Oil Fired Working towards a cleaner future Oil Fired Storage Water Heaters

Add to my manuals
45 Pages

advertisement

Oil Fired Working towards a cleaner future Oil Fired Storage Water Heaters | Manualzz

October 2010

This manual must be kept with the appliance

Part No E524

Oil Fired

Installation Guide, Operation and Service Manual

Oil Fired Storage Water Heaters

MODELS OFS25, OFS29, OFS63, OFS90, OFS108, OFS163

Working towards a cleaner future

© Copyright Andrews Water Heaters 2007

Reproduction of any information in this publication by any method is not permitted unless prior written approval has been obtained from Andrews Water Heaters.

Andrews Storage Water Heaters have been designed and manufactured to comply with current International standards of safety. In the interests of the health and safety of personnel and the continued safe, reliable operation of the equipment, safe working practices must be employed at all times. The attention of U.K. users is drawn to their responsibilities under the Health and Safety Regulations 1993.

All installation and service on the Andrews Water Heater must be carried out by properly qualified personnel, and therefore no liability can be accepted for any damage or malfunction caused as a result of intervention by unauthorised personnel.

The Andrews Water Heaters policy is one of continuous product improvement, and therefore the information in this manual, whilst completely up to date at the time of publication, may be subject to revision without prior notice.

Further information and assistance can be obtained from:

Andrews Water Heaters

Wood Lane, Erdington, Birmingham B24 9QP

Tel: 0845 070 1055 Fax: 0845 070 1059

Sales: 0845 070 1056

Technical: 0845 070 1057

Service: 0845 070 1058

Email: [email protected]

www.andrewswaterheaters.co.uk

THE ANDREWS WATER HEATERS COVERED IN THIS MANUAL

ARE FOR USE WITH KEROSENE CLASS C2 (BS2869) OR GAS OIL CLASS D (BS2869)

CONTENTS

SECTION 1

SECTION 2

SECTION 3

SECTION 4

SECTION 5

SECTION 6

SECTION 7

SECTION 8

GENERAL AND SAFETY INFORMATION

General Information

British Standards

Health and Safety Regulations 1993

Legionellae in Water Heaters

TECHNICAL DATA

All Models

INSTALLATION

Introduction

Location

Burner Assembly

Flue Systems

Installation of Flue

Terminal Location

Common Flue Header

Air Supply and Ventilation

Water Quality and Treatment

Water Connections- Hydrojet System

Water Connections - Vented Systems

Water Connections - Unvented Systems

Electrical Supply

Fuel Supply

COMMISSIONING

Combustion Adjustment

Air Adjustment

Pump Adjustment

Instructing the Users

Users Safety Guide

OPERATION

SERVICING

Introduction

Pre-Service Operations

Burner Assembly

Flueway

Magnesium Anode(s)

Cleaning the Storage Vessel - All Models

FAULT FINDING

All Models

PARTS LISTS AND ILLUSTRATIONS

Heater Spares OFS25

Burner Spares BTL4 OFS25

Heater Spares OFS29

Burner Spares BTL4 OFS29

Heater Spares OFS63

Burner Spares BTL6 OFS63

Heater Spares OFS90

Burner Spares BTL10 OFS90

Heater Spares OFS108

Burner Spares BTL10 OFS108

Heater Spares OFS163

Burner Spares BTL20 OFS163

Unvented System Kit OFS25 & OFS29

Unvented System Kit OFS63 & OFS90

Unvented System Kit OFS108 & OFS163

PAGE

4

12

13

14

16

18

19

8

8

8

10

11

6

6

6

20

21

21

22

22

23

3

3

2

2

27

35

36

37

38

39

40

41

42

28

29

30

31

32

33

34

24

24

24

24

25

26

SECTION 1 GENERAL AND SAFETY INFORMATION

GENERAL

INFORMATION

The Andrews Water Heater has been designed and manufactured to give an efficient, reliable and long service life.

To ensure the continued, trouble-free operation of your heater at maximum efficiency, it is essential that correct installation, commissioning, operation and service procedures are carried out strictly in accordance with the instructions given in this manual. By law, installation and commissioning of the heater must be carried out by properly qualified personnel.

The heater(s) must be installed in accordance with the following requirements;

The current BUILDING REGULATIONS

The Water Supply (WATER FITTINGS) REGULATIONS 1999

Additionally, installation should be performed in accordance with all relevant requirements of the Local Authority and recommendations of the British Standards and

Codes of Practice detailed below.

BRITISH

STANDARDS

AND CODES OF

PRACTICE

BS 5410:Part 1

BS 5410:Part 2

Installations up to 44kW output capacity for space heating and hot water supply purposes.

Installations of 44kW and above output capacity for space heating and hot water supply purposes.

2

GENERAL AND SAFETY INFORMATION SECTION 1

It is the duty of manufacturers and suppliers of products for use at work to ensure, so far as is practicable, that such products are safe and without risk to health when properly used and to make available to users, adequate information about their safe and proper operation.

Andrews Water Heaters should only be used in the manner and purpose for which they were intended and in accordance with the instructions in this manual. Although the heaters have been manufactured with paramount consideration to safety, certain basic precautions specified in this manual must be taken by the user.

It is imperative that all users of the heater must be provided with all the information and instruction necessary to ensure correct and safe operation.

HEALTH AND

SAFETY

REGULATIONS

1993

Water systems in buildings have been associated with outbreaks of Legionnaires' Disease, particularly in health care facilities where occupants are significantly more susceptible to infection.

In recognition of the risks in hospitals, a Code of Practice for the Control of Legionellae in Health Care premises has been issued by the Department of Health (1991). Codes of

Practice applicable to other premises have been published by other organisations, principally the Health and Safety Executive (HS)(G70) and the Chartered Institute of

Building Services Engineers (CIBSE, TM13).

All Codes of Practice draw attention to the design and operation of water systems with reference to avoidance of factors that favour colonisation by Legionellae bacteria. These factors include stagnation, lukewarm conditions (20ºC to 45ºC) and the accumulation of debris, scale and corrosion in the base of tanks and calorifiers.

Andrews Water Heaters has commissioned an independent evaluation of their products to investigate their resistance to build-up of legionellae bacteria.

Experiments were conducted to determine whether, following a substantial challenge by legionellae pneumophilia, after overnight and stagnation conditions, the system was rendered free from viable recoverable legionellae. It was found that at 61ºC, following a challenge of approximately 107 organisms per litre, within one hour, more than 99.999% of organisms had been killed. After a subsequent stagnation period, sampling did not reveal any residual contamination. The design of the base of the water heater precludes legionellae colonisation, even after build-up of debris. The burner positioning ensures that the water at the bottom of the heater reaches the same, or higher temperature as in the rest of the heater.

Based on data obtained through experiment, the Andrews Water Heater can be described as legionellae resistant as it is considered unlikely that, at the temperature tested, the organism would colonise the water heater and present a possible health risk.

EFFECTIVENESS

IN COMBATING

LEGIONELLAE

3

SECTION 2 TECHNICAL DATA

ANDREWS MODEL NO.

Power Cons.

Start Current

Run Current

Fuse

Nozzle fitted

Pressure

Pressure

Nozzle Supplied

Pressure

Pressure

Smoke

Flue Gas Temp

CO

2

Storage Cap

Storage Cap

Rec Thro 44c

Rec Thro 44c

Rec Thro 56c

Rec Thro 56c

Heat Input

Heat Output

Heat Input

Heat Output

Efficiency

Fuel

Fuel

Burner Type

Elec. Data

Frequency

OFS25 OFS29 OFS63 OFS90 OFS108 OFS163

L/H

GPH kW kW

Ltrs

Galls

L/H

GPH

390

86

30.8

25.2

192

42

491

108

443

97

34.9

28.6

265

58

577

127

975

214

71.8

63

146

32

1227

269

146

32

1759

386

1398

307

102.6

90.3

378

83

2110

463

1677

368

123.1

108.3

Btu/Hr 105,000 119,000 245,000 350,000 420,000 630,000

Btu/Hr 86,000 97,580 215,600 308,000 369,600 554,400

% 82 82 88 88

BS2869 Kerosene Class C2

88 88

EOGB

V

Hz

Watt

BTL4

BS2869 Gas Oil Class D

BTL4 BTL6 BTL10 BTL10 BTL20

220/240 220/240 220/240 220/240 220/240 220/240

50

110

50

110

50

110

50

110

50

110

50

185

306

67

3166

694

2516

552

184.6

162.5

Amp

Amp

Amp

Kero

2.2

0.87

2.2

0.87

2.2

0.87

2.2

0.87

2.2

0.87

2.0

1.28

5 5 5 5 5 5

0.75x80s

0.85x80s 1.65x80s 2.50x80s 3.00x80s 4.50x80s

PSI

Bar

113

7.8

110

7.6

127

8.6

113

7.8

113

7.8

113

7.8

Gas Oil 0.55x80s

0.60x80s 1.25x80s 1.75x80s 2.25x80s 3.50x80s

PSI 195 211 206 214 187 174

Bar

No.

ºC

%

13.5

0

380

11.5

14.5

0

380

11.5

14.2

0

260

11.5

14.8

0

260

11.5

12.9

0

260

11.5

12

0

260

11.5

O

2

% 5.5

5.5

5.5

5.5

5.5

5.5

Flue Size

(Secondary) mm

Ins

150

6

150

6

200

8

200

8

200

8

200

8

4

TECHNICAL DATA

ANDREWS MODEL NO.

Flexible Hose

Connection Size

Fuel Cons. Kero

Fuel Cons. Kero

Fuel Cons. Gas Oil

Fuel Cons. Gas Oil

Cold Inlet Top

Cold Inlet Front

Cold Inlet Rear

Hot Outlet Top

Hot Outlet Front

Hot Outlet Rear

Drain Port

Max Work Press

Max Work Press

Max Test Press

Max Test Press

Weight Empty inc Burner

Weight Empty inc Burner

Weight Full inc Burner

Weight Full inc Burner

Shipping Height

Shipping Width

Shipping Depth

PSI

Bar

PSI

Bar

Kg

BSP

BSP

BSP

BSP

GPH

BSP

BSP

BSP

G

L/H

GPH

L/H

Lbs

Kg

Lbs mm mm mm

OFS25 OFS29 OFS63 OFS90 OFS108 OFS163

0.25

3.2

0.70

3.1

0.68

0.75

0.75

0.75

150

10.3

300

20.6

118.5

260

309

680

1645

686

737

0.25

3.7

0.81

3.5

0.77

1

1

0.75

150

10.3

300

20.6

143.5

315

406

895

1740

737

775

0.25

7.5

1.65

7.2

1.60

1.5

1.5

1.5

1.5

0.75

150

10.3

300

20.6

195

429

340

749

1530

991

883

0.25

10.8

2.4

10.3

2.3

1.5

1.5

1.5

1.5

0.75

150

10.3

300

20.6

195

429

340

749

1530

991

888

150

10.3

300

20.6

345

1.5

1.5

2

0.75

2.7

1.5

1.5

2

0.25

12.9

2.8

12.4

761

722

1591

2434

965

1073

871

699

1541

2134

965

1073

10.3

300

20.6

395

1.5

2

0.75

150

0.25

19.4

4.3

18.6

4.1

1.5

2

SECTION 2

5

SECTION 3 INSTALLATION

INTRODUCTION THE LAW REQUIRES THAT INSTALLATION IS CARRIED OUT BY A

PROPERLY QUALIFIED PERSON

Installations must be carried out in accordance with current Building Regulations, The

Water Supply (Water Fittings) Regulations 1999 and any requirements of the Local

Authority, Water and Fire Authorities and the current British Standards and Codes of

Practice listed in Section 1.

LOCATION

BURNER

ASSEMBLY

The location selected for installation of the heater must allow the provision of a satisfactory flue, adequate air supply, drain facilities and must be well illuminated.

A purpose built boiler room or compartment is strongly recommended. If a purpose built boiler room is not available, measures should be taken to protect the heater from damage and prevent any extraneous matter from being stored on or around the heater.

There must be easy access to the boiler room and heater at all times.

The heater must not be installed in a room which contains a bath or shower and must not be installed in a bedroom or bedsitting room.

We recommend that adequate clearance is left around the heater for fitting and servicing purposes with no obstruction at the front of the heater to allow easy access to the burner. Service clearance above all the heaters except heater models OFS25 should be

1270mm for removal of the flue baffle. Heater model OFS25 flue baffle is hinged for low ceiling removal. It is very important that heater models OFS108 & OFS163 have at least

600mm clearance at the rear for the installation and removal of the T/P valve if fitted.

We will supply magnesium articulated anodes part No.C333 as a service replacement for all heater models this will be beneficial where lack of head room is a problem.

The floor on which the heater is installed must be non combustible, level and of sufficient strength to withstand the heater weight when filled with water. Any combustible material adjacent to the heater must be placed or shielded as to ensure that its temperature does not exceed 65 o C (150 o F).

Every Andrews oil fired water heater is supplied with a purpose matched burner assembly. The burner is supplied complete with nozzle factory fitted for use with kerosene-class C

2 only. If the appliance is to be used with gas oil-class D

1 the nozzle must be changed before the burner is fitted to the water heater. The correct nozzle specified for use with gas oil is supplied in the nozzle burner box. It is the responsibility of the installer to ensure that the correct nozzle is fitted to suit the fuel to be used with this appliance.

6

INSTALLATION SECTION 3

The burners are supplied complete with pre-wired control thermostat loom to a harness plug with connects to the harness socket on the burner. The burners are supplied with the flange fitted to the burner blast tube in the correct position. A gasket is also supplied loose in the burner carton. See below for correct burner fitting to the heater.

Heater Models: OFS256, OFS63, OFS90 & OFS108

Locate the burner gasket on the two fixing studs fitted on the heater mounting flange.

Push the burner into the heater combustion chamber and locate the burner flange on the two fixing studs fitted on the heater mounting flange and tighten the two fixing bolts supplied with the heater.

Burner Flange

Heater

Mounting

Bracket

BURNER

ASSEMBLY

2 Locating Studs

Gasket

Heater Model: OFS29

Because of the reduced height of the combustion chamber entry position it is necessary to locate the burner onto the heater as the diagram below shows. The pump has been rotated thro 180 o so that the solenoid is positioned above the vertical to ensure correct operation.

The burner is fitted to the heater in the same way as heater models shown above.

Burner Flange

Heater

Mounting

Bracket

2 Locating Studs

Gasket

Heater Model: OFS163

The burner used on this heater is considerably bigger and heavier therefore a different fixing method is required. (See below).

Locate the burner adaptor flange on the two fixing studs fitted on the heater mounting flange and tighten the two fixing bolts supplied with the heater. Next locate both the mating plate and the gasket onto the burner adaptor flange using the four locating studs.

Finally push the burner into the heater combustion chamber and located the burner flange onto four locating studs and tighten the four fixing bolts supplied.

Burner Flange

Gasket Adaptor

Flange Heater

Mounting

Bracket

2 Locating Studs

Mating

Plate

4 Locating

Studs

7

SECTION 3 INSTALLATION

FLUE SYSTEMS

Detailed recommendations for flue installation are given in BS5410 PT 1 and

BS5410 PT 2

The Building Regulations allow the use of stainless steel under the term “Deemed to

Satisfy” but the minimum thickness must be 0.71mm (22swg).

We recommend that Selkirk SMW Flue System is used to the following specification:

Twin Wall, Insulated, Stainless Steel.

INSTALLATION

OF FLUE

The flue route should be as vertical as possible avoiding sharp bends and horizontal runs.

It is recommended that each heater should be fitted with its own individual flue.

It is essential that separate flues are used for equipment using oil and equipment using solid fuel.

A draught stabiliser is fitted to ensure burner flame stability.

If a common flue header is to be used see page 10.

Notes: 1. Draught stabiliser to be fitted to appliance (see page 9).

2. Male flue spigots to point downwards inside building to keep flue clean.

3. Use changeover section going through roof so that male spigots point upwards outside the building to assist weatherproofing.

4. The flue should be kept a safe distance from any combustible material especially when going through the roof (joists etc).

Fig. 1

TERMINAL

LOCATION

This must be at a height at least level with the highest point of the building roof and not subject to down draught. Ideally the flue should terminate 1m higher than the highest point of the roof, or at least 1m higher than the section of roof through which it projects.

8

INSTALLATION

Assembly of Draught Stabiliser Approx Height

Flue kit 6”

E013

OFS25 = 1949mm

OFS29 = 2000mm

Tee with draught stabiliser fitted

Spigot Adaptor

Heater Outlet Spigot

Crimped Adaptor

SECTION 3

FLUE

SYSTEMS

The flue should provide a negative pressure at the base of the flue between -1.1mm

(0.03”w.g) and -2.00mm (0.06”w.g.). The flue route should be as vertical as possible.

A draught stabiliser is supplied with the heater (see Figs. 2 & 3).

Assembly of Draught Stabiliser Approx Height

Flue kit 8”

C916

OFS63 = 1739mm

OFS90 = 1739mm

OFS108 = 2307mm

OFS163 = 2307mm

Tee with draught stabiliser fitted

Spigot Adaptor

Heater Outlet Spigot

Crimped Adaptor

Fig. 2

Fit the flue tee c/w draught stabiliser to the outlet spigot of the water heater

(see Figs. 2 & 3).

Fig. 3

9

SECTION 3 INSTALLATION

COMMON FLUE

HEADER

Draught

Stabiliser

Must have vertical flue discharge

Draught

Stabiliser

Fig. 4

It is recommended that individual flues are used for each heater. However if a common flue header is to be used the following guidelines must be used.

1. The cross - sectional area of the common flue header must be adequate for the combined output of both heaters. Contact the flue manufacturer or flue expert for further information.

2. Each heater shall be fitted with draught stabiliser and shall have its own flue pipe to the flue header.

3. The entry into the flue header shall be inclined towards the direction of the flue gases.

(See fig. 4).

4. The common flue header must have a vertical discharge. Its is preferable to run the flue inside the building to avoid unnecessary heat losses and minimize the risk of condensation within the flue.

10

INSTALLATION SECTION 3

The following notes are intended to give general guidance:

Where the heater is to be installed in a room or internal space the heater requires the room or internal space containing it to have a permanent air vent. The vent must be either direct to outside air or to an adjacent room or internal space which must itself have a permanent vent of at least the same size direct to outside air. The minimum effective area of the permanent air vent(s) required is as follows:

Air supply requirements for appliances up to 44kW

Where the appliance is to be installed in a room.

High level 550mm 2 per kW of appliance rating over 5kW.

Where the appliance is to be installed in a compartment. Air supply direct to outside.

High level 550mm 2 per kW of appliance rating over 5kW.

Low level 1100mm 2 per kW of appliance rating over 5kW.

Where the appliance is to be installed in a compartment. Air supply into a room.

High level 1100mm 2 per kW of appliance rating over 5kW.

Low level 1650mm 2 per kW of appliance rating over 5kW.

The room itself must have permanent ventilation direct to outside.

High level 550mm 2 per kW of appliance rating over 5kW.

Draught Stabilisers

When an appliance with draught stabiliser is fitted in a room, add 550mm 2 per kW to the free air of the combustion air inlet. When an appliance with a draught stabiliser is fitted in a compartment which is vented as above, no additional allowance is required.

Air supply requirements for appliances of 44kW and above.

High level 0.1m

2 per 300kW of appliance rating.

Low level 0.2m

2 per 300kW of appliance rating.

Typical example for heater model OFS63

Heat input 71.8kW/300kW = 0.24kW

High level 0.24kW x 0.1m

2 = 0.024m

2

Low level 0.24kW x 0.2m

2 = 0.048m

2

Some halogen containing compounds can cause rapid corrosion of the Burner and Storage Vessel if drawn into the combustion air.

Therefore, if heaters are to be installed in any of the following locations or in any applications where the above compounds are present they should be sealed off from atmospheres which may contain these compounds, and all ventilation air must be taken completely from outside.

i) Hairdressing salons and adjoining rooms or basement.

ii) Establishments where dry-cleaning solutions are used.

iii) Industrial use near chemical de-greasing processes or where solvents are used or stored.

iv) Installations where refrigerant gases are used or stored.

v) Environments with dust laden atmosphere.

AIR SUPPLY

AND

VENTILATION

11

SECTION 3 INSTALLATION

WATER

QUALITY AND

TREATMENT

Where extreme conditions of water hardness exist, scale can form in any water heating equipment, especially when the heater is working under conditions of constant heavy demand and at high temperatures.

Each water heater is fitted with one or more magnesium anode(s) which protect the tank from corrosion caused by electrolytic action. Magnesium anodes are sacrificial in that they erode as they protect. When the anode has eroded to less than 50% of it's original diameter, it may not offer protection.The anodes should be inspected annually and replaced as necessary. Frequency of anode replacement will vary dependent on water quality.

Andrews Water Heaters offer Correx TM UP powered anodes as an alternative to the standard magnesium anodes. These anodes do not need maintenance or replacement.

The potentiostat which regulates the current to the Correx TM anode, features an indicator light which shows green to indicate correct function and red to indicate malfunction.

An additional Correx TM BEMS version is available, which provides a remote warning signal.

These anodes are available as an optional extra on all Andrews Water Heaters.

In hard water areas, scale formation can occur in hot water systems and hot water heaters and the higher the temperature and volume of water used, the more problematic the scale build-up can be. Water treatment is normally recommended when the hardness reaches 100 - 150ppm (7 - 10 degrees Clark) and above. This problem can be minimised by reducing the water temperature in the heater and by fitting suitable water pretreatment equipment.

When installing Andrews Water Heaters in hard water areas we would recommend that a water treatment specialist is consulted.

The following companies have supplied water treatment equipment in the UK for a number of years to various establishments including those where Andrews water heaters have been installed.

WATER TECHNOLOGY LTD

Powke Lane Ind. Estate

Blackheath

Birmingham

B65 0AH

Contact

Gareth Morris

Tel: 0121 561 3144

Fax: 0121 561 4184

WATERMATIC

Reddicap Trading Estate

Sutton Coldfield

West Midlands

B75 7BY

Contact

Mike Potter

Tel: 08000 838496

Fax: 0121 311 1427

12

INSTALLATION

The upper “jet ports” direct the flow outward to begin the dynamic mixing action.

The lower “jet ports” direct the flow inward to increase the turbulence.

SECTION 3

WATER

CONNECTIONS

Hydrojet System

Top Cold Inlet

Connection

Tank

Heater Casing

All models now incorporate the new Mini Hydrojet system on cold inlet side connections.

This system ensures water is directed onto the tank base which minimises sediment build up from day one of installation.

The heater is fitted with the Hydrojet Total Performance System incorporated in the cold inlet dip tube. The tube is designed to increase turbulence and reduce sediment build up, reduce thermal stacking and increase delivery.

Mini

Hydrojet Inlet Nipple

(Side Cold Inlet

Connection)

13

SECTION 3 INSTALLATION

WATER

CONNECTIONS

VENTED SYSTEMS

The water heater must be supplied from a cold water feed cistern and the hot water supply pipe must be fitted with an open vent pipe in accordance with BS 5546 and

BS 6644.

The Water Supply (Water Fittings) Regulations 1999 must be observed when installing the system.

The cold water feed cistern must have an actual capacity greater than the hourly recovery rate of the heater or heaters to which it is fitted, the minimum actual capacity allowed for a feed cistern being 227 litres (50 gallons).

The actual cistern capacity is the capacity to the normal water line of the cistern.

All cisterns should be manufactured to the relevant British Standard.

The distance from the normal water line to the top of the cistern should comply with that specified by the Water Authorities.

The cold water inlet and hot water outlet connection nipples are identified in Fig. 5.

Connect the cold water feed and hot water outlet to these nipples with union adaptors for ease of servicing.

CAUTION!

DO NOT APPLY HEAT TO THESE NIPPLES IF MAKING CAPILLARY SOLDERED

JOINTS AS THEY ARE FITTED WITH PLASTIC INSERTS. MAKE THE CAPILLARY

JOINTS TO THE PIPES BEFORE CONNECTING TO THE HEATER. A DRAIN COCK IS

SUPPLIED WITH THE HEATER AND THIS SHOULD BE FITTED TO THE APPROPRIATE

BOSS AS SHOWN IN FIG. 5.

After installation of the water system, open the main water supply valve, flush the system and fill the heater.

Open the hot taps to allow air to escape from the system.

When the water is free of air, close the taps and check for leaks at the gas control thermostat, drain cock and the pipe connections at the top of the heater.

Typical water service layout for single heater vented system is shown in Fig. 6.

14

INSTALLATION

All connection sizes are shown on page 5

Front

Cold Inlet/Hot Outlet

OFS63

OFS90

OFS108

OFS163

Drain &

Secondary Return

Tapping

1.0m (40”)

Open Vent

Overflow

Front/Rear Entry Models

OFS63

OFS90

OFS108

OFS163

Top Entry Models

OFS25

OFS29

OFS108

Cold Inlet/Hot Outlet on models

OFS25

OFS29

OFS108

T & P Valve Tapping

Optional Rear

Cold Inlet/Hot Outlet

OFS63

OFS90

OFS108

OFS163

SECTION 3

WATER

CONNECTIONS

Fig. 5

Fig. 6

15

SECTION 3 INSTALLATION

WATER

CONNECTIONS

UNVENTED

SYSTEMS

Unvented Systems should be fitted by an Approved Installer

When used in an unvented system, the Andrews water Heater will supply hot water at a pressure of 3.5bar (51lbf/in 2 ), provided that this pressure is available at the mains feed.

During conditions of no-flow, system pressure may rise to a maximum of 6bar (87lbf/in 2 ) whilst the burner is operating. When testing the system, it is recommended that a maximum test pressure of 8.6bar (125 lbf/in 2 )is employed.

The heater can be used on unvented hot water storage systems, with the addition of an

Unvented Systems Kit, these are available from Andrews Water Heaters.

See Parts List Pages 40 - 42. The Wall mounting assembly is available as an optional extra.

C5

Temperature/

Pressure

Relief Valve

C4

Expansion Vessel

OPTIONAL PARTS

C8

Wall bracket Assembly

C6

2” Sq Tee

C7

Hose Assembly

Cold Water

Inlet of

Water Heater

C2 Check Valve/

C3 Expansion Valve

(a)

Cold Water Inlet

C1 Pressure Reducing

Valve / Strainer

Balance Cold Water

Take-off

(if required)

NB. Tees, elbows, stop valves and pipework not supplied.

C7 Tundish

Item C5 must be fitted into C6 and fitted on the hot water outlet nipple located at the rear of heater models OFS108 & OFS163.

When assembling items C1 and C2, ensure that the flow arrows marked on the components are pointing in the direction of flow, i.e. towards the water heater.

The cold water for services may be drawn from the 22mm compression port on item

C1(a). The water pressure at this point will be similar to that available at the hot water outlet of the water heater. If port (a) is not used, it should be sealed with the blanking plug supplied.

16

INSTALLATION SECTION 3

If higher flow rates are required for the cold water services, a suitable tee fitting should be fitted to the pipework, upstream of item C1.

The pipework fitted to the tundish outlet should be one size larger than the outlet pipe of the safety device and should be terminated at a suitable drain (see Building Regulations

1991 Approved Document G3).

All fittings and materials must be suitable for use with drinking water and listed in the current Water Research Centre "Materials and Fittings Directory".

Installation of unvented hot storage water systems must comply with Part G of

Schedule 1 of the Building Regulations 1991.

Typical water service layout for single heater unvented system is shown in Fig. 7.

WATER

CONNECTIONS

Front Rear Entry

Models

OFS63

OFS90

OFS108

OFS163

See Note

Top Entry Models

OFS25

OFS29

OFS108

Note: On heater models OFS108 & OFS163 the 2” T/P is located at the rear via a

2” Sq Tee.

Fig. 7.

17

SECTION 3 INSTALLATION

ELECTRICAL

SUPPLY

Wiring external to the water heater must be installed in accordance with the I.E.E.

Regulations for the wiring of buildings and to any local regulations that may apply.

The heaters are designed to run off 220/240V 1 Ph 50 Hz supply and the fuse rating is

5 Amp See pages 4 & 5.

The method of connection to the mains electricity supply should facilitate complete electrical isolation of the appliance preferably by use of an unswitched shuttered socket outlet in conjunction with a fused three pin plug both complying with the requirements of BS 1363/A.

Alternatively, a fused double pole switch of fused spur box serving only the heater may be used.

The point of connection to the mains should be readily accessible and adjacent to the appliance.

Connect electrical supply to the harness plug/socket (see Fig. 8 Wiring Diagram) Mains input cable should be connected to the mains supply as detailed above.

X1 2 3 1 10 9 8 6 4 11 12

Key to diagram

X1

X2

H1

AL

M

PE

T

V1

Motor

Photocell

Ignition transformer

Oil Valve

LMO/LOA 2.. control

7 pole connector

Remote burner run signal

Remote lockout signal

M

T

X2

L1

L1

N T1 T2 S3 B4

N T1 T2 S3 B4

AL H1

220/240V

50Hz

L

N

Time Clock and/or

Switch if fitted

L

220/240V

50Hz

N N N

Stat 82o (max)

Limit 93o C

TLSC thermostat

L N

TC2 stat

TLSC stat

V1

PE

18

Fig. 8.

INSTALLATION SECTION 3

A fire valve and filter must be fitted in the fuel supply to the burner. (Not Supplied).

Use either Kerosene Class C2 (BS2869) or Gas Oil Class D (BS2869). NO OTHER FUEL

SHOULD BE USED. Schematic representations of the fuel supply are shown below. It is suggested where possible a gravity feed is used. Should a negative head system be employed, see typical example below.

MATERIALS AND JOINTING

All materials including the fuel storage tank, fuel supply pipe and jointing materials must comply fully with the requirements in BS5410.

SITING OF FUEL STORAGE TANK

The siting of the fuel storage tank must fully comply with the requirements in BS5410.

FUEL SUPPLY

1

2

H

9

7

4

TYPICAL GRAVITY FROM THE BOTTOM OF OIL TANK

1 Oil tank

2 Feed line

3 Filter

4 Burner

5 Degasifier

6 Suction line

7 Return line

8 Fire valve

9 Non return valve

H meters

1

2

3

4

Total meters

Ø i. 10mm

30

35

40

45

6

5

8

3

1 10

7

6

P

H

4

TYPICAL GRAVITY FEED OVER THE TOP OF OIL TANK

1 Oil tank

3 Filter

4 Burner

6 Suction line

7 Return line

8 Fire valve

9 Non return valve

10 Foot valve

H meters

1

2

3

4

Total meters

Ø i. 10mm

30

35

40

45

9

7

1

10

H

8

3

3

4

6

TYPICAL SUCTION FEED

1 Oil tank

3 Filter

4 Burner

6 Suction line

7 Return line

10 Foot valve

H

meters

0,5

1

1,5

2

2,5

3

3,5

Total meters

Ø i. 10mm Ø i. 12mm

26 54

24

18

47

38

14

10

6

-

30

23

15

7

H = Measurement between minimum oil level and pump axis

L = Max. length of suction line, including vertical lifts. For each bend of valve deduct 0,25m.

Ø = Internal diameter of pipe

19

SECTION 4 COMMISSIONING

C

IMPORTANT:

These oil fired water heaters must be commissioned by a competent engineer.

CAUTION: DO NOT OPERATE THE WATER HEATER UNTIL THE STORAGE VESSEL IS

COMPLETELY FILLED WITH WATER. WITH WATER RUNNING FROM ALL HOT TAPS.

CAUTION: ENSURE THE CORRECT NOZZLE IS FITTED TO SUIT THE FUEL TYPE BEING

USED. SEE TECHNICAL DATA SECTION 2 OR PAGE 21.

A. To light the burner

1) Turn on the fuel supply to heater.

2) Switch on power supply to burner.

3) Rotate the thermostat adjustment knob to the desired water temperature at which the burner will begin its prepurge. At about 15 secs. the burner will light.

The thermostat should be set at a temperature to suit the system it controls.

4) The two control thermostats should be set to the same temperatures . (OFS108

& OFS 163 only)

B. To shut off the burner

1) Rotate the thermostat adjustment knob to the off position.

2) For long periods only, eg. holidays or periods of 7 days switch the burner power supply ‘OFF’, and turn off the fuel service cock. For shorter periods eg. less than

7 days, leave the heater under control of the thermostat.

C. Burner Adjustment

The burner comes factory pre-set. The correct burner head settings are shown below.

Refer to the table if the nozzle or electrodes are replaced.

B

D

MOD.

BTL 4

A

3

B

0

C

6

D

2,5

BTL 6/10/20 3 2 6 3

A

COMBUSTION

ADJUSTMENT

The burner is factory pre-set to an average value that must then be adjusted to the water heater in question. To adjust the combustion device, start by increasing the air volume.

When the burner starts it is burning with excess air and smoke number 0. Reduce the air volume until soot occurs and increase again to reach a combustion free of soot. By this procedure an optimum adjustment is obtained. See Below.

Loosen the fixing screw ‘6’ and bring the air damper into the position thought to be necessary as a midway point for fuel to be burnt. Turn the main switch to ON to power the burner and ignite it. Correct, if necessary, combustion air delivery by adjusting the intake damper and the position of the deflector disk (adjustable via screw 2). The burner is, in fact, fitted with a special screw to adjust the position of the deflector disk; this device allows for optimisation of combustion by reducing or increasing the air flow between deflector disk and head. It is normally necessary to reduce (undo screw 2) the air flow between deflector disk and head when there is reduced fuel delivery: this passage must be proportionately more open (screw in screw 2) when the burner is working with a higher fuel delivery rate. After modifying the position of the deflector disk, it is, usually, necessary to correct the air damper positions and afterwards check for proper ignition. See diagrams on page 21.

20

COMMISSIONING SECTION 4

1. Air register opening adjustment

-Reference index in position “0” register closed

-Reference index in position “9” register open

2. Flame disc position

3. Air register opening adjuster reference index

4. Air damper in open position (9)

5. Air damper in closed position (0)

6. Air Damper Fixing Screw

When the combustion adjustment is complete the following combustion analysis readings will be achieved.

1

6

7

6

5

4

3

2

1

0

3

4

5

2

Andrews Model No

Smoke

Flue Gas Temp

CO

2

No

ºC

%

O

2

%

OFS25

0

380

11.5

5.5

OFS29

0

380

11.5

5.5

OFS63

0

260

11.5

5.5

OFS90 OFS108 OFS163

0

260

11.5

0

260

11.5

0

260

11.5

5.5

5.5

5.5

AIR

ADJUSTMENT

PRESSURE

GAUGE

PUMP

ADJUSTMENT

PUMP

PRESSURE

ADJUSTMENT

The pump pressure must be adjusted and set correctly to suit the fuel type being used

See table below

Andrews Model No

Nozzle fitted Kero

Pressure PSI

Pressure

Nozzle

Supplied

Pressure

Pressure

Bar

Gas

Oil

PSI

Bar

OFS25 OFS29 OFS63 OFS90 OFS108 OFS163

0.75x80s

0.85x80s

1.65x80s

2.50x80s

3.00x80s

4.50x80s

113 110 127 113 113 113

7.8

7.6

8.6

7.8

7.8

7.8

0.55x80s

0.60x80s

1.25x80s

1.75x80s

2.25x80s

3.50x80s

195

13.5

211

14.5

206

14.2

214

14.8

187

12.9

174

12

21

SECTION 4 COMMISSIONING

INSTRUCTING

THE USERS

USERS

SAFETY

GUIDE

When satisfactory commissioning and testing has been achieved, hand this manual to the user or purchaser and explain the method of economic and efficient operation.

Explain that:

1. Other than for long shutdown periods, the heater must be left operating normally.

2. It is important that the control thermostat is set at the lowest temperature consistent with the user's needs.

Ensure that the user or purchaser is fully conversant with the lighting, shutdown and general operating procedures.

Advise that any air vents must be kept clear and items must not be placed or stored in the vicinity of the heater.

Advise of precautions necessary to prevent damage to the heater and systems in the event of the system remaining inoperative during frost conditions.

Advise the user or purchaser that for continued efficient and safe operation of the heater, it is important that magnesium anodes are inspected annually and that adequate servicing is carried out at regular intervals by the installer.

For your safety read before lighting the appliance

WARNING

1. Always follow manufacturers instructions when lighting the appliance. Failure to do so may result in damage to property, personal injury or loss of life.

WARNING

Hotter water increases the risk of scalding. Before changing the temperature refer to instruction manual or data label. Hot water can produce third-degree burns in:

6 seconds at 140ºF (60°C)

30 seconds at 130°F (54°C)

22

OPERATION

When properly installed and adjusted, the heater will require minimal attention. Should it become necessary to completely drain the heater, close the cold water inlet valve and open a hot water tap to allow air to enter the system. Fit a suitable hose to the drain cock and open.

Whenever the heater is filled with cold water, condensation may form on the storage vessel surfaces when the burner is lit. This is normal and will disappear when the heater warms up.

The thermostats fitted to heater models OFS25, OFS29, OFS63 & OFS90 have a built in high limit thermostats. In the case of dangerous water temperatures the fuel supply will be automatically shut off. The reason for such high temperature must be corrected before the heater is relit.

The two control thermostats where applicable (OFS108 & OFS163) should both be set to the same operating temperatures. This will ensure stacking does not occur and will avoid high water temperatures when small amounts of water are drawn off during peak times of use.

SECTION 5

23

SECTION 6 SERVICING

INTRODUCTION

Servicing must be carried out be a properly qualified person.

Whilst giving these instructions for the care of the Heater, it is recommended that checks are carried out by the installer at least every 6 months. Ensure good ventilation by keeping the heater free of extraneous materials and clear of dust and lint. Keep pipework, flue and tops of heaters clear of any combustible materials. A water softener or lime inhibitor should be employed in hard water areas. The heater should be inspected every few months via the hand hole cleanout and lime and silt deposits removed failure to do so will shorten heater life and may invalidate the warranty.

Note! The cleanout hole gasket must be renewed whenever the cover is removed.

(See parts lists pages 32,34,36 & 38).

PRE-SERVICE

OPERATIONS

Before servicing, carry out the following operations.

1. Turn off the fuel supply to the heater.

2. Turn off the electrical supply to the heater.

3. Turn off the cold water supply to the heater.

4. Turn on the hot water draw-off taps served by the water heater, or, for multiple installations, turn off the hot water outlet connection valve and secondary return valve.

5. Drain down using the drain valve on the heater.

BURNER

ASSEMBLY

The burner should be checked every 6 months and if necessary cleaned as follows:

1. Inspect fuel tank and drain any water contamination

2. Clean fuel filters (replace if necessary)

3. Remove the burner from combustion chamber

4. Remove all carbon from burner parts. Pay particular attention to electrode and nozzle

(replace if necessary). Remove all dust/dirt from burner fan

5. Clean HT leads and check condition

6. Clean photo-cell

7. Check condition of control box terminals, check security and condition of wiring

8. Clean pump filter. Check condition of fuel pump drive dog, ensure pump is fitted correctly when assembling burner. Ensure burner settings are correct

9. Check combustion chamber condition, every 6 months

FLUEWAY

The flueway should be checked every 6 months and if necessary cleaned as follows:

1. Remove burner assembly complete

2. Disconnect the flue/flue stabiliser from heater

3. Inspect and clean the secondary flue installation as necessary

4. Lift out the baffle/baffles from inside the central flueway

5. Clean the flueway with a brush and clean any deposit from the underside of the storage vessel bottom and from the flue baffle

6. Re-assemble in the reverse order

7. Re-light and carry out commissioning check

24

SERVICING SECTION 6

Magnesium sacrificial anode(s) is (are) fitted to the top of the storage vessel. The anode(s) will prevent corrosion of the storage vessel. Anode condition should be checked annually and replaced if excessive wear is present. We recommend that the anode(s) are replaced annually.

MAGNESIUM

ANODE(S)

1. Withdraw each anode using 1 1/16in AF socket spanner. A new anode measures 21 mm diameter.

2. An anode should be replaced, if, at any point it’s length, the diameter is reduced to half, or less of original. Particular attention should be paid to the ends.

3. If the anode is encrusted with limescale, it should be either wire brushed to reveal bright metal or replaced.

4. For models OFS25 & OFS29 withdraw the hot water outlet nipple/anode and replace

(See Fig. 9) - Refer to parts list pages 32 & 32.

5. Replace all anodes with service anode (articulated) part no. C333.

OFS25 & OFS29

Disconnect pipe fittings and turn nipple anti-clockwise to remove.

Where Correx TM anodes are fitted, no maintenance is necessary.

Fig. 9

25

SECTION 6 SERVICING

CLEANING

THE STORAGE

VESSEL

ALL MODELS

The storage vessel should be checked and cleaned annually

Scale formation in the base of the vessel may occur, particularly in hard water areas and is normally associated with high usage and high water temperatures. It is characterised by a rumbling noise when the main burner is lit. Scale formation in the base of the vessel will affect the efficiency of the water heater and reduce the life of the storage vessel.

It should be noted that the failure of the storage vessel due to scale formation on the base will not be covered by the terms of the warranty.

Any scale formation which cannot be removed by normal means of cleaning should be removed by chemical descaling. See below.

DESCALING INFORMATION

When descaling the water storage heater your attention is drawn to the following guidelines.

SAFETY FIRST

DUE TO THE CORROSIVE NATURE OF THE DESCALING FLUID ITS ESSENTIAL THAT

SUITABLE PROTECTIVE CLOTHING EQUIPMENT IS USED AND ADEQUATE

VENTILATION IS AVAILABLE WHEN DESCALING. IT IS IMPORTANT TO FOLLOW

DESCALING MANUFACTURERS INSTRUCTION BEFORE AND DURING USE.

1.

Isolate the electrical power supply to burner.

2.

Close water inlet valve and drain heater tank.

3.

Remove magnesium sacrificial anode.

Note: It is recommended that a new anode is fitted.

4.

Add suitable hydrochloric based descale acid, the requirement is normally 5 litres for

OFS25 & OFS29 and 10 for OFS63, OFS90, OFS108 & OFS163.

5.

After a minimum of one hour relight the burner for 2 minutes (Maximum).

6.

Turn the burner off and drain off descale fluid through drain port.

7.

Open cold water feed valve and fill heater tank.

8.

Drain and flush out heater for minimum of 30 minutes.

9.

Replace hot outlet nipple/anode (OFS25 & OFS29).

10. Replace anodes using service anode (articulated) part no. C333.

11. Relight the burner and allow the heater to come to its working temperature.

IMPORTANT!

Remove Correx anode(s) if fitted. Re-fit the Correx anode(s) when descaling operation is complete.

26

FAULT FINDING

1. BURNER WILL

NOT START

2. BURNER MOTOR

RUNS - BURNER

GOES TO

LOCKOUT

3. FUEL REACHES

NOZZLE BUT

FAILS TO IGNITE

4. BURNER LIGHTS

BUT RUNS TO

LOCKOUT

5. BURNER RUNS

BUT SMOKE

EMITTED FROM

FLUE

6. WATER

TEMPERATURE

TOO LOW

7. NOT ENOUGH

HOT WATER

8. WATER DRIPPING

FROM BASE OF

HEATER

9. RUMBLING NOISE

(KETTLING)

(a) Check electrical supply and ON/OFF switch is ‘ON’.

(b) Check thermostat circuit is made and also time clock contacts are closed and limit thermostat is set.

(c) Check if locked out. Re-set.

(d) Check continuity of burner motor windings.

(e) Check if fuel pump is seized.

(f) Replace faulty parts.

(a) Check for blocked fuel pipe, check filters in filter bowl, rear of pump and rear of nozzle are clean, and suction pipework for air leaks.

(b) Disconnect nozzle output pipe from fuel pump. Switch burner on momentarily and check for delivery of fuel.

(c) If fuel not delivered from pump, check pump/motor drive dog.

(d) If pump is turning and no fuel is delivered replace pump.

(e) Check solenoid valve is opening and trace supply from control box.

(f) Check for blocked nozzle.

(g) Check fuel in tank.

(a) Check electrode adjustment.

(b) Check for dirty or cracked electrodes.

(c) Check HT leads and connections.

(d) Check electrical input to transformer.

(e) Replace faulty parts.

(a) Carry out checks 2-3 as above.

(b) Check that photo-cell is correctly located in holder.

(c) Check photo-cell is clean and not cracked.

(d) Replace photo-cell.

(e) Replace control box.

(a) Check fuel quality.

Fuel should be free from water and dissolved material such as engine oil or anti-freeze.

(b) Check for blocked fuel filter or pick-up pipe.

(c) Check nozzle is tight in holder.

(d) Check burner settings.

(a) Reset the higher temperature.

(b) Check pressure at burner.

(a) Check pressure at burner.

(b) Check amount of water being used against recovery rate given on Data Plate.

(a) Check if water stops dripping when water in heater is hot. If water stops problem is condensation caused by incorrectly designed flue or by tank cooling excessively i.e. more hot water being used than recovery rate of the heater.

(b) If water continues to drip when heater is hot. Problem is a leaking joint or storage vessel.

(a) Scale formation in heater, consult water treatment specialist.

Heater must be descaled and suitable water treatment provided to avoid problem re-occurring.

SECTION 7

ALL MODELS

27

SECTION 8 PARTS LIST AND ILLUSTRATIONS

HEATER

SPARES

OFS25

A2

A1

A4

A8

A3

A7

A6

A5

B1

28

Ref.

Part No.

A5

A6

A7

A8

B1

A1

A2

A3

A4

E707

E708

E709

C333

C381

C103

C247

C719

E729

Description

Cold Inlet Dip Tube

Hot Outlet Nipple Anode

Flue Baffle (Hinged)

Articulated Service Anode

Drain Valve

Drain Valve Socket

Drain Valve Nipple

Control/High Limit Thermostat

Burner Assembly

Qty.

1

1

1

1

1

1

1

1

1

PARTS LIST AND ILLUSTRATIONS

A1

A5

A12

A13

A3

A4

A2

A8

A7

A9

A6

A10

A11

SECTION 8

BURNER

SPARES

BTL4

OFS25

Ref.

Part No.

A5

A6

A7

A8

A1

A2

A3

A4

A9

A10

A11

A12

A13

E676

E679

E683

E685

E687

E689

E691

E694

E696

E699

E702

E725

E726

Description

Blast Tube

Brake Plate

Electrode

H.T. Cable

Fan

Photocell

Transformer

Transformer Cable

Control Box

Motor

Pump

Nozzle - Kerosene - 0.75 x 80’s

Nozzle - Gas Oil - 0.55 x 80’s

Qty.

1

1

1

1

2

2

1

1

1

1

1

1

1

29

SECTION 8 PARTS LIST AND ILLUSTRATIONS

HEATER

SPARES

OFS 29

A2

A1

A4

A8

A3

A7

A6

A5

B1

30

Ref.

Part No.

A5

A6

A7

A8

B1

A1

A2

A3

A4

E710

E711

E712

C333

C381

C103

C247

C719

E730

Description

Cold Inlet Dip Tube

Hot Outlet Nipple Anode

Flue Baffle (Hinged)

Articulated Service Anode

Drain Valve

Drain Valve Socket

Drain Valve Nipple

Control/High Limit Thermostat

Burner Assembly

Qty.

1

1

1

1

1

1

1

1

1

PARTS LIST AND ILLUSTRATIONS

A1

A5

A12

A13

A3

A4

A2

A8

A7

A9

A6

A10

A11

SECTION 8

BURNER

SPARES

BTL 4

OFS 29

Ref.

Part No.

A5

A6

A7

A8

A1

A2

A3

A4

A9

A10

A11

A12

A13

E676

E679

E683

E685

E687

E689

E691

E694

E696

E699

E702

E703

E607

Description

Blast Tube

Brake Plate

Electrode

H.T. Cable

Fan

Photocell

Transformer

Transformer Cable

Control Box

Motor

Pump

Nozzle - Kerosene - 0.85 x 80’s

Nozzle - Gas Oil - 0.60 x 80’s

Qty.

1

1

1

1

2

2

1

1

1

1

1

1

1

31

SECTION 8 PARTS LIST AND ILLUSTRATIONS

HEATER

SPARES

OFS 63

B1

A9

A4

A8

A3

A6

A7

A1

A2

(Rear)

A2

(Rear)

A2

A5

32

Ref.

Part No.

A5

A6

A7

A8

A1

A2

A3

A4

A9

B1

C333

C534

E050

E713

C299

C381

C103

C247

C719

E731

Description

Articulated Service Anode

Hot Outlet Nipple 1.5 BSP

Hydrojet Hot Outlet / Cold Inlet Nipple 1.5 BSP

Flue Baffle

Cleanout Pad Seal

Drain Valve

Drain Valve Socket

Drain Valve Nipple

Control/High Limit Thermostat

Burner Assembly

Qty.

1

1

1

1

3

3

1

11

1

1

PARTS LIST AND ILLUSTRATIONS

A1

A5

A12

A13 A3

A4

A2

A8

A7

A9

A6

A10

A11

SECTION 8

BURNER

SPARES

BTL6

OFS63

Ref.

Part No.

A5

A6

A7

A8

A1

A2

A3

A4

A9

A10

A11

A12

A13

E676

E680

E683

E685

E687

E689

E691

E694

E696

E699

E702

E610

E704

Description

Blast Tube

Brake Plate

Electrode

H.T. Cable

Fan

Photocell

Transformer

Transformer Cable

Control Box

Motor

Pump

Nozzle - Kerosene - 1.65 x 80’s

Nozzle - Gas Oil - 1.25 x 80’s

Qty.

1

1

1

1

2

2

1

1

1

1

1

1

1

33

SECTION 8 PARTS LIST AND ILLUSTRATIONS

HEATER

SPARES

OFS 90

B1

A9

A4

A8

A3

A6

A7

A1

A2

(Rear)

A2

(Rear)

A2

A5

34

Ref.

Part No.

A5

A6

A7

A8

A1

A2

A3

A4

A9

B1

C333

C534

E050

E713

C299

C381

C103

C247

C719

E732

Description

Articulated Service Anode

Hot Outlet Nipple 1.5 BSP

Hydrojet Hot Outlet / Cold Inlet Nipple 1.5 BSP

Flue Baffle

Cleanout Pad Seal

Drain Valve

Drain Valve Socket

Drain Valve Nipple

Control/High Limit Thermostat

Burner Assembly

Qty.

1

1

1

1

3

3

1

11

1

1

PARTS LIST AND ILLUSTRATIONS

A1

A2

A12

A13

A5

A4

A3 A8

A7

A9

A6

A10

A11

SECTION 8

BURNER

SPARES

BTL10

OFS90

Ref.

Part No.

A8

A9

A10

A11

A12

A13

A1

A2

A3

A4

A5

A6

A7

E677

E687

E681

E685

E683

E689

E692

E694

E697

E700

E702

E614

C921

Description

Blast Tube

Fan

Brake Plate

H.T. Cable

Electrode

Photocell

Transformer

Transformer Cable

Control Box

Motor

Pump

Nozzle - Kerosene - 2.50 x 80’s

Nozzle - Gas Oil - 1.75 x 80’s

Qty.

1

1

1

1

1

1

1

1

2

2

1

1

1

35

SECTION 8 PARTS LIST AND ILLUSTRATIONS

HEATER

SPARES

OFS108 A1

A10

A5

A11

B1

A7

A2

(Rear)

A2

A6

A9

A8

A2

(Rear)

A3

36

Ref.

Part No.

A5

A6

A7

A8

A1

A2

A3

A4

A9

A10

A11

B1

E714

C534

E050

C333

E715

E716

C381

C103

C247

C719

C927

E733

Description

Cold Inlet Dip Tube

Hot Outlet Nipple 1.5 BSP

Hydrojet Hot Outlet / Cold Inlet Nipple 1.5 BSP

Articulated Service Anode

Flue Baffle

Cleanout Pad Seal

Drain Valve

Drain Valve Socket

Drain Valve Nipple

Control/High Limit Thermostat

Control Thermostat

Burner Assembly

Qty.

12

1

1

1

1

4

1

2

1

1

1

1

PARTS LIST AND ILLUSTRATIONS

A1

A2

A12

A13

A5

A4

A3 A8

A7

A9

A6

A10

A11

SECTION 8

BURNER

SPARES

BTL10

OFS108

Ref.

Part No.

A5

A6

A7

A8

A1

A2

A3

A4

A9

A10

A11

A12

A13

E677

E687

E681

E685

E683

E689

E692

E694

E697

E700

E702

E705

E612

Description

Blast Tube

Fan

Brake Plate

H.T. Cable

Electrode

Photocell

Transformer

Transformer Cable

Control Box

Motor

Pump

Nozzle - Kerosene - 3.00 x 80’s

Nozzle - Gas Oil - 2.25 x 80’s

Qty.

1

1

2

1

1

2

1

1

1

1

1

1

1

37

SECTION 8 PARTS LIST AND ILLUSTRATIONS

HEATER

SPARES

OFS163

B1

A2

A5

(Not Shown)

A4

A3

A6

A7

A8

A9

A1

A2

(Rear)

A2

(Rear)

A10

A11

38

Ref.

Part No.

A5

A6

A7

A8

A1

A2

A3

A4

A9

A10

A11

B1

C333

C534

E050

E717

C299

C381

C103

C247

C719

C927

E718

E734

Description

Articulated Service Anode

Hot Outlet / Cold Inlet Nipple 1.5 BSP

Hydrojet Cold Inlet Nipple 1.5 BSP

Flue Baffle

Cleanout Pad Seal

Drain Valve

Drain Valve Socket

Drain Valve Nipple

Control/High Limit Thermostat

Control Thermostat

Burner Adaptor Flange

Burner Assembly

Qty.

1

1

1

1

4

1

1

20

1

1

1

1

PARTS LIST AND ILLUSTRATIONS

A1

A12

A13

A5

A4

A3

A8

A7

A9

A6

SECTION 8

BURNER

SPARES

BTL20

OFS163

A2

A10

A11

Ref.

Part No.

A5

A6

A7

A8

A1

A2

A3

A4

A9

A10

A11

A12

A13

E678

E688

E682

E686

E684

E690

E693

E695

E698

E701

E702

E706

C923

Description

Blast Tube

Fan

Brake Plate

H.T. Cable

Electrode

Photocell

Transformer

Transformer Cable

Control Box

Motor

Pump

Nozzle - Kerosene - 4.50 x 80’s

Nozzle - Gas Oil - 3.50 x 80’s

Qty.

1

1

2

1

1

2

1

1

1

1

1

1

1

39

SECTION 8 PARTS LIST AND ILLUSTRATIONS

UNVENTED

SYSTEM KIT

OFS25 & OFS29

C3

C4

C1

(a)

C8

C7

C6

C5

C2

C1

C2

C3

C4

C5

C6

Ref.

Part No.

B171

C780

C781

C782

E462

C783

C772

C7

C8

B173

C788

Description

Unvented Systems Kit Complete

Pressure Reducing Valve/Strainer

Check Valve / Expansion Valve

Expansion Vessel

Temperature/Pressure Relief Valve

Tundish

Adaptor

Wall Mounting Kit for Expansion Vessel

Hose Assembly

Wall Bracket Assembly

Qty.

1

1

1

1

1

1

1

1

1

40

PARTS LIST AND ILLUSTRATIONS

C4

C3

C8

C5

C2

C6

C1

C1

C2

C3

C4

C5

C6

Ref.

Part No.

B172

C784

C785

C782

C380

C384

C786

C7

C8

B173

C788

Description

Unvented Systems Kit Complete

Pressure Reducing Valve/Strainer

Check Valve

Expansion Vessel

Temperature/Pressure Relief Valve

Tundish

Expansion Valve

Wall Mounting Kit (Optional)

Hose Assembly

Wall Bracket Assembly

C7

Qty.

1

1

1

1

1

1

1

1

1

SECTION 8

UNVENTED

SYSTEM KIT

OFS63 & OFS90

41

SECTION 8 PARTS LIST AND ILLUSTRATIONS

UNVENTED

SYSTEM KIT

OFS108 &

OFS163

C5

C4

C6

C9

C3

C2

C1

C8

C7

C1

C2

C3

C4

C5

C6

C7

Ref.

Part No.

B267

C784

C785

C786

C782

E675

C908

E497

C8

C9

B173

C788

Description

Unvented Systems Kit Complete

Combined Reducing Valve/Strainer

Check Valve

Expansion Valve

Expansion Vessel (25 Litre)

Temperature/Pressure Relief Valve 2”

2” Square Equal Tee

Tundish from Expansion Valve and T/P Valve 2 x 2

1

2

Qty.

1

1

1

1

1

1

1

1

Wall Mounting Kit (Optional)

Hose Assembly

Wall Bracket Assembly

1

1

42

Baxi Commercial Division

Wood Lane, Erdington,

Birmingham B24 9QP

Email: [email protected]

www.andrewswaterheaters.co.uk

Sales:

0845 070 1056

Technical:

0845 070 1057

advertisement

Was this manual useful for you? Yes No
Thank you for your participation!

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

Related manuals

Download PDF

advertisement