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Natural Gas Baxi Solo 2 60 RS G.C.No. 41 077 79 Baxi Solo 2 50 RS G.C.No. 41 077 78 Baxi Solo 2 40 RS G.C.No. 41 077 77 Baxi Solo 2 30 RS G.C.No.
Baxi UK Limited is one of the leading manufacturers of domestic heating products in the U.K. 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.
CONTENTS Introduction Technical Data System Details (and By-pass Requirements) Site Requirement Installation Commissioning the Appliance Fitting the Outer Case Overheat Cut-Off Device Annual Servicing Changing Components Fault Finding Short Parts List 4 PAGE 5 PAGE 6 - 7 PAGE 8 - 11 Water Circulating Systems System Controls Pipework Fully Pumped, Open Vented Systems Low Head Installation Sealed Systems Gravity Systems Hydraulic Charts PAGE 12 - 14 Location Clearances Flue Position Flue Dimensions Ve
INTRODUCTION Description The Baxi Solo 2 RS is a wall mounted gas fired room sealed natural draught central heating boiler with range rated outputs as shown in the table below. Model 30 40 50 60 HEAT OUTPUT Min Max 6.15kW (21,000 Btu/h) 8.79kW (30,000 Btu/h) 9.09kW (31,000 Btu/h) 11.72kW (40,000 Btu/h) 12.02kW (41,000 Btu/h) 14.65kW (50,000 Btu/h) 14.95kW (51,000 Btu/h) 17.58kW (60,000 Btu/h) Each appliance is preset at its MAXIMUM heat input rating and is designed for use on NATURAL GAS only.
TECHNICAL DATA 30 RS Max Min Lifting Weight 37.3 kg (82.1 lbs) kW 11.00 7.69 Water Content 2.1 litres (0.46 gals) Btu/h 37,500 26,250 Static Head Max Min metres 30 1 feet 100 3.25 Heat Input Heat Output Max Min kW 8.79 6.15 Btu/h 30,000 21,000 Burner Pressure mbar in wg Max Min 15.4 + 0.5 6.2 + 0.2 8.0 + 0.5 3.2 + 0.2 Low Head Min 0.
50 RS Max Min Lifting Weight 37.3 kg (82.1 lbs) kW 18.32 15.02 Water Content 2.1 litres (0.46 gals) Btu/h 62,500 51,250 Static Head Max Min metres 30 1 feet 100 3.25 Heat Input Heat Output Max Min kW 14.65 12.02 Btu/h 50,000 41,000 Burner Pressure mbar in wg Max Min 16.3 + 0.5 6.5 + 0.2 11.2 + 0.5 4.5 + 0.2 Low Head Min 0.
SYSTEM DETAILS (and By-pass Requirements) Water Circulating Systems Examples of Open Circuits The appliance is suitable for use with fully pumped open vented systems (small bore and micro-bore), gravity domestic hot water with pumped central heating systems and sealed systems. The following conditions should be observed on all systems: The static head must not exceed 30m (100ft) of water. The boiler must only be used with an indirect cylinder.
Copper 0.5m Copper 0.5m Flow Boiler System Controls Return Copper 1m For optimum operating conditions, the heating system into which the boiler is installed should include a control system. Copper Pipe In Non-Metallic System Such a system will comprise of timer control and a separate room or cylinder thermostat as appropriate. mm 500 22mm Open Vent 45o 1000mm Min The boiler should be controlled so that it operates on demand only.
Sealed Systems SAFETY VALVE A safety valve complying with the requirements of BS 6750 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/in2). It must be arranged to discharge any water or steam through a pipe to a safe outlet position.
Gravity Systems When the boiler is to be installed to an existing or new gravity domestic hot water and pumped central heating system, the following considerations should be given to the design of the gravity domestic hot water flow and return pipes. The minimum circulating head should not be less than 1m (3ft) with a maximum horizontal run of 3m (10ft) when using 28mm pipes. Smaller pipe sizes and longer horizontal runs are acceptable with suitably increased circulating heads.
SITE REQUIREMENTS Location 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 other-wise protected by a suitable enclosure ie. garage or outhouse.
WARNING If a terminal is less than 2 metres (783/4 in) above a balcony, above ground or above a flat roof to which people have access then a suitable terminal guard must be provided. B,C K J G G D D F H,I L A D F A E G Likely positions requiring a flue terminal guard Terminal Position with Minimum Distance Directly below an openable window or other opening, e.g. an air brick. B Below gutters, soil pipes or drain pipes. C Below eaves.
Ventilation of Compartments Where the appliance is installed in a cupboard or compartment, air vents are required (for cooling purposes) in the cupboard or compartment at high and low level which may communicate with a room or direct to outside air. Detailed recommendations for air supply are given in BS 5440: Part 2. An existing cupboard or compartment may be used, provided that it is modified for the purpose.
INSTALLATION Initial Preparation Unpack the contents of carton leaving the combustion box and mounting plate assembled on the base tray. Place the outer case in a safe place until required. Detach the fixing template from the packaging. Remove the two wing nuts securing the combustion box to the mounting plate. Disengage the spring latch and lift the combustion box away from the airbox. Place the combustion box on its back.
Flue Preparation Unpack flue duct, flue trim and air duct. Flue Trim Flue Duct Air Duct Wall Thickness Measure overall wall thickness. If this is between 280mm (11in) and 355mm (14in), use flue as supplied without alteration. For wall thickness between 102mm (4in) and 280mm (11in), air duct and flue duct are required to be shortened. Using the indication on the duct, mark accordingly to table below.
Fitting the Wall Mounting Plate Secure plate to wall using 63mm (21/2 in) screws. From outside building, pass air duct through wall opening. The two tabs should be positioned at the bottom. Inner Duct Air Duct Slide air duct over inner duct until tabs contact wall surface. Tab Ensure air duct is horizontal and square to wall face. Using sealing tape supplied make good the joint on inside of the two ducts. Sealing Tape Make good with cement mortar between the outside wall and duct.
Fitting the Flue Duct Fit flue trim over air duct. Sealing Tape Flue Trim Air Duct Tabs Slide flue duct inside air duct to engage flue duct on boiler, noting correct positioning as labelled. Label Flue Duct Air Duct Secure flue duct, flue trim to air duct with four screws provided in the kit. Remove label from duct.
Terminal Guard When codes of practice dictate the use of terminal guards, they can be obtained from most plumbers and builders merchants nationwide. When ordering a terminal guard, quote the appliance model number. The guard manufacturers listed below can be contacted for terminal sizes and guard model numbers. Quinnell, Barrett & Quinnell, 884 Old Kent Road, London, SE15 1NL. Tel: 071 639 1357. Tower Flue Components Ltd., Tower House, Vale Rise, Tonbridge, Kent.
Fitting the Boiler When the boiler is to be used on a system with gravity D.H.W. it is necessary to disconnect the overheat thermostat by removing the wire with the black sleeve and attaching it to the wire with the red sleeve as shown. The overheat thermostat is now by-passed and will allow the appliance to perform satisfactorily on gravity circulation. NOTE: Even though the overheat thermostat is not operational, it must not be removed from the pocket in the heat exchanger except during servicing.
Water Connections The boiler is supplied ready for fully pumped and sealed systems. The boiler has 2 connection tails to accept capillary or compression fittings:22mm tail marked F for Flow. 22mm tail marked R for Return. Pipe Routes Pipework should be routed to the back plate. Pipes may also be routed to drop down within outer case. Spaces are available at both sides. If pipes are routed to drop down A within the outercase vents are required.
Gravity Hot Water System Injector Washer For gravity domestic hot water and pumped central heating system, connect tee supplied in kit to the tail marked R. Ensure that the injector washer is positioned correctly as shown. Failure to fit the injector washer will result in reverse circulation in the D.H.W. circuit. The gravity circuit should be installed in 28mm diameter copper pipe as shown. Ensure that pipes run perpendicular to the wall to allow fitting of the outercase.
KEY br b g/y or r w - brown blue green/yellow orange red white Electrical Supply The electrical supply for this Solo 2 RS depends on the design of the central heating system i.e. Gravity DHW and Pumped Central Heating - 3 core cable. Fully Pumped, Open Vented with rising primaries - 4 core cable. However, 3 core cable can be used if the timed pump overrun and overheat thermostat are disconnected.
Loosen the securing screw sufficiently for the electrical cover to be removed from the thermostat box. 75 br Bare back the input cable to the dimensions shown. g/y b bk 35 Fit the electrical input cable as follows: Connect the switched live to the terminal marked S/L. Connect the permanent live to the terminal marked P/L. Connect the supply neutral to the terminal marked N and the supply earth to the terminal marked . S/L N P/L L N Pump Secure the cable in place with the right hand cable clamp.
FOR GRAVITY D.H.W. AND PUMPED C. H. When the boiler is to be used on a system with gravity D.H.W. ensure that the overheat thermostat has been disconnected as shown. The overheat thermostat is now by-passed and will allow the appliance to perform satisfactorily on gravity circulation. NOTE: Even though the overheat thermostat is not operational, it must not be removed from the pocket in the heat exchanger.
COMMISSIONING THE APPLIANCE Fill the whole system in accordance with BS 7593: 1992 (See Treatment of Water Circulating Systems in the System Details section). Check for water leaks. Purge air from supply pipe at gas service tap (BS 6891). Turn gas service tap anticlockwise to ON position. Check for gas soundness up to gas valve. Ensure that all external controls, e.g. room thermostat, timer, etc. are calling for heat. Fit thermostat control knob (packed with the contents in plastic bag).
Turn on main electricity supply. Light burner by turning thermostat knob to high setting (fully clockwise). Check pressure after 10 minutes. Adjust if necessary to the relevant figures for the corresponding model shown in the chart below. To set the main burner pressure adjust the throttle as shown. To increase the burner pressure, turn the adjustment screw in either direction until the required pressure is obtained. Set any timer control, room thermostats etc to the customer's specific requirements.
FITTING THE OUTER CASE 1 2 Remove the lower door panel from the ready assembled outer case by following the sequence of diagrams. 3 If the appliance is to be fitted on a gravity system remove the two infill panels. Offer the outer case up to the hooks on the top of the combustion box ensuring that it engages. Secure the outer case using the two screws and washers that are supplied. Replace the lower front door panel. Instruct the user in the operation of the boiler.
1 OVERHEAT CUT-OFF DEVICE Operation 2 The overheat cut-off device is of the manual reset type and therefore it is important that the user knows how to reset the control should it ever cut out. Remove the lower door panel by following the sequence of diagrams. 3 Reach into the outer case and locate the reset button adjacent to the control box. Press the button to reset the overheat thermostat. The boiler must be reignited manually.
1 ANNUAL SERVICING 2 Dismantling the Boiler To ensure the continued safe and efficient operation of the appliance, it is recommended that it is checked and serviced as necessary at regular intervals. 3 The frequency of servicing will depend upon the particular installation conditions and usage but in general once per year should be adequate. It is the law that all servicing work is carried out by a competent person such as British Gas or other CORGI registered personnel.
Cleaning the Burner/Injectors Lightly brush any debris from top of burner blades and ensure that ports are free of obstructions. Remove the two nuts fixing the burner manifold to the burner feed pipe. Remove the two nuts fixing the burner manifold to the combustion chamber door. Remove the two screws fixing the burner brackets to the combustion chamber door. Remove burner assembly, (noting position of pilot shield) 'O' ring and gasket. Remove the two screws fixing the mounting bracket.
Cleaning the Combustion Box Slide baffle forward (30, 40 and 50 models only). Side insulation panels and rear insulation panel should be removed to avoid brush damage. To remove side panel, remove one screw per panel. Slide panel down and away from location. Rear insulation panel can now be removed. The heat exchanger can now be easily cleaned thoroughly. Remove any obstructions from flue outlet and air inlet. Remove dirt and debris from bottom of combustion box.
CHANGING COMPONENTS 1 Before changing any components please read the Important Information section on page 5. 2 When changing components ensure that electrical and gas supplies are isolated before the work is started. Remove the outer case lower door panel by following the sequence of diagrams. 3 Remove the outer case from the boiler by unscrewing the two screws and washers, lift the case to clear the two hooks at the top of the combustion box. Draw the outer case clear of the boiler.
Eco Interrupter Leads Disconnect the leads at the overheat thermostat. One lead is removed by unscrewing the connection from the rear of the gas valve. The other lead can be removed after slackening off the thermocouple connection at the gas valve. Reassemble in reverse order. CAUTION: Do not overtighten. Piezo Igniter Withdraw and disconnect electrode lead. Remove retaining nut holding piezo igniter to bracket. Exchange igniter for new and reassemble.
Thermocouple Release nuts holding thermocouple in place. Bend new thermocouple to required shape, fit in place and tighten retaining nuts. Caution: Do not overtighten nuts. Thermocouple at Gas Valve Spark Electrode & Lead Unclip the electrode from the pilot bracket and remove lead from piezo igniter. Replace with new spark electrode ensuring it is fully engaged. Pilot Injector Disconnect nuts on pilot supply tube and remove. Extract injector, using a small screwdriver. Fit new injector and reassemble.
Overheat Thermostat NOTE: On boilers converted for use with gravity D.H.W., the overheat thermostat will have been rendered inoperable and will never need changing. Loosen the screw on the capillary retaining washer, allowing the washer to move freely. Free the capillaries from the clips on the left hand side of the combustion box. Withdraw the two thermostat phials from the thermostat pocket. Remove the locknut and withdraw the overheat thermostat from the bracket.
1 Main Thermostat 1 Loosen the screw on the capillary retaining washer, allowing the washer to move freely. Free the capillaries from the clips on the left hand side of the combustion box. Withdraw both thermostat phials from the thermostat pocket. 2 Disconnect the electrical plug and cable on the gas valve. 2 3 Carefully pull off the thermostat knob. Loosen the securing screw sufficiently for the electrical box cover to be removed, remove cover.
Pump Overrun Timer To change circuit board proceed as if to change Main Thermostat 1 to 6 (page 37) then: Disconnect the molex plug from the circuit board. Remove the circuit board from the two supports. Fit the new circuit board to the mounting plate and reconnect the molex plug. Reassemble all components in reverse order.
Burner and Injectors Remove the two nuts fixing the burner manifold to the burner feed pipe. Remove the two nuts fixing the burner manifold to the combustion chamber door. Remove the two screws fixing the burner brackets to the combustion chamber door. Remove burner assembly, (noting position of pilot shield) 'O' ring and gasket. Check the 'O' ring and gasket, replace if necessary.
Insulation Panels To replace the combustion chamber door insulation undo the five screws holding the insulation carrier assembly in place. Replace with new carrier assembly and reassemble in reverse order. To replace side insulation panels remove fixing screws. Slide panel down and away from location. Fit new side insulation panel and reassemble in reverse order. To replace rear insulation panel, remove the side insulation panels by removing fixing screws.
FAULT FINDING Gas Leak SYMPTOM Gas leak at jo int on valve bo dy on soap solution test. POSSIBLE C AUSES Loose screws at joints or fittin gs - defective damaged valv "O" ring e casting at jo int - defective pipe. burner feed Burner AUSES POSSIBLE C SYMPTOM nite. rner will not ig Pilot on but bu rner will ignite d and main bu Pilot establishe shut - down. ble to nuisance but system lia wn in ill not shut do Main burner w ntrols.
SHORT PARTS LIST 45-46-47-48 38 30 64 59 63 49-50 34 Key Description Model G.C.
Baxi UK Limited manufacture a comprehensive range of products for the domestic heating market Gas Central Heating Boilers (Wall, Floor and Fireside models). Independent Gas Fires. Renewal Firefronts. Gas Wall Heaters. Solid Fuel Fires. If you require information on any of these products, please write to the Sales Department.
Comp No 232184 - Iss 11 - 6/00 The Baxi Helplines For General Enquiries +44 (0)8706 060 780 For After Sales Service +44 (0)8706 096 096 For Technical Enquiries +44 (0)8706 049 049 Baxi UK Limited Brownedge Road Bamber Bridge Preston Lancashire PR5 6SN www.baxi.
