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Related Manuals for Riello TAU 150 UNIT
Summary of Contents for Riello TAU 150 UNIT
- Page 1 CONDENSING BOILERS TAU 150 - 210 UNIT INSTALLATION AND MAINTENANCE MANUAL...
- Page 2 EN 677 Standard: Gas-fired central heating boilers; specific requirements for condensing boilers with a nominal heat input not exceeding 70 kW • Delegated Regulation (EU) N. 813/2013. RANGE MODEL FUEL CODE TAU 150 UNIT Methane - LPG 20011774 TAU 210 UNIT Methane - LPG 20011775 GENERAL...
- Page 3 This manual provides information that is essential to the installation of the appliance. Used in conjunction with your own knowledge and expertise it will enable you to install the appliance quickly, easily, and correctly. Once again, please accept our thanks and our congratulations on your choice of product Riello S.p.A. GENERAL...
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Page 4: Table Of Contents
CONTENTS GENERAL General Safety Information Precautions Product description Safety devices Identification Data plate Layout Technical specifications Accessories Water circuit Wiring diagram Positioning the temperature sensors Pumps Control panel Programming levels Information levels INSTALLER TECHNICAL ASSISTANCE SERVICE Unpacking the product Initial start-up Opening Checks during and after initial start-up Dimensions and weight... -
Page 5: General Safety Information
GENERAL SAFETY INFORMATION As soon as you open the packaging, check imme- Periodically check that operating pressure in the diately that the contents are all present and unda- central heating circuit is over 1 bar but below the maged. Contact the r reseller from whom you maximum limit specified for the boiler. -
Page 6: Product Description
B23P Tipo di apparecchio Caldaia categoria 2H3P Pressioni di alimentazione gas: - Serial number plate 20 mbar RIELLO S.p.A. Via Ing.Pilade Riello 7 37 mbar 37045 Legnago (VR) - ITALY This specifies the Mod. Cod. N° Regolazione effettuata dal costruttore:... -
Page 7: Data Plate
Kategorie: Drivstoff: Kategori: Rated heat input RIELLO S.p.A. Rated useful heat output Via Ing.Pilade Riello 737045 Legnago (VR) - ITALY Index of protection T067697GE Caldaia a condensazione - Chaudière à condensation P.min Minimum pressure Brennwertkessel - Condenserende verwarmingsketel - Kondenskjel... -
Page 8: Technical Specifications
TECHNICAL SPECIFICATIONS MODELLER TAU 150 UNIT TAU 210 UNIT condensing boiler for central heating Device type Fuel G20-G31 Device category II2H3P Combustion chamber vertical vertical Maximum rated heat input at furnace referred to HVC (LCV) 166,6 (150) 233,3 (210) Minimum rated heat input at furnace referred to HVC (LCV) -
Page 9: Accessories
ACCESSORIES DESCRIPTION CODE First mixed zone electrical kit 20011764 Second mixed zone electrical kit 20012161 Third mixed zone electrical kit 20011194 CLIMA TOP kit for TAU UNIT 55-210 boilers 20012160 CLIMA COMFORT kit for TAU UNIT boilers 20012157 Cascade cabling kit 20012102 Clip-in communication card 4031840... -
Page 10: Wiring Diagram
WIRING DIAGRAM BOILER CONTROL PANEL Pboiler Pgas Fan-PWM SCH2 SCH1 X40-5 OCI420 X50-5 M1 M2 M3 AGU2.5 Treg X30-14 X30-1/14 AGU2.3 FILTRO 6.3A 230 Vac Room thermostat (low voltage, 24V) Fuse 6.3 A-T Fan-PWM Main switch Mains filter Treg Connection for temperature controller (accessory) Flue gas thermostat, 75°C (+0/-10) Pboiler Pressure switch (combustion chamber) - Page 11 Connection scheme for added accessories SCH4 CLIP-IN communication card MB-LPB DB-LPB SCH3 SCH5 NTC/10K NTC 10K SCH3 RVS control card (**) SCH4 Room unit control card SCH5 Mixed zone interface card (clip-in) Additional mixed zone pump Mixer valve for additional zone CH flow temperature sensor for additional mixed zone (**) Refer to the instructions provided with your card for details on how to connect it to the RVS unit.
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Page 12: Positioning The Temperature Sensors
POSITIONING THE TEMPERATURE SENSORS SENSORS INSERTED IN THEIR SOCKETS IN THE BOILER: - Flue gas temperature sensor (1) - Safety thermostat temperature sensor (2) - CH flow temperature sensor (3) - Control temperature sensor (4) - Flue gas thermostat (5) Front view Rear view IMPORTANT! -
Page 13: Control Panel
CONTROL PANEL CONTROL PANEL AND SYMBOLS 11 12 13 - Burner lockout indicator - DHW mode selector (for use with remote storage cylinder: accessory) - Central heating or room temperature setting key - DHW temperature setting key (for use with remote storage cylinder: accessory) - Reset key. - Page 14 DISPLAY - Water pressure reading (not used) - Large numeric display. Displays current value - Chimney sweep or Service Required symbol - Display symbols: v DHW temperature or DHW mode active r CH or room temperature setpoint, or CH mode active c Outdoor temperature o Daytime CH mode l Night-time CH mode...
- Page 15 MAIN SCREEN A1 - Functioning mode. Press the mode key to activate the various modes, as shown by the line under the corresponding symbol B1 - DHW mode. Press the key to activate and deactivate DHW mode C1 - Daytime CH mode D1 - Time of day E1 - Current boiler temperature - Water pressure (not used)
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Page 16: Programming Levels
Notes on functioning The control panel on the TAU UNIT boiler controls the following functions: - The DHW priority function. This ensures that the boiler - Overtemperature dispersal function. If the temperature can still serve the central heating circuit even when threshold thermostat trips (86°C) the boiler shuts down domestic hot water is drawn off. - Page 17 INSTALLER LEVEL Parameters in this level must only be changed by personnel from r's Technical Assistance Service. This level contains, among others, parameters for selecting the slope of the central heating 1 curve and setting the DHW reduced temperature setpoint (if an optional remote storage cylinder is connected). See the “Complete list of parameters”...
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Page 18: Information Levels
Explanation Press one of these keys until you reach the parameter you require. The example here shows the parameter Oxxx. Press these keys to change the current value. To memorise the new value, you need to move on to another parameter. Press one of these keys to exit the manufacturer programming level. - Page 19 Functioning phases (table 1) Nr. displayed Characteristic Standby Ignition prevented Fan start Pre-ventilation Wait time Pre-ignition time Safety time, constant Safety time, variable Central heating mode Domestic hot water mode Simultaneous CH and DHW mode Post-ventilation with last control used Post-ventilation at pre-ventilation level Home run (*) Burner lockout (error code displayed)
- Page 20 EXTENDED INFORMATION LEVEL 2: process values Press the key. Press and hold both keys for at least 3 seconds. Press the key. Press one of the keys until you reach the parameter you require. Process values Characteristic Reserved Ionisation current Fan speed Fan control current (PWM) Relative boiler heat output...
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Page 21: Unpacking The Product
UNPACKING THE PRODUCT The boiler is delivered on a wooden pallet, suitably packed and protected by a wooden crate. Check immediately that there is no damage and that the boiler is exactly as ordered. The product specifications are shown on the outside of the packing: model, power, equipment, fuel type. -
Page 22: Dimensions And Weight
DIMENSIONS AND WEIGHT TAU 150 UNIT TAU 210 UNIT 1216 1216 1864 1864 Weight HANDLING Using equipment adequate for the weight involved, proceed as shown to move and handle the boiler in the boiler room: - Pull the front panel towards you then lift it up to remove it. -
Page 23: Place Of Installation
PLACE OF INSTALLATION Because this TAU UNIT, boiler generates over 35 kW of When installing the boiler, allow sufficient space heat output, it MUST be installed in a dedicated boiler around it to access all safety and control devices room in compliance with applicable technical standards. and to permit easy maintenance. -
Page 24: Water In Heating Circuits
Contact RIELLO’s Technical Assistance Service for fur- ther information on water additives and their use. WATER IN CENTRAL HEATING SYSTEMS: INSTRUCTIONS FOR THE DESIGN, INSTALLATION AND MANAGEMENT OF CENTRAL HEATING SYSTEMS 1. - Page 25 2. Central heating systems Do not use automatic filling devices to add water to central heating systems. Use a manual device instead and record top-ups in the system service book. If a system comprises a number of boilers, when that system is first put into service, make sure that all the boilers function simultaneously or on a short interval rotation basis in order to evenly distribute initial limescale deposits.
- Page 26 These are contact between system water and air and the continuous addition of fresh water to the circuit. To eliminate contact between system water and the air (thus avoiding oxygenation of the system water), we need to: - ensure that the expansion vessel is a closed vessel, and of the correct size and pre-charge pressure (the pressure to be checked periodically);...
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Page 27: Water Connections
WATER CONNECTIONS TAU UNIT boilers are designed and made for installation in combined central heating and domestic hot water produc- tion systems. The water fittings have the following specifications: TAU 150 - 210 UNIT 1123 TAU 150 TAU 210 UNIT UNIT A (mm) 1447... - Page 28 Typical water system schematics TAU UNIT: basic configuration TAU UNIT Storage cylinder (if present) TAU UNIT: configuration with temperature control kit installed TAU UNIT Storage cylinder (if present) 1 - Isolating valve 9 - Pressure reducer 2 - Non-return valve 10 - Mixer valve 3 - Pump 4 - Expansion vessel...
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Page 29: Draining The Condensate
DRAINING THE CONDENSATE Always maintain a slope “i” of over 3° and ensure that the diameter of any hose used is greater than that of the boiler's own condensate drain pipe. i≥3° The connection to the waste water drain must be made in compliance with national and local legislation and standards. -
Page 30: Condensate Neutralisation Unit
CONDENSATE NEUTRALISATION UNIT NEUTRALISATION UNIT TYPE N2 N2 neutralisation units are designed for systems with boiler condensate drains pits located at a lower level than the boiler condensate drain fitting. These neutralisation units do not require any electrical connections. Type Q.ty of Dimensions Fitting... - Page 31 The inlet fitting (A) of the HN2 neutralisation unit (the lower fitting) must be connected to the boiler conden- sate drain fitting using the flexible hose (C) supplied. This condensate drain hose is specially made to prevent combustion fumes escaping into the atmosphere. 1,5 m The outlet fitting (B) of the neutralisation unit (the top fitting) must be connected to the boiler room’s waste...
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Page 32: Gas Connection
GAS CONNECTION r TAU UNIT boilers must be connected to the metha- TAU 150 - 210 UNIT ne or LPG gas supply in compliance with the relevant standards. Perform the following checks before making the connec- tion: - Check that the boiler is compatible with the type of gas supply - Check that the gas supply pipes have been thoroughly cleaned. -
Page 33: Ch Frost Protection
CH FROST PROTECTION TAU UNIT condensing boilers are equipped with an No special anti-frost additives are therefore needed, electronic frost protection system. This system starts up unless the system is to be completely shut down for the boiler if temperature drops below a certain threshold. an extended period of time. -
Page 34: Electrical Connections
ELECTRICAL CONNECTIONS TAU UNIT condensing boilers are fully wired in the factory. Only the following electrical connections remain to be made: - mains electricity supply; - room thermostat; - outdoor temperature sensor; - storage cylinder pump (if relevant). Proceed as follows to access the control panel terminal strip: - Pull the front panel towards you then lift it up to remove it. -
Page 35: Sensor Connections
SENSOR CONNECTIONS Proceed as follows to access the control panel terminal strip: - Swing down the control panel as instructed on the pre- vious page - Unscrew the screws (2) and turn out the front panel hou- ROTATE sing the control panel (1) - Route the connection cables through the cable grommets in the rear of the control panel. -
Page 36: Outdoor Sensor Connections
OUTDOOR SENSOR CONNECTIONS Correct positioning of the outside temperature sensor is essential to proper indoor climate control. The sensor must be installed outside the building to be heated, about 2/3 of the way up a NORTH or NORTH-WEST facing wall, well clear of any flues, doors, windows and out of direct sunlight. Fixing the outside sensor to the wall - Unscrew (anti-clockwise) the cover from the sensor casing to access the sensor terminals and fixing holes. -
Page 37: Filling And Draining The System
FILLING AND DRAINING THE SYSTEM TAU UNIT boilers require a filling pipe connected to the central heating circuit return pipe. All the necessary circuit shut-off and drain cocks must be provided. FILLING THE SYSTEM Make sure that the boiler’s central heating drain cock (1) is closed before you start filling the system. -
Page 38: Initial Start-Up
INITIAL START-UP - Switch the electricity supply ON at the system's main switch and at the control panel. - The boiler switches on and the display shows the sof- tware version of the main control board. - The display shows the system status and the tempera- ture measured by the boiler temperature sensor. - Page 39 If a remote storage cylinder (accessory) is present, connect the storage cylinder temperature sensor to the control panel and set the manufacturer level parameter “558b2”=0 (see the “Manufacturer level” section). - Press the key. Press the keys to adjust the setpoint. Press any of the keys to exit R T M V The new setting is stored in memory.
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Page 40: Checks During And After Initial Start-Up
CHECKS DURING AND AFTER INITIAL START-UP Once the boiler has started up, make sure that it shuts down and re-starts properly when: - The central heating temperature setpoint is changed (see page 48) - The control panel is switched OFF. - The room thermostat or timer setting is changed. -
Page 41: Temporary Shutdown
TEMPORARY SHUTDOWN If you are going to be away for a short period of time like a weekend or a short holiday, etc. proceed as follows. - Press and hold the key until the bar (1) appears under "Stand-by" mode". Provided power to the boiler remains switched on, as shown by the green LED, and the fuel supply remains open, the boiler remains protected by the frost protec-... -
Page 42: Calibrating Combustion Parameters
Allen screw. Turn the screw clockwise to reduce CO anti-clockwise to increase CO Once the adjustments are complete, the combustion parameters should be as specified in the tables below. values for functioning at MAXIMUM POWER TAU 150 UNIT TAU 210 UNIT G20 (%) G31 (%) 10,1 10,1... - Page 43 CO , clockwise to increase CO Once the adjustments are complete, the combustion parameters should be as specified in the tables below. values for functioning at MAXIMUM POWER TAU 150 UNIT TAU 210 UNIT G20 (%) G31 (%) 10,1 10,1...
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Page 44: Setting Functioning Parameters
SETTING FUNCTIONING PARAMETERS If an outdoor temperature sensor is connected, the controller uses the heating curve to generate the CH flow tempe- rature setpoint, thus enabling the boiler to maintain a constant room temperature even without the use of a room unit. The steeper the slope of the heating curve, the higher the flow temperature setpoint at low outdoor temperatures (see Manufacturer parameter 532). - Page 45 Compound outdoor temperature is calculated from effective outdoor temperature and attenuated outdoor temperature. It is calculated at 10 minute intervals on the basis of effective outdoor temperature and directly determines Summer/ Winter mode switching (par. 516). Attenuated outdoor temperature °C Te - Outdoor temperature Tea - Attenuated outdoor temperature...
- Page 46 SETTING CENTRAL HEATING PARAMETERS - Press the key: - With an outdoor temperature sensor connected, set the room temperature setpoint. This setting shifts the heating curves (see the second figure on page 46). - With no outdoor temperature sensor connected, set a fixed boiler temperature setpoint.
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Page 47: Error Codes
ERROR CODES TEMPORARY ERROR DISPLAY - If a temporary error occurs, the display alternates between displaying the time display and the error code. - Press the key to display the error code on the main display. - Press and hold the keys simultaneously for 3 seconds. - Page 48 PERMANENT ERROR DISPLAY - If a permanent error occurs, the error code flashes on the main display. The controller performs a safety shutdown. Example: E150. - Press the key to display the error code on the main display. - Press and hold the keys simultaneously for 3 seconds.
- Page 49 Error Diagnostic code via Description of error Type of fault System action Procedure info No input code No input code No input code No input code Message Outdoor temperature Short circuit in outdoor Check/replace outdoor Message sensor error temperature sensor temperature sensor Outdoor temperature Outdoor temperature...
- Page 50 Error Diagnostic code via Description of error Type of fault System action Procedure info Short circuit and fault in DHW 1 temperature Check/replace DHW temperature sensor Message sensor error temperature sensor (B3) Short circuit in DHW Check/replace DHW 2 sensor error Message temperature sensor (B3) temperature sensor...
- Page 51 Error Diagnostic code via Description of error Type of fault System action Procedure info Burner lockout Contact Technical Electronic device errors Hardware error (permanent). Lockout Assistance Service reset required Burner lockout Contact Technical Electronic device errors Hardware error (permanent). Lockout Assistance Service reset required Room thermostat input...
- Page 52 Error Diagnostic code via Description of error Type of fault System action Procedure info dpH2OmaxPuOn Check the water parameter (maximum Water pressure too high pressure; check the permissible pressure Safety shutdown (inactive) system; check the differential after pump pressure switch start-up) exceeded Water pressure is below the value set...
- Page 53 Error Diagnostic code via Description of error Type of fault System action Procedure info Check the air pressure Comburent air system Maximum fan speed switch; check the air Safety shutdown error exceeded intake pipe; check the Check the air pressure Comburent air system Fan speed below switch;...
- Page 54 Error Diagnostic code via Description of error Type of fault System action Procedure info Illegal segment number Contact Technical Illegal LPB address Message or LPB device number Assistance Service LPB incompatibility Interface/base unit LPB Contact Technical between interface unit Message Assistance Service incompatibility and base unit...
- Page 55 Error Diagnostic code via Description of error Type of fault System action Procedure info The reset criterion for OEM parameter not error 426 has not been editable via QAA. reached (criterion: Generic error. Check Generic error Safety shutdown boiler temperature < the system.
- Page 56 Error Diagnostic code via Description of error Type of fault System action Procedure info Air pressure switch Burner lockout Air pressure switch Check the air pressure contacts not closed (not (permanent). Lockout contacts not closed switch. External error used) reset required Water pressure switch/ Burner lockout Check the heating...
- Page 57 Error Diagnostic code via Description of error Type of fault System action Procedure info Check programming Control board in Request for parameter Safety shutdown mode/parameter parameter setting mode programming via LPB transfers Check whether modem Modem function active Modem function active Message function is active Floor curing function...
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Page 58: Complete List Of Parameters
COMPLETE LIST OF PARAMETERS LIST OF END USER LEVEL PARAMETERS Characteristic Range Default setting Time of day 0…23.59 h/min - - - Setpoints 5 (*) Parameter not used if a room unit is connected Room temperature reduced setpoint 10…30 °C Boiler temperature reduced setpoint 30...Boiler temperature setpoint CH circuit 1 program... - Page 59 LIST OF INSTALLER LEVEL PARAMETERS Characteristic Range Default setting DHW reduced setpoint 20…DHW setpoint °C DHW program 0=according to DHW program ACS 1=24h/24h PARAMETER FIXED IN THIS MODEL DO NOT CHANGE SETTING PARAMETER FIXED IN THIS MODEL DO NOT CHANGE SETTING PARAMETER FIXED IN THIS MODEL DO NOT CHANGE SETTING THG= Automatic Summer/Winter switching temperature...
- Page 60 LIST OF MANUFACTURER LEVEL PARAMETERS Characteristic Range Default setting Minimum room temperature setpoint 10…30 °C Parameter only active if an outside temperature sensor is connected. Maximum room temperature setpoint 10…30 °C Parameter only active if an outside temperature sensor is connected. PARAMETER FIXED IN THIS MODEL DO NOT CHANGE SETTING PARAMETER FIXED IN THIS MODEL...
- Page 61 Characteristic Range Default setting Parameter with 8 bits (= b7b6b5b4b3b2b1b0) b0= PARAMETER FIXED IN THIS MODEL DO NOT CHANGE SETTING. b1=Type of building 0/1=Light/heavy duty b2=Connection of storage cylinder temperature sensor b2=1-------> Termostato bollitore (*) b2=0-------> Sonda b3= PARAMETER FIXED IN THIS MODEL DO NOT CHANGE SETTING.
- Page 62 Characteristic Range Default setting PARAMETER FIXED IN THIS MODEL DO NOT CHANGE SETTING. PARAMETER FIXED IN THIS MODEL DO NOT CHANGE SETTING. Limit to number of hours of functioning after last service 0…9998 Limit to number of burner ignitions after last service 0…9995 Limit to number of months after last service 0…255...
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Page 63: Conversion From One Gas Type To Another
44. The following pressures are required from the gas supply: - G20 gas = 20 mbar - LPG (G31) gas = 37 mbar Calibrated diaphragm diameter (Ø mm) TAU 150 UNIT TAU 210 UNIT 10,2 17,5 12,4 TECHNICAL ASSISTANCE SERVICE... - Page 64 Adjusting the gas pressure switch To ensure correct boiler functioning, adjust the pressure switch for minimum gas pressure to a value of at least 5 to 10 mbar below that of the gas supply. Proceed as follows: - Remove the screws (C) securing the pressure switch cover - Turn the knob (D) to the required value - Fit the cover back on and secure it with the screws...
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Page 65: Maintenance
MAINTENANCE Regular maintenance is a legal requirement. It is also es- - Switch the electricity supply OFF at the system's main sential for the safety, efficiency and durability of the boiler. switch and at the control panel. Proper maintenance keeps consumption and emissions - Close the fuel shut-off cocks. -
Page 66: Removing The Burner
REMOVING THE BURNER Proceed as follows to remove the burner: - Remove the front panel and the top panel from the boiler - Lower the control panel as instructed in the "Electrical connections" section - Loosen the screws (1) securing the gas feed pipe to the gas valve (2) - Remove the comburent air pipe - Disconnect the hose (4) from the boiler pressure switch... -
Page 67: Cleaning The Condensate Drain And Siphon
CLEANING THE CONDENSATE DRAIN AND SIPHON - Remove the split pin (1), detach the corrugated con- densate drain hose, and remove the siphon. Unscrew the two caps (2) to disassemble the siphon. - Remove the float (3) and clean all internal components. On completion of cleaning, follow the above steps in the reverse order to refit all removed parts. -
Page 68: Troubleshooting
TROUBLESHOOTING CAUSE SOLUTION FAULT Flame not detected The burner performs pre-ven- - Call Technical Assistance tilation and ignition correctly but shuts down after about 5 No gas supply attempts - Make sure gas shut-off cock is open The burner shuts down during Flue blocked - Check flue pre-ventilation... - Page 69 FAULT CAUSE SOLUTION - Check that all joints are tight and Leaks from the supply circuit There is a smell of gas that the pressure measurement points are closed - Check that the burner body is clean Fumes escaping into the air There is a smell of fumes - Check that the flue pipes are clean - Check the condition of the boiler seals...
- Page 70 TECHNICAL ASSISTANCE SERVICE...
- Page 72 RIELLO S.p.A. 37045 Legnago (VR) Tel. 0442630111 - Fax 0442630371 - www.riello.it As part of the company’s ongoing commitment to perfecting its range of products, the appearance, dimensions, technical data, equipment and accessories may be subject to variation.