Biasi BASICA COND 28S User Manual And Installation Instructions
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Biasi BASICA COND 28S User Manual And Installation Instructions

Wall hung, fanflue, roomsealed, high efficiency gas boiler
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Wall hung, fanflue, roomsealed, high efficiency gas boiler
User manual and
Installation instructions
BASICA COND
Product name
BASICA COND 28S
Models
M275V.28 SR
G.C. Appl. No.
41-583-40

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  • Page 1 Wall hung, fanflue, roomsealed, high efficiency gas boiler User manual and Installation instructions BASICA COND Product name Models G.C. Appl. No. BASICA COND 28S M275V.28 SR 41-583-40...
  • Page 2 This allows a gain of useful heat that otherwise would be lost. Biasi UK Ltd is a licensed member of the Benchmark Scheme which aims to improve the standards of installation and commissioning of domestic heating and hot water systems in the UK and to encourage regular servicing to optimise safety, efficiency and performance.
  • Page 3 Remember that... The manual must be read thoroughly, so that you will be able to use the boiler in a safe and sensible way and must be carefully kept. It may be necessary for reference in the future. The first firing must be carried out by a competent and responsible Gas Safe engineer. The manufacturer •...
  • Page 4 On completion of the work, have a professionally qualified person check there efficiency. Repairs (under guarantee) must be carried out only by a Biasi an approved engineer, us- ing genuine spare parts. Thus do no more than switching off the boiler yourself (see the instructions).
  • Page 5 Combustion chamber panels Material: mineral fibres Known hazards - Some people can suffer reddening and itching of the skin. Fibre entry into the eye will cause foreign body irritation, which can cause severe irritation to people wearing contact lenses. Irritation to respiratory tract. Precautions - Dust goggles will protect eyes.
  • Page 6 If you are in any doubts as to the installation or operation of the boiler please read the instruction manuals thoroughly and then if necessary contact Biasi UK for advice and as- sistance.

  • Page 7: Table Of Contents

    Expansion vessel ..... . . 23 Settings for changing the control board ..56 Technical data BASICA COND 28S 9 GAS CONVERSION ....60 (M275V.28 SR) .

  • Page 8: Appliance Description

    APPLIANCE DESCRIPTION APPLIANCE DESCRIPTION Isolation valves Overview The figures in this manual only The model and serial number of the boiler is show one of the possible ways shown on the bottom of the boiler. of installing cocks, pipes and fit- tings.

  • Page 9: Control Panel

    APPLIANCE DESCRIPTION Control panel Fig. 1.3 10 Programming key 11 Programming key 12 LCD display 13 C.H. temperature reduce key 14 C.H. temperature increase key 15 Stand-by/Winter/Summer key 16 Reset key - 9 -...

  • Page 10: Lcd General Features

    APPLIANCE DESCRIPTION LCD general features SIGNAL DISPLAYED BY THE LCD For the boiler technical information refer to FUNCTION the section "TECHNICAL INFORMATION" Safety lockout due to on page 20. failed ignition Lockout due to safety thermostat EEPROM error RESET Pump circulation failure or insufficient system pressure Fan control anomaly...
  • Page 11 APPLIANCE DESCRIPTION FUNCTION FUNCTION Filling function of C.H. Boiler in heating anti- water completed, but freeze phase (the pressure is lower than symbol flashes) the minimum pressure for boiler filling Filling function of C.H. Heating set tempera- water completed, but ture pressure is higher than (all other symbols are...

  • Page 12: Instructions For Use

    An alternative solution Warnings can be an external frost thermo- Biasi UK Ltd support the Benchmark stat connected through your initiative. The Benchmark Checklist is wiring center. located at the back of this manual and...

  • Page 13: Ignition

    INSTRUCTIONS FOR USE 1.5 bar (e.g. 1.3 bar in (Fig. 2.4). Once done, close the valves on the filling loop. If you experience any difficulty with the operation of the boiler, switch off the boiler immediately at the fused spur iso- lation switch and contact your Installer or an approved Service Engineer.

  • Page 14: C.h. Circuit Temperature

    INSTRUCTIONS FOR USE way switch fitted during installation. The of about 25°C to a maximum of about 85°C LCD display shows the OFF status (only or from a minimum of about 50°C to a maxi- the heating antifreeze functions is active) mum of about 80°C or from a minimum of Fig.

  • Page 15: Switching Off

    INSTRUCTIONS FOR USE RESET RESET Fig. 2.10 Fig. 2.12 Adjusting the C.H. temperature with the In OFF mode, the antifreeze protection is external temp. probe installed active. When the external temp. probe (optional) is installed your boiler automatically adjusts If a long period of inactivity is envisioned: the temperature of the C.H.

  • Page 16: Useful Advice

    USEFUL ADVICE USEFUL ADVICE Central Heating RESET For your comfort and added system control, you can install a room thermostat but you should not shut off the radiator in that room or have a TRV fitted on the radiator. Fig. 3.2 If a radiator (or a convector) does not heat up, check that no air is present in it and that Therefore, when the boiler is not lit and...

  • Page 17: External Cleaning

    USEFUL ADVICE • burner; Each fault is classified accord- ing to the level of priority. If • exhaust fume duct and flue; • pressurisation of the expansion tank; more than one faults are detect- ed at the same time, the most •...

  • Page 18: Displaying In Info Mode

    USEFUL ADVICE Water comes out of the pressure relief valve Check if the filling cock is closed tightly (see "Refilling procedure" on page 12). Check on the pressure gauge that the pres- sure in the central heating circuit is not close to 3 bars.

  • Page 19: Flue Probe And Safety Thermal Fuse

    USEFUL ADVICE (not used) Flow rate PWM pump speed percentage Fan speed (RPM/100) (not used) Last error code Second-to-last error code Calculated heating set Fig. 3.7 point (with climatic curve or configured set) Number of weeks to maintenance Flue probe and safety thermal fuse If the flue thermal cut-off fuse is triggered, the boiler goes into...

  • Page 20: Technical Information

    TECHNICAL INFORMATION TECHNICAL INFORMATION Overview Fig. 4.1 - 20 -...

  • Page 21: Main Diagram

    TECHNICAL INFORMATION Main diagram Fig. 4.2 3 Condensate drain pipe 19 NTC heating delivery probe - NTC maxi- 4 C.H. flow valve mum temperature 5 Gas inlet valve 20 Flame-detecting electrode/Ignition elec- 6 C.H. pressure relief valve pipe trode 7 Main circuit drain valve 21 C.H.
  • Page 22 TECHNICAL INFORMATION 26 Gas valve 27 Gas valve outlet test point 28 Primary circuit pressure switch 29 Condensate trap 30 Fan 31 Air manifold 32 Air/gas mixer 33 Burner 34 C.H. expansion tank 35 Flue outlet pipe 36 Air intake pipe 37 Flue exhaust sampling point 38 Air sampling point 39 By-pass valve...

  • Page 23: Hydraulic Specifications

    The height difference between the pressure relief valve and the highest point in the sys- Model BASICA COND 28S (M275V.28 SR) tem may be 10 m at most. For greater differences, increase the pre- Pressure (bar) 0,55...

  • Page 24: Technical Data Basica Cond 28S (M275V.28 Sr)

    TECHNICAL INFORMATION Technical data BASICA COND 28S (M275V.28 SR) Heat input Gas supply pressures 27,5 mbar Nominal net BTU/h 93834 2000 30,5 Natural G20 1700 Nominal gross BTU/h 104156 2500 3700 Minimum net BTU/h 21155 Propane G31 2500 4500 Minimum gross BTU/h 23482 Gas rate maximum Useful output...
  • Page 25 TECHNICAL INFORMATION Other specifications Flue design Height Boiler type B23P C13 C33 C43 C53 C63 C83 C93 Width Ø Coaxial 60/100 Depth Ø Twin split pipes 80/80 Weight (dry) 30,8 Ø Roof 60/100 Water volume in the boiler (up to 1 l (kg) Ø...
  • Page 26 TECHNICAL INFORMATION Model(s): BASICA COND 28S M275V.28 SR Condensing boiler: Low-temperature boiler (**): B1 boiler: Cogeneration space heater: If yes, equipped with a supplementary heater: Combination heater: Item Symbol Value Unit Item Symbol Value Unit Seasonal space heating Rated heat output η...

  • Page 27: General Requirements

    GENERAL REQUIREMENTS GENERAL REQUIREMENTS Related documents The installation of this appliance must be in accordance with the relevant requirements of the current Gas Safe (Installation & Use) Regulations, the Local Building Regulations, the current I.E.E. Wiring Regulations, the Regulations and by-laws of the local water un- Benchmark places responsibilities on both dertaking, and in Scotland, in accordance with manufacturers and installers.

  • Page 28: Flue System

    GENERAL REQUIREMENTS guidance on this aspect. A compartment used to enclose the appliance must be designed specifically for this purpose. This appliance is not suitable for external installation. Flue system The provision for satisfactory flue termination must be made as described in BS 5440 part 1. For Ireland (IE), refer to I.S.813.2002.

  • Page 29: Gas Supply

    GENERAL REQUIREMENTS Minimum dimensions Symbol Location position (mm) Directly below an opening, air brick, opening window, etc. Above an opening, air brick, opening window, etc. Horizontally to an opening, air brick, opening window, etc. Below temperature-sensitive building components, e.g. D ** plastic gutter soil pipes or drain pipes E ** Below eaves...

  • Page 30: Air Supply

    GENERAL REQUIREMENTS Air supply If a part of the drainpipe runs externally this part should be kept as short as possible and The room in which the boiler is installed does protected to reduce the risk of freezing. not require a purpose provided air vent. Connection of condensate drainage pipe to internal soil and vent stack.

  • Page 31: Water Circulation (C.h.)

    GENERAL REQUIREMENTS Water circulation (C.H.) • A WRAS approved dry trap such as the Te- sla DTUN 1522 is utilised. Detailed recommendations are given in BS • That the condensate is connected down- 6798, BSEN 12828: 2003, BSEN 12831: 2003 stream of the trap as shown in the drawing &...

  • Page 32: Water Treatment

    GENERAL REQUIREMENTS facilitate complete filling of the system. with either plastic or copper pipes, it is impor- tant the system is fully flushed, on completion, Expansion vessel to ensure flux residues, swarf, oils and other The appliance has an integral sealed expan- installation debris is removed.

  • Page 33: Installation

    INSTALLATION INSTALLATION The safety relief valve and the condensate drain must be connected to a suitable drain, Warnings or discharged in a safe manner. The use of gas appliances is The electrical wiring must conform with cur- subject to statutory control; it is essential to observe the current rent Regulations, in particular: regulations and laws in force...

  • Page 34: Installing The Bracket

    We recommend the use of a suitable Build- cert approved universal inhibitor to protect the C.H. system from corrosion. Biasi UK strongly recommend that matched - 34 -...

  • Page 35: Overall Dimensions

    INSTALLATION Overall dimensions Joints The boiler respects the following dimen- The boiler uses the following fittings: sions: Pipe sizes Functions (o.d) Ø80 Ø80 Gas, C.H. return, C.H. flow Ø 22 mm Pressure relief valve Ø 15 mm Ø100 Ø 20 mm Condensate drain (rubber) sizes in mm o.d.

  • Page 36: Fitting The Flue System

    INSTALLATION Choice of flue The flue exhaust/air intake can be installed in the mode: The terminal must be higher than the boiler. The following kits to be connected to the boiler are available: Fig. 6.4 Wall flue exhaust kit (Fig. 6.6 A) This kit allows the flues to be exhausted in Fitting the flue system the rear wall or at the side of the boiler.
  • Page 37 INSTALLATION Coaxial pipe Ø 60/100 with 90° bend (B) For the bend of 45° loss 0.9 m Nominal length 1.55 m For the bend of 90° loss 1.65 m Minimum length 0.5 m Type C Maximum length 10 m 90° Additional bends at 45°...
  • Page 38 INSTALLATION Pluming kit A (Fig. 6.10) Pluming kit B (Fig. 6.11) (Fig. 6.12) Coaxial Ø 60/100 mm + vertical part Ø 60 Push on type Ø 60 mm vertical plume man- mm (flue outlet). agement kit This kit allows the products of combustion to Coaxial Ø...

  • Page 39: Electric Connection

    INSTALLATION ”a” vertical length (m) Allowed values ”b” horizontal length (m) Fig. 6.12 A Plume deflector is available to assist in overcoming boundary nuisance issues. Fig. 6.15 • Unscrew the screw "N" (Fig. 6.14) and turn the control panel "P", as shown in Fig.

  • Page 40: Connecting The Room Thermostat Or Zone Valves

    INSTALLATION switch to the power supply terminal block of the boiler Fig. 6.17 keeping the same connections for the live (brown wire) and the neutral (blue wire). External 3A fuse or fused plug with same current rating is recommended. • Connect the earth cable (yellow/green) to an effective earth plant.

  • Page 41: Installation Of The External Temperature Probe

    INSTALLATION Do not connect live wires to ter- Boiler side minals to which the room ther- mostat must be connected. 6.11 Installation of the external temperature probe (optional) The external probe must be installed on the external wall of the building avoiding: •...
  • Page 42 INSTALLATION Thus, with the hydraulic separator, it is pos- sible to have a constant flow rate production circuit and a variable flow rate distribution circuit. Hydraulic system examples Top zone + low temperature zone. External probe Low temperature Hight temperature Fig.

  • Page 43: Commissioning

    COMMISSIONING COMMISSIONING Warnings The commissioning of this boiler and sys- tem must only be undertaken by a Gas Safe Registered Engineer in accordance with the requirements of the Gas Safe In- stallation and Use Regulations and be ap- proved by Gas Safe. Ensure that the Benchmark Checklist is satisfactorily completed during the com- missioning process.
  • Page 44 COMMISSIONING • Gradually open stopcock at the filling point proved label should be used. connection to the C.H. system until water is heard to flow; do not open fully. • Electrically power the boiler by switching on • Open each radiator air vent starting at the the double pole isolation switch.

  • Page 45: Condensate Pipe And Traps

    COMMISSIONING • Once the pump has been released, open Sampling points the gas cock and check that the boiler op- Flue exhaust erates correctly both in domestic hot water and heating modes. • Check the gas pressures and flow rates as shown in section "GAS CONVERSION"...

  • Page 46: Lighting The Boiler

    COMMISSIONING nite and operate perfectly normally. If external controls are fitted (e.g. Timeclock, room thermostat) ensure they ”call for heat”. • Electrically power the boiler by switching on the double pole isolation switch. The LCD display shows the OFF status (only the heat- ing antifreeze functions is active) (Fig.

  • Page 47: Checking The Ignition Device

    COMMISSIONING • Make sure that the ambient thermostat is in be necessary to repeat the resetting operation the “heat request” position”. several times so as to remove the air present • Check the correct functioning of the boiler in the pipework. both in domestic hot water mode and in heating mode.

  • Page 48: Checking The Condensate Drain Pipe

    COMMISSIONING nical data BASICA COND 28S (M275V.28 SR)" on pag. 24 (Flue gas figures). 7.11 Checking the condensate drain pipe Check the soundness and integrity of the con- densate drain pipe. Verify the cleanness and correct filling of the condensate traps.

  • Page 49: Advanced Commissioning

    ADVANCED COMMISSIONING ADVANCED COMMISSIONING next segment. • Press the 14 button to set "1 9 -", then Access parameters for installer press 10 to confirm the 9 and go to the next segment. Enter “programming mode” by holding down • Press the 14 button to set "1 9 8", then buttons 15 and 16 (Fig.

  • Page 50: Setting The K Coefficient Of The External Temperature Probe

    ADVANCED COMMISSIONING • Press 10 or 11 (Fig. 8.1) to confirm the Delivery temperature °C (25-85°C) value entered and return to the list of pa- rameters (Fig. 8.4). • Press the 15 button (Fig. 8.1) to exit “pro- gramming mode”. Setting the K coefficient of the external temperature probe The boiler is set with a K coefficient equal to...
  • Page 51 ADVANCED COMMISSIONING Sequence for setting the K coefficient • Enter “programming mode” by pressing the 15 and 16 keys simultaneously for 5 RESET seconds (Fig. 8.9). The code P00 appears on the display, indicating entry into “pa- rameter P00” (Fig. 8.10). Fig.

  • Page 52: Selecting The Maximum Heating Temperature Setpoint With Climatic Curve Set

    ADVANCED COMMISSIONING At this point the system delivery tempera- Delivery ture will follow the trend in relation to the set temperature °C K coefficient. (25-55°C) If the room temperature is not comfortable, + 5 °C you can increase or decrease the heating system delivery temperature by ±...

  • Page 53: Selecting The Heating Temperature Set

    ADVANCED COMMISSIONING Selecting the heating tempera- heating system needs, once the climatic ture set curve has been set, the maximum tempera- ture can be lowered. Depending on the type of high or low tem- perature heating system, the temperature • Enter “programming mode” by following setting range can be set.

  • Page 54: Setting The Pump Post-Circulation

    ADVANCED COMMISSIONING • Press 10 or 11 (Fig. 8.19) to confirm the ward), until the LCD display shows the code P03, indicating entry into “parameter value entered and return to the list of pa- rameters (Fig. 8.20). P03” (Fig. 8.23). •...

  • Page 55: Factory Reset

    ADVANCED COMMISSIONING the 15 and 16 keys simultaneously for 5 seconds (Fig. 8.25) until the code P00 ap- pears on the display, indicating entry into RESET “parameter P00” (Fig. 8.26). Fig. 8.28 • It is possible to modify the value of param- eter 05 from 0 to 255 minutes by pressing the 13 or 14 keys.

  • Page 56: Settings For Changing The Control Board

    ADVANCED COMMISSIONING RESET RESET Fig. 8.30 Fig. 8.32 • By using buttons 13 or 14 (Fig. 8.29) it is • Scroll through the various parameters us- possible to modify the value of parameter ing 10 or 11 until the LCD display shows A49: the message Cod, indicating entry into 39 = factory reset...
  • Page 57 ADVANCED COMMISSIONING possible to modify the value of parameter • Press 10 or 11 (Fig. 8.31) to confirm the P10 (Fig. 8.35): value entered and return to the list of pa- 05 = M275V.28 SR rameters (Fig. 8.36). • Press 10 and hold until the LCD display shows the code P09, indicating entry into RESET “parameter P09”...
  • Page 58 ADVANCED COMMISSIONING A00 (Fig. 8.41). shows the code A02, indicating entry into 00 = D.H.W./C.H. (factory setting) “parameter A02” (Fig. 8.44). 01 = Storage tank 02 = Only C.H. (correct) RESET RESET Fig. 8.44 • By using buttons 13 or 14 (Fig. 8.31) it is Fig.
  • Page 59 ADVANCED COMMISSIONING • Press 10 (Fig. 8.31) to confirm the value A38 (Fig. 8.50). 60 = Default entered and return to the list of param- eters (Fig. 8.45). 10 = Correct • Press button 10 and hold until the LCD display shows the code A21, indicating RESET entry into “parameter A21”...

  • Page 60: Gas Conversion

    GAS CONVERSION GAS CONVERSION • Carry out gas conversion by correctly replacing the gas restrictor (Fig. 9.2), re- Warnings ferring to section "Technical data BASICA COND 28S (M275V.28 SR)" on pag. 24. The commissioning of this boiler and system must only be undertaken by a Gas restrictor Gas Safe Registered Engineer, quali- fied to work on Liquefied Petroleum Gas...
  • Page 61 GAS CONVERSION instructions given in the Service manual, section Gas valve - Adjustment. • Reposition the control panel and reas- semble the front panel of the body. • Apply the label indicating the type of gas and the pressure value for which the unit is set.

  • Page 62: Maintenance

    MAINTENANCE MAINTENANCE 10.1 Warnings The procedures detailed in this chapter must be carried out only by a Gas Safe Registered Engineer. Thus you are ad- vised to contact an Authorised Service Agent. For Ireland (IE), the servicing work must be carried out by a competent RGII reg- istered Person.

  • Page 63: Dismantling The External Panels

    MAINTENANCE possible to modify the value of parameter A50: 00 = Maintenance period not activated 01 = Maintenance period activated • Press 10 or 11 (Fig. 10.1) to confirm the value entered and return to the list of pa- rameters (Fig. 10.3). •...

  • Page 64: Reassembly The External Panels

    MAINTENANCE 10.4 Reassembly the external panels Side panels CLOSED Fit the external panels "F" and "H" in the reverse order to that described on section "Dismantling the external panels" on page Main circuit drain valve Front panel • Fit the front panel "E" in the reverse order OPEN to that described on section "Dismantling the external panels"...
  • Page 65 MAINTENANCE Fig. 10.11 • Unscrew screws "M" and remove the fan burner unit 33 (Fig. 10.10). • Extract the burner casing by pulling it out- wards. • The silicon seal on the front wall of the combustion chamber Fig. 10.12 must be replaced if worn.

  • Page 66: Vessel

    MAINTENANCE Electrodes disclaimer. More specific maintenance will be valuated Note to service engineers: It is and carried out by a competent Gas Safe required that the burner seal, Registered Engineer. lip seal and mixing chamber Attention, to reassemble repeat seal along with the flame de- the operations carried out in re- tection electrode are inspected verse order.

  • Page 67: Checking The Condensate Drain Pipe

    • Check the combustion of the boiler using the outlets located on the flue tubes (Fig. 10.14) and compare the data measured with that following. Model BASICA COND 28S - M275V.28 SR Nominal heat input 21,0 (A) (E) Nominal efficiency...

  • Page 68: 10.13 Water Inhibitor Concentration

    MAINTENANCE pressure" on page 45 of this manual. Flue sweep function at minimum output in domestic hot water mode • Scroll through the various menus by 10.13 Water inhibitor concentration pressing the keys 10 (back) or 11 (for- Where chemical products are used the level ward), until the LCD display shows the of water treatment should be checked on an code P06, indicating entry into “parameter...
  • Page 69 MAINTENANCE tion of the “chimney sweep function” at minimum output in domestic hot water mode. • Press the 10 key (Fig. 10.17) to confirm the value entered and activate the func- tion (Fig. 10.22). RESET Fig. 10.22 Flue sweep function at maximum output in heating mode •...

  • Page 70: Benchmark Commissioning

    Benchmark Commissioning & Warranty Validation Service Record It is a requirement that the boiler is installed and commissioned to the manufacturers’ instructions and the data fields on the commissioning checklist completed in full. To instigate the boiler warranty the boiler needs to be registered with the manufacturer within one month of the installation.

  • Page 71: Gas Boiler System Commissioning Checklist & Warranty Validation Record

    GAS BOILER SYSTEM COMMISSIONING CHECKLIST & WARRANTY VALIDATION RECORD Address: Boiler make and model: Boiler serial number: Commissioned by (PRINT NAME): Gas Safe registration number: Company name: Telephone number: Company email: Company address: Commissioning date: Heating and hot water system complies with the appropriate Building Regulations? Optional: Building Regulations Notification Number (if applicable): Time, temperature control and boiler interlock provided for central heating and hot water Boiler Plus requirements (tick the appropriate box(s))

  • Page 72: Service & Interim Boiler Work Record

    SERVICE & INTERIM BOILER WORK RECORD It is recommended that your boiler and heating system are regularly serviced and maintained, in line with manufacturers’ instructions, and that the appropriate service / interim work record is completed. Service provider When completing a service record (as below), please ensure you have carried out the service as described in the manufacturers’ instructions. Always use the manufacturers’...
  • Page 73 SERVICE & INTERIM BOILER WORK RECORD It is recommended that your boiler and heating system are regularly serviced and maintained, in line with manufacturers’ instructions, and that the appropriate service / interim work record is completed. Service provider When completing a service record (as below), please ensure you have carried out the service as described in the manufacturers’ instructions. Always use the manufacturers specified spare parts.
  • Page 74 NOTES - 74 -...
  • Page 76 *1796234870* 17962.3487.0 2522 76A5 Biasi UK Ltd Commercial Road Leamore Enterprise Park WALSALL WS2 7NQ Sales Tel. 01922 714600 Tech. Service Tel. 01922 714636 www.biasi.co.uk...

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M275v.28 sr

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