Broseley eVolution 8 Manual

GB0113 Issue 4 1
Installation & Operating
Instructions
Covering Model:
eVolution 8 Wood Burning Boiler Stove
Tested to EN 13240
These appliances must be installed and commissioned by a HETAS registered engineer

GB0113 Issue 4 2
Contents
ImportantInformation 3
Health&Safety 4
Specifications 5
PackingList 5
Dimensions 6
Hearth Requirements & Clearances 7
Chimney Requirements 8
Combustion Air Requirements 9
Assembly 10
PlumbingAdvice 11
Plumbing Maintenance 18
Plumbing Diagrams 19
Commissioning & Handover 28
Stove Operation
Controls Layout 29
Controls Explained 30
Recommended Fuels 31
Lighting the Stove
Kindling Stage 32
Burning Wood 33
WarningNotes 34
Maintenance
AshRemoval 35
ChimneyFires 35
General Stove Cleaning 35
GlassCleaning 35
Annual Stove Service 35
Chimney Sweeping 35
Flue Ways & Boiler Cleaning 35
Trouble-shooting 36
CommissioningForm 37
ECDeclaration 39
Annual Service Record 40
Warranty 41

GB0113 Issue 4 3
Important Information
In order for the this product to carry full warranty and support from Broseley Fires, the
installation MUST be designed, installed and commissioned by a competent person with
one of the following minimum technical competence sets
Set One Installer has HETAS Wet H004 and G3 Unvented certificates.
Set Two Installer has HETAS Biomass H005 certificate.
Set Three Installer has MCS Biomass certificate.
For installations onto open vented heating systems the G3 certificate is not required.
If your installation involves other heat sources (solar, gas, electric and heat pumps)
then additional competences will be required.
Roles & Responsibilities
It is the responsibility of the retailer to ensure that prospective customer is made fully aware
of the installation requirements as well as the responsibilities mentioned below:
•It is the responsibility of the end customer to make sure that their chosen installer
meets the minimum competence requirements.
•It is the installer’s responsibility to ensure that the installation is carried out in
accordance with the Broseley Fires installation instructions as well as current
building regulations. Installations not complying with Broseley Fires installation
instructions will not be supported in any way.
INSTALLATIONS CARRIED OUT BY ANY INSTALLER NOT MEETING THE MINIMUM
REQUIREMENTS, WILL RESULT IN VOID PRODUCT WARRANTIES AND WILL NOT
BE SUPPORTED BY BROSELEY FIRES IN ANY WAY.
Please note Broseley Fires do not design heating systems, however we do offer guidance
in these instructions on the minimum requirements of the system. The installer is
responsible for any and all aspects of the installation. A site survey will be necessary
to assess the heat requirement of the property and the suitability of the appliance for the
clients needs. The heating system will need to be designed by the installer and detailed
plans produced.
It may be necessary for other tradesman and sub-contractors to become involved in the
installation (such as electricians) these individuals should be working to the installers plans
and specifications. The installer is ultimately responsible for the final installation
(hence they will need to approve all sub-contracted work). Finally the installer MUST
provide a commissioning certificate to the client for the final completed installation.

GB0113 Issue 4 4
Health & Safety
Special care must be taken when installing the stove such that the requirements of the
Health and Safety at Work Act are met.
Installation
This appliance MUST be installed and commisioned by a HETAS registered installer in
England and Wales and a fully qualified Heating Engineer in Scotland and Ireland.
Handling
Adequate facilities must be available for loading, unloading and site handling.
Fire Cement
Some types of fire cement are caustic and should not be allowed to come into contact with
the skin. In case of contact wash immediately with plenty of water.
Asbestos
This stove contains no asbestos. If there is a possibility of disturbing any asbestos in the
course of installation then please seek specialist guidance and use appropriate protective
equipment.
Metal Parts
When installing or servicing this stove care should be taken to avoid the possibility of
personal injury.
CO Alarms
Building regulations require that whenever a new or replacement fixed solid fuel or
wood/biomass appliance is installed in a dwelling an audible carbon monoxide alarm must
be fitted in the same room as the appliance. Further guidance on the installation of the
carbon monoxide alarm is available in BS EN 50292:2002 and from the alarm
manufacturer’s instructions. Provision of an alarm must not be considered a substitute for
either installing the appliance correctly or ensuring regular servicing and maintenance of
the appliance and chimney system.
Fire Guards
When using the stove in situations where children, aged and/or infirm persons are present
a fireguard must be used to prevent accidental contact with the stove. The fireguard should
be manufactured in accordance with BS 6539.
Aerosol Sprays
Do not use an aerosol spray on or near the stove when it is alight.
Operating Tool & Gloves
Always use the operating tool and glove provided when handling parts likely to be hot when
the stove is in use.

GB0113 Issue 4 5
Specifications
In the UK these stoves have been approved by HETAS Ltd as intermittent heating
appliances for burning Hardwood logs only.
Nominal total heat output 8.4
Nominal heat output to room (kW) 2.3
Nominal heat output to water (kW) 6.1
Flue diameter MINIMUM 150mm/6”
Efficiency % 79.2
Maximum fuel load of wood to maintain nominal output (Kg / hr) 2.25 Kg
Maximum wood length – Must be Split Logs 350mm
Wood Moisture Content Less than 20.00%
Temperature exhaust gas – wood (ºC) 268
Optimal working temperature 70º - 75º
Flow & return pipe fitting (Female) 3/4” BSP
SCWS flow & outlet pipe fittings (Male) 1/2” BSP
Flue draft Pressure (Pascals) 12 – 18
Minimum flue height in meters (straight) 5
Maximum working temperature 94º - 95º
Maximum allowable water pressure (bar) 3
Ventilation – Airbrick Requirement = 21 x 550mm² 11550mm²
Appliance Weight (Kg) 209
European standards need to be complied to when installing this appliance.
Packing List
1x Cast Steel Stove 1x Log retainer
1x Rear Firebrick 1x Spigot & Fixings
2x Rear Side Firebricks 1x Steel Lid
2x Bottom Rear Firebricks 1x Glove Set
2x Bottom Side Firebricks 1x Grate
2x Side Firebricks 1x Instruction Booklet
1x Bottom Front Firebrick 2x Brass 18-3/4 Compression Fixings
1x Ashpans
All separate parts will be inside the main stove body.

GB0113 Issue 4 6
Dimensions
All dimensions are in millimetres

GB0113 Issue 4 7
Hearth Requirements & Clearances
This appliance is suitable for non-combustible hearths with a minimum thickness of
12mm, they do not require a full constructional hearth.
Your stove must be installed on a solid, level non-combustible hearth. The hearth
protrusion in front of the stove to carpets or wooden floors must be at least 300mm. As it is
possible, that on opening the door of the stove for fuel to fall out, a fender must be fitted if
the hearth is flush with the carpet. These are just a few hearth specifications. Please refer
to Building Regulations Approved Document J (Hearths) for more specific details.
Clearances
The stove requires the following clearances around it to ensure the heat is released into the
room and to allow sufficient combustion air flow. A combustible material clearance is given
to prevent damage to any items that may be affected by heat.
Stove Clearances Rear Side Hearth Above
Non-Combustible 100mm 100mm 300mm 200mm
Combustible 200mm 200mm 300mm 600mm

GB0113 Issue 4 8
Chimney Requirements
This appliance must not be fitted into a chimney serving another heating appliance. It is
most important that there is no obstruction in the flue or chimney. Please ensure that any
existing chimney is clear of obstruction and swept clean immediately before installation of
the new stove. If the chimney has been used for an open fire it is recommended that it be
swept for a second time having been used for a month following installation.
A flue draught minimum of 12 Pascals to a maximum 18 Pascals is required for satisfactory
appliance performance. A properly built masonry or factory constructed chimney (with a
minimum vertical height of 5 metres) should ensure a consistent draught (draw). 45° bends
can be used in the flue run (maximum of four bends) you will need to add an extra 1 metre
of vertical flue height for each bend.
The flue draught should be checked under fire at high output and if it exceeds the
recommended maximum, a draught stabiliser must be fitted so that the rate of burning can
be controlled, and to prevent over firing (See section “Warning Notes”). If you have any
doubts about the suitability of your chimney, consult your local dealer/stockist or engineer.
If your flue draft is below the minimum recommendation then it may be neccesary to
increase the vertical chimney height, add additional flue insulation or possibly add a special
cowl to the top of the chimney (e.g. anti down draft cowl to eliminate wind induced down
draft).
The outlet from the chimney should be above the roof of the building in accordance with the
provisions of Building Regulations Approved Document J.
If installation is into an existing chimney then it must be sound and have no cracks or other
faults which might allow fumes into the house. Older properties, especially, may have
chimney faults or the cross section may be too large i.e. more than 230 mm x 230 mm.
Remedial action should be taken, if required, seeking expert advice, if necessary. If it is
found necessary to line the chimney then a flue liner suitable for solid fuel must be used in
accordance with Building Regulations Approved Document J.
If there is no existing chimney then either a prefabricated block chimney in accordance with
Building Regulations Approved Document J or a twin walled insulated stainless steel flue to
BS 4543 can be used. These chimneys must be fitted in accordance with the
manufacturer’s instructions and Building Regulations.
If a flexible liner is required the liner diameter must not be less than 6”.
Any bend in the chimney or connecting fluepipe should not exceed 45°. 90° bends are not
permitted. . For top flue installations it is possible to sweep through the appliance by
removing the internal baffle however it is recommended that you provide adequate access
(e.g. easily accessible soot door).

GB0113 Issue 4 9
Combustion Air Requirements
In order for the stove to perform efficiently and safely there should be an adequate air
supply into the room in which the stove is installed to provide combustion air. This is
particularly necessary in modern houses where drafts have been almost eliminated by
double glazing etc.
Under UK building regulations any appliance over 5kW MUST have a fixed
permanent air vent (see building regulations approved document J for further
information).
There must not be an extractor fan fitted in the same room as the stove as this can cause
the stove to emit fumes into the room. It is necessary to install a wall vent to provide the
necessary combustion air and to prevent the depletion of oxygen in the room.
It is possible to direct vent this appliance by connecting a 100mm/4” diameter pipe to the
spiggot on the back of the appliance using a suitable pipe and clip (not supplied).
Rear view of the appliance at the bottom

GB0113 Issue 4 10
Assembly
The images below shows the sequence for removing the firebricks.
1. Lift and rotate the lid to one side to
reveal the top fixings for the side panels,
slacken and repeat for both sides. 10mm
spanner required.
2. In the base of the stove (on each side)
you will find the lower fixing for the side
panels, these will also need to be
slackened. You should now be able to
remove the side panel(s) by lifting them up.
3. On the exposed white fibre-board of the
side panel you will see a nut and washer,
this needs to be removed in order to
remove the fibre-board.
4. Slide the fibre-board up and out of the
stove, you should now be able to see one f
inal nut. With the nut removed you should
be able to remove the retaining clip that is
holding the internal side firebrick.
You should now be able to replace any of
the firebricks through the main door. Simply
reverse this process to replace the clip,
board and side panel.

GB0113 Issue 4 11
Plumbing Advice
Please read through the information given in “Important Information” (Page 3 of
these instructions) for the responsibilities and minimum requirements of the
installer. Please note any installations carried out by installers not meeting these
requirements will result in void product warranty and will not be supported by
Broseley Fires.
If connected to an unvented heating system, this appliance must (as a minimum) have the
following components installed on the system to ensure the safe operation of the appliance:
1) WATTS STS20 – Thermal discharge Valve (supplied)
2) WATTS KSG 30 – Safety Pressure Relief Valve (supplied)
3) Expansion Vessel comprising 7% of the total system volume (not supplied)
1) scws Discharge ½” BSP
2) Air bleed valve
3) Boiler return 3/4” BSP
4) Boiler flow 3/4” BSP
5) SCWS Inlet 1/2” BSP
6) SCWS probe (STS20)
Open Vented Modifications
When connecting to open vented systems the copper pipes at low level will have to be
removed from the flow (4) and return (3) so that pipe work runs directly from the boiler
itself, thus ensuring that a gravity circuit can be achieved. The back panel will need to be
modified to reflect the raised pipe connections.
The safety cold water system (quench coil Components 1, 5 & 6) can still be utilised if
running the stove open vented but does not have to be used. If being used, connect the
safety cold water system as described in the installation guide. If the safety cold water
system is not being utilised then you can remove the pipe work (1 & 5) and cap off the
SCWS flow tapping and leave the return un-capped. The probe (6) should also be removed
and capped off.

GB0113 Issue 4 12
sized and provided by the heating engineer.
Plumbing Advice
The eVolution 8 Stove differs from normal boiler stoves in the fact that it can be installed on
an open vented or sealed heating system. When installing the appliance on a sealed
system, it is necessary to install added safety features which allow the stove to be installed
safely.
The eVolution has several options regarding water circuit safety. The components used,
and why each is required, are detailed below. 

DESCRIPTION OF SAFETY COMPONENTS 

SCWS

The SCWS prevents the boiler reaching
100°C. This works by transferring the heat in
the boiler away through a secondary quench
coil situated inside the boiler. The quench coil
is activated by a thermal safety valve (Watts
STS20) which activates at 97°C. The thermal
safety valve needs to be connected to mains
water and drained suitably through an outside
wall, in accordance with G3 regulations. 

The Thermal Safety Valve needs to be connected to a mains water supply and then to the
quench coil in the boiler. Both openings are ¾ inch female connections. There should be a
minimum pressure of 1.5 bar mains water supply to the SCWS. The maximum operating
pressure is 8 bar. 

IF YOU CANNOT GUARANTEE A SUITABLE WORKING PRESSURE THEN THE
APPLIANCE SHOULD NOT BE INSTALLED

The discharge from the safety coil needs to be
discharged through an outside wall and terminated at
a low level within a 100mm through a metal pipe that
naturally drains. The discharge pipe should be in
accordance with G3 regulations. The thermal safety
valve probe needs to be inserted into the tube and ½
inch tapping in the rear of the boiler. 

To ensure correct operation of the thermal safety drain over the
long-term, periodic drainage of the valve is required (at least once
a year); to perform such operation, press the red discharge
button located at the top of the valve head. Such operation allows
cleaning the seal seat where foreign particles build up. After a
certain number of periodic cleaning operations, it is advisable to
replace the valve plug which is supplied as spare part.

GB0113 Issue 4 13
Plumbing Advice
Safety blow off
The safety blow off valve acts as a final safety option in case of
failure of the SCWS. This is supplied incorporating a 3bar
pressure relief valve, a pressure gauge and an automatic air
vent. This must be placed within 1 meter of the appliance.
The safety blow off discharge pipework should will be 28mm
pipe work
N.B. the use of a quench coil does not affect the primary system volume and therefore
allows the system to recover and resume normal operation when the boiler has cooled
adequately. The use of the pressure blow off however will reduce the primary water volume
and drop the system pressure this will require the system to be refilled and checked before
it can be used again. Running a boiler without water in it can damage the appliance and
pumps allowed to run without water in them will quickly overheat and fail.
Back end protection

The back end protection is a three-way valve (regulated by
temperature) that improves the efficiency of the boiler, reduces
condensation and actively prolongs the longevity of the boiler. It
does this by not allowing cold water from the heating system to be
directly introduced into the boiler until a desired temperature is
reached, in this case 55°C.
The valve used is an ESBE VTC511 or equivalent.
•Improves efficiency by not robbing heat from the fire.
•Reduces boiler condensation and prolongs the life of the boiler by not allowing water
from condensation to mix with smoke particles potentially creating harmful acids and
toxins which can have detrimental effects on the boiler.
•Helps reduce tarring inside the appliance and flue
Tarring may also result from burning wet wood with a moisture content greater than 20%

GB0113 Issue 4 14
Plumbing Advice
Expansion vessels
The boiler must be directly connected to the expansion vessel in the system using a pipe
with a diameter no smaller than 18mm. The piping must not be obstructed in any way. The
expansion vessel must be at least 7% of volume of the total heating system. The expansion
vessel should be fitted on the suction side of the pump. The point at which it is fitted is
generally accepted as being the neutral point of the system. An expansion vessel is divided
into two compartments and separated by a flexible diaphragm. The sealed side is charged
with nitrogen gas. The open side is connected to the system.
Sizing of an expansion vessel: 

Sizing of an expansion vessel is very important as the expansion vessel must be large
enough to accommodate all the expansion of the water. 

•The volume of water contained within the system. Manufacturers supply data which
includes water capabilities of such things as boilers and heat emitters.
•Initial pressure of system, or pre-pressurisation, calculated from the static height
which is the vertical distance from the expansion vessel to the highest point.
•The boiler flow temperature. Should the volume fall between two sizes, the larger
size must be used. The volume of the expansion vessel in litres fitted to a sealed
system shall not be less than that given by the table below.
Safetyvalvesetting(bar)
3
Vessel charge pressure (bar) 0.5 1
1.5
Initial system pressure (bar) 0.5 1
1.5
211.521.5
2
Totalwatercontent of system
Expansion Vessel Volume (litres)
25 2.1 3.5 6.5 13.7 2.7 4.7 10.3 3.9 8.3
50 4.2 7 12.9 27.5 5.4 9.5 20.6 7.8 16.5
75 6.3 10.5 19.4 41.3 8.2 14.2 30.9 11.7 24.8
100 8.3 14 25.9 55.1 10.9 19 41.2 15.6 33.1
125 10.4 17.5 32.4 68.9 13.6 23.7 51.5 19.5 41.3
150 12.5 21 38.8 82.6 16.3 28.5 61.8 23.4 49.6
175 14.6 24.5 45.3 96.4 19.1 33.2 72.1 27.3 57.9
200 16.7 28 51.8 110.2 21.8 38 82.1 31.2 66.2
250 20.8 35 64.7 137.7 27.2 47.5 103 39 82.7
300 25 42 77.7 165.3 32.7 57 123.6 46.8 99.3
350 29.1 49 90.6 192.8 38.1 66.5 144.2 54.6 115.8
400 33.3 56 103.6 220.4 43.6 76 164.8 62.4 132.4
450 37.5 63 116.5 247.9 49 85.5 185.4 70.2 148.9
500 41.6 70 125.9 275.5 54.5 95 206 78 165.5

GB0113 Issue 4 15
Plumbing Advice

Alarms
It is not a requirement to fit an alarm on the system, but it is recommended. The alarm will
act as a warning to the customer if the SCWS should operate. The alarm should be fitted to
the SCWS discharge pipe and should register an increase in temperature when the SCWS
is in operation. The customer should be notified that if this SCWS system/alarm is
continually operating that measures should be taken to stop the overheating of the
appliance. Measures to take are as follows: 

1) Close all the air controls, including the tertiary and thermostatic air controls

2) Run hot water tap to remove some of the hot water in the cylinder (if fitted)

The customers should also be made aware that if there is constant operating of the SCWS,
they should contact the installer to diagnose any problems with the system.
N.B. A boiler that is too large for the required heat load will trigger the SCWS too often and
should therefore be replaced by a boiler that is better suited to the heating load.
It is mandatory to fit the safety components below when running a
closed/pressurised system. Failure to install these components will void your
guarantee and warranty, and risk the possibility of damage, to the extent of the boiler
exploding.
Table of required safety components
SafetyComponent
SCWS n/a Mandatory Mandatory
Safety Blow Off n/a n/a Mandatory
BackEnd Protection n/a Recommended Mandatory
Expansion Vessel n/a n/a Mandatory
Alarm n/a Recommended Recommended
Open Vented
– Gravity Open Vented - Pumped Pressurised

GB0113 Issue 4 16
Plumbing Advice
Plumbing the Appliance – Open Vented
This installation should be in accordance with BS 5449:1990 - Specification for
forced circulation hot water central heating systems for domestic premises.
It must include a gravity circuit with an expansion tank open to the atmosphere.
When installing this appliance on a gravity circuit, the system should consist of a
tank/indirect cylinder fixed in an upright position and should be connected to the boiler by
28mm pipe (both flow and return). The pipes should not exceed 7.8m in length. The shorter
the run of pipe work the more effective the appliance is going to be at heating the water.
The cylinder and pipe work should be lagged to minimise the heat loss in the system. 

A ‘heat-leak’ radiator must be incorporated into the system to dissipate any excess heat
produced from the boiler when connected demands are low. The heat leak radiator must be
sized at a minimum of 10% the boiler output. Fit the heat leak radiator in the gravity circuit
using 22mm pipe reducing to 15mm for no more than 300mm before the radiator.
When plumbing the appliance open vented you will need to cap the SCWS discharge pipe
(D) but leave the SCWS flow uncapped (C) The SCWS probe hole will also need to be
capped (E) as it is not needed. (Letters refer to diagram on page 13).

Plumbing the appliance sealed/pressurised system 

When installing the appliance on a closed/pressurised system the safety components
mentioned previously MUST be installed. Failure to do this could have very serious
consequences and will void your guarantee and warranty. We have given some examples
at the back of this plumbing advice on how the appliance can be installed in typical
situations. These illustrations should be taken as a guide and not a definitive plumbing
diagram. There is no requirement for a heat leak radiator on a closed system; we would
however recommend installing one radiator that has no thermostat.
Link Up Systems 

It is possible to link the eVolution stove to other boilers on a pressurised/closed system.
This however can cause problems with ‘conflicts’ between the two boilers. Any solid fuel
appliance with a boiler can be linked to an existing or new central heating system fired by
another fuel or a second solid fuel appliance. This means that the central heating can be
heated by one or both boilers in tandem, depending on the heat demand.
When linking two or more heat sources together on a sealed system there are a number of
ways to do this, the easiest being via a low loss header.
A low loss header works on the same principals as a neutralizer on an open vented system.
It is a simple method to connect two appliances at a neutral point in order that
there is no hydraulic interaction between them. This means that the pumped circuit from a
second appliance will not induce a flow through the solid fuel boiler.

GB0113 Issue 4 17
Plumbing Advice
Timer control of a system with a woodburning boiler appliance
As wood burning appliances are not automated, and can therefore not be ignited, controlled
and extinguished by electrical control from a heating programmer it needs to be borne in
mind that any heat produced when the heating is not being called for must be able to be
dissipated in order to negate unnecessary triggering of the safety devices.
The use of a thermostat on the low loss header that runs the CH pump (and opens the
appropriate motorised valves) when there is heat to be distributed is therefore necessary.
There should be provision made on the heating system to ensure that enough radiators (or
under floor heating zones) are permanently open and NOT thermostatically controlled to
allow at least 20% of the wood boilers nominal output.
In installations that only use a wood boiler and therefore have no low loss header a high
limit stat should be fitted to the flow from the boiler, set to ensure that the open circuit can
dissipate at least 20% of the nominal boiler output
Thermal Stores 

An alternative way to link up different heat sources is through a Thermal Store; this can link
many appliances together and offers the best storage solution for any hot water produced.
Using a thermal store also allows for the option of linking in solar heating with your system
if required. Typical installation guides for link up systems can be found in the diagrams at
the back of this plumbing advvice section. 

Checks on Initial Firing 

Before connecting up the boiler, the installer must ensure that they thoroughly flush all of
the system’s pipes in order to remove any residue which could compromise the correct
operation of all system components (pumps, valves etc). It is also important to verify that
the chimney has sufficient draught, there are no blockages and that no other appliance
exhausts are inserted into the flue.
Inform the householder of the safety systems fitted to this stove. Explain the necessity to
maintain the water supply to the SCWS (cooling loop).
Filling up the System 

Once all connections are complete, the installer can proceed with the boiler connection.
Open all the vent pipes of the radiators, the boiler and the system. Gradually open the load
valve, ensuring that the air vent pipes are working correctly. Use the gauge to confirm the
system is pressurised. With closed tank systems, a pressure of 0.11 – 0.12 MPa (1.1 – 1.2
bar) must be reached. 






GB0113 Issue 4 18

Plumbing Maintenance

It is essential that your stove is well maintained and annually serviced by a qualified
professional to ensure it's continued efficient operation. Failure to maintain and
service your appliance as laid out in these instructions will result in the voiding of
your products warranty. Please see section “Maintenance” for information on annual
servicing of the stove and its internal components.
Plumbing Servicing
It is critical that all aspects of the SCWS (Safety Cold Water System) are annualy checked
to ensure correct operation. The main safety valve in the SCWS is the Watts STS20 valve,
which will open to allow mains cold water to enter the boilers quench coil. It is necessary to
clean the valve to remove impurities and deposits before initial firing and during servicing of
the installation. To activate the manual discharge and therefore the cleaning, press and
hold the red button on the valve, this will allow water to flow through the valve removing the
deposits. The manual test of this valve MUST be performed at the annual service.

Test Button

GB0113 Issue 4 19
Plumbing Diagrams

We have given some example plumbing layouts of how the appliance can be installed in
typical situations; these diagrams should be taken as a guide only and not as a definitive
instruction. It is the sole responsibility of the installer to design and carry out the installation
of the system to suit the property and clients needs.
The following diagrams are offered as a guide to assist in system design:

Diagram A
Pressurised boiler stove linked with combination gas boiler via a low loss header
Diagram B
Pressurised boiler stove linked with a non combi gas or oil boiler via a low loss header and
the addition of an open vented hot water cylinder.
Diagram C
Pressurised boiler stove linked with a non combi gas or oil boiler via a low loss header and
the addition of a pressurised hot water cylinder.
Diagram D
Pressurised stove linked with a non combi gas or oil boiler via a thermal store with solar for
summer time domestic hot water
Diagram E
Pressurised boiler stove linked with a non combi gas or oil boiler via a thermal store with
solar for domestic hot water and solar support for central heating system.
Diagram F
Stand alone pressurised boiler stove with an open vented hot water cylinder
Diagram G
Stand alone pressurised boiler stove with a pressurised hot water cylinder.
Diagram H
2 pipe open vented system

GB0113 Issue 4 20
Plumbing Diagrams
Diagram A – Pressurised boiler stove linked with combination gas boiler via a low loss header