Baxi Solo 3 PF Quick Start Manual

Baxi Solo 3 PF

Wall Mounted Powered Flue

Gas Fired Central Heating Unit

Installation and Servicing Instructions

Please leave these instructions with the user

Baxi UK Limited is one of the leading manufacturers

of domestic heating products in the UK.

Our first priority is to give a high quality service to our

customers. Quality is built into every Baxi product -

products which fulfil the demands and needs of

customers, offering choice, efficiency and reliability.

To keep ahead of changing trends, we have made a

commitment to develop new ideas using the

latest technology - with the aim of continuing to

make the products that customers want to buy.

Everyone who works at Baxi has a commitment to

quality because we know that satisfied customers

mean continued success.

We hope you get a satisfactory service from Baxi. If

not, please let us know.

Natural Gas

Baxi Solo 3 30 PF

G.C.No. 41 075 04

Baxi Solo 3 40 PF

G.C.No. 41 075 05

Baxi Solo 3 50 PF

G.C.No. 41 075 06

Baxi Solo 3 60 PF

G.C.No. 41 075 07

Baxi Solo 3 70 PF

G.C.No. 41 075 08

Baxi Solo 3 80 PF

G.C.No. 41 075 09

Baxi is a BS-EN ISO 9001 Accredited Company

The boiler meets requirements of Statutory Instrument “The Boiler (Efficiency) Regulations 1993 N

3083” and is deemed to meet the requirements of Directive 92/42/EEC on the efficiency requirements for new hot water boilers fired with liquid or gaseous fuels:-

Type test for purpose of Regulation 5 certified by: Notified Body 0086.

Product/Production certified by: Notified Body 0086.

For GB / IE only.

1.0 Introduction 4

2.0 Technical Data 5

3.0 System Details 7

4.0 Site Requirement 10

5.0 Installation 14

6.0 Commissioning the Appliance 32

7.0 Fitting the Outercase 34

8.0 Overheat Cut-Off Device 35

9.0 Annual Servicing 36

10.0 Changing Components 38

11.0 Fault Finding 42

12.0 Short Parts List 44

13.0 Notes 45

Section Page

Contents

1.0 Introduction

4 1

STANDARD

B.S. 6891

B.S. 5546

B.S. 5449

B.S. 6798

B.S. 5440: Pt 1

B.S. 5440: Pt 2

B.S. 7593

B.S. 4814

B.S. 6283

SCOPE

Gas Installation.

Installation of hot water supplies for

domestic purposes.

Forced circulation hot water systems.

Installation of gas fired hot water

boilers.

Flues.

Ventilation.

Water Treatment.

Expansion vessels for hot water

systems.

Safety and control devices for use in

hot water systems.

HEAT OUTPUT Q

Model Min Max

30 5.86kW (20,000 Btu/h) 8.79kW (30,000 Btu/h) 40 9.09kW (31,000 Btu/h) 11.72kW (40,000 Btu/h) 50 12.02kW (41,000 Btu/h) 14.65kW (50,000 Btu/h) 60 14.95kW (51,000 Btu/h) 17.58kW (60,000 Btu/h) 70 17.88kW (61,000 Btu/h) 20.5kW (70,000 Btu/h) 80 20.8kW (71,000 Btu/h) 23.45kW (80,000 Btu/h)

B.S. Codes of Practice, most recent

version should be used

1.1 Description

1. The Baxi Solo 3 PF is a gas fired room sealed fan assisted central heating boiler with range rated outputs as shown in the table below

2. Each appliance is preset at a MID

RANGE heat

input rating and is designed for use on

NATURAL

GAS

only.

3. All boilers are suitable for fully pumped open vented central heating and domestic hot water systems and sealed systems.

4. The appliance data badge is fitted to the combustion box door.

1.2 Installation

1. The appliance is suitable for installation only in G.B. and I.E. and should be installed in accordance with the rules in force. For Ireland install in accordance with I.S.813

“INSTALLATION OF

GAS APPLIANCES”. The installation must be carried

out by a CORGI Registered Installer or other competent person and be in accordance with the relevant requirements of the current

GAS SAFETY (Installation and Use) REGULATIONS, the BUILDING REGULATIONS (Scotland) (Consolidation), the LOCAL BUILDING REGULATIONS, the CURRENT I.E.E. W

IRING REGULATIONS and the bye laws of the Local

Water Undertaking. Where no specific instructions are given, reference should be made to the relevant current

BRITISH STANDARD CODES

OF PRACTICE.

2. All systems must be thoroughly flushed and treated with inhibitor (see Section 3.1).

1.3 Important Information

Man-Made Mineral Fibre

a) Some component parts of this appliance (insulation pads, gaskets and rope seals) are manufactured from man-made mineral fibre.

b) Prolonged or excessive exposure to this material may result in some irritation to the eyes, skin or respiratory tract.

c) It is advisable to wear gloves when handling these items.

d) Irritant dust will only be released from the items if they are broken up or subjected to severe abrasion. In these instances a suitable dust mask and goggles should be worn.

e) Always thoroughly wash hands after installation, servicing or changing components.

f) When disposing of any items manufactured from man-made mineral fibre care must be exercised.

g) If any irritation of the eyes or severe irritation of the skin is experienced seek medical attention.

IMPORTANT: State of adjustment - Check that the state of adjustment given on the data plate is compatible with local supply conditions.

“Benchmark” Log Book

As part of the industry-wide “Benchmark” intiative all Baxi boilers now include an Installation, Commissioning and Service Record Log Book. Please read the Log Book carefully and complete all sections relevant to the appliance and installation. These include sections on the type of controls employed, flushing the system, burner operating pressure etc. The details of the Log Book will be required in the event of any warranty work. Also, there is a section to be completed at each subsequent regular service visit.

2.0 Technical Data

1 5

Model 30 40 50 60 70 80

P Heat Output (Max) kW 8.79 11.72 14.65 17.58 20.5 23.45

Btu/h 30,000 40,000 50,000 60,000 70,000 80,000

P Heat Output (Min) kW 5.86 9.09 12.02 14.95 17.88 20.8

Btu/h 20,000 31,000 41,000 51,000 61,000 71,000

Q Heat Input (Max) kW 10.99 14.65 18.32 21.98 25.64 29.31

Btu/h 37,500 50,000 62,500 75,000 87,500 100,000

Q Heat Input (Min) kW 7.33 11.36 15.02 18.68 22.35 26.01

Btu/h 25,000 38,750 51,250 63,750 76,250 88,750

Burner Pressure (Max) mbar 16.0 ±0.5 16.0 ±0.5 16.0 ±0.5 16.0 ±0.5 16.0 ±0.5 16.0 ±0.5

in wg 6.4 ±0.2 6.4 ±0.2 6.4 ±0.2 6.4 ±0.2 6.4 ±0.2 6.4 ±0.2

Burner Pressure (Min) mbar 8.0 ±0.5 10.0 ±0.5 11.5 ±0.5 11.5 ±0.5 12.1 ±0.5 11.5 ±0.5

in wg 3.2 ±0.2 4.0 ±0.2 4.4 ±0.2 4.4 ±0.2 4.8 ±0.2 4.4 ±0.2

Gas Rate CV 38mj/m31.04m3/h 1.39m3/h 1.74m3/h 2.08m3/h 2.43m3/h 2.78m3/h

(after 10 mins) 36.86ft3/h 49.0ft3/h 61.3ft3/h 73.5ft3/h 86.75ft3/h 98.1ft3/h

Lifting Weight kg 23.1 23.1 23.1 32.2 32.2 32.2

lbs 51 51 51 71 71 71

Water Content litres 1.1 1.1 1.1 1.6 1.6 1.6

pints 1.9 1.9 1.9 2.8 2.8 2.8

Outercase Height 600mm 600mm 600mm 600mm 600mm 600mm

Dimensions Width 350mm 350mm 350mm 462mm 462mm 462mm

Depth 287mm 287mm 287mm 287mm 287mm 287mm

Flue Terminal Diameter 100mm

Dimensions Depth 70mm

Static Head Max 30 metres (100 ft)

Min 1 metre (3.25 ft)

Connections Flow 22mm Cu tail

Return 22mm Cu elbow

Heat Exchanger Cast iron monobloc

Low Head Min 0.2m (8 in)

System Design fully pumped open vented and sealed systems

Gas Connection RC

/2(1/2in BSPT)

Electrical Supply 230V ~ 50Hz fused 5A - 90W

Controls boiler thermostat, intermittent pilot & electronic flame sensing,

timed pump over-run, frost protection thermostat

Internal Fuse 4AF 250V to BS4256 situated on control board

2.0 Technical Data

121

392

439

442

268

144144

107 Dia without internal fitting

117 Dia with internal fitting

Centre of Gas Connection

8 Slots 20 x 6

Layout of Fixing Points 30, 40 and 50 PF models

121

392

439

442

380

196196

107 Dia without internal fitting

117 Dia with internal fitting

Centre of Gas Connection

8 Slots 20 x 6

Layout of Fixing Points 60, 70 and 80 PF models

(4) 10

(8) 20

(16) 40

(24) 60

(12) 30

(20) 50

(28) 70

(32) 80

(36) 90

(40) 100

(44) 110

(48) 120

2 4 6 8 1012 1416 18 2022

Water Flow Rate litres / min

Pressure Drop mbar (in wg)

2426 28 30

(52) 130

(4) 10

(8) 20

(16) 40

(24) 60

(12) 30

(20) 50

(28) 70

(32) 80

(36) 90

(40) 100

(44) 110

(48) 120

2 4 6 8 1012 1416 18 2022

Water Flow Rate litres / min

Pressure Drop mbar (in wg)

2426 28 30

(52) 130

30, 40 and 50 PF models

60, 70 and 80 PF models

Templates

Hydraulic Resistance Charts

• This appliance is only intended for installation on a governed supply.

• PMS = 3 bar pressure class 2

• Max CH water pressure 3 bar

• Type C

12,C32, C52

• Nox class 2

• Appliance category I

2H - G20 - 20mbar

• Ref: 86/AU/588

• Burner Injector Sizes: 30=B12 40=B13 50=B14 60=B15 70=B30 80=B16

• This boiler is designed to operate at a maximum water temperature of 85° C.

61.3mm

Model Seasonal Efficiency

(SEDBUK) (%)

30 78.8

40 77.8

50 76.7

60 77.8

70 77.7

80 77.8

This value is used in the UK Government’s Standard

Assessment Procedure (SAP) for energy rating of

dwellings. The test data from which it has been

calculated have been certified by 0086.

SEDBUK Declaration For Solo 3 PF

All Models

121mm

Top of Outercase

3.0 System Details

Typical Systems Arrangement

Option A

Boiler

Pump

Air Vent

Radiator Circuit

Fully Pumped System

Air Vent

Radiator Circuit

Twin Zone

Valve System

Air Vent

Radiator Circuit

3 Port Divertor

Valve System

Option B

Radiator

Circuit

Option C

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Examples of systems which require a bypass are:-

a) A system controlled by non-electrical valves e.g. mechanical thermostatic control valves both on the radiators and the hot water circuit.

b) A system using twin zone valves (e.g. Honeywell 'S' Plan) (Fig. 3).

c) A system using a 3 port divertor valve (Fig. 4) does not normally require a bypass therefore this system is recommended. The exception to this is where thermostatic radiator valves are used and then a bypass is required.

NOTE: For ‘S’ Plan systems the bypass flow circuit must be situated between pump and zone valves as option A shows (Fig. 2).

The bypass circuit can be:-

a) For all boilers a minimum of 6 metres of 22mm copper pipe, (measured between the boiler flow and return connections). It should be fitted with a lock shield valve opened at least 1 full turn or a proprietary bypass valve set to give a minimum flow rate of 8 litres/min (1.8 gal/min) (Option C, Fig. 1 & Option A, Fig.2).

b) A radiator fitted with lock shield valves. The radiator output should be a minimum of 800 watts (2,700 Btu/h). Typically a convector type radiator with an area of 3750 cm

(4 sq ft) is adequate (Option B,

Fig. 1).

c) Any circuit that provides the same operating conditions as option A or option B (Figs. 1 & 2).

3.1 Water Circulating Systems

1. The appliance is suitable for use with open vent fully pumped systems and sealed systems where additional control protection is required.

The following conditions should be observed on all systems:

• The static head must not exceed 30m (100ft) of water.

• The boiler must not be used with a direct cylinder.

• The boiler is fitted with a timed pump overrun that

will operate for approximately 8 minutes.

• Drain cocks should be fitted to all system low points.

• All gas and water pipes and electrical wiring must be installed in a way which would not restrict the servicing of the boiler.

• Position isolating valves as close to circulating pump as possible.

Treatment of Water Circulating Systems

• All recirculatory water systems will be subject to corrosion unless an appropriate water treatment is applied. This means that the efficiency of the system will deteriorate as corrosion sludge accumulates within the system, risking damage to pump and valves, boiler noise and circulation problems.

• For optimum performance after installation this boiler and its associated central heating system must be flushed in accordance with the guidelines given in BS 7593:1992 “Treatment of water in domestic hot water central heating systems”.

• This must involve the use of a proprietary cleanser, such as BetzDearborn Sentinel X300 or X400, or Fernox Superfloc. Full instructions are supplied with the products, but for immediate information please contact BetzDearborn (0151 420

9563) or Fernox (01799 550 811) directly.

• For long term protection against corrosion and scale, after flushing it is recommended that an inhibitor such as BetzDearborn Sentinel X100, or Fernox MB-1 or Copal is dosed in accordance with the guidelines given in BS 7593:1992.

Failure to flush and add inhibitor to the system may invalidate the appliance warranty.

• It is important to check the inhibitor concentration after installation, system modification and at every service in accordance with the inhibitor manufacturer’s instructions. (Test kits are available from inhibitor stockists.)

• For information or advice regarding any of the above contact the Baxi Helpline.

3.2 Bypass Requirements

1. The boiler is fitted with a pump overrun device which allows the removal of residual heat from the boiler.

NOTE: The pump overrun will operate for approximately 8 minutes. The system design must therefore, always provide an open circuit for water to circulate between the boiler flow and return.

2. See information opposite “Examples of systems

which require a bypass are”.

3.0 System Details

3.3 Pipework

1. The sizes of flow and return pipes from the boiler should be determined by normal methods, according to the requirements of the system.

2. An 11 °C (20°F) drop in temperature across the system is recommended.

3. In systems using non-metallic pipework it is necessary to use copper pipe for the boiler Flow and Return. The copper must extend at least 1 metre from the boiler and include any branches (Fig. 4a). The copper pipe must not be insulated.

3.4 System Controls

1. For optimum operating conditions, the heating system into which the boiler is installed should include a control system.

2. Such a system will comprise of a timer control and separate room or cylinder thermostats as appropriate.

3. The boiler should be controlled so that it operates on demand only.

4. Operation of the system under control of the boiler thermostat only does not produce the best results.

5. A frost thermostat is fitted integrally to the appliance controls and will protect the boiler from frost damage by operating the burner when the water temperature in the boiler drops towards freezing point. The boiler will fire as necessary to maintain a temperature above freezing.

NOTE: The frost thermostat operates even if the boiler thermostat is in the OFF ('0') position and it is necessary therefore, if the system is drained, for the external electrical and gas supplies to be isolated. It is recommended that a label be affixed to the appliance to draw attention to the fact that the system has been drained.

3.5 Low Head Installation

For boilers up to 50,000 Btu/h output

1. Using a close coupled arrangement the minimum head is as shown in the diagrams (Figs. 5 & 6) subject to the following conditions:

a) The correct heat input. b) The pump being adjusted to give an 11

drop across the boiler. c) The pump must be fitted on the flow. d) The pump must be fitted in accordance with

the pump manufacturer's instructions. e) The open vent pipe must be taken up from a

tee in a horizontal section of the flow pipe.

Alternative Low Head Installation for all Solo 3 PF

(Fig. 7)

2. If less height is available then a combined vent and feed pipe may be connected. This must be a minimum of 22mm diameter. It is recommended that an air separator is fitted when using a combined feed and vent pipe.

Typical Low Head Installation

If Conditions Require, This System Possible

Alternative Low Head Installation

Boiler

500mm

45°

22mm Open Vent

1000mm

Min

150mm

Max

15mm Cold Feed

400mm

Min Head

Return

Pump

Flow

Boiler

500mm

45°

22mm Open Vent

400mm

Min Head

1000mm

Min

Automatic

Air Vent

15mm Cold Feed

150mm

Max

Return

Pump

Flow

Return

Pump

Flow

Boiler

200mm

Min

Air

Separator

22mm Feed & Vent Pipe

Fig. 5

Fig. 6

Fig. 7

Boiler

Flow

Return

Copper

0.5m

Copper

0.5m

Fig. 4a

3.0 System Details

3.6 Sealed Systems (Fig. 8)

1. SAFETY VALVE - A safety valve complying with the requirements of BS 6283 Part 1 must be fitted close to the boiler on the flow pipe by means of a horizontal or vertically upward connection with no intervening valve or restrictions and should be positioned to facilitate testing. The valve should be pre-set and non-adjustable to operate at a pressure of 3 bar (45 Ibf/in

). It must be arranged to discharge any water or steam through a pipe to a safe outlet position.

2. PRESSURE GAUGE - A pressure gauge of minimum range 0-4 bar (0-60 Ibf/in

) with a fill pressure indicator must be fitted to the system, preferably at the same point as the expansion vessel in an easily visible position.

3. EXPANSION VESSEL - An expansion vessel complying with the requirements of BS 4814 must be fitted to the system by means of a connection close to the inlet side of the circulating pump in accordance with the manufacturers instructions, the connecting pipe being unrestricted and not less than 15mm (

/2in) nominal size. The volume of the vessel should be suitable for the system water content and the nitrogen or air charge pressure should not be less than the system static head (See Table. 1).

Further details of sealed system design can be obtained from BS 5449 and the British Gas publication entitled 'Specifications for Domestic Wet Central Heating Systems'.

4. FILLING POINT - A filling point and an approved stop valve to BS 1010 must be fitted at low level and the method used for filling the system should be approved by the local water undertaking. For further details see BS 6798.

5. MAKE UP SYSTEM - A method of replacing water lost from the system should be provided either by means of a make up vessel of not more than 3 litres (5 pints) capacity, mounted above the highest point of the system, or by prepressurisation of the system.

6. VENTING - A method of venting the system during filling and commissioning must be provided by fitting automatic air vents or by venting manually.

7. HOT WATER STORAGE - The hot water storage vessel must be of the indirect coil type.

8. SYSTEM COMPONENTS - All components used in the system must be suitable for operation at 110°C (230°F) and at the pressure allowed by the safety valve.

Initial System Pressure (Bar)

Vessel Charge Pressure (Bar)

Multiply Total Water Content Of System By (Litres)

0.067

0.112

0.207

0.441

0.087

0.152

0.330

0.125

0.265

0.5

1.0

1.5

2.0

1.0

1.5

2.0

1.5

2.0

0.5

1.0

1.5

Example :-

Then :-

System Volume = 75 litres Vessel Charge Pressure = 1.0 bar Initial System Pressure = 1.5 bar 75 x 0.152 = 11.4 litres Expansion Vessel Volume

Method of determining minimum

value of expansion vessel volume for

sealed systems using Baxi Boilers

NOTE

Where a vessel of the calculated size is not obtainable

then the next available larger size should be used.

Safety

Valve

Pressure

Gauge

Pump

Filling

Point

Air

Vent

3 Litre Top Up Bottle (if required)

Radiator Circuit

Expansion Vessel

System Drains at Low Point

Max Boiler Flow

Temp = 82° C

Boiler

Fig. 8

Table. 1

4.0 Site Requirements

4.1 Location

1. The appliance may be fitted to any suitable wall with the flue passing through an outside wall and discharging to atmosphere in a position permitting satisfactory removal of combustion products and providing an adequate air supply. The appliance should be fitted within the building unless otherwise protected by a suitable enclosure ie. garage or outhouse. (The appliance may be fitted inside a cupboard. Cooling ventilation and insulation of the cupboard are not required, see section 4.5.)

2. If the appliance is fitted in a room containing a bath or shower reference must be made to the Current I.E.E. Wiring Regulations and Building Regulations. If the appliance is to be fitted into a building of timber frame construction then reference must be made to the Institute of Gas Engineers document UP7 - Guide for Gas Installations in Timber Framed Dwellings.

3. Recommendations for flues are given in BS 5440 Part 1.

4.2 Minimum Clearances (Fig. 9)

1. A flat vertical area is required for the installation of the boiler measuring as shown in the table below for each model.

2. These dimensions include the necessary clearances around the appliance for case removal, spanner access and air movement. Additional clearances may be required for the passage of pipes around local obstructions such as joists running parallel to the front face of the appliance.

3. If fitted inside a cupboard the clearance of 300mm shown is only necessary when the cupboard door is open. A clearance of 5mm (3/16in) is required when the door is closed.

4.3 Flue Position

1. For installations where the flue terminal is inaccessible from the outside, an internal fitting kit is available. This can be obtained free of charge from your local merchant.

2. The following guide lines indicate the general requirements for siting balanced flue terminals.

3. If the terminal is fitted within 1 metre (39in) of a plastic gutter, within 500mm (191/2in) of a painted eave or a painted gutter, an aluminium shield of at least 1 metre (39in) long should be fitted to the underside of the gutter or painted surface. An air space of 5mm (

/16in) should be left between shield

and gutter (Fig. 10).

4. If the terminal discharges onto a pathway or passageway, check that combustion products will not cause a nuisance and that the terminal will not obstruct the passageway.

5. If the outer surface of an outside wall is of combustible material, it should be protected by fitting the flue trim provided.

Fig. 9

Fig. 10

300mm for servicing

5mm during operation

5mm5mm

350mm (30,40,50 models)

600mm

50mm

100mm

462mm (60,70,80 models)

Aluminium

Shield

Model

Height Width mm (in) mm (in)

30 750 (291/2) 360 (141/8) 40 750 (291/2) 360 (141/8) 50 750 (291/2) 360 (141/8) 60 750 (291/2) 472 (185/8) 70 750 (291/2) 472 (185/8) 80 750 (291/2) 472 (185/8)

287mm

4.0 Site Requirements

4.3 Flue Position (Cont)

WARNING - The addition of anything that may

interfere with the normal operation of the appliance (e.g. FLUE DAMPERS, ECONOMISERS,etc.) without the express written permission of Baxi UK Limited could invalidate the appliance warranty and infringe the GAS SAFETY (Installation and Use) REGULATIONS. If a terminal is less than 2 metres (78

/4in) above a balcony, above ground or above a flat roof to which people have access then a suitable terminal guard must be provided.

6. Table 2 and Fig. 11 show the positioning of the flue terminal relative to buildings and other structures.

7. The dimensions of the flue terminal are shown on page 5.

4.4 Flue Dimensions

1. Flue extensions are available as optional extras for installations up to 3 metres (118

/8 in).

2. Vertical flue kits are available up to 4 metres in length. Vertical twin flue kits are available up to 15 metres in length.

IMPORTANT: Solo 3 30 PF models must not

be set at minimum input when installed with vertical flue systems.

3. The standard telscopic flue is suitable for use with rear flue lengths between 100mm (4in) and 500mm (19

/8in).

NOTE: Maximum flue length when flued to the left or right is

410mm (16in) - 30, 40, 50 PF 355mm (14in) - 60, 70, 80 PF

4. Where it is intended to pass the flue through a combustible wall or timber framed dwelling, reference should be made to the Institute of Gas Engineers document UP7 - Guide for Gas Installations in Timber Framed Dwellings.

5. If the flue is more than 1 metre (39 in) long, it is required that it is supported.

6. All above dimensions are taken from the

respective faces of the outer case.

Table. 2

Fig. 12

Fig. 11

Terminal Position with Minimum Distance (mm)

A Directly below an openable window or other

opening, e.g. an air brick. 300 B Below gutters. 25 C Below eaves, soil pipes or drain pipes. 75 D Below balconies or car port roof 200 E From vertical drain pipes and soil pipes. 75 F From internal or external corners. 25 G Above ground, roof or balcony level. 300 H From a surface facing a terminal. 600 I From a terminal facing a terminal. 1200 J Vertically from a terminal on the same wall. 1500 K Horizontally from a terminal on the same wall. 300 L For an opening in a car port (e.g. door, window)

into a dwelling. 1200

H,I

B,C

Likely flue positions requiring a flue terminal guard

Maximum lengths for side flues using the standard telescopic flue kit

410mm (30, 40, 50)

355mm (60, 70, 80) 355mm (60, 70, 80)

4.0 Site Requirements

4.5 Ventilation of Compartments

1. Where the appliance is installed in a cupboard or compartment, no air vents are required.

NOTE: The ventilation label on the front of

the outer case MUST NOT BE REMOVED when the appliance is installed in a compartment or cupboard.

2. B.S. 5440 refers to room sealed appliances installed in compartments. The Solo 3 PF will run sufficiently cool without ventilation.

4.6 Gas Supply (Fig. 13)

1. The gas installation should be in accordance with BS 6891.

2. The connection of the appliance is a RC

/2(1/

in BSPT internal) located at the rear of the gas cock.

3. Ensure that the pipework from the meter to the appliance is of adequate size. Do not use

pipes of a smaller diameter than the appliance gas connection.

4.7 Electrical Supply

External wiring must be correctly earthed, polarized and in accordance with CURRENT I.E.E. WIRING REGULATIONS.

The mains supply is 230V ~ 50Hz fused at 5A.

NOTE: The method of connection to the electricity supply must facilitate complete electrical isolation of the appliance.

Connection may be made via a fused doublepole isolator with a contact separation of a least 3mm in all poles and serving the appliance and system controls only.

Fig. 13

4.0 Site Requirement

4.8 Flue Options

1. The Baxi Solo 3 PF can be fitted with flue systems as illustrated.

2, The standard flue is suitable only for horizontal applications.

3. Maximum permissible equivalent flue lengths are:-

Horizontal 3.0 metres Vertical 4.0 metres Vertical (Twin) 20.0 metres

4. Any additional “in line” bends in the flue system must be taken into consideration. Their equivalent lengths are:-

Concentric Pipes:

45° bend 0.5 metres 90° bend 1.0 metres

Twin Flue Pipes

Air Duct Flue Duct 45° bend 1.3 metres 3.3 metres 90° bend 4.8 metres 12.0 metres

5. The illustrations opposite show examples of maximum equivalent lengths.

6. Full details of part numbers and descriptions of all optional flue components and kits can be found in Baxi Gas Central Heating Boilers Installers’ Guide.

7. Instructions for guidance and fitting are included in each kit.

IMPORTANT: Solo 3 30 PF models must not be set at minimum input when installed with vertical flue systems.

Horizontal Flues

Vertical Flues

Vertical Flues (Twin Pipe)

Maximum Length = 2m inc. 2 x 45° bends

Maximum Length = 21m inc. 4 x 45° bends

Maximum Length = 2m inc. 2 x 90° bends

5.0 Installation

5.1 Initial Preparation

1. Unpack contents of carton.

2. Remove the lower door panel from the outer case. Remove the 2 screws holding the outer case to the combustion box.

3. Place the ready assembled outer case in a safe place until required.

4. Release the R clip from the top latch securing the combustion box to the back plate and release both latches (Fig. 14).

5. Lift and remove the combustion box from the back plate (Fig. 15). Place the combustion box on its back.

IMPORTANT - When installing a Solo 3 with a rear flue see section 5.2 before continuing the installation.

6. Proceed to the relevant section for flueing the appliance either to the Rear, Left, Right or Vertically.

NOTE: For Vertical flueing or flue lengths greater than standard, the relevant optional extra kits must be obtained and their instructions followed.

Fig. 14

Fig. 15

5.0 Installation

5.2 Fan Outlet Restrictor

(30, 40, 50, 60, 70 and 80)

Rear Flue only up to 500mm (195/8in)

1. Release the four latches holding the combustion box door (Fig 18). Remove the combustion box door by pulling forward (Fig. 16).

2. Release the 5-pin electrical plug connecting the pressure switch and fan (Fig. 17). Withdraw the fan assembly by pulling forwards from the top edge (Fig. 16).

3. Take the sheetmetal restrictor (supplied in the kit of parts), check that the number stamped on the restrictor matches the appliance (e.g. 50 stamped on the restrictor is for 50 PF appliance)

4. Fit the restrictor to the fan outlet flange, bending the 3 lugs equally ensuring the restrictor seals against the fan outlet flange (Fig. 19).

5. Re-assemble the fan assembly and combustion box door ensuring that the flexible tubes from the fan unit to the pressure switch are routed correctly and that they are not kinked or flattened (Fig. 19a).

Fan Outlet Flange

Fan Outlet Restrictor

Fig. 17

Fig. 18

Fig. 16

Fig. 19

Flexible Tubes

Fig. 19a

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