hamworthy Arne Eco 1080 User guide

ARNE ECO &

ARNE ECO TURBO

Stainless Steel Flue Gas

Secondary Heat Exchanger

INSTALLATION, COMMISSIONING AND

SERVICINGINSTRUCTIONS

IMPORTANT NOTE

THESE INSTRUCTIONS MUST BE READ

AND UNDERSTOOD BEFORE INSTALLING,

COMMISSIONING, OPERATING OR

SERVICING EQUIPMENT

Customer After Sales Services

Telephone: [phone] E-mail: [e-mail] Fax: [phone]

Technical Enquiries

To supplement the detailed technical brochures, technical advice on the application and use of products in the Hamworthy

Heating range is available from our technical team in Poole and our accredited agents.

Site Assembly

Hamworthy offer a service of site assembly for many of our products where plant room access is restricted. Using our trained staff
we offer a higher quality of build and assurance of a boiler built and tested by the manufacturer.

Commissioning

Commissioning of equipment by our own engineers, accredited agents or specialist sub-contractors will ensure the equipment is

operating safely and efciently.

Service Contracts

Regular routine servicing of equipment by Hamworthy service engineers inspects the safety and integrity of the plant, reducing the

risk of failure and improving performance and efciency. Service contracts enable you to plan and budget more efciently.

Breakdown service, repair, replacement

Hamworthy provide a rapid response breakdown, repair or replacement service through head ofce at Poole and accredited

agents throughout the UK.

Spare Parts

We offer a comprehensive range of spare parts, providing replacement parts for both current and discontinued products. Delivery
options are available to suit you. Please refer to our website for more details.

ARNE ECO &

ARNE ECO TURBO

Stainless Steel Flue Gas

Economiser

Installation, Commissioning

and Servicing Instructions

NATURAL GAS

LPG PROPANE

CLASS D (35 sec fuel oil)

THEARNE ECO RANGE OF ECONOMISERS ARE INTENDED FOR USE WITH ENSBURY LT&

MELBURY HE BOILERS. THESE INSTRUCTIONS MUST BE READ IN CONJUNCTION WITH THE

BOILER INSTRUCTIONS! THEARNE ECO RANGE CAN ALSO BE USED WITH OTHER

MANUFACTURERS BOILERS,

I

2H

I

3P

THE GAS FIRED VARIANTS ARE FOR USE ON GROUP H NATURAL GAS
(2NDFAMILY) I2H& LPGPROPANE(3RD FAMILY) I

3P.

THE OIL FIRED VARIANTS ARE FOR USE ON CLASS D (35 sec FUEL OIL) or
CLASS C2 - KEROSENE(28 sec OIL) OR BLENDEDBIO- FUEL(RMEor FAME).
PLEASE ENSURE RELEVANT INFORMATION REQUIRED WITHIN THE
DOCUMENT IS FOUND RELATING TO THE SPECIFIC FUEL TO BE FIRED,
BEFORE OPERATINGIN CONJUNCTIONWITHTHE BOILER.

THIS PRODUCT COMPLIES WITHEUROPEAN DIRECTIVES -

Electro magnetic compatibility(89 / 336 / CEE)
Low voltage (73 / 23 / CEE)

PUBLICATION NO.500001194
ISSUE ‘A’

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HAMWORTHY HEATING LTD ARNE ECO & ECO TURBO 500001194/A

CONTENTS PAGE

1.0 INTRODUCTION.............................................................................................................4

2.0 SUPPLY AND DELIVERY................................................................................................5

3.0 GENERAL REQUIREMENTS...........................................................................................7

4.0 SITE LOCATION ANDPREPARATION...........................................................................11

5.0 INSTALLATION.............................................................................................................19

6.0 PRE-COMMISSIONING ................................................................................................20

7.0 CHECKS AFTER LIGHTING..........................................................................................20

8.0 CONTROLS AND OPERATION......................................................................................21

9.0 FAULT FINDING...........................................................................................................21

10.0 SERVICING..................................................................................................................21

11.0 RECOMMENDED SPARES...........................................................................................22

APPENDIX A PERFORMANCE DATA.................................................................................................23

APPENDIX B ELECTRICAL CONNECTIONS AND CONTROLS...........................................................25

APPENDIX C FLUE DATA .................................................................................................................26

APPENDIX D VENTILATION...............................................................................................................28

APPENDIX E WATER DATA...............................................................................................................28

HAMWORTHY HEATING LTD

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ARNE ECO & ECO TURBO 500001194/A

FIGURES PAGE

Figure 1.1 Arne Eco Economiser ......................................................................................................4

Figure 2.1 Package dimensions..........................................................................................................5

Figure 2.2 ArneEcoprinciples............................................................................................................6

Figure 2.3 Arne Eco Turbo principles................................................................................................6

Figure 3.1 Arne Eco dimensions.......................................................................................................7

Figure 3.2 Arne Eco dimensions.......................................................................................................7

Figure 3.3 ArneEcodimensions.........................................................................................................8

Figure 3.4 Arne Eco Turbo dimensions..............................................................................................8

Figure 3.5 Arne Eco Turbo dimensions..............................................................................................9

Figure 3.6 Arne Eco Turbo Installation..............................................................................................9

Figure 3.7 Arne Eco &Turbo clearances.........................................................................................10

Figure 4.2 Connection to the flue system.........................................................................................12

Figure 4.5 Arne Eco controlswiring.................................................................................................16

Figure 4.6 Ensbury& Melbury control panel wiring...............................................................................17

Figure 4.7 Arne Eco Turbo electrical connections.............................................................................18

Figure 4.8 Arne Eco Turbo control panel dimensions........................................................................18

Figure 5.5 Arne Eco Turbo control panel wiring diagram....................................................................19

Figure 11.1 ArneEco &Eco Turbo spares...........................................................................................22

Figure A1 Arne Eco Performancedata............................................................................................23

Figure A2 Arne Eco Turbo Performance data..................................................................................23

Figure B1 ArneEcoTurbo electrical data...........................................................................................25

Figure B2 Arne Eco Turbo electrical connections.............................................................................25

Figure C1 Arne Eco combustion circuit information..........................................................................27

Figure C2 Arne Eco combustion circuit information..........................................................................27

Figure C3 Arne Eco combustion circuit information..........................................................................27

Figure E 1 Arne Eco hydraulic circuit information..............................................................................28

Figure E 2 Arne Eco hydraulic circuit information..............................................................................29

Figure E 3 Arne Eco Turbo hydraulic circuit information....................................................................30

Figure E 4 ArneEcoinstallation schematic.........................................................................................31

Figure E 5 ArneEcoinstallation schematic.........................................................................................32

HAMWORTHY HEATING LTD

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ARNE ECO & ECO TURBO 500001194/A

1.0 INTRODUCTION

1.1 The Arne Eco and Arne Eco Turbo range of

flue gas economisersconsists of 16 models, for use
with boilers with outputs ranging from 95kW to

6470kW. Refer to Technical Data in Appendix A for
details on Natural gas, Propane and Oil firing.

For applications firing blended Bio Fuel (RME or
FAME), please refer to Hamworthy Heating Ltd for

confirmation and guidance on the fuel specification.

1.2 Arne Eco models utilise the burner to drive the
flue gases through the economiser and are suitable

for both oil and gas firing.

Refer to Appendix A for burner matchings
suitable forEnsbury LT& Melbury HE boilers.

For other manufacturers boilers, refer to the
manufacturer confirming the increased

resistance through the flue circuit such that a
suitable burner can be matched.

Arne Eco models must be close coupled to the
boiler and by using the latent heat present in the flue

gases, the efficiency can increase to over 107%
(net) at a correspondingly low return temperature.

Arne Eco Turbo models are fitted with a fan in the
flue gas circuit and are only suitable for gas firing.

Accordingly the Arne Eco Turbo can be located in
anypositionin the flue system - refer to section3

All Arne Eco models are manufactured from
stainless steel tubesand headersfitted with flanged

flow and return connections. The flue gas circuit is
provided with two access doors for maintenance

purposes

IMPORTANT

The Arne Eco range requires specific attention to
the system design so as to achieve the increased

efficiency performance and to maintain the minimum
flow requirements through the economiser - refer to

Appendix E forspecific information.

A differential pressure switch is supplied loose to
ensure minimum flow is achieved. This must be

fitted across the pump.
A limit thermostat and sensor pocket is supplied

loose to protect from excessive water temperatures

- refer to Appendix E for additional information
A dedicated circulating pump (not HHL supply) is

required to deliver the minimum flow requirements
for the economiser circuit.

1.3 All Arne Eco models are factory hydraulically
tested ensuring suitabilityfor use on systems with a

maximum working pressures of 6bar.

1.4 Arne Eco models are supplied assembled ready
for installation on-site and are provided with two

lifting eyes attached to the frame. In addition, the
unit can be moved about on site using a pallet truck

to lift by the frame.
The standard unit is supplied with the flue entry as

detailed in figure 1.1.
Adjustable feet are supplied providing 60mm of

adjustment to enable accurate alignment of the Arne
Eco to the boiler - Refer to Figures 3.1 & 3.2

A version is available (SF) with side flue exit from
the bottom of the economiser - Refer to Figures 3.1

& 3.2

1.5 Arne Eco models provide efficiency
performance gains of 6 - 18% depending upon the

return water temperature. Refer to Appendix A for
performance data

Figure 1.1 - Arne Ecoeconomiser

HAMWORTHY HEATING LTD

1.6 The heat exchanger is mounted within a steel
frame, to which the casing panelsprovide accessfor

cleaning. The heat exchanger assembly is provided
with insulation to minimise stand by losses.

The flow / return and water drain connections are
located at the side of the unit. Refer to Section 3 for

details.
The heat exchanger is housed in a powder coated

sheet steel casing and isprovided with levelling feet.
Arne Eco Turbo models are supplied with an

ancillary control panel to manage the operation of
the exhaust fan in conjunction with the water flow

switch.

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ARNE ECO & ECO TURBO 500001194/A

2.0 SUPPLY AND DELIVERY

2.1 The Arne Eco unit is supplied palletised.
Remove all packing material and inspect the equipment to ensure that all parts are present and undamaged.

If in any doubt, DO NOT USETHE EQUIPMENT. , contact Hamworthy Heating Ltd.
All packaging materials are to be disposed of appropriately. Prior to installation, remove the wooden blocks from

the base, used for transport purposes.

Warranty

Full warranty assi stance will be covered when the appliance is commissioned by Hamworthy Heating Ltd, see
Terms& Conditionsfor full details.

Hamworthy Heating Ltd will not accept any liability resulting from damage due to tampering, improper
use, handling, installation errors, operation and maintenance. It is important to check for damage upon

receipt of product, which if found must be notified to Hamworthy Heating Ltd immediately.

Tel - 0845 450 2866

Delivery Verification

When taking delivery please ensure that you have received the correct number of parts to fulfil your order. The
Arne Eco and ancillaryitems are shipped on onepallet.

If any item is missing please contact our after sales service team. Please provide details of your order such as
order number and contract number as well asa detailed description of the missing item.

Figure 2.1 - Packaged Dimensions

Model H mm W mm L mm Weight (kg)

Arne Eco 130 1120 540 820 135
Arne Eco 200 1200 540 1020 160
Arne Eco 300 1300 540 1300 190
Arne Eco 465 1560 540 1040 205
Arne Eco 710 1630 540 1360 250

Arne Eco 1080 1770 650 1480 335
Arne Eco 1430 1720 710 1630 335
Arne Eco 1870 1910 770 1860 510
Arne Eco 2440 2260 870 2180 660
Arne Eco 3230 2600 980 2350 825

Arne Eco 4260

(2 packages)

Arne Eco 5630

(2 packages)

1800
1150

1870
1185

1200

990

2530
1330

2500
2200

1330
2335

1015

1250

Arne Eco Turbo 400
Arne Eco Turbo 620

Arne Eco Turbo 940

Arne Eco Turbo 1430

HAMWORTHY HEATING LTD

700 205 1300 205
750 225 1040 225

800 280 1360 280
900 380 1480 380

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ARNE ECO & ECO TURBO 500001194/A

Flue inlet

Figure 2.2 - Arne Eco

St/steel plain tubes

St/steel chamber

HAMWORTHY HEATING LTD

To boiler

Inspection door

Heating system return

To chimney

Figure 2.3 - Arne Eco Turbo

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ARNE ECO & ECO TURBO 500001194/A

3.0 SIZEANDSPACE REQUIREMENTS

3.1 The Arne Eco range has been designed to utilise available space, therefore it is important that the plant room has
sufficient ceilingheighttoallowforinstallationand connection to theflue system allowing for sufficientaccessat the rear of
theboilerandeconomiser forpipeworkconnectionsandmaintenance requirements-See Figure 3.3

Figure 3.1 - Arne Eco Dimensions (models 130 - 1430)

1- Water flow, 2 - Water return, 3 - Relief valve, 4 - Drain valve, 5 - Condense drain

Figure 3.2 - Arne Eco Dimensions (models 1870 - 5630)

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ARNE ECO & ECO TURBO 500001194/A

Figure 3.3 - Arne Eco Dimensions - refer to figures 3.1 & 3.2

Arne Eco Model

A, width
B, height
C, depth
D

E, inlet flue Ø
F
G, outlet flue Ø
H

I
J
K
L

M*
N*
O
P

Q
Flow / return- (1 & 2)

Relief valve - (3)
Drain Valve - (4)

Condense drain - (5)

mm
mm

mm
mm

mm
mm
mm
mm

mm
mm
mm
mm

mm
mm
mm
mm

mm

DN
DN

DN

mm

130 200 300 465 710 1080 1430 1870 2440 3230 4260 5630

770 965 1245 989 1310 1427 1577 1795 2080 2290 2500 2530
995 1080 1175 1400 1505 1650 1850 1790 2140 2370 2570 2740

538 538 538 538 538 650 706 712 820 931 1043 1267
840 900 970 1170 1250 1345 1345 1450 1695 1875 2025 2145

200 250 300 350 400 500 500 550 650 750 850 950
215 250 270 300 330 350 350 415 535 615 690 705
200 200 250 300 350 400 400 450 550 650 700 800
413 448 493 567 622 680 680 784 945 1075 1175 1245

224 224 224 306 306 280 280 252 279 279 279 279
448 448 448 448 448 560 616 672 728 840 952 1176
621 816 1096 840 1161 1278 1428 1602 1824 2034 2244 2274
108 123 138 143 146 143 143 162 228 220 245 245

203 228 259 292 340 343 337 382 506 553 611 682
180 180 200 250 250 350 350 400 500 600 700 800

- - - - - - - 205 340 374 424 648

70 70 70 70 70 70 70 80 120 120 120 120

119 119 119 119 119 119 119 163 226 226 226 226

65 65 65 100 100 125 125 150 200 200 200 200

½’’ ½’’ ½’’ ½’’ ½’’ ½’’ ½’’ 1’’ 1’’ 1’’
½’’ ½’’ ½’’ ½’’ ½’’ ½’’ ½’’ ½’’ ½’’ ½’’ ½’’ ½’’

32 32 32 32 32 32 32 32 63 63 63 63

1’’1/4 1’’1/4

* Dimensions M and N are valid only for the option ‘side flue exit’.

Figure 3.4 - Arne Eco Turbo Dimensions

HAMWORTHY HEATING LTD

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ARNE ECO & ECO TURBO 500001194/A

Arne Eco Turbo Model 400 620 940 1430

A - width
B - height

C - depth
D
E - inlet flue Ø

F
G - outlet flue Ø
H

I
J

K
L
M*

N*
P

Q
U

V
Flow / return- (1 & 2)

Relief valve - (3)
Drain Valve - (4)
Condense drain - (5)

1245 989 1310 1427

mm

1245 1540 1675 1810

mm

538 538 538 650

mm

1025 1250 1355 1450

mm

250 350 400 450

mm

270 300 330 350

mm

250 300 350 400

mm

493 567 622 680

mm

224 306 306 280

mm

448 448 448 560

mm

1096 840 1161 1278

mm

138 143 146 143

mm

259 292 340 343

mm

200 250 250 350

mm
mm

mm
mm

mm

DN
DN
DN

mm

70 70 70 70

119 119 119 119
397 429 493 544

35 50 50 65

65 100 100 125
½’’ ½’’ ½’’ ½’’
½’’ ½’’ ½’’ ½’’

32 32 32 32

Figure 3.5 - Arne Eco Turbo Dimensions - refer to Figure 3.4

* Dimensions M and N are valid only for the op­tion ‘side flue exit’.

Figure 3.6 - Arne Eco Turbo Installation

HAMWORTHY HEATING LTD

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ARNE ECO & ECO TURBO 500001194/A

600





600



600

Figure 3.7 - Arne Eco & Arne Eco Turbo Clearances

Clearances

It is essential to provide sufficient clearance to allow access when working on the boiler and Arne Eco unit ­refer to figure 3.6.

Sufficient distance must be provided to enable the fitting of a flue adapter, whichmust be the same size asthe
boiler flue connection.

Height adjustment

In fitting the Arne Eco behind the boiler, it is advisable to use the adjustable feet for fine adjustments. Do
not extend the adjustable feet above the limit defined in figures 3.1, 3.2 & 3.4.

HAMWORTHY HEATING LTD

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ARNE ECO & ECO TURBO 500001194/A

4.0 SITELOCATIONANDPREPARATION

4.1 Site Location.

 The floor or plinth for the boiler(s) and Arne Eco, must be both flat and level to ensure

correctalignment of fittingsand connections.

 The floor or plinth must be sufficientlystrong to support theweight of the boiler(s) and

economiser (whenfull ofwater)and pipework.

 The floor or plinthmust be fireproof inaccordancewith BS 6644.
 The plantroom must have sufficient space for installation of boilers, economisers,

pipework, pumps, controls, flues, ventilation, access and servicingand other items of
plant.

 Sufficient space must be provided around the equipment to allow for access to

valves and flue and for installation, servicingand replacement, of components.

4.2 Flueing

 Flue termination, routing and construction must comply with the requirements of the

Clean Air Act 1956, BS 6644, BS5440 andIGE/UP/10 where applicable.

 All Arne Eco models are suitable for open flue (type B

) installation, with the boiler(s)

23

drawingcombustionairfrom the plantroom.

 Due to the low flue gas temperature onstart-upand in normal running(dependent upon

return temperature), condensation will occur in the flue leaving the Arne Eco. Flue
materialsmust be non-corrosiveand utilise fullysealing joints.

 it is recommended that the flue system shall be adapted to its design diameter as

soonas possible, after leaving the Arne Eco.

 Flue systems must be self supporting, contain access for cleaning and contain a

maintenance joint near the boiler and economiser outlets to allow for routine
cleaning.

 Existing chimneys should be thoroughly swept before use and any register plates,

dampers, or restrictions removed. Existing chimneys must be lined with a suitable
liner.

 Chimneys should be lined with a non-porous acid-resistant material in accordance

with BS.5854, e.g. a flexible flue liner or similar British Gas Approved material. The
internal diameter of the liner must not be less than the recommended flue size and
the number of joints should be kept to a minimum.

 It is recommended that a draught stabiliser is fitted to the flue systemwhere the suction

is likely to exceed 0.3mbar. The flue system should be designed to maintain
atmospheric pressure or a slight suctionat the boiler flue connection at alltimes (0.1 -

0.3mbar).

 Combustible materials in the vicinity of the boilerand flueshall not exceed65 °C during

operation. The flue shall not be closer than 50mm to anycombustible material,except
where it passes throughsuch material witha non-combustible sleeve when the air gap
may not be lessthan25mm.

 When designing the flue system, care must be taken to ensure that any condensate

which may form within the system, can be safely drained to a suitable waste point
and, that the flue material used is resistant to the corrosive effects of that
condensate.

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HAMWORTHY HEATING LTD

ARNE ECO & ECO TURBO 500001194/A

Figure 4.2 - Connection to the flue system

HAMWORTHY HEATING LTD

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ARNE ECO & ECO TURBO 500001194/A

4.3 Water Supply
 The Arne Eco is suitable for operating on open vented or sealed (pressurised)

heatingsystems.

 A dedicated circulating pump (not HHLsupply) is required to ensure minimum flow

rates are achieved through the economiser - refer to Appendix E for flow rates and
duty.

 A differential pressure switch is provided to prove that minimum water flow rates

are achieved through the economiser. This MUST be connected across the pump
flow andreturn connections.

 Pressurised system to comply with BS 7074. The flow connection is fitted with a

connection for the use of a suitably sized safety valve - refer to BS6644.

 Feed Water Quality- The condition of the feed water quality must be controlled:

Hardness ....................................................................................... - <100mg CaCO3/l.

pH ...................................................................................... 8.3 - 9.5

Phosphates (PO4) ......................................................................................- <30 mg/l

Chlorides (CI) .......................................................................................- <50 mg/l

Oxygen (O2) ....................................................................................... - <0.1 mg/l

 It is strongly recommended that the system pipework is flushed at least twice

before adding water treatment andbefore installing the boiler and economiser.

 In hard water areas (>100mg CaCO3/litre) precautions such as water treatment are

strongly recommendedto prevent the build up of sludge and scale.

 Leaks in the system pipework must be repaired to prevent dilution of water

treatment.

 Maximum workingwater pressure is 6bar.
 Minimum water pressure 0.5 bar

 Care must be taken to ensure that oxygen does not enter the system via the open

feed tank, or system materials whichallow the transmissionof oxygen into the
system.

If this cannot be prevented, additional measures are necessary in the form of
correctly used oxygen binding agents or chemicals.
If it is not possible, consideration must be givenfor separation of the boiler from
the system using for example plate heat exchangers.

 Acoarse filter and dirt separator in the return to both boiler(s) andeconomiser

MUST be fitted. The use of an automatic air vent is recommended.

 Specific attention must be made to the system design so as to achieve the

increased efficiency performance and to maintainthe minimum flow requirements
through the economiser - refer to Appendix E for specific information.

 The pump and economiser should be fitted with suitable isolating valves to allow

maintenance and replacement, should it be necessary.

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HAMWORTHY HEATING LTD

ARNE ECO & ECO TURBO 500001194/A

4.4 General Requirements

 Related Documents - Gas Safety (Installation and Use) Regulations 1994 – (As

amended).It is the law that all gas appliances are installed by competent
persons, in accordance with the above regulations. Failure to do so, could lead to

prosecution. It is in your own interest, and that of safety,to comply with the law.
The installation of the boiler MUST be in accordance with the relevant requirements of
the Gas Safety Regulations, Building Regulations, I.E.E. Regulations and the bylaws of
the localwater undertaking.
The installation should also be in accordance with any relevant requirements of the

local gas regionand local authority andthe relevant recommendations of the following
documents :-

 BS5410 - Code of practice for oil firing. Part 2: Installations of 44 kW and above

capacityfor space heating, hot water and steam supply purposes.

 BS.6644 - Specification for installation of gas fired hot water boilers of rated inputs

60kW - 2MW.

 BS6700 Design, installation, testingand maintenance of services supplying water

for domestic use.

 BS6891 Installation of low pressure gas pipe work of up to 35mm (R1 ¼) in

domestic premises.

 BS6880 Part 1, 2 & 3 Code of practice for low temperature hotwater heating

systems of output greater than 45kW.

 BS7074 Application, selectionand installation of expansion vessels and ancillary

equipment for sealed water systems. Part 2 Code of practice for low andmedium
temperature hot water systems.

 BS7671 Requirements for electrical installations. IEEWiring Regulations.

Seventeenth edition.

 BSEN 806-2 Specification for installations inside buildings conveying water for

human consumption. Design.

 BSEN 12828 Heating systems in buildings, Designfor water-based heating

systems.

 I. Gas E. Publications

IGE/UP/1 Soundness testing and purging of industrial and commercial gas
installations.
IGE/UP/1A Soundness testingand direct purging of small low pressure industrial

and commercial natural gas installations.
IGE/UP/2 Gas installation pipe work, boosters andcompressors inindustrial and
commercial premises.
IGE/UP/10 Installation of gas appliances in industrial andcommercial premises,
Part 1 flued appliances.

 HealthandSafetyExecutive

Guidance note PM5 - Automatically controlledsteamand hotwater boilers.

 CIBSEPublications

CIBSE Guide B Heating, ventilating, air conditioning and refrigeration.
CIBSE Guide H Building Control Systems
CIBSE Guide Energy Efficiency in Buildings

CIBSE Commissioning Code B: 2002

 Dept Environment, Scottish Development Dept & Welsh Office

Third edition of the 1956 Clean Air Act Memorandum

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HAMWORTHY HEATING LTD

ARNE ECO & ECO TURBO 500001194/A

4.5 Electrical Supply- Arne Eco Turbo Models
WARNING! THIS APPLIANCE MUST BE EARTHED IN ACCORDANCE WITH IEE

REGULATIONS

 Electrical supplies 415Volt, 50Hz– 3 phase, must not be switched by a time clock.
 External fuses should be rated for 6.3 amps

 Wiringmust be completed in heat resistant cable size 1.0mm² csa.
 Each economiser MUST have individual means of isolation.

 Electrical isolators must facilitate complete electrical isolation.

 Electrical isolators must have contact separation of minimum 3mm in all poles.
 Electrical isolators must be installed inreadily accessible locations.

 Electrical supplies should only serve the economiser.
 Wiring of ancillary circuits must be connected to the control panel via the knock-

outs in the bottom of the panel, using suitable cable glands.

 The pump must be controlled by the BMS panel, providing suitable operation

whilst the burner is firing and pump overrun, when the burner switches off.

 The flow switch and manual reset limit thermostat set at 100°C (supplied by HHL)

must be fitted in accordance with Figures 4.5 & 4.7.

 Where an external alarm is required, the Arne Eco Turbo control panel has 1 volt

free contact for remote signalling.

ADDITIONAL INFORMATION REGARDING ELECTRICAL SUPPLIES IS GIVEN IN BS
EN60335, Part 1.

NOTE: The appliance must be isolated from the electrical supply if electric arc welding
is carried out on connecting pipework.

FOR TYPICALSCHEMATIC DETAILS SEE FIGURE 4.5 & 4.7

FOR DETAILEDWIRING INSTRUCTIONS SEE FIGURE5.5

HAMWORTHY HEATING LTD

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ARNE ECO & ECO TURBO 500001194/A

ArneEcoeconomiser

or

Melbury Csecondary

heat exchanger

Emergency

On/Off

Button

Limit

Thermostat

230v-1Ph

50Hz

Supply

F low

Switch

Remote

On/Off

safety cont rols

BURNERLOW
FIRESIGNAL

BURNERHIGH
FIRE SIGNAL

OVERHEATLOCKOUT
FAULT

BURNER LOCKOUT
FAULT

EXTERNALINTERLOCK
FAULT

L N

1 2 345 6 7 LLNNT1T1T2T2S3S3B4B4B5

T6

T7

T8

80 81 82 8384 85 86 87 88 899091929394

CCCCC NCNCNCNCNC NONONONONO

BOILER CONTROL PANEL
TERMINAL RAIL

7PINB URNER
CONNECTION

4PINBURN ER
CONNECTION

B5L2

T6L3

Burnerconnections made
using flyingleads/sockets
suppliedwith controlpanel

T7N

T8L1

BURNER CONTROL PANEL
TERMINAL RAIL

400v-3Ph
50Hz Supply

3 Ph burners only

Figure 4.5 - Arne Eco controls wiring to Ensbury LT & Melbury HE boiler control panel
Note: the Arne Ecosafety controls (flow switch and limit thermostat) must be connected in

series with the safety interlock circuit - terminals 3 & 4 on Ensbury LT& Melbury HE boilers

HAMWORTHY HEATING LTD

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ARNE ECO & ECO TURBO 500001194/A

EXTERNAL

INTERLOCK

LOW FIRE

HIGH FIRE

RELAY

FAULT

BURNER

LOCKOUT

BURNER

HIGHFIRE

BURNER

OVERHEAT

LOCKOUT

LOWFIRE

94

Remove linkif facility

METER

HOURSRUN

METER

HOUR SR UN

S1 - Burner ON/OFF switch

S2 - Safetycut ou t test button

F1 - Fuse 6.3A T

T1 - Control Thermostat

T2 - Limit Th ermostat

T3 - High / Low Thermostat

H2- Overheat lamp

123

is used.

H3- Burner lockout lamp

H4- External fault lamp

1
234

56

928983 86
91

90

85 8882

VOLT FREE CONTACTS

84 8781

T1

1

S2

14

12

11 1a

T2 T3

H2 H3

80 93

T8
T7
T6

4 PIN

B5

T8
T7

T6

PLUG

MALE

B5

T8

T7
T6
B5

B4
S3

T2
T1

7 PIN

B4
S3
T2
T1

PL UG

MALE

NN
LL

N
L

B4
S3
T2
T1

N

BURNER CONNECTIO NS

BURNER TERMINAL RAIL

L

N

REMOTE

ON/OFF

L3

L2L1

5

EXTERNAL

SAFETY

INTERLOCK

2 7

S1

F1 H4

1 643

EMERGENCY

OFFBUTTON

PE

Figure 4.6 - Ensbury LT & Melbury HE boiler control panel wiring

17

HAMWORTHY HEATING LTD

ARNE ECO & ECO TURBO 500001194/A

415v - 3PH~50Hz

TO BURNER,

230v - 1PH~50Hz

TO CONTROL PANEL

WHERE APPLICABLE

Figure 4.7 - Arne Eco Turbo Electrical connections

Figure 4.8 - Arne Eco Turbo Control Panel dimensions

18

HAMWORTHY HEATING LTD

ARNE ECO & ECO TURBO 500001194/A

5.0 INSTALLATION - all models
Important; - ensure that a suitable flue disconnection

fitting is located between the boiler and Arne Eco - see
figure 4.2

Site equipment and accessories MUST NOT be
secured to the casing panels.

Arne Eco Turbo models - the control panel shouldbe
wall mounted or on a stantion close to the economiser.

Ancillary equipment wiring MUST be connected to the
control panel using suitable cable glands at the bottom

of the panel.
The separately supplied Limit Thermostat and

differential pressure switch providing over temperature
and water flow protection MUST be fitted into the

hydraulic circuit as shown in Appendix E and
connected to the electrical controls asshown in figures

4.5, 4.7 & 5.5.
A suitably sized safety valve MUST be fitted to the flow

connection of the Arne.

Figure 5.5 – Arne Eco Turbo Control Panel Wiring Diagram

A suitably sized circulating pumpmust be fitted ­refer to Appendix E for schematic and sizing.

Before installation, select the appropriate direction
for the water headers (left or right) and flue exit

(centre front or rear), orleft or right in the case of an
SF unit.

The position of the lower and upper exhaust
ducts can be reversed to give flexibility on the
installation.

To access the upper exhaust duct, remove the
decorative cover to expose the M8 screws
securing the duct.The lower ductis also secured
in the same manner.
Caution: When refitting the ducts, ensure the seal is

correctly positioned and check that it is in good
condition.

5.1 Installation
a) Locate the Arne Eco behind the boilerensuring

that it is level and lined up with the boiler flue

HAMWORTHY HEATING LTD

19

ARNE ECO & ECO TURBO 500001194/A

makeup piece. Test fit the flue make up piece before
connecting the Arne Eco to the system pipe work.

b) Connect the system pipe wok - refer to Appendix E
for installation schematics. Fit a suitable drain to the

return connection and an appropriately sized safety
valve to the flow connection using the tappings

provided.—see figures 3.3 & 3.5.
Note: ensure that the discharge from the safety valve

istaken to a safe place.
Fit the differential pressure switch acrossthe

circulating pump. For setting of the switch to ensure
that minimum flow rates are achieved refer to

Appendix E.
The design of the logic is so that should a failure to

6.0 PRE-COMMISSIONING

The following pre-commissioning check must be carried outbefore the boiler is commissioned.

6.1 Pipework, Valves andPump

Ensure that;

detect flowoccur,the burner will be held off.
c) Mount the control panel in a suitablelocation -

refer to figures 4.6 & 4.7 and make the electrical
connections.

d) Fit a suitable 32mm condense drainage system to
the Arne Eco and the flue system ensuring that the

dischargeistaken to a suitable drain using
appropriate materials. Should a siphon be used,

accessmust be provided forinspection and cleaning.
e) A manually resettable thermostat limiting the

temperature to 95°C is supplied. Thisthermostat
must be connected across terminals 6 & 7 and in

series with any other controls in that circuit - refer to
figure 5.5.

 Pipeworkand valve arrangementisinstalled to Hamworthy Heating recommendations.
 Circulating system isfull of water, vented and pressurised appropriately.
 Circulation pump is fitted, working and interlocked.

 Pipeworkconnections to economiser are fitted correctly.
 All necessary isolation valves are open.
 Heat load is available.

 Safety valves are correctly rated and located.

6.2 Flue

Ensure that;

 Flue system is correctly designed andinstalled to suit the application.
 Flue passagesto chimney are clear.

 Condense drains are connected appropriately and discharges taken to a drain

6.3 Electrical

Ensure that;

 Electrical connections are correct and isolatable.
 External controls are operational.

6.4 Ventilation

 Ensure that there is adequate ventilation into the plant room - refer to boilerinstructions.

7.0 CHECKS AFTER LIGHTING

 Check the operation of the system.
 Check the integrity of the flue connections
 Condense drains are connected appropriately and discharges taken to a drain
 Check the temperature of the flue gases leaving the Arne Eco and ensure that the entry flue gas

temperature is lessthan 280°C

 Check the operation of the boiler in accordance with the relevant instructions.

20

HAMWORTHY HEATING LTD

ARNE ECO & ECO TURBO 500001194/A

8.0 CONTROLS AND OPERATION

10.1 Initial Inspection

8.1 Temperatures

It is essential that minimum flow rates are achieved so
as to extract the heat from the flue gases, thus

delivering the efficiencygains.
Typical flue gas temperatures leaving the economiser

aredetailedinAppendixA.
Withmixed temperature circuits, it isimportant that high

temperature circuits return directly to the mixed flow
header connected to the boiler primary heat

exchangers. Accordingly non return valves should be
used in the system design -refer toAppendixE.

8.2 Water Flow Controls

The Arne Eco has minimum flow requirements and
accordingly a dedicated circulation pump is required to

deliver the required flow in the low temperature circuit ­refer toAppendix A for pump duties.

Correctly sized circulating pumps and valves must be
used in the system to provide the necessary

performance.
In the event of inadequate or no flow, the water flow

switch will hold off the boilerfiringuntil the minimumflow
requirement is satisfied.

8.3 Frost Protection

a. To gain access to the heat exchanger flue ways,

swivel back the two end panels which are latched by
magnets. This will expose M8 screws securing the

access panels. Repeat the operation for the
opposite side.

b. Withdraw the access panels using the handles
provided to give access to the heat exchanger
tubes. Clean the heat exchanger tubes and flue
ways with the brush provided.

c. Arne Eco Turbo models only - remove the
decorative cover from the upper exhaust duct,

loosen the M8 screws securing the fan motor
assembly to the upper chamber; then remove the

assembly taking particular care of the seal.
Should the seal be compromised, replace.

d. In replacing any components, inspect and renew
gaskets and seals where appropriate. Replace and
secure the access panel(s), remembering to close

the end panels and secure on the magnet latches.
This will prevent any undue heat losses

Consideration should be given to fitting a frost
thermostat setat approximately4°C.

8.4 Unvented Systems

Refer to the boiler instructions for guidance on un­vented systems.

9.0 FAULT FINDING

9.1 Fault Finding

Fault finding on the burner control system is detailed
in the burner manufacturers instructions. If the boiler

still cannot be operated satisfactorily after following
these instructions, consult Hamworthy Heating for

assistance.

10.0 SERVICING

A qualified engineer registered for working on non
domesticgasoroil appliancesshould check andensure

that the flue, its supportand terminal, the ventilation to
the boilerhouse, safety valve, drain, water filter if fitted,

pressure gauge, etc.; are in a serviceable and working
condition and still comply with the relevant standards

and codesofpractice - see Section3.1
The boiler should be serviced at regular intervals,

not exceeding SIX months for oil fired boilers, or
TWELVEmonths for gas fired boilers.

When carrying out boiler servicing always consider
both your own safety and that of others. The use of
protective equipment (e.g. eye protection, face
mask, protective gloves, etc.) is recommended

where necessary.

HAMWORTHY HEATING LTD

ARNE ECO & ECO TURBO 500001194/A

21

11.0 SPARES

..

DESCRIPTION PARTNO.

Motor seal Arne EcoTurbo 400........................................................573410259

Motor seal Arne EcoTurbo 620........................................................573410261

Motor seal Arne EcoTurbo 940 & 1430.............................................573410262

Door seal Arne Eco 130...................................................................573410263

Door seal Arne Eco 200...................................................................573410264

Door seal Arne Eco 300 & Turbo 400...............................................573410265

Door seal Arne Eco 465 & Turbo 620................................................573410266

Door seal Arne Eco 710 & Turbo940................................................573410267

Door seal Arne Eco 1080 & Turbo 1430............................................573410268

Door seal Arne Eco 1430.................................................................573410269

Door seal Arne Eco 1870.................................................................573410270

Door seal Arne Eco 2440.................................................................573410271

Door seal Arne Eco 3230.................................................................573410272

Door seal Arne Eco 4260.................................................................573410273

Door seal Arne Eco 5630.................................................................573410274

Brush Arne Eco 130 / 1870 & all Turbo.............................................573410275

Brush Arne Eco 2440 / 4250............................................................573410276

Brush Arne Eco 5630...........…………………………………...................573410277

Differential Pressure Flow Switch type A...……………………………….573410282
Differential Pressure Flow Switch type B………………………………… 573410283

Differential Pressure Flow Switch type C………………………………… 573410284

LimitThermostat..................…………………………………................... 573410285

Figure 11 - Arne Eco & Eco Turbo spares

HAMWORTHY HEATING LTD

22

ARNE ECO & ECO TURBO 500001194/A

APPENDIX A - PERFORMANCE DATA

Arne Eco - model

GENERAL DATA
INPUT

Minimum power input kW
Maximumpower input kW

WATER

Minimum flowrate m3/h
Pressuire drop@ minimum mbar
Maximumflowrate m3/h

Pressuire drop@ maximum mbar

A

Differential pressure switch
selection

Example - refer to Appendicesfor data

Based uponflue gas inlettemperature 220°C, excess air @20% and full load
Boiler power input KW
Fluegas resistance mbar

Water flowrate m3/h
Hydraulic resistance mbar

B
C

130 200 300 465 710 1080 1430 1870 2440 3230 4260 5630

95

150 230 350 540 815 1240 1630 2150 2800 3700 4900

170 260 400 620 940 1430 1630 2150 2800 3700 4900 6470

3.0 4.0 6.0 8.0 12.0 19.0 25.0 33.0 42.0 56.0 74.0 97.0
12 13 17 14 20 30 40 55 72 90 125 140

7.0 11.0 17.0 26.0 39.0 60.0 80.0 104.0 136 180.0 237.0 313.0
30 50 120 110 220 270 400 530 720 900 1080 1150

A A A A A A A

B B B B B B B B B B

130 200 300 465 710 1080 1430 1870 2440 3230 4260 5630

0.3 0.3 0.3 1.7 1.7 1.7 1.7 1.7 1.7 1.8 1.8 1.8

6.51 10.0 15.0 20.0 30.0 45.0 52.0 59.0 66.0 79.0 93.0 120.0
25 50 100 75 140 160 170 175 180 182 187 187

C C C C C C C C

Figure A.1 – Performance and General Data Information Arne Eco
NOTE: depending upon the design criteria, the appropriate differential pressure switch must be selected

A - 15~60mbar
B - 40~200mbar

C - 150~1000mbar

Arne Eco Turbo - model

GENERAL DATA
INPUT - see note*

Rated power output kW 400
WATER

Minimum flowrate m3/h
Pressuire drop@ minimum mbar
Maximumflowrate m3/h
Pressuire drop@ maximum mbar

Differential pressure switchselection

Example - refer to Appendices for data

Water flowrate m3/h
Hydraulic resistance mbar

400 620 940 1430

620 940 1430

6.0 8.0 12.0 19.0
17 14 23 30

17.0 26.0 39.0 60.0
120 115 230 290

A
B
C

A A A A
B B

8.0 20.0 30.0 40.0
35 70 130 175

C C

Figure A.2 – Performance and General Data Information Arne Eco Turbo
Note * - the model chosen should have a power rating of NOT MORE THAN 4 times the minimum plant

firing capacity.

23

HAMWORTHY HEATING LTD

ARNE ECO & ECO TURBO 500001194/A

BURNER SELECTION - Ensbury LT & Melbury HE boilers

Referring to the increased flue gas circuit resistance, see figures C1, C2 & C3, caused by the economiser heat
exchanger, consideration must be given to the impact on the burnerperformance such that the firing rateisnot

adversely affected.

For other manufacturers boiler combinations with Arne Eco economisers, the additional resistance must
be added to the boiler combustion chamber resistance defined in the Boiler instructions - refer to boiler

manufacturer.

In the case ofEnsbury LT and Melbury HE boilers, the following models require revised burner applications to
ensure satisfactoryperformance.

Ensbury LT - model 370 510

Matched Riello burner RS/RL44 RS/RL50
Matched Riello burner for use with Arne Eco RS/RL50 RS/RL70

All other modelsof Ensbury LT & Melbury HE boilersare suitable for use with Arne Eco economisersusing the
burners detailed in the Boiler Instructions.

HAMWORTHY HEATING LTD

24

ARNE ECO & ECO TURBO 500001194/A

APPENDIX B - ELECTRICAL CONNECTIONS AND CONTROLS
B.1. Electrical Connections:

The following electrical connections are provided on each Arne Eco Turbo control panel.

 Supply: Live, Neutral and Earth. (415V - 3ph ~50Hz) See Section 4.5 fordetails.
 Fan Fault Alarm Signal Output - volt free
 Economiser Flow Switch

 Auxiliary Burner relay
 Safety Interlock link- to be fitted by Contractor
 Power Onlamp
 Fan Fault lamp

 EmergencyOn/Off Button

Note: All wiring and electrical connections must be completed by a competent person in accordance with current
IEE regulations.

Power supply required is 415V 50 Hz three phase, 4 wire. An isolatorcorrectlyfused should be sited close to the boiler.
Referto theburnerinstructions.

Note: The Auxiliary burner relay should be connected across terminals 3 & 4 on the boiler control panel.
Should there be any otherexternal safety interlocks, these must be wired in series.

Warning: On no account must the route of the cables allow them to contact any unprotected or un-insulated sur­face. All cables between economiser, boiler and controlsmust be routed in accordance with IEE regulations.

Arne Eco Turbo - model

ELECTRICAL DATA

Motor power
Motor speed rpm

Fuseload A

kW

Figure B.1 -Electrical data Arne Eco Turbo

400 620 940 1430

0.25 0.75 1.5 3

1500 1500 1500 1500

3.5 4.5 5 5

Figure B.2 -Electrical connections Arne Eco Turbo

HAMWORTHY HEATING LTD

ARNE ECO & ECO TURBO 500001194/A

25

APPENDIX C - FLUE DATA

C 1 General Requirements

Detailed recommendations forflue systems aregivenin
BS 6644, IGE/UP/10, "Fluesfor Commercial and Indus-

trial Gas-Fired Boilersand Air Heaters."
The following notes are intended to give general guid-

ance only.
C.1.1 The flue passageswithin the Arne Eco econo-

miser range operate under pressurised conditions
and in order to eliminate any additional resistance, it

is recommended that the flue system shall be
adapted toits design diameteras soon aspossible.

C.1.2 The Arne Eco models are designed for direct
connection into the flue system of a single or modu-

lar boiler system and must be sized for the maxi­mum firing rate of the boiler(s).

The Arne Eco Turbo models should be installed in
parallel to the flue system

C.1.3 The boiler should be connected to a single
flue system in the case of a single boiler, or a

common flue header in the case of a multiple boiler
installation. Flue systems must be self supporting,

contain access for cleaning and contain a
maintenance joint near the boiler outlet to allow for

removal of the flue box during servicing.
Consult Hamworthy Heating Technical Department

for help orassistance if in doubt.

C.2 Design Waste GasVolume andTemperature

It isrecommended that the volume and temperature
of the waste gases used for design of the flue

system are as shown in FiguresA1, A2 & A3

C.3 Materials

point at which it exits the building is fully
weatherproofed.

C.4 Suction

The flue system should bedesigned to maintain atmos­pheric pressure or a slight suction at the economiser

flueconnection atall times (0.1-0.3mbar).
It is recommended that a draught stabiliser is fitted to

the flue system where the suction is likely to exceed

0.3mbar.

C.5 Disconnection

Provisionsshould be made fordisconnectionof the flue
pipe for servicing. It is advisable that bends are fitted

with removable covers for inspection and cleaning as
appropriate. NOTE! The flue system must be self sup-

porting and not presenta riskto peoplein oraround the
building.

C.6 Flue Discharge

The flue system must ensure safe and efficient opera­tionof theboilerto whichitis attached, protect the com-

bustion process from wind effects and disperse the
products of combustionto theexternal air.

The fluemustterminateina freelyexposedposition and
be situated soas toprevent theproductsof combustion

entering anyopeningin a building. Consideration should
begivento thefittingof a fluedischargeterminal orgrille

to stoptheingressofbirds etc.
The flue system should be designed such that the

flue terminates at least 1 metre above the roof sur­face, or above the level of any nearby structure

which iswithin 2.5 metresof the flue.

Materials used for the flue systemmust bemechanically
robust, resistant to internal and external corrosion, non-

combustible and durable under the conditions to which
theyarelikely tobesubjected.

Consideration should be given to possible freezing of
condense water traps and pipework. This must be

avoidedatall times. Insulate condense pipesif freezing
temperaturesare likelyto be encountered.

Chimneys should be lined with a non-porous acid­resistant material in accordance with BS.5854, e.g.

a flexible flue liner or similar British Gas Approved
material. The internal diameter of the liner must not

be less than the recommended flue size and the
number of joints should be kept to a minimum.

Any joint between the flexible liner and the flue con­nection to the economiser should be made using a

purposemade connector. Existing chimneys should
be thoroughly swept before use and any register

plates, dampers, or restrictions removed.
If the boiler(s) is not connected to a chimney

system, but is connected directly to outside by a
standard stainless steel flue (either single or twin

wall) it is particularly important to ensure that the

HAMWORTHY HEATING LTD

ARNE ECO & ECO TURBO 500001194/A

C.7 Surface Temperatures

Combustible materials in the vicinity of the boiler and
flue shall not exceed 65°Cduring boiler operation. The

flue shall not be closer than 50mm to any combustible
material, except where it passes through suchmaterial

with a non-combustible sleeve when the air gap may
notbelessthan 25mm.

C.8 Flue System Location

The flue system must not be placed or fitted where
there isundue riskof accidental damage tothe flue pipe

or undue dangerto persons in the vicinity. NOTE! The
flue MUST be self supporting. Check that the flue and

chimney are clearfrom anyobstruction.

C.9 Condensate Discharge

When designing the flue system, care must be taken
to ensure that any condensate which may form

within the system, can be safely drained to a suit­able waste point and, that the flue material used is

resistant to the corrosive effectsof that condensate.

26

Figure C.1 – Arne Eco Combustion Circuit Information - (models 130 - 300)

Figure C.2 – Arne Eco Combustion Circuit Information - (models 465 - 1080)

Note: - the Arne Eco
combustion circuit

pressure loss is
additional to the

combustion circuit
pressure loss through

the boiler at the firing
rate.

Figure C.3 – Arne Eco Combustion Circuit Information - (models 1430 - 5630)

27

HAMWORTHY HEATING LTD

ARNE ECO & ECO TURBO 500001194/A

APPENDIX D - VENTILATION
Refer to the boiler Instruction forclarification of ventilation requirements

APPENDIX E - WATER DATA

Figure E.1 – Arne Eco Hydraulic Circuit Information - (models 130 - 1080)

E 1 Water circulationsystem

Recommendations for the water circulation system
are given in BS 6644 for gas fired boilers but the

same principals can be used for those using fuel oil.
The following notes are of particular importance:-

E1.1 In a combined central heating and hot water
system, the hot water storage vessel must be of the

indirect cylinder or calorifier type. The hot water stor­age vessel should be insulated preferably with not

less than 75mm (3 in) thick mineral fibre, or its ther­mal equivalent.

E1.2 Circulating pipework not forming part of the use­ful heating surface should be insulated to help pre-

vent heatlossand possible freezing, particularly
where pipes are run through roof spacesand venti-

HAMWORTHY HEATING LTD

ARNE ECO & ECO TURBO 500001194/A

lated cavities. Cisterns situated in areas, whichmay
be exposed to freezing conditions, should also be

insulated. Insulation
exposed to the weather should be rendered water-

proof.
E1.3 Flanged flow and return connections are pro-

vided for both economiser and boiler.
E1.4 Multiple boilers should be connected by flow

and return headers. Headers should be connected to
the system in a "reverse return" arrangement (the

water flow in each headeris in the same direction) to
ensure equal flow in each boiler.

E1.5 A coarse filter and dirt separatorMUST be fitted
in the return to both primary and secondary heat ex-

changers

28

Figure E.2 – Arne Eco Hydraulic Circuit Information - (models 1430 - 5630)

E.2 Pressure Relief Valve (Safety Valve)

The most important single safety device fitted to a
boiler is its safety valve and each boiler, or in the

case of a multiple installation, each bank of boilers,
must be fitted with a pressure relief valve to BSEN-

ISO 4126-1 and sized asshown in BS 6644.
Each boiler and economiser has a tapping on the

flow pipe forthe fitting of a safety valve to theboiler.
BS 6644 provides comprehensive information for

the selection and location of safety valves and
attention is drawn to the higher capacity

requirements of safety valves for pressurised hot

HAMWORTHY HEATING LTD

ARNE ECO & ECO TURBO 500001194/A

water systems.

E.3 OpenVent and Cold Feed Pipe

(See BS 6644 for furtherinformation.)
Every boileror group of boilersshould have an open

vent pipe and cold feed pipe installed between the
boiler and the first water isolating valve. The

minimum bore (mm) of these pipesis detailed in the
boilerinstruction manual.

The vent pipe must rise continually, must not be
valved except by a design which when closed for

maintenance the boiler is open to atmosphere. The
pipe shall be protected against freezing where this

might occur.

29

Figure E.3 – Arne Eco Turbo Hydraulic Circuit Information

E.4 Altitude Gauge (Water Pressure Gauge)

Every boiler or group of boilers should be provided
with a gauge complete with isolating valve.

E.5 Thermometer

A thermometer complete with pocket should be
fitted in the pipework to indicate water flow

temperature.

E.6 DrainValves

Each economiser should have a drain valve fitted
(not H.H.L. supply), to the appropriate connection

on the return pipe of the economiser.
The heating system in total should have drain

valvesas recommended by BS 6644 which permit
the draining of the whole system, including the

boiler and any hot water storage vessel.

E.7 Circulating Pump

One or more circulating pumps will be required to
circulate water around the boilers and heating

HAMWORTHY HEATING LTD

ARNE ECO & ECO TURBO 500001194/A

system. The pump should be sited to facilitate
servicing.

7.9 WatersidePressure Drop

The waterside hydraulic resistance (Pressure drop) is
shown in Figure E1.

30

Figure E.4 - Arne Eco Hydraulic schematic - dedicated Economiser foreach boiler

31

HAMWORTHY HEATING LTD

ARNE ECO & ECO TURBO 500001194/A

Figure E.5 - Arne Eco Hydraulic schematic - single Economiser for multiple boilers

32

HAMWORTHY HEATING LTD

ARNE ECO & ECO TURBO 500001194/A

HAMWORTHY HEATING LTD

33

ARNE ECO & ECO TURBO 500001194/A

USEFUL USER INFORMATION

INSTALLER SITE ADDRESS

BOILER TYPE BOILER SIZE(S) UNITNO(S). SERIAL NO(S). FLUE

HAMWORTHY HEATING LTD

34

ARNE ECO & ECO TURBO 500001194/A

Hamworthy Heating Accredited Agents

Southern Ireland (Sales & Service)

HEVAC Limited
Naas Road, Dublin 12, Ireland
tel: [phone] fax: [phone]
email: [e-mail]

Northern Ireland (Sales & Service)

HVAC Supplies Limited

Unit A6, Dargan Court, Dargan Crescent, Belfast BT3 9JP
tel: [phone]
email: [e-mail]

Scotland (Sales & Service)

McDowall Modular Services

2 Penson Road, Queenslie Industrial Estate, Glasgow, G33 4AG
tel: [phone] fax: [phone]
email:

[e-mail]

North East England (Service)

Allison Heating Products

12 Sunnyside Lane, Cleadon Village, Sunderland SR6 7XB

tel: [phone] fax: [phone]
email: [e-mail]

Hamworthy Heating Customer Service Centre

Sales

tel: [phone]
email: [e-mail]

Technical Enquiries

tel: [phone]
email: [e-mail]

Servicing

tel: [phone]
email: [e-mail]

Spares

tel: [phone]
email: [e-mail]

British engineering excellence from Hamworthy Heating;
the commercial heating and hot water specialists.

Customer Service Centre

Hamworthy Heating Limited,
Wessex House,
New Fields Business Park,
Stinsford Road,
Poole,
Dorset,

BH17 0NF

Telephone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.hamworthy-heating.com

Hamworthy reserves the right to make changes and improvements which may necessitate alteration to the specication without prior notice.