Baxi Solo HE IE Series Installation & Servicing Instructions Manual

Wall mounted powered flue condensing boilers gas fired central heating units

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Installation & Servicing Instructions

Solo HE IE Range

Wall Mounted Powered Flue Condensing Boilers Gas Fired Central Heating Units

These instructions include the Commissioning Checklist and should be left with the user for safe keeping.

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Natural Gas

Baxi Solo 12 HE IE

Baxi Solo 15 HE IE

Baxi Solo 18 HE IE

Baxi Solo 24 HE IE

Baxi Solo 30 HE IE

retrieval system of any nature (including in any database), in each case whether electronic, mechanical, recording or otherwise, without the prior written

permission of the copyright owner, except for permitted fair dealing under Copyrights, Designs and Patents Act 1988.

Applications for the copyright owner's permission to reproduce or make other use of any part of this publication should be made, giving details of the proposed

use, to the following address:

The Company Secretary, Baxi Heating UK Ltd,

Brooks House, Coventry Road, Warwick. CV34 4LL

Full acknowledgement of author and source must be given.

WARNING: Any person who does any unauthorised act in relation to a copyright work may be liable to criminal prosecution and civil claims for damages.

Comp No 5133413 - Iss 6 - 12/12

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Summary of Contents for Baxi Solo HE IE Series

Page 1 Baxi Solo 30 HE IE Baxi Heating UK Ltd 2012 All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, or stored in any retrieval system of any nature (including in any database), in each case whether electronic, mechanical, recording or otherwise, without the prior written permission of the copyright owner, except for permitted fair dealing under Copyrights, Designs and Patents Act 1988.
Page 2 page 3 Legislation This company declare that no substances harmful to health are contained in the appliance or used during appliance manufacture. The appliance is suitable only for installation in IE and should be installed in accordance with the rules in force, and only used in a suitably ventilated location.
Page 3 1. The Baxi Solo HE IE range are gas fired room sealed fan assisted condensing central heating boilers. 2. The maximum output of the Baxi Solo 12 HE IE is 40,330 Btu/hr, 15 HE IE is 52,000 Btu/hr, 18 HE IE is 60,770 Btu/hr, 24 HE IE is 75,000 Btu/hr. The...
Page 4 Fig. 1 Fig. 2 page 7 2.0 General Layout 2.1 Layout (Figs. 3, 4, & 6) 1. Wall Plate 2. Flue Elbow 3. Heat Exchanger 4. Burner 5. Air Box 6. Fan Protection Thermostat 7. Fan Assembly 8. Condensate Trap 9.
Page 5 16. Flow Switch (dry fire protection) Fig. 3, Fig. 4, Fig. 5 & Fig. 6 page 8 3.0 Appliance Operation 1. Switched Live On: When the switched live switches on if the flow temperature is less than the set point then pump overrun occurs. When the switched live switches on if the flow temperature is greater than the set point then pump overrun occurs.
Page 6 2. Pump On: The pump is on while the fan, spark generator and gas valve are off. After 10 seconds if the flow switch has made then fan pre-purge occurs. After 10 seconds if the flow switch has not made then anticycle occurs. 3.
Page 8 page 9 4.0 Technical Data Appliance Type Appliance Category CAT I 2H Heat Input (Q)(Gross) 12 model 13.34 10.2 Btu/hr 45,518 34,840 15 model 16.88 10.2 Btu/hr 57,600 34,840 18 model 20.18 10.2 Btu/hr 68,850 34,840 24 model 24.50 10.2 Btu/hr 83,600 34,840...
Page 9 Connections in BSPT Gas Supply Central Heating Flow 22mm* Central Heating Return 22mm* Condensate Drain 1 in BSP * 2 x 22mm to 3/4" couplings are provided in the boiler fittings pack Outercase Dimensions Overall Height Inc Flue Elbow 750mm Casing Height 600mm Casing Width...
Page 10 page 10 5.0 Dimensions and Fixing DIMENSIONS A 600mm B 298mm C 390mm D 125mm Ø Min. E 150mm F 96mm The fall provided by the elbow is to allow condensate to run back to the boiler, for disposal through the condensate discharge pipe.
Page 11 Position isolating valves as close to circulating pump as possible. It is recommended that the return pipe is fitted with an automatic air vent as close to the boiler as is practical. 6.2 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.
Page 12 Fig. 11 Fig. 12 6.5 Pump 1. Providing that the cold feed and open vent pipe are positioned correctly (e.g. the system is not prone to pumping over, air entrainment etc.) the pump may be fitted on the primary return pipe. page 13 6.6 System Controls This boiler does not require a bypass.
Page 13 Y Plan, Room Thermostat System, CH Interlocked By Room Thermostat At least the Radiator(s) near the Room Thermostat not TRV'd Pump run from Switched Live By-pass permitted but not required for Part L1 compliance S Plan, Room Thermostat System, CH Interlocked By Room Thermostat At least the iator(s) near the Room Thermostat not TRV'd Pump run from Switched Live By-pass permitted but not required for Part L1 compliance...
Page 14 Y Plan, Fully TRV’d System, CH Interlocked By Boiler Flow Switch Room Thermostat should not be fitted Pump must be run from Boiler P/F connection for Part L1 compliance By-pass not permitted (must be valved off) for Part L1 compliance S Plan, Fully TRV’d System, CH Interlocked By Boiler Flow Switch Room Thermostat should not be fitted Pump must be run from Boiler P/F connection for Part L1 compliance...
Page 15 7. HOT WATER STORAGE - The hot water storage vessel must be of the indirect coil type. 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. Fig. 13 Method of determining minimum valve of expansion vessel volume for sealed systems using Baxi Boilers Vessel Charge Initial System...
Page 16 7.0 Site Requirements 7.1 Location NOTE: Due to the high efficiency of the boiler a plume of water vapour will be discharged from the flue. This should be taken into account when siting the flue terminal. 1. The boiler may be fitted to any suitable wall with the flue passing through an outside wall or roof and discharging to atmosphere in a position permitting satisfactory removal of combustion products and providing an adequate air supply.
Page 17 7.3 Clearances (Figs. 15 &16) 1. A flat vertical area is required for the installation of the boiler. 2. These dimensions include the necessary clearances around the boiler for case removal, spanner access and air movement. Additional clearances may be required for the passage of pipes around local obstructions such as joists running parallel to the front face of the boiler. 3.
Page 18 1. External wiring must be correctly earthed, polarised and in accordance with relevant regulations/rules. In IE reference should be made to the current edition of ETCI rules. 2. The mains supply is 230V ~ 50Hz fused at 3A. NOTE: "The method of connection to the electricity supply must facilitate complete electrical isolation of the appliance".
Page 19 ii) External termination via internal discharge branch e.g sink waste - downstream* page 18 11. When discharging condensate into a soil stack or waste pipe the effects of existing plumbing must be considered. If soil pipes or waste pipes are subjected to internal pressure fluctuations when WC's are flushed or sinks emptied then back-pressure may force water out of the boiler trap and cause appliance lockout.
Page 20 page 19 12. A boiler discharge pump is available, 'MULTIFIT' part no. 720648301. This pump will dispose of both condensate & high temperature water from the relief valve. It has a maximum head of 5 metres. Follow the instructions supplied with the pump. 13.
Page 21 6. * Reduction to the boundary is possible down to 25mm but the flue deflector kit (part no. 248167) must be fitted. 7. If required a suitable terminal guard is available from Baxi for use with the flue deflector. 8. For fitting under low soffits and eaves it is acceptable for the flue to project up to 500mm from the face of the wall to the inside of the air intake. This can be painted if required using a suitable external paint.
Page 22 Directly below an opening, air brick, opening windows, etc. Above an opening, air brick, opening window etc. Horizontally to an opening, air brick, opening window etc. Below gutters, soil pipes or drain pipes. 25 (75) Below eaves. 25 (200) Below balconies or car port roof. 25 (200) From a vertical drain pipe or soil pipe.
Page 23 Fig. 17c page 21 8.0 Flue Options 8.1 Horizontal Flue Systems Concentric The maximum equivalent lengths are 4m (horizontal) or (vertical). Their lengths exclude the standard elbow and flue/terminal assembly (horizontal) and terminal assembly (vertical). Any additional "in line" bends in the flue system must be taken into consideration. Their equivalent lengths are: Concentric Pipes: 45°...
Page 24 page 22 8.2 Twin & Vertical Flue Systems Concentric The maximum equivalent lengths are 4m (vertical). Their lengths exclude the standard elbow and terminal assembly (vertical). Twin Flue The total maximum equivalent flue length is 150m NOTE: Each 1m of flue duct should be calculated as 2m. Any additional "in line" bends in the flue system must be taken into consideration. Their equivalent lengths are: Concentric Pipes: 135°...
Page 25 Total Equivalent Length = A+B+C+1x90° Bend All vertical and angled runs must be included, measured from the boiler adaptor (point X) to the joint with the flue terminal (point Y). One 91.5° bend or two 135° bends can be included without reduction of the flue length. If further elbows are required the flue length must be reduced by the following amounts:- 1 metre for each 91.5°...
Page 26 Equivalent Sub total Length Value fittings/pipes 1m extension 5.0m 135°bend 1.3m 2.6m 91.5°bend 4.8m 9.6m Equivalent Length Air Duct = 17.2m FLUE DUCT Equivalent Sub total Length Value fittings/pipes 1m extension 10.0m 135°bend 2.6m 5.2m 91.5°bend 9.6m 19.2m Equivalent Length Flue Duct = 34.4m page 23 8.3 Flue Accessories Accessory...
Page 27 page 24 8.4 For Vertical Flue Systems 1. Undo the screws securing the blanking plate to the boiler top panel. Discard the plate. 2. Fix the vertical adaptor and gasket to the top panel with the previously removed screws.
Page 28 8.5 For Twin Flue Systems 1. Undo the screws securing the blanking plate to the boiler top panel. Discard the plate. 2. Fix both the air and flue adaptors with their gaskets onto the boiler top panel. Secure with screws. For Vertical Flues For Twin Flues page 25...
Page 29 8.7 Flue Dimensions The standard horizontal flue kit allows for flue lengths between 270mm (10 ") and 800mm (32") from elbow to terminal (Fig. 18). The maximum permissible equivalent flue length is: 4 metres. NOTE: Each additional 45° of flue bend will account for an equivalent flue length of 0.5m. e.g..
Page 30 Fig. 19 8.9 Flue Deflector (Fig. 18a) 1. If required, push the flue deflector over the terminal end and rotate to the optimum angle for deflecting plume. Secure the deflector to the terminal with screws provided. page 26 9.0 Plume Displacement 9.1 Plume Displacement Kit (P.D.K.) Kit No 5121371 Content of kit...
Page 31 Fig. C Fig. A Fig. B page 27 9.2 Determining Permissible Lengths - P.D.K.
Page 32 In the graph the solid line diagonal represents the relationship between the concentric flue assembly (and any extensions) and the 70Ø exhaust (and any extensions or additional bends). Example 1 - Not Permissible If, for instance, a concentric length of 3.25 metres was required and the 70Ø exhaust needed to be 10 metres the graph shows that this combination would NOT be permissible as the intersection point would be above the solid diagonal line.
Page 33 Example 3 Flue Lengths - OK Fig. D Flue Length - Worked Example Baxi Solo 30 HE IE Fig. D Above an additional 93° elbow and pair of 45° elbows have been included in the 70Ø exhaust. Also 3 straight extension pieces have been used.
Page 34 1. Cut a hole in the external wall which the horizontal concentric flue assembly will pass through. 2. When completed the terminal must be at least 2 metres above ground level (Fig. 3. Measure and cut to size the concentric assembly and any extensions that are being used. 4.
Page 35 Fig. G page 29 16. For aesthetic purposes it is permissible to route the 70Ø exhaust in an enclosed box, but the air inlet and plume outlet MUST remain in free air. 17. It is also possible to separate the plume outlet from the 93° elbow to allow the flue to be installed as shown in Fig.
Page 36 Fig. J page 30 10.0 Installation Check Site Requirements (section 7.0) before commencing. 10.1 Initial Preparation The gas supply, gas type and pressure must be checked for suitability before connection (see Section 7.4). 1. Cut the banding and remove the fixing template, wall plate and literature pack (Fig.
Page 37 Fig. 20 Fig. 21 Fig. 22 page 31 10.2 Preparing The Boiler (Figs. 22a & 23) 1. Remove the outer carton and packaging. 2. Lift the outercase upwards and remove. 3. Remove the internal packaging.
Page 38 Fig. 22a Fig. 23 page 32 10.3 Fitting The Boiler (Fig. 1. Remove the screw and retaining bracket from the wall plate spring clip. 2. Offer up the boiler to the wall plate using the lifting points shown in Fig. 24 and locate the rear bottom edge onto the self locating support at the base of the wall plate.
Page 39 NOTE: On Solo 30 HE models 1 " pipe (or metric equivalent) should be used to connect to the boiler flow and return using suitable reducing fittings. 4. If the installation requires that the system pipework originates from the bottom of the boiler, then the flow and return pipes will need cutting, as they terminate upwards.
Page 40 Fig. 25 & Fig. 25a page 33 10.6 Making the Gas Connection 1. Connect the gas supply to the G1/2 (1/2in BSPT Internal) gas tap. This is located on the lower right side of the boiler, access by hinging down the PCB housing (see Fig.
Page 41 The flue tubes are fixed together. Cut through both tubes whilst resting the flue on the semi-circular packing pieces. Deburr both tube ends. IMPORTANT: Check all measurements before cutting. NOTE: When cutting ensure the cut does not interfere with the inner flue support bracket (Fig.
Page 42 13. If necessary fit a terminal guard (see Section 8.8). VERTICAL FLUEING 1. Only a flue approved with the Baxi Solo HE IE range can be used. Fig. 28 Fig. 29, Fig. 30 & Fig. 29a page 35 10.8 Making The Electrical Connections...
Page 43 1. The electrical connections are on the right hand side of the unit. 2. The Baxi Solo 30 HE IE is factory set to give a maximum output of 22.0 kW (75,000 Btu/hr). The Control PCB jumper positions are as follows:...
Page 44 Fig. 31, Fig. 32 & Fig. 33 page 36 11.0 Electrical 11.1 Schematic Wiring Diagram...
Page 45 Key To Wiring Colours Blue - Red Black - Green White - Green/Yellow Brown - Opaque Grey - Yellow page 37 11.2 Illustrated Wiring Diagram...
Page 46 Wiring Key - Blue bk - Black br - Brown - Red - White g/y - Green/Yellow - Green gy - Grey op - Opaque - Yellow page 38 12.0 Commissioning the Boiler 12.1 Commissioning the Boiler WARNING: The PCB Control and Fan Assembly are 325 Vdc. Isolate at supply before access.
Page 47 The 30 HE input is factory set at 24.5kW and can be altered to 33.76kW - see section 10.8. No adjustment of the gas valve is permissible. IMPORTANT: The combustion for this appliance has been checked, adjusted and preset at the factory for operation on the gas type specified on the appliance data plate. No measurement of the combustion is necessary.
Page 48 Fig. 34, Fig. 35 & Fig. 36 page 39 12.2 Check the Operational (Working) Gas Inlet Pressure 1. Ensure that all controls are calling for heat and maximum load is applied to the system. 2. With the boiler operating in the maximum rate condition check that the operational (working) gas pressure at the inlet gas pressure test point is in accordance with B.S.
Page 49 4. With any other appliances & pilot lights turned OFF the gas rate can be measured. It should be as shown in Section 4.0 Technical Data. 5. Carefully read and complete all sections of the Commissioning Checklist at the rear of this publication that are relevant to the boiler and installation. These details will be required in the event of any warranty work.
Page 50 Fig. 37 Fig. 38 page 41 14.0 Servicing the Boiler 14.1 Annual Servicing 1. For reasons of safety and economy, it is recommended that the boiler is serviced annually. Servicing must be performed by a competent person in accordance with B.S. 7967-4. 2.
Page 51 rate as described in 12.2.4. The combustion performance as described in "Check the Combustion Performance" (14.1. 4 to 14.1.6 below). 3. Competence to carry out Checking Combustion Performance B.S. 6798 "Specification for Installation & Maintenance of Gas Fired Boilers not exceeding 70kW" advises that:- The person carrying out a combustion measurement should have been assessed as competent in the use of a flue gas analyser and the interpretation of the results.
Page 52 Fig. 39 Fig. 41 page 43 11. To clean the heat exchanger and burner proceed as follows: a) Disconnect the electrical leads to the fan component protection sensor (Fig. 42). b) Loosen the screw retaining the gas injector pipe at the venturi (Fig.
Page 53 Fig. 41a, Fig. 42 & Fig. 43 Fig. 44 page 44...
Page 54 15.0 Changing Components 15.1 Changing Components IMPORTANT: When changing components ensure that both the gas and electrical supplies to the boiler are isolated before any work is started. "The boiler cannot be switched off at the boiler, therefore it is important to isolate the electrical supply at the mains fuse." Hazardous materials are not used in the construction of these products, however reasonable care during service is recommended.
Page 55 Fig. 46 page 45 15.3 Flowswitch (Fig. 1. Drain the boiler (see Section 15.1 paragraph 2 & 3). 2. Remove the two screws on the support bracket. 3. Remove the clip securing the flow pipe to the flowswitch. 4. Disconnect the inline electrical connection. 5.
Page 56 Fig. 48 & Fig. 49 15.4 PCB (Figs. 48 & 49) WARNING: The PCB Control and Fan Assembly are 325 Vdc. Isolate at supply before access. 1. Pull the control knob off the spindle and remove the plastic button cover. Refit them onto the new PCB (Fig.
Page 57 WARNING: The PCB Control and Fan Assembly are 325 Vdc. Isolate at supply before access. 1. Loosen the screw holding the injector pipe into the venturi. 2. Remove the electrical connections to the fan and protection sensor on the fan. 3.
Page 58 Fig. 50, Fig. 51 & Fig. 52 page 47 The removal of the fan is necessary to enable the changing of the injector pipe, condensate trap and gas valve (see section 15.6). 15.7 Injector Pipe (Fig. 1. Remove the injector pipe by pulling out from the "O" ring joint in the gas valve. 2.
Page 59 Fig. 53 Fig. 54 page 48 The burner and heat exchanger can be changed after removal of the combustion box door. To change the heat exchanger, the fan and burner must be removed first (see section 15.6 and 15.10). 1. Remove the combustion box door by removing the four securing screws (Fig.
Page 60 Fig. 55, Fig. 56, Fig. 57 & Fig. 59 page 49 15.12 Heat Exchanger Lower Insulation Pad (Fig.
Page 61 1. Remove all components in the base of the airbox. 2. Remove the burner (see section 15.10). 3. Remove the four bolts securing the combustion box base. 4. Remove the combustion box base. 5. Pull the central insulation panel down from the centre of the heat exchanger and remove the lower insulation pad. 6.
Page 62 Burner Assy 5107430 E06 097 Heat Exchanger Assy 242497 Control Knob 5109996 page 51 17.0 Fault Finding...
Page 63 NOTE: The fan is supplied with 325 Vdc. Fan Fault Finding should only be carried out after the boiler has been electrically isolated. General Fault Finding should only be carried out by someone who is appropriately qualified. page 52 ELECTRICAL SUPPLY...
Page 64 page 53 DRY-FIRE...
Page 65 page 54 IGNITION LOCKOUT...
Page 66 page 55 OVERHEAT LOCKOUT...
Page 67 page 56 FAN LOCKOUT NOTE: The fan is supplied with 325 Vdc. Fan Fault Finding should only be carried out after the boiler has been electrically isolated.
Page 68 THERMISTOR page 57 GAS BOILER COMMISSIONING CHECKLIST...
Page 69 page 58 SERVICE INTERVAL RECORD...
Page 70 page 59 Contact us For general enquiries contact branches nationwide For technical advice please contact 056 7720 023 For in warranty service contact 090 6424 062...
Page 71 All goods are sold subject to our standard Conditions of Sale which are available on request. BAXI A Trading Division of Baxi Heating UK Ltd (3879156) Brooks House, Coventry Road, Warwick. CV34 4LL Website www.baxi.co.uk Comp No 5133413 - Iss 6 - 12/12 ©...

This manual is also suitable for:

Solo 12 he ie Solo 15 he ie Solo 18 he ie Solo 24 he ie Solo 30 he ie