant water supply regulations and use approved
equipment.
4. Your attention is drawn to:
for GB: Guidance G24.2 and recommendation R24.2 of the
Water Regulations Guide.
for IE: the current edition of I.S. 813 “Domestic Gas
Installations”.
5. The sealed primary circuits may be filled or replenished by
means of a temporary connection between the circuit and a
supply pipe, provided a ‘Listed’ double check valve or some
other no less effective backflow prevention device is
permanently connected at the inlet to the circuit and the
temporary connection is removed after use.
Filling Loop
Connections
Fig. 5
6.6Expansion Vessel (Central Heating only)
1. The appliance expansion vessel is pre-charged to 0.5 bar.
Therefore, the minimum cold fill pressure is 0.5 bar. The
vessel is suitable for correct operation for system capacities up
to 125 litres. For greater system capacities an additionalexpansion vessel MUST be fitted.
For GB refer to BS 7074 Pt 1. For IE, the current edition of I.S.
813 “Domestic Gas Installations”.
6.7Safety Pressure Relief Valve (Fig. 6)
1. The pressure relief valve is set at 3 bar, therefore all
pipework, fittings, etc. should be suitable for pressures in
excess of 3 bar and temperature in excess of 100°C.
2. The pressure relief discharge pipe should be not less than
15mm dia, run continuously downward, and discharge outside
the building, preferably over a drain. It should be routed in
such a manner that no hazard occurs to occupants or causes
damage to wiring or electrical components. The end of the
pipe should terminate facing down and towards the wall.
3. The discharge must not be above a window, entrance or
other public access. Consideration must be given to the
possibility that boiling water/steam could discharge from the
pipe.
Other Tap
Outlets
Expansion
Vessel*
Boiler
6.0System Details
6.8Domestic Hot Water Circuit (Fig. 7)
1. All DHW circuits, connections, fittings, etc. should be fully in
accordance with relevant standards and water supply
regulations.
2. Your attention is drawn to:
for GB: Guidance G17 to G24 and recommendation R17 to
R24 of the Water Regulations Guide.
for IE: the current edition of I.S. 813 “Domestic Gas
Installations”.
Fig. 7
Check
Valve*
Pressure Reducer
Valve*
Stop Tap
To Hot
Taps
* See 6.8 for instances when
these items may be required
3. The Water Regulations recommendations for England and
Wales prohibits backflow from appliances into the wholesome
water supply due to thermal expansion. However this type of
instantaneous combination boiler, with less than 15 litres of
stored capacity, does not require any backflow prevention
device as any thermal expansion is accommodated within the
appliance.
It is possible in certain circumstances that other cold water
demands (e.g. washing machines, flushing of W.C.s) may affect
the DHW function of the boiler. In these instances the fitting of
a backflow prevention device and expansion vessel is
recommended.
4. Also if there is an existing check valve, loose jumpered stop
cock, water meter or water treatment device already fitted to
the wholesome water supply connected to the boiler domestic
hot water (DHW) inlet supply then a suitable expansion device
may be required.
5. If the hot water expansion is not provided for, then high
pressures can develop which may result in damage to fittings
and devices on the system.
6. The boiler’s maximum working mains pressure is 8 bar,
therefore all pipework, connections, fittings, etc. should be
suitable for pressures in excess of 8 bar. A pressure reducing
valve must be fitted for pressures in excess of 8 bar. The
manufacturer of any outlet fittings, such as a shower valve, may
require a lower maximum pressure. The pressure reduction
must take account of all fittings connected to the DHW system.
1. If a shower control is supplied from the appliance it should be
of the thermostatic or pressure balanced type. Thermostatic
type shower valves provide the best comfort and guard against
water at too high a temperature. Existing controls may not be
suitable - refer to the shower valve manufacturer.
6.10Hard Water Areas
1. Only water that has NOT been artificially softened must used
when filling or re-pressurising the primary system. If the mains
cold water to the property is fitted with an artificial
softening/treatment device the source use to fill or
re-pressurise the system must be upstream of such a device.
15
7.0Site Requirements
Fig. 8
5mm Min
450mm
5mm Min
175mm Min
(300mm Min if
using 80/125mm
flueing system)
780mm
200mm Min
7.1Location
1. The boiler may be fitted to any suitable wall with the flue
passing through an outside wall or roof and discharging to
atmosphere in a position permitting satisfactory removal of
combustion products and providing an adequate air supply.
The boiler should be fitted within the building unless
otherwise protected by a suitable enclosure i.e. garage or
outhouse. (The boiler may be fitted inside a cupboard-see
Section 7.3).
2. If the boiler is sited in an unheated enclosure then it is
recommended to leave the ON/OFF Selector Switch in the
domestic hot water and central heating position to give frost
protection.
3. If the boiler is fitted in a room containing a bath or shower
reference must be made to the relevant requirements.
In GB this is the current I.E.E. Wiring Regulations and Building
Regulations.
In IE reference should be made to the current edition of I.S.
813 “Domestic Gas Installations” and the current ETCI rules.
4. If the boiler is to be fitted into a building of timber frame
construction then reference must be made to the current
edition of Institute of Gas Engineers Publication IGE/UP/7
(Gas Installations in Timber Framed Housing).
450mm Min
For Servicing
Purposes
At Least 1.5°
7.2Clearances (Figs. 8 & 9)
1. A flat vertical area is required for the installation of the
boiler.
2. These dimensions include the necessary clearances around
the boiler for case removal, spanner access and air
movement. Additional clearances may be required for the
passage of pipes around local obstructions such as joists
running parallel to the front face of the boiler.
1. Where the appliance is installed in a cupboard or
compartment, no air vents are required.
2. BS 5440: Part 2 refers to room sealed appliances
installed in compartments. The appliance will run sufficiently
cool without ventilation.
7.4Gas Supply
1. The gas installation should be in accordance with the
relevant standards. In GB this is BS 6891. In IE this is the
current edition of I.S. 813 “Domestic Gas Installations”.
2. The connection to the appliance is a 22mm copper tail
located at the rear of the gas service cock (Fig. 10).
3. Ensure that the pipework from the meter to the
appliance is of adequate size. Do not use pipes of a
smaller diameter than the boiler gas connection (22mm).
7.5Electrical Supply
1. External wiring must be correctly earthed, polarised and
in accordance with relevant regulations/rules. In GB this is
the current I.E.E. Wiring Regulations. In IE reference should
be made to the current edition of ETCI rules.
Fig. 11
Zone 1
Zone 0
Window
Recess
Zone 2
0.6 m
In GB Only
Window Recess
Zone 2
Zone 2
0.6 m
2.25 m
Ceiling
Outside Zones
2. The mains supply is 230V ~ 50Hzfused at 3A.
NOTE: The method of connection to the electricity
supply must facilitate complete electrical isolation of the
appliance.
Connection may be via a fused double-pole isolator
with a contact separation of at least 3mm in all poles
and servicing the boiler and system controls only.
7.6Bath & Shower Rooms
1. If the boiler is fitted in a room containing a bath or
shower and NOT FITTED with any integral timer or
thermostat, it can be fitted in zone 2, (Figs. 11 & 12 shows
zone dimensions for a bathtub. For other examples refer to
the Current I.E.E. Wiring Regulations) reference must be
made to the relevant requirements.
In GB this is the current I.E.E. Wiring Regulations and
Building Regulations.
In IE reference should be made to the current edition of I.S.
813 “Domestic Gas Installations” and the current ETCI
rules.
Examples are shown of the following methods of termination:i) to an internal soil & vent pipe
ii) via an internal discharge branch (e.g. sink waste) downstream of the trap
iii) to a drain or gully
iv) to a purpose made soakaway
v) pumped into an internal discharge branch (e.g. sink waste) downstream of the trap
vi) pumped into an external soil & vent pipe
vii) to a drain or gully with extended external run & trace heating
It is strongly recommended to discharge internally into the household
drainage system. If connecting to a rain water drain, that drain MUST
discharge into a foul drain.
Insulation
Pipe must terminate above
water level but below
surrounding surface. Cut
end at 45°
2.5° Minimum fall
Sink
21.5mm
i) Termination to an internal soil and
vent pipe
50mm per metre of pipe run
450mm min*
Boiler
ii) External termination via internal discharge branch
50mm per metre of pipe run
2.5° Minimum fall
32mm
*450mm is applicable to properties
up to 3 storeys.
For multi-storey building installations
consult BS 6798.
e.g sink waste - downstream*
7.0Site Requirements
7.7Condensate Drain
FAILURE TO INSTALL THE CONDENSATE DISCHARGE
PIPEWORK CORRECTLY WILL AFFECT THE RELIABLE
OPERATION OF THE BOILER.
CAREFUL CONSIDERATION MUST BE GIVEN TO THE
POSSIBILITY OF THE PIPEWORK BEING SUBJECT TO
FREEZING CONDITIONS AND APPROPRIATE
MEASURES TAKEN TO PREVENT BLOCKAGE.
CORRECT INSTALLATION IN ACCORDANCE WITH
THIS SECTION WILL CONSIDERABLY MINIMISE THE
LIKELIHOOD OF BLOCKAGE AND SUBSEQUENT
BOILER LOCK-OUT.
A CONDENSATE DISCHARGE PUMP AND PIPE ‘TRACE
HEATING’ ARE AVAILABLE AS ACCESSORIES - see
paragraphs 7.7.12 to 7.715 for further details.
The condensate discharge pipe MUST NOT RISE at any
point along its length. There MUST be a fall of AT LEAST
2.5° (50mm per metre) along the entire run EXCEPT when
employing a suitable condensate pump in basement and
cellar or similar applications.
The boiler condensate trap incorporates a seal of 75mm,
therefore it is unnecessary to install an air break and trap in
the discharge pipework.
3
1. The condensate outlet will accept 21.5mm (
overflow pipe. It is strongly recommended that this dischargesinternally into the household drainage system.
Where this is not possible, discharge into an outside drain is
permissible providing every possible precaution is taken to
prevent freezing.
2. Ensure the discharge of condensate complies with any
national or local regulations in force. BS 6798 & Part H1 of the
Building Regulations give further detailed guidance.
Further specific requirements for soakaway
design are referred to in BS 6798.
50mm per metre of pipe run
2.5° Minimum fall
*It is NOT RECOMMENDED
to connect upstream of the
sink or other waste water
receptacle !
Pipe must terminate above
water level but below
surrounding surface. Cut
end at 45°
500mm min
Holes in the soak-away must
face away from the building
3. The discharge pipe should be run in a proprietary drain pipe
material e.g. PVC, PVC-U, ABS, PVC-C or PP.
4. Metal pipework is NOT suitable for use in condensate
discharge systems.
5. The pipe should be a minimum of 21.5mm diameter and
must be supported using suitably spaced clips of the correct
design to prevent sagging.
6. It is advisable that the full length of condensate pipe is run
internally and preferably be less than 3 metres.
7. Internal runs greater than 3 metres or runs in cold areas
should use 32mm waste pipe.
8. External runs MUST be a MINIMUM of 32mm and fully
insulated with material suitable for external use.
9. If the boiler is fitted in an unheated location the entire
condensate discharge pipe should be treated as an external run
and sized and insulated accordingly.
10. In all cases discharge pipe must be installed to aid disposal of
the condensate. To reduce the risk of condensate being
trapped, as few bends and fittings as possible should be used
and any burrs on cut pipe removed.
11. When discharging condensate into a soil stack or waste pipe
the effects of existing plumbing must be considered. If soil pipes
or waste pipes are subjected to internal pressure fluctuations
when WC's are flushed or sinks emptied then back-pressure
may force water out of the boiler trap and cause appliance
lockout.
v) pumped into an internal discharge branch
(e.g. sink waste) downstream of the trap
50mm per metre of pipe run
Sink
2.5° Minimum fall
Basement or similar
(heated)
Boiler
Condensate Pump
vi) pumped into an external soil & vent pipe
50mm per metre of pipe run
Pipe must terminate above
water level but below
surrounding surface. Cut
end at 45°
7.0Site Requirements
7.7Condensate Drain (cont.)
12. A boiler discharge pump is available, ‘MULTIFIT’
part no. 720648301. This pump will dispose of both
condensate & high temperature water from the relief valve.
It has a maximum head of 5 metres. Follow the instructions
supplied with the pump.
13. Condensate Drain Pipe ‘Trace Heating’ Elements are
available in various lengths. ‘MULTIFIT’ part nos.:-
1 metre 720644401
2 metre 720664101
3 metre 720664201
5 metre 720664401*
*Where the drain is between 3 & 5 metres a 5 metre kit can
be used and “doubled back” upon itself.
14. It is possible to fit the element externally on the
condensate drain or internally as detailed in the instructions
provided.
15. The fitting of a ‘Trace Heating’ Element is NOT a
substitute for correct installation of the condensate drain.
ALL requirements in this section must still be adhered to.
Unheated Location
(e.g. Garage)
Boiler
2.5° Minimum fall
Basement or similar
(heated)
Condensate Pump
vii) to a drain or gully with extended
external run & trace heating
The ‘Trace Heating’ element
must be installed in accordance
Boiler
with the instructions supplied.
External runs & those in
unheated locations still require
insulation.
50mm per metre of pipe run
2.5° Minimum fall
Pipe must terminate above
water level but below
surrounding surface. Cut
end at 45°
Terminal Position with Minimum Distance (Fig. 14)(mm)
A1Directly below an opening, air brick, opening
windows, etc.300
B1Above an opening, air brick, opening window etc.300
C1Horizontally to an opening, air brick, opening window etc.300
D2Below gutters, soil pipes or drain pipes.25 (75)
E2Below eaves.25 (200)
2
F
Below balconies or car port roof.25 (200)
G2From a vertical drain pipe or soil pipe.25 (150)
H2From an internal or external corner.25 (300)
IAbove ground, roof or balcony level.300
JFrom a surface or boundary line facing a terminal.600
K From a terminal facing a terminal (Horizontal flue).1200
From a terminal facing a terminal (Vertical flue).600
LFrom an opening in carport (e.g. door, window)
into the dwelling. 1200
M Vertically from a terminal on the same wall.1500
N Horizontally from a terminal on the same wall.300
R From adjacent wall to flue (vertical only).300
SFrom an adjacent opening window (vertical only).1000
T Adjacent to windows or openings on pitched and flat roofs600
U Below windows or openings on pitched roofs2000
1
In addition, the terminal should be no nearer than 150 mm to an opening in the
building fabric formed for the purpose of accommodating a built-in element such as
a window frame.
2
Only ONE 25mm clearance is allowed per installation. If one of the dimensions
D, E, F, G or H is 25mm then the remainder MUST be as shown in brackets, in
accordance with B.S.5440-1.
NOTE: The distance from a fanned draught appliance terminal
installed parallel to a boundary may not be less than 300mm in
accordance with the diagram below
*
7.0Site Requirements
7.8Flue (Figs. 13 & 14)
NOTE: Due to the nature of the boiler a plume of water
vapour will be discharged from the flue. This should be
taken into account when siting the flue terminal.
1. The following guidelines indicate the general requirements
for siting balanced flue terminals. For GB recommendations
are given in BS 5440 Pt 1. For IE recommendations are given
in the current edition of I.S. 813 “Domestic Gas
Installations”.
2. If the terminal discharges onto a pathway or passageway,
check that combustion products will not cause a nuisance
and that the terminal will not obstruct the passageway.
3. If a terminal is less than 2 metres above a balcony, above
ground or above a flat roof to which people have access,
then a suitable terminal guard must be provided.
IMPORTANT:
• Under car ports we recommend the use of the plume
displacement kit.
• The terminal position must ensure the safe and
nuisance - free dispersal of combustion products.
*4. Reduction to the boundary is possible down to 25mm
but flue deflector part no. 5111068 must be used.
Fig. 13
Plume
Displacement Kit
IMPORTANT: If fitting a Plume
Displacement Flue Kit, the air inlet
must be a minimum of 150mm from
any opening windows or doors.
Likely flue positions requiring
a flue terminal guard
Fig. 14
8.0Flue Options
8.1Horizontal Flue Systems
1. The standard flue is suitable only for horizontal
termination applications.
Y
2. All fittings should be fully engaged. The approximate
X
engagement is 40mm. Apply the lubricant supplied to the
seal on each fitting to aid assembly.
3. Maximum permissible equivalent flue lengths are:(60/100)(80/125)
Horizontal Concentric10 metres20 metres
Horizontal
Flues
Plume Displacement Kit 60 /100 Ø
1M Extensions, 45° & 93° elbows
are also available - see Section 9.0
NOTE: Horizontal flue pipes should always be installed with at least a 1.5° fall
from the terminal to allow condensate to run back to the boiler.
This bend is equivalent to
1 metre
4. Any additional “in line” bends in the flue system must be
taken into consideration.
Their equivalent lengths are:Concentric Pipes:
135° bend0.5 metres
93° bend1.0 metres
5. The elbow supplied with the standard horizontal
telescopic flue kit is not included in any equivalent length
calculations.
NOTE: Flue length is measured from point X to Y as
shown.
IMPORTANT
SUPPORT - All flue systems MUST be securely
supported a MINIMUM of once every metre. It is
recommended that every straight piece is supported
irrespective of length. Additional supports are available
as accessories.
VOIDS - Consideration must be given to flue systems
in voids and the provision of adequate access for
subsequent periodic visual inspection.
6. Read this section in conjunction with the Flue Installation
The standard horizontal telescopic flue kit allows for lengths
between 315mm and 500mm from elbow to terminal without
the need for cutting (Fig. 15).
Extensions of 250mm, 500mm & 1m are available.
The maximum permissible equivalent flue length is:
1. The flexible flue trims supplied can be fitted on the outer
and inner faces of the wall of installation.
8.4Terminal Guard (Fig. 16)
1. When codes of practice dictate the use of terminal guards
‘Multifit’ accessory part no. 720627901 can be used (Note:
This is not compatible with Flue Deflector referred to below).
Ensure that no part of the white outer
chimney duct is visible
Fig. 16
Flue Accessories & Fitting Guide
Ø 60/100 Flue Systems
Ø 80/125 Flue Systems
Ø 80/80 Twin Flue Systems
Plume Displacement Kit (Ø 60/100 Flue Systems)
READ THESE INSTRUCTIONS IN CONJUNCTION WITH THE BOILER
INSTALLATION INSTRUCTIONS BEFORE FITTING THE FLUE
GUIDANCE NOTES
IMPORTANT NOTE:This document
will assist in the correct installation of
the various flue & chimney systems
described within. However, it is the
responsibility of the installer/Gas Safe
registered commissioning engineer to
ensure that the flue & chimney system
is fitted safely and in compliance with
the relevant standards and practices in
force in the country of installation.
2. There must be a clearance of at least 50mm between any
part of the terminal and the guard.
3. When ordering a terminal guard, quote the appliance name
and model number.
4. The flue terminal guard should be positioned centrally over
the terminal and fixed as illustrated.
8.5Flue Deflector
1. Push the flue deflector over the terminal end. It may point
upwards as shown, or up to 45° either way from vertical.
Secure the deflector to the terminal with screws provided.
8.6Flue Accessories (Fig. 16a)
1. For full details of Flue Accessories (elbows, extensions,
clamps etc.) refer to the Flue Installation Guide supplied in the
literature pack.
The gas supply, gas type and pressure must be checked for
suitability before connection (see Section 7.4).
NOTE: a small amount of water may drain from the
boiler in the upright position.
1. See section ‘Safe Manual Handling’ before unpacking or
lifting the boiler.
RISK ASSESSMENT Before commencing the installation
it is recommended that the ‘Five Steps to Risk
Assessment’ document published by the HSE is
consulted, and an assessment performed as described.
2. Follow the procedure on the carton to unpack the boiler
or see Fig. 17.
3. If pre-plumbing (Fig. 18) - the wall jig and fitting kit can be
removed without removing the carton sleeve. Simply slide
banding to the edge and open the perforated flap, lift out
the jig, fitting kit and instructions. If the boiler is to be
installed at a later date, close the flap and reposition the
banding straps, the boiler can now be stored safely away.
To remove only the wall jig slide
banding to the edge and open flaps.
Fig. 18
For Side Flue Exit
Fig. 19
Flushing Tube
Slide the wall jig out of carton then
close the flaps. Slide banding back on.
145mm
Wall Plate
4. After considering the site requirements
(see Section 7.0) position the fixing template on the wall
ensuring it is level both horizontally and vertically.
5. Mark the position of the two most suitable fixing slots for
the wall plate and boiler lower fixing holes. It is preferable to
use the vertical fixing slots.
6. Mark the position of the centre of the flue hole (rear
exit). For side flue exit, mark as shown (Fig. 19).
7. If required, mark the position of the gas and water pipes.
Remove the template.
8. Cut the hole for the flue (minimum diameter 116mm).
9. Drill the wall as previously marked to accept the wall
plugs supplied. Secure the wall plate using the fixing screws.
10. Using a spirit level ensure that the plate is level before
finally tightening the screws.
11. Connect the gas and water pipes to the valves on the
wall plate using the copper tails supplied. Ensure that the
sealing washers are fitted between the connections.
12. Fit the filling loop as described in the instructions
supplied with it.
1. Connect a tube to the central heating flow or return pipe
(Fig. 20).
2. Flush thoroughly (see System Details, Section 6.2).
Fig. 20
23
Remove Sealing Caps from
under the Boiler after lifting
into position
9.0Installation
9.3Fitting The Boiler (Fig. 21)
1. Remove the sealing caps from the boiler connections.
NOTE: A small amount of water may drain from the boiler
once the caps are removed.
2. Lift the boiler as indicated by the shaded areas and the
bottom polystyrene. The boiler should be lifted by TWO
PEOPLE. Engage the slots at the top rear of the boiler on the
wall plate (see Safe Manual Handling page 5).
Fig. 21
Sealing
Washers
Lift Here
Both Sides
Bottom Polystyrene
When the Boiler Mounting Bracket on the
Boiler is in position on the Retaining Lugs,
the bottom polystyrene may be discarded
allowing the boiler to swing into position
3. Insert the sealing washers between the valves and pipes
on the wall plate and the boiler connections.
4. Tighten all the connections.
9.4Fitting the Safety Pressure Relief Discharge Pipe
(Fig. 22)
1. Remove the discharge pipe from the kit.
2. Determine the routing of the discharge pipe in the vicinity of
the boiler. Make up as much of the pipework as is practical,
including the discharge pipe supplied.
3. The pipework must be at least 15mm diameter and run
continuously downwards to a discharge point outside the
building. See section 6.7 for further details.
4. Utilising one of the sealing washers, connect the discharge
pipe to the adaptor and tighten the nut.
5. Complete the discharge pipework and route it to the
outside discharge point.
IMPORTANT: Make all soldered joints before connecting
to the pressure relief valve.
1. Connect the condensate drain to the trap outlet pipe.
Ensure the discharge of condensate complies with any
national or local regulations in force (see British Gas
“Guidance Notes for the Installation of Domestic Gas
Condensing Boilers”.
2. The connection will accept 21.5mm (
3
/4in) plastic overflow
pipe which should generally discharge internally into the
household drainage system. If this is not possible, discharge
into an outside drain is acceptable.
500mm
9.0Installation
Wall Thickness
(X)
Fig. 23
315mm
Connection Assembly
(X)
Terminal Assembly
Fig. 22
Wall
Thickness
9.6Fitting The Flue
HORIZONTAL TELESCOPIC FLUE
1. There are two telescopic sections, the Terminal
Assembly and the Connection Assembly, a roll of sealing
tape and two self tapping screws. A 93° elbow is also
supplied.
2. The two sections can be adjusted to provide a length
between 315mm and 500mm (Fig. 22) when measured
from the flue elbow (there is 50mm engagement into the
elbow).
3. Locate the flue elbow on the adaptor at the top of the
boiler. Set the elbow to the required orientation (Fig. 23).
NOTE: The flue elbow is angled at 93 degrees to
ensure a fall back to the boiler.
4. Measure the distance from the outside wall face to the
elbow. This dimension will be known as ‘X’ (Fig. 23).
5. If the distance from the flue elbow to the outside face of
the wall (‘X’ in Fig. 23) is less than 250mm the Connection
Assembly can be discarded and the Terminal Assembly
fitted directly into the elbow.
6. In instances where the dimension ‘X’ (Fig. 23) is between
250mm and 315mm it will be necessary to shorten the
Terminal Assembly by careful cutting to accommodate
walls of these thicknesses.
7. To dimension ‘X’ add 50mm. This dimension to be
known as ‘Y’.
Dimension ‘Y’
Fig. 24
‘TOP’ Label
‘TOP’ Label
Sealing Tape
Fig. 25
‘Peak’ to be uppermost
8. Adjust the two telescopic sections to dimension ‘Y’ and
seal the joint with the tape provided (Fig. 25). Ensure that
the labels marked ‘TOP’ on the Terminal and Connection
Assemblies are uppermost.
9. Using the clearance holes in the Connection Assembly
secure it to the Terminal Assembly using the screws
supplied (Fig. 26).
Apply the lubricant
supplied for ease of
assembly (do not use
any other type).
Ensure Flue is fully
engaged into Elbow
Flue Elbow
Adaptor
Fig. 27
9.0Installation
9.6Fitting the Flue (Cont)
10. Remove the flue elbow and insert the flue through the
hole in the wall.
11. Refit the elbow to the boiler adaptor, ensuring that it is
pushed fully in (Fig. 27).
12. Two flue trims are supplied, one for internal use, the
other for outside. The internal trim is packaged and
identified as such - it should not be used externally.
13. It is recommended that if the internal trim is being used
it is first fitted over the elbow to allow access to the
securing screws and then manouvered into place against
the wall.
14. Draw the flue back through the wall and engage it in
the elbow. It may be necessary to lubricate to ease
assembly of the elbow and flue (Fig. 28).
Flue to elbow
securing screws
Elbow to adaptor
securing screws
Trims
Fig. 28
15. Ensure that the terminal is positioned with the slots to
the bottom (Fig. 29). Secure the flue to the elbow with the
screws supplied (Fig. 28).
16. Secure the elbow flue to the boiler adaptor with the
screws supplied in the boiler fittings pack (Fig. 28).
IMPORTANT: It is essential that the flue terminal is fitted
as shown to ensure correct boiler operation and prevent
water entering the flue.
17. Make good between the wall and air duct outside the
building, appropriate to the wall construction and fire rating.
18. If necessary fit a terminal guard (see Section 8.4).
NOTE: Both the Live and Neutral connections are fused.
Integral Timer: If required the integral timer supplied in
the boiler installation kit should be fitted at this stage.
Fitting instructions are included with it.
To connect an external control proceed as follows:-
1. Slacken the facia panel securing screws and lift the
outercase panel so that its securing tabs are clear of the
facia. Remove the panel.
2. Completely undo the screws securing the facia panel and
hinge it down (Fig. 31).
3. Undo the terminal block cover securing screw and
remove the cover (Fig. 31).
Fig. 33
FusedSpur
L
N
Fused Spur
L
Fig. 31
Facia Panel
4. Slacken the unused cable clamp on the LH side of the
boiler chassis (Fig. 32). Insert the external control wiring
through the clamp and route it to the terminal block.
5. Refer to the instructions supplied with the control.
IMPORTANT: The room thermostat MUST be suitable
for 230V switching.
Room ‘Stat
N
NOTE: An external frost thermostat cannot be used in
conjunction with the integral timer supplied in the boiler
installation kit.
6. Remove the link between terminals 1 & 2. The 230V
supply at terminal 2 must be connected to the thermostat.
230V
g/y
bk
1
bk
2
The switched output from the thermostat must be
connected to terminal 2. (Fig. 33). If the room thermostat
N
L
b
br
being used incorporates an anticipator it MUST be wired as
shown in Fig. 33.
7. Ensure that the external control input cable(s) have
sufficient slack to allow the control box to drop down.
Tighten the cable clamp on the boiler chassis.
Frost Thermostat
N
Room ‘Stat
N
230V
8. Replace the terminal block cover, routing the external
control input cable(s) through the second cut-out.
9.8Preliminary Electrical Checks
bk
External Clock
230V
g/y
1
bk
2
1. Prior to commissioning the boiler preliminary electrical
system checks should be carried out.
2. These should be performed using a suitable meter, and
include checks for Earth Continuity,
N
L
b
br
Resistance to Earth, Short Circuit and Polarity.
NOTE: The 230V switched signal for external controls
(Frost Stat - Room Stat - Timer) must always be taken
from terminal 2 at the boiler. Live, Neutral and Earth to
power these controls must be taken from the Fused Spur.
1. Reference should be made to BS:EN 12828 & 14336 when
commissioning the boiler.
2. At the time of commissioning, complete all relevant sections
of the Benchmark Checklist at the rear of this publications.
3. Open the mains water supply to the boiler.
IMPORTANT: The heat exchanger air vent on top of the
boiler (Fig. 34) MUST be opened before filling the primary
system.
Fig. 35
Selector Switch
Reset
Fig. 37
Automatic Air
Pump
Display
Central Heating
Temperature Control
Pump
Vent
Fig. 36
2
1
3
4
0
bar
Domestic Hot Water
Temperature Control
Pressure Gauge
4. Open all hot water taps to purge the DHW system.
5. Ensure that the filling loop is connected and open, then open
the heating flow and return valves on the boiler.
6. Open the screw on the automatic air vent on the pump
body (Fig. 34).
7. The system must be flushed in accordance with BS 7593 (see
Section 6.2) and the flushing agent manufacturers instructions.
8. Pressurise the system to 1.5 bar (Fig. 36) then close and
disconnect the filling loop.
9. Turn the gas supply on and purge according to in GB BS
6891 and in IE I.S. 813 “Domestic Gas Installations”.
10. Test for gas soundness.
11. Hinge the facia panel upwards and refit the case front panel.
Tighten the securing screws.
12. Having checked:
• That the boiler has been installed in accordance with
these instructions.
• The integrity of the flue system and the flue seals.
• The integrity of the boiler combustion circuit and the
relevant seals.
Proceed to put the boiler into operation as follows:
11. The Combustion Check procedure as shown by the chart
in 10.2 is mandatory. The method of setting the boiler to
operate at maximum and minimum rates to comply with the
procedure is described below.
12. Ensure that all external controls are calling for heat. The
actual current boiler temperature is shown on the display.
13. Turn both control knobs fully anticlockwise, then quickly
turn the right hand knob 1/4 clockwise twice and back fully
anticlockwise (Fig. 37).
14. The display will now alternate between ‘SF’ and the current
boiler temperature and both green LEDs will flash.
15. To set to maximum rate.
Turn the left hand knob fully clockwise. As the knob is turned
the display will change, indicating the fan speed.
16. The display will show ‘00’, indicating maximum rate, then
revert to ‘P ‘ alternating with the current boiler temperature.
17. To set to minimum rate.
Turn the left hand knob fully anti-clockwise. As the knob is
turned the display will change, indicating the fan speed. When
the display reads ‘ 0’ the boiler runs at minimum rate.
18. This function is maintained for 20 minutes unless the
maximum CH temperature is exceeded. The function can be
disabled at any time by turning the right hand knob.
Verify Flue Integrity
Indication that products of
combustion & inlet air are
mixing - further investigation is
required.
Check all flue components are
correctly assembled, fixed &
supported. Check the flue &
terminal are unobstructed.
Is O
2 20.6% and
CO
2 < 0.2% ?
No
TURN APPLIANCE OFF !
Call 0344 871 1525 for
advice.
The appliance MUST NOT be
commissioned until all
problems are identified and
resolved.
Set Boiler to Maximum Rate
(see 10.1.11)
Allow the combustion to
stabilise. Do not insert probe to
avoid ‘flooding’ the analyser.
Perform Flue Integrity
Combustion Check
Insert the analyser probe into the
air inlet test point, allowing the
reading to stabilise.
No
Is O
2 20.6% and
CO
2 < 0.2% ?
Yes
Verify Integrity of Seals
Check all burner seals, internal
flue seals, door & case seals.
Replace any seals that appear
unsound.
Is CO < 350ppm and
CO/CO
2 ratio <
0.004 ?
Check CO & Combustion Ratio
at Maximum Rate
Whilst the boiler is still
Yes
operating at maximum insert the
analyser probe into the flue gas
test point, allowing the reading to
stabilise.
No
Is CO < 350ppm
and CO/CO
< 0.004 ?
Yes
10.0 Commissioning
10.2Checking Combustion
1. Follow the flow chart opposite.
Set Boiler to Minimum Rate
(see 10.1.17)
2 ratio
Yes
Allow the combustion to
stabilise. Do not insert probe to
avoid ‘flooding’ the analyser.
Check CO & Combustion Ratio
at Minimum Rate
Whilst the boiler is
operating at minimum insert the
analyser probe into the flue gas
test point, allowing the reading to
stabilise.
No
TURN APPLIANCE OFF !
Call 0344 871 1525 for advice.
The appliance MUST NOT be
commissioned until all
problems are identified and
resolved.
If commissioning cannot be fully
completed the appliance must be
disconnected from the gas supply
in accordance with the GSIUR.
Note: Check & record the CO &
combustion ratio at both
maximum & minimum rates before
calling 0344 871 1525.
No
Is CO < 350ppm and
CO/CO
2 ratio <
0.004 ?
Yes
BOILER OPERATING
SATISFACTORILY. NO
FURTHER ACTION
REQUIRED
Ensure test points are capped, the
boiler case front panel is correctly
fitted & secured and all other
commissioning procedures
completed.
Complete the ‘Benchmark’
Checklist, recording the CO &
combustion ratio readings as
required.
1. Ensure that all controls are calling for heat, and the selector
switch is in the central heating and hot water position ( ).
The current boiler temperature is shown on the display.
2. It is necessary to set the boiler to ‘Calibration Mode’.
Selector Switch
Reset
Gas Pressure
Test Point
Display
Central Heating
Temperature Control
Domestic Hot Water
Temperature Control
Gas Valve
1
0
Fig. 39
3. Turn both temperature control knobs fully anticlockwise,
1
then quickly turn the DHW temperature knob
2
3
4
bar
twice and back fully anticlockwise (Fig. 62).
4. The display will now alternate between ‘SF’ and the current
/4clockwise
boiler temperature and both green LEDs will flash (Figs. 63 &
64).
5. Turn CH temperature control knob fully clockwise. As the
knob is turned the display will change from ‘0’ to ‘00’ (Fig. 65)
indicating maximum rate, then revert to ‘P’ alternating with the
current boiler temperature (Figs 66 & 67).
6. With the boiler operating in the maximum rate condition
check that the operational (working) gas pressure at the inlet
gas pressure test point (Fig. 62a) is in accordance with B.S.
6798 & B.S. 6891.
7. Ensure that this inlet pressure can be obtained with all other
gas appliances in the property working.
Measure the Gas Rate
8. With any other appliances & pilot lights turned OFF the gas
rate can be measured. It should be between:-
3
25 model2.76 m
30 model3.17 m
/h
3
/h
Fig. 40
Fig. 43
Fig. 42
Fig. 44
Fig. 41
9. The ‘Calibration Function’ is active for 20 minutes unless the
maximum CH temperature is exceeded.
10. The function can be disabled at any time by turning the
DHW temperature knob.
11. Carefully read and complete all sections of the Benchmark
Commissioning Checklist at the rear of this publication that are
relevant to the boiler and installation. These details will be
required in the event of any warranty work. The publication
must be handed to the user for safe keeping and each
subsequent regular service visit recorded.
12. For IE, it is necessary to complete a “Declaration of
Conformity” to indicate compliance with I.S. 813. An example
of this is given in I.S. 813 “Domestic Gas Installations”. This is in
addition to the Benchmark Commissioning Checklist.
1. Instruct the user in the operation of the boiler and
system including the integral timer, explaining the
operational sequence.
2. Set the central heating and hot water temperature
control knobs to the requirements of the user.
3. Carefully read and complete all sections of the
Benchmark Commissioning Checklist at the rear of this
publication that are relevant to the appliance and
installation. These details will be required in the event of
any warranty work. The publication must be handed to the
user for safe keeping and each subsequent regular service
visit recorded.
4. For IE, it is necessary to complete a “Declaration of
Conformity” to indicate compliance with I.S. 813. An
example of this is given in I.S. 813 “Domestic Gas
Installations”. This is in addition to the Benchmark
Commissioning Checklist.
5. Hand over the Users Operating, Installation and
Servicing Instructions giving advice on the necessity of
regular servicing.
1. For reasons of safety and economy, it is recommended that
the boiler is serviced annually. Servicing must be performed by
a competent person in accordance with B.S. 7967-4.
2. After servicing, complete the relevant Service Interval Record
section of the Benchmark Commissioning Checklist at the rear
of this publication.
IMPORTANT: During routine servicing, and after any
maintenance or change of part of the combustion circuit, the
following must be checked:-
• The integrity of the complete flue system and the flue seals.
• The integrity of the boiler combustion circuit and relevant
seals as described in Section 12.2.
• The operational gas inlet pressure as described in Section
10.3.1 to 10.3.7 and the gas rate as described in 10.3.8.
• The combustion performance as described in ‘Check the
Combustion Performance’ (12.1.4 to 12.1.6 below).
3. Competence to carry out Checking Combustion
Performance
B.S. 6798 ‘Specification for Installation & Maintenance of Gas
Fired Boilers not exceeding 70kW’ advises that:-
• The person carrying out a combustion measurement should
have been assessed as competent in the use of a flue gas
analyser and the interpretation of the results.
• The flue gas analyser used should be one meeting the
requirements of BS7927 or BS-EN50379-3 and be calibrated
in accordance with the analyser manufacturers’ requirements.
• Competence can be demonstrated by satisfactory
completion of the CPA1 ACS assessment, which covers the
use of electronic portable combustion gas analysers in
accordance with BS 7967, Parts 1 to 4.
Inner Door
Panel
Fig. 47
Condensate
Trap
2
Check the Combustion Performance (CO/CO
ratio)
4. Set the boiler to operate at maximum rate as described in
Section 14.1.1 to 14.1.6.
5. Remove the plug from the flue sampling point, insert the
2
analyser probe and obtain the CO/CO
ratio. This must be
less than 0.004.
2
6. If the combustion reading (CO/CO
ratio) is greater than
this, and the integrity of the complete flue system and
combustion circuit seals has been verified, and the inlet gas
pressure and gas rate are satisfactory either:
• Perform the ‘Annual Servicing - Inspection’ (Section 12.2) &
re-check
• Adjust the gas valve (Section 14.0) & re-check
• Replace the gas valve (Section 13.23) & re-check
12.2Annual Servicing - Inspection
1. Ensure that the boiler is cool.
2. Ensure that both the gas and electrical supplies to the
boiler are isolated.
3. Slacken the screws securing the facia panel. Lift the outercase
panel so that its securing tabs are clear of the facia. Remove the
panel, allowing the facia to hinge down (Fig. 46).
4. Remove the screws securing the inner door panel. Lift the
panel slightly to disengage it from the studs on top of the case
(Fig. 47).
5. Unscrew the sump from the bottom of the condensate trap
Sump
assembly (Fig. 48) and remove any deposits from the sump and
trap. Clean as necessary and replace the sump.
Injector
Gas Pipe
Gas/Air Inlet
12.0 Servicing
12.2Annual Servicing - Inspection (Cont)
6. Undo the nut on the gas pipe at the gas/air inlet (Fig. 49)
and the gas valve. Remove the pipe, taking care not to lose
the sealing washers. Also remove the injector.
Fig. 49
Fig. 50
Fan Air Inlet Pipe
7. Disconnect the electrode lead caps, remove the strain
relief clip from the sensing lead and disconnect the lead.
Remove the fan electrical plugs and pull the sensing pipe off
the fan.
8. Undo the screw securing the fan air inlet pipe to the
bracket on the boiler top panel. Remove the pipe (Fig. 50).
9. Undo the five retaining nuts and washers and remove the
fan, gas/air inlet and burner assembly (Figs. 51).
10. Carefully clean any debris from the heat exchanger.
11. Inspect the burner, electrode position, insulation, and
gasket, cleaning or replacing if necessary. Clean any dirt or
dust from the air box.
12. Reassemble in reverse order.
DHW Filter
13. If the flow of domestic hot water is diminished, it may
be necessary to clean the filter.
14. Initially check the cold water inlet tap filter.
Fig. 51
Fan, Gas/Air Inlet &
Burner Assembly
Hall Effect
Hydraulic Inlet
Assembly
Sensor
Restricter
Threaded Bush
Blanking
Cap
Fig. 52
Cold Water
Inlet Tap
15. Turn the tap off and draw off from a hot tap. Undo the
blanking cap and remove the threaded bush
(Fig. 52).
16. Extract the filter and rinse thoroughly in clean water.
Reassemble and check the flow. If required clean the
restricter filter as described below.
17. Pull off the Hall Effect sensor. Undo the restricter from
the inlet/return manifold (Fig. 53).
18. Rinse the filter thoroughly in clean water and reassemble
in reverse order.
19. Turn the selector switch fully anticlockwise against the
spring pressure to the reset position and hold for 5 seconds
to reset the boiler.
20. Complete the relevant Service Interval Record section of
the Benchmark Commissioning Checklist at the rear of this
publication and then hand it back to the user.
both the gas and electrical supplies to the boiler are
isolated before any work is started. When the
component has been changed turn the selector switch
fully anticlockwise against the spring pressure to the
reset position and hold for 5 seconds to reset the boiler
before recommissioning.
See Section 12.2 “Annual Servicing” for removal of case
panel, door etc.
Electrode
Leads
Fig. 54
13.1Igniter (Fig. 54)
1. Disconnect the igniter feed plug and the electrode leads,
noting their positions.
2. Undo the nuts and screws securing the igniter to the
boiler top panel. Remove the igniter.
3. Fit the new igniter and reassemble in reverse order.
13.2Electrode Assembly (Fig. 55)
1. Disconnect the electrode lead caps, remove the strain
relief clip from the sensing lead and disconnect the lead.
2. Undo the screws securing the electrode assembly to the
combustion box panel and remove the assembly.
3. Check the condition of the sealing gasket and replace if
necessary. Reassemble in reverse order.
1. Undo the nut on the gas pipe at the gas/air inlet (Fig. 56)
and the gas valve. Remove the pipe, taking care not to lose
the sealing washers. Also remove the injector.
Fig. 56
Gas Pipe
Fig. 57
Fan Air Inlet Pipe
Gasket
2. Disconnect the electrode lead caps, remove the strain
relief clip from the sensing lead and disconnect the lead.
Remove the fan electrical plugs and pull the sensing pipe off
the fan.
3. Undo the screw securing the fan air inlet pipe to the
bracket on the boiler top panel. Remove the pipe (Fig. 57).
4. Undo the five retaining nuts and washers and remove the
fan, gas/air inlet and burner assembly (Fig. 58).
5. Remove the air box and gasket from the fan and transfer
to the new fan. Examine and replace the gasket if necessary.
6. Remove the four nuts and separate the fan from the
gas/air inlet. Note the position of the orifice plate and
examine the gasket, replacing if necessary (Fig. 58).
7. Fit the new fan, ensuring that the orifice plate is correctly
fitted, and that the gasket is in position.
8. Examine the insulation around the burner and the heat
exchanger gasket and replace if necessary.
9. Reassemble in reverse order, ensuring that the injector is
in place and the sensing pipe is connected to the fan.
Gas/Air Inlet
Gasket
Orifice Plate
Fig. 58
13.4Injector (Fig. 56)
1. Undo the nut on the gas pipe at the gas/air inlet and the
gas valve. Remove the pipe.
2. Extract and replace the injector and reassemble in reverse
order. Check the condition of the sealing washers, replacing
if necessary.
1. Undo the nut on the gas pipe at the gas/air inlet and the
gas valve. Remove the pipe, taking care not to lose the
sealing washers. Also remove the injector.
2. Disconnect the electrode lead caps, remove the strain
relief clip from the sensing lead and disconnect the lead.
Remove the fan electrical plugs and pull the sensing pipe off
the fan.
3. Undo the screw securing the fan air inlet pipe to the
bracket on the boiler top panel. Remove the pipe.
4. Undo the five retaining nuts and washers and remove the
fan, gas/air inlet and burner assembly.
5. Remove the electrode assembly and draw the insulation
piece away. Undo the burner securing screws.
6. Fit the new burner and gasket, examine the insulation and
heat exchanger gasket, replacing if necessary.
Electrode Assembly
Fig. 59
Burner
Insulation
7. Reassemble in reverse order.
13.6Insulation (Fig. 59)
1. Undo the nut on the gas pipe at the gas/air inlet and the
gas valve. Remove the pipe, taking care not to lose the
sealing washers. Also remove the injector.
2. Disconnect the electrode lead caps, remove the strain
relief clip from the sensing lead and disconnect the lead.
Remove the fan electrical plugs and pull the sensing pipe off
the fan.
3. Undo the screw securing the fan air inlet pipe to the
bracket on the boiler top panel. Remove the pipe.
4. Undo the five retaining nuts and washers and remove the
fan, gas/air inlet and burner assembly.
5. Remove the electrode assembly and draw the insulation
piece away. Replace the insulation and reassemble in
reverse order. Examine the heat exchanger gasket and
replace as necessary.
1. Drain the boiler primary circuit and remove the gas valve
as described in section 13.23.
2. While supporting the heat exchanger undo the screws
securing it to the brass manifolds.
3. Withdraw the heat exchanger upwards, taking care not to
damage any wires or controls.
Seals
4. There are four rubber seals between the manifolds and
heat exchanger which may need replacement.
5. Ease the seals out of the manifold. Replace carefully,
ensuring that when the seal is inserted into the manifold it is
parallel and pushed fully in.
6. When fitting the new heat exchanger note that the left
hand location stud is offset towards the centre more than the
right hand one.
7. Reassemble in reverse order.
13.19Diverter Valve - Motor Unit & Assembly
(Fig. 71)
Motor Unit
Multi-pin Plug
Valve
Assembly
Pressure Sensor
Fig. 71
Retaining Clip
1. To replace the motor unit, disconnect the multi-pin plug.
2. Pull off the retaining clip and remove the motor unit.
3. The motor unit can now be replaced, or the valve
assembly removed.
4. Drain the primary circuit and draw off any hot water once
the isolating taps are closed.
5. Undo the nuts on the tap rail under the boiler. Remove
the screws securing the valve assembly to the boiler bottom
panel and plate heat exchanger.
6. Remove the valve assembly. Examine any seals or washers,
replacing if necessary. Transfer the DHW NTC to the new
valve and reassemble in reverse order.
IMPORTANT: After replacing the valve the CO2must be
checked and adjusted as detailed in Section 14.0 Setting
the Gas Valve. Only change the valve if a suitable
calibrated combustion analyser is available, operated by a
competent - see section 12.1.
1. Turn the gas cock off and undo the nut on the gas feed
elbow under the boiler.
2. Remove the screws securing the gas valve to the boiler
bottom panel.
3. Pull off the power lead, earth lead and sensing pipe.
4. Undo the nut on the gas pipe at the gas/air inlet and the gas
valve. Remove the pipe, taking care not to lose the sealing
washers. Remove the valve.
5. Reassemble in reverse order., ensuring that all seals are in
place and the injector is fitted.
NOTE: To assist the boiler to light prior to final setting,
use a suitable hexagon key to wind out the Throttle
Adjustment Screw until it is flush with the valve body, then
turn the screw 4 full turns clockwise (Fig. 75). If the boiler
2
will not light, or the correct CO
cannot be achieved
contact the ‘heateam’ technical helpline.
Retaining Bracket
Boiler Chassis
Fig. 76
Spring
Washer
Lock Nut
Expansion Vessel
Fig. 75
12.24Expansion Vessel (Fig. 76)
1. Drain the boiler primary circuit and undo the nut on the
vessel connection pipe.
2. Remove the screw retaining the air inlet pipe, and swing the
pipe to one side.
3. Undo and remove the locknut and spring washer securing
the vessel spigot to the boiler lower panel.
4. Remove the bracket and vessel from the boiler.
5. Locate the retaining bracket on the upper flange of the new
vessel and fit to the boiler.
6. Examine the sealing washer, replacing if necessary, and
reassemble in reverse order.
IMPORTANT: The CO2must be only be checked and
adjusted to set the valve if a suitable calibrated
combustion analyser is available, operated by a competent
person - see Section 13.1
2
1. The combustion (CO
boiler for several minutes. To do this it is necessary to set the
boiler to ‘Calibration Mode’.
) may be checked after running the
Reset
Fig. 80
Plug
Analyser Probe
Central Heating
Temperature Control
Fig. 78
Flue Adaptor Test
Point
2
1
3
4
0
bar
Domestic Hot Water
Temperature Control
Fig. 79
Fig. 81Fig. 82
Fig. 83
2. Ensure that all external controls are calling for heat. The
actual current boiler temperature is shown on the display.
3. Turn both temperature control knobs fully anticlockwise,
1
then quickly turn the DHW temperature knob
/4clockwise
twice and back fully anticlockwise (Fig. 77).
4. The display will now alternate between ‘SF’ and the current
boiler temperature and both green LEDs will flash (Figs. 78 &
79).
5. Turn the CH temperature knob fully clockwise. As the knob
is turned the display will change, indicating the fan speed.
6. The display will show ‘00’, indicating maximum rate, then
revert to ‘P ‘ alternating with the current boiler temperature
(Figs 80, 81 & 82).
7. Remove the plug from the flue adaptor test point. Insert the
analyser probe and allow time for the reading to settle (Fig.
83).
2
The CO
The CO
8. It is possible to alter the CO
should be 9.0% + 0.0 - 0.4 (25)
2
should be 9.1% + 0.0 - 0.4 (30)
2
by adjustment of the gas valve.
Remove the plastic cover from the Throttle Adjustment Screw.
At maximum rate the Throttle Adjustment Screw should be
turned, using a suitable hexagon key, until the correct reading is
2
obtained (Fig. 84). Turning clockwise will reduce the CO
2
Anticlockwise will increase th e CO
.
.
Offset
Adjustment Screw
(cap fitted)
Reduce CO
at min. rate
2
Increase CO
at min. rate
2
If the CO2is reset at minimum
rate it must be rechecked at
maximum rate again and adjusted
if required. If the CO2is reset at
maximum rate it must be
rechecked at minimum rate and
adjusted if required.
Do not turn the adjustment
screws more than 1/8 of a turn at
a time. Allow the analyser reading
to settle before any further
adjustment
Increase CO
at max. rate
9. The CO
2
must then be checked at minimum rate. Turn the
CH temperature knob fully anticlockwise. As the knob is
turned the display will change, indicating the fan speed. When
the display reads ‘ 0’ the boiler runs at minimum rate.
2
The CO
10. With the boiler on minimum, the ‘Min. Rate’ adjustment
2
should be 8.4% + 0.0 - 0.4
screw must be altered, using a suitable hexagon key, after
2
removing the cap (Fig. 84). If the CO
is reset at either boiler
rate it must be rechecked at the other rate and also adjusted if
required.
11. The ‘Calibration Function’ is maintained for 20 minutes
unless the maximum CH temperature is exceeded. The
function can be disabled at any time by turning the DHW
knob.
selector to the reset position turn the
selector switch fully anticlockwise against
the spring pressure to the reset position
and hold for 5 seconds to reset the
boiler.
1. Check that gas, water and electrical supplies are available
at the boiler.
2. Electrical supply = 230V ~ 50 Hz.
3. CH water system pressurised to 0.5 bar minimum when
the boiler is cold.
4. The preferred minimum gas pressure is 20 mbar.
5. Carry out electrical system checks, i.e. Earth Continuity,
Resistance to Earth, Short Circuit and Polarity with a suitable
meter.
NOTE: These checks must be repeated after any
servicing or fault finding.
6. Ensure all external controls are calling for heat and check
all external and internal fuses. Before any servicing or
replacement of parts, ensure the gas and electrical supplies
are isolated.
17.2Error Codes
Table Of Error Codes
E20
E28
E50
E110
E119
E125
E133
E160
Central Heating NTC Fault
Incorrect PCB Fitted
Hot Water NTC Fault
Safety Thermostat Operated
Water Pressure Switch Not Operated
Circulation Fault (Primary Circuit)
Interruption Of Gas Supply or Flame Failure
Fan or Fan Wiring Fault
1. If a fault occurs on the boiler an error code may be shown
by the facia display.
2. The codes are either two or three digit, preceded by the
letter 'E'. For example, code E133 will be displayed by 'E1'
alternating with '33'. E50 is shown as 'E' then '50'
E20, E28 & E50 indicate faulty or incorrect components.
E110 shows overheat of the primary water.
E119 is displayed when the primary water pressure is less
than 0.5 bar.
E133 indicates that the gas supply has been interrupted,
ignition has failed or the flame has not been detected.
E125 is displayed in either of two situations:i) If within 15 seconds of the burner lighting the boiler
temperature has not changed by 1°.
ii) If within 10 minutes of the burner lighting the boiler
temperature twice exceeds the selected temperature by 30°.
In these instances poor primary circulation is indicated.
3. By turning the selector switch to the 'Reset' position for a
minimum of 5 seconds when E110 & E133 are displayed it is
possible to relight the boiler.
E20 or E50 - Temperature sensors faulty.
Cold resistance approximately
10k @ 25° C (DHW and CH sensors)
20k @ 25° C (Flue sensor)
(resistance reduces with increase in temp.)
E28 - Incorrect PCB fitted
1.
Check and correct the connection of the
tube between the venturi and gas valve
2.
Gas at burner
1.
Ensure that the Hall Effect Sensor is in position.
Check the connection between the PCB - X400
connector terminals 3,6,7 and the electronic sensor
NO
Ensure gas is on and purged
PCB - X3 connector is 230V AC across
NO
terminals 1 & 2
NO
Replace PCB
Replace sensor or PCB (E28)
YES
YES
Check the voltage between red wire and blue
wire is more than 5V DC
NO
Replace gas valve
YES
H
Check and correct if necessary
1. Ignition electrode and lead
2. Electrode connection
3. Spark gap and position
voltage at PCB - X2 connector is
110V AC across terminals 2 & 5
YES
(Note: from multimeter connect
‘common’ to 2 & ‘volts’ to 5)
Check wiring
This Commissioning Checklist isto be completed in full by the competent person who commissioned the boiler as a means of demonstrating
compliance with the appropriate Building Regulations and then handed to the customer t
o keep for future reference.
Failure to install and commission according to the manufacturer’s instructions and complete this Benchmark Commissioning Checklist will invalidate the
warranty. This does not affect the customer’s statutory rights.
GAS BOILER SYSTEM COMMISSIONING CHECKLIST
Customer name:Telephone number:
Address:
Boiler make and model:
Boiler serial number:
Commissioned by (PRINT NAME):Gas Safe register number:
Company name:Telephone number:
Company address:
Commissioning date:
CONTROLS (tick the appropriate boxes)
Time and temperature control to heating
Room thermostat and programmer/timerProgrammable room thermostat
Load/weather compensationOptimum start control
Time and temperature control to hot waterCylinder thermostat and programmer/timerCombination Boiler
Heating zone valvesFittedNot required
Hot water zone valvesFittedNot required
Thermostatic radiator valvesFittedNot required
Automatic bypass to systemFittedNot required
Boiler interlockProvided
ALL SYSTEMS
’s instructionsYes
What system cleaner was used?
What inhibitor was used?Quantity litres
YesN o
CENTRAL HEATING MODE measure and record:
Gas ratem³/hrORft³/hr
Burner operating pressure (if applicable)mbarOR Gas inlet pressurembar
°C
Central heating return temperature°C
COMBINATION BOILERS ONLY
Is the installation in a hard water area (above 200ppm)?YesN o
YesN o
DOMESTIC HOT WATER MODE Measure and Record:
Gas ratem³/hrORft³/hr
Burner operating pressure (at maximum rate)mbar OR Gas inlet pressure at maximum ratembar
Cold water inlet temperature°C
Hot water has been checked at all outletsYesTemperature°C
I/min
CONDENSING BOILERS ONLY
The condensate drain has been installed in accordance with the manufacturer’s instructions and/or BS5546/BS6798Yes
ALL INSTALLATIONS
Record the following:
At max. rate: CO ppm ANDCO/CO
²
Ratio
At min. rate: (where possible) CO ppm ANDCO/CO
²
Ratio
The heating and hot water system complies with the appropriate Building RegulationsYes
The boiler and associated products have been installed and commissioned in accordance with the manufacturer’s instructionsYes
The operation of the boiler and system controls have been demonstrated to and understood by the customerYes
The manufacturer’s literature, including Benchmark Checklist and Service Record, has been explained and left with the customerYes
Commissioning Engineer’s Signature
Customer’s Signature
www.centralheating.co.uk
54
www.centralheating.co.uk
It is recommended that your heating system isserviced regularly and thatthe appropriate Service Interval Record is completed.
Service Provider
Before completing the appropriate Service Record below, please ensure you have carried out the service as described in the manufacturer’s instructions.
SERVICE RECORD
SERVICE 01
Date:
Engineer name:
Company name:
Telephone No:
Gas safe register No:
Record:
At max. rate:CO ppm ANDCO² %
At min. rate:
(Where Possible) CO ppm ANDCO
²
%
Comments:
Signature
SERVICE 02
Date:
Engineer name:
Company name:
Telephone No:
Gas safe register No:
Record:
At max. rate:CO ppm ANDCO² %
At min. rate:
(Where Possible) CO ppm ANDCO
²
%
Comments:
Signature
SERVICE 03
Date:
Engineer name:
Company name:
Telephone No:
Gas safe register No:
Record:
At max. rate:CO ppm ANDCO² %
At min. rate:
(Where Possible) CO ppm ANDCO
²
%
Comments:
Signature
SERVICE 04
Date:
Engineer name:
Company name:
Telephone No:
Gas safe register No:
Record:
At max. rate:CO ppm ANDCO² %
At min. rate:
(Where Possible) CO ppm ANDCO
²
%
Comments:
Signature
SERVICE 05
Date:
Engineer name:
Company name:
Telephone No:
Gas safe register No:
Record:
At max. rate:CO ppm ANDCO² %
At min. rate:
(Where Possible) CO ppm ANDCO
²
%
Comments:
Signature
SERVICE 06
Date:
Engineer name:
Company name:
Telephone No:
Gas safe register No:
Record:
At max. rate:CO ppm ANDCO² %
At min. rate:
(Where Possible) CO ppm ANDCO
²
%
Comments:
Signature
SERVICE 07
Date:
Engineer name:
Company name:
Telephone No:
Gas safe register No:
Record:
At max. rate:CO ppm ANDCO² %
At min. rate: (Where Possible) CO ppm ANDCO² %
Comments:
Signature
SERVICE 08
Date:
Engineer name:
Company name:
Telephone No:
Gas safe register No:
Record:
At max. rate:CO ppm ANDCO² %
At min. rate: (Where Possible) CO ppm ANDCO² %
Comments:
Signature
SERVICE 09
Date:
Engineer name:
Company name:
Telephone No:
Gas safe register No:
Record:
At max. rate:CO ppm ANDCO² %
At min. rate:
(Where Possible) CO ppm ANDCO
²
%
Comments:
Signature
SERVICE 10
Date:
Engineer name:
Company name:
Telephone No:
Gas safe register No:
Record:
At max. rate:CO ppm ANDCO² %
At min. rate:
(Where Possible) CO ppm ANDCO
²
%
Comments:
Signature
*All installations in England and Wales must be
to Local Authority Building Control (LABC) either directly or through a
Competent Persons Scheme. A Building Regulations Compliance
Please ensure the boiler is installed in accordance with these installation
instructions and that you adhere to the Building Regulations.
e&oe
All descriptions and illustrations provided in this document have been
carefully prepared but we reserve the right to make changes and
improvements in our products which may affect the accuracy of the
information contained in this leaflet. All goods are sold subject to our
standard Conditions of Sale which are available on request.
0086
part of
7219660 - 01 (04/15)
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