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Summary of Contents for Riello TAU 35 UNIT
- Page 1 TAU 35 UNIT EN USER MANUAL...
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Page 2: Table Of Contents
CONTENTS GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Precautions . - Page 3 Dear heating engineer, Congratulations on having chosen a boiler. You have selected a modern, quality product that is designed to give dependable, efficient and safe service and to provide comfort in the home for many years to come. This manual pro- vides 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.
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Page 4: General
GENERAL GENERAL 1 . 1 Precautions The operation of any appliance that uses electrical power demands that a number of fundamental safety precautions be respected. Do not allow children or in- Never pull, disconnect, or twist the electrical cables firm persons to operate coming from the boiler even if it is disconnected the boiler unsupervised. from the mains electricity supply. Do not operate any Do no obstruct or restrict the vents in the room electrical devices where the appliance is installed. Adequate venti- equipment, including lation is essential for correct combustion. switches or domestic ap- Do not leave flammable sub- pliances, etc., if you can stances or containers in the... -
Page 5: User
USER 2 USER 2 . 1 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. Restores normal functioning after a safety shutdown. Chimney sweep mode selection. Press and hold keys 3 and 4 (for between 3 and 6 seconds) to enter chimney sweep mode. Parameter selection keys Parameter selection keys 9 Value decrement/increment keys 10 Value decrement/increment keys Info key 12 Display 13 Functioning mode selection button. A line appears under the symbols: s Automatic: the boiler functions according to the set program o Daytime: the boiler operates at daytime (comfort) setpoint l Night-time: the boiler operates at night-time (reduced) setpoint b Stand-by 14 Housing for controller (accessory) 15 Main switch... - Page 6 USER 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 Daytime CH mode Night-time CH mode Flame detected...
- Page 7 USER MAIN SCREEN Functioning mode. Press the key to activate the various modes, as shown by the line under the corresponding symbol . DHW mode . Press the key to activate and deactivate DHW mode. Daytime CH mode Time of day Current boiler temperature Water pressure (not used) Flame detected Current time bar CH mode active DHW mode active Notes on functioning The control panel on the TAU UNIT boiler controls the following functions: − The DHW priority function. This ensures that the − Overtemperature dispersal function. If the tem- boiler can still serve the central heating circuit perature threshold thermostat trips (86°C) the even when domestic hot water is drawn off.
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Page 8: Programming Levels
USER 2 .2 Programming levels There are three programming levels: − End user − Installer − Manufacturer. You must follow a precise set of instructions to access any of these levels. The relevant instructions, complete with a list of the keys to press, are provided in the tables below. END USER LEVEL This level provides the parameters needed by the end user. For example, it contains parameters for setting CH and DHW functioning times and Summer/Winter mode switching temperature. See the “Complete list of parameters” section for further details. Explanation Press one of these keys to access the END USER programming level Press one of these keys until you reach the parameter you require: the example here shows the parameter Pxx 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 end user programming level. - Page 9 USER Functioning phases (table 1) Displayed Description 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) Home run = Boiler status after reset . EXTENDED INFORMATION LEVEL 1: temperatures Press the key .
- Page 10 USER 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 Description Reserved Ionisation current C 2 Fan speed C 3 Fan control current (PWM) C 4 Relative boiler heat output C 5 Pump setpoint C 6 Differential control Reserved Reserved C 9 Reserved EXTENDED INFORMATION LEVEL 3: assistance...
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Page 11: Preparing For Initial Start-Up
USER 2 .4 Preparing for initial start-up It is essential to perform the following checks before starting up or testing the functioning of the boiler. − Check that the water and fuel shut-off cocks are open. − Check that the water pressure gauge shows a pressure over 1 bar with the system cold. Check also that the water circuit is properly de-aerated. − Check that the expansion vessel is correctly pre- charged. − Check that the electrical connections have been made correctly. − Check that the vent and air intake pipes have been correctly installed and connected. If you need to convert the boiler from METHANE to LPG, contact r’s Technical Assistance Service. 2 .5 Initial start-up −... - Page 12 USER − Set the room thermostat to the desired tempe- rature (20°C). − Press the key: − If an outdoor temperature sensor is con- nected, set the room temperature setpoint − If no outdoor temperature sensor is con- nected, set the central heating circuit tempe- rature setpoint. Press the keys to adjust the setpoint R T M V Press any of the keys to exit: The new setting is stored in memory . If a remote storage cylinder (accessory) is present, con- nect the storage cylinder temperature sensor to the control panel and set the manufacturer level parameter...
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Page 13: Temporary Shutdown
USER 2 .6 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) appe- ars 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- tion function. Boiler frost protection: If boiler temperature falls below 5°C, the burner ignites and runs at full power until tem- perature reaches 10°C. CH frost protection: This function is only active if an out- side temperature sensor is connected. If outside tem- perature drops below -5°C the pumps are switched on. If outside temperature is between -4° and 1.5°C, the pumps are switched on for 10 minutes at intervals of 6 hours. If outside temperature is above 1.5°C the pumps are switched off. 2 . 7 Preparing for extended periods of disuse If the boiler is not going to be used for an extended pe- riod of time, proceed as follows to prepare it for shut- down . -
Page 14: Error Codes
USER 2 .8 Error codes TEMPORARY ERROR DISPLAY − If a temporary error occurs, the display alterna- tes 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 simulta- neously for 3 seconds. The internal error code is displayed. − Press the key to access the information le- vel . − Press the key to return to the main screen. - Page 15 USER PERMANENT ERROR DISPLAY − If a permanent error occurs, the error code flashes on the main display. The controller per- forms a safety shutdown. Example: E154. − Press the key to display the error code on the main display. − Press and hold the keys simulta- neously for 3 seconds. The internal error code is displayed. Example: 435 . − Press the key to access the information le- vel . − Press the key to return to the main screen.
- Page 16 USER ERROR TABLE Error Type Description No input code Outdoor temperature sensor error Boiler sensor 1 error Flue gas sensor error CH flow sensor 2 error CH return sensor 1 error DHW 1 temperature sensor error DHW 2 sensor error Room unit 1 error Room unit 1 or timer connection error Solar collector sensor error (if solar clip-in option is installed - accessory) Air pressure switch error Water pressure switch error LPB communication error LPB address error EEPROM data loss Electronic device errors Invalid date Two master clocks found Maintenance message Permanent...
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Page 17: Complete List Of Parameters
USER 2 . 9 Complete list of parameters LIST OF END USER LEVEL PARAMETERS Default N° Description Range Time of day 0…23.59 h/min Setpoints 5 (*) Line 5 will be hidden when using an additional room unit: Reduced room temperature setpoint 10…30 °C Reduced boiler temperature setpoint 30...boiler temperature setpoint CH circuit 1 program Switch-on time 1st phase 00:00…24:00 hh:mm... -
Page 18: Cleaning
USER 2 . 1 0 Cleaning Use a cloth damped in soapy water to clean the boiler's external casing. To remove stubborn marks, use a cloth damped in a 50% mix of water and denatured alcohol or a suitable cleaning product. Wipe the boiler dry after cleaning it. Remove the protective film (F) from the front panel and control panel before you start cleaning the boi- ler's casing panels. The combustion chamber and flues must be clea- ned periodically by 's Technical Assistance Ser- vice or by a qualified heating engineer. Do not use abrasive products, petrol or triethylene. Never clean or service the boiler without first di- sconnecting it from the mains electricity supply by turning the main power switch OFF . 2 . 1 1 Maintenance Please remember that THE PERSON RESPONSIBLE FOR SY- STEM MANAGEMENT MUST ENSURE THAT PROFESSIONALLY QUALIFIED HEATING ENGINEERS UNDERTAKE PERIODIC MAIN- TENANCE AND COMBUSTION EFFICIENCY MEASUREMENTS. - Page 19 USER...
- Page 20 RIELLO S.p.A. 37045 Legnago (VR) Tel. 0442630111 - Fax 044222378 - 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.
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