Radiant RHR 25, Instruction Manual

Page 1: ...uctions CE 0694 RHR 25 RAD ING MAN INST 1411 1 DIGITECH_TR MIAH6 DIMA E04 Technical specification RADIANT BRUCIATORI S p A Montelabbate PU ITALY ENGLISH Instruction Manual for model RHR 25 Wall mounted instantaneous combi boiler room sealed chamber b condense ...

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Page 3: ...ments pag 11 3 3 Unpacking pag 12 3 4 Installing the boiler pag 13 3 5 Water connections pag 14 3 6 Gas connection pag 15 3 7 Electrical connections pag 16 3 8 Flue connections pag 18 4 Commissioning the appliance authorised personnel 4 1 General warnings pag 25 4 2 Filling the system pag 26 4 3 Filling the condensate trap pag 27 4 4 Frost Protection pag 28 4 5 Starting up the boiler pag 30 5 Regu...

Page 4: ...oiler inspection pag 44 6 3 Accessing the boiler pag 45 6 4 Draining the central heating system pag 46 6 5 Flue safety thermostat pag 46 6 6 Wiring diagrams pag 47 6 7 Electrical connections Option pag 48 6 8 Troubleshooting pag 50 6 9 Function codes pag 51 6 10Parts list pag 52 ...

Page 5: ... of doubt do not attempt to use the product but refer to the supplier Packing materials cardboard box wooden crate nails staples plastic bags polystyrene etc must not be left within reach of children in that these items represent a potential hazard and must be disposed of in a responsible manner Before carrying out any cleaning or maintenance operations disconnect the appliance from the mains elec...

Page 6: ...ient earth system installed in accordance with the requirements of current safety standards This fundamental safety requirement must be checked and verified In case of doubt have the electrical system checked by a qualified electrician The manufacturer will not be held liable for any damage or injury caused as a result of an ineffective or non existent earth system The domestic power supply must b...

Page 7: ...ral heating needs All boilers are fully inspected and are accompanied by a quality certificate signed by the inspector and a guarantee certificate This manual must be kept in a safe place and must accompany the boiler at all times RADIANT BRUCIATORI S p A will not be held responsible for any misinterpretation of this manual resulting from the inaccurate translation of same RADIANT BRUCIATORI S p A...

Page 8: ...ing temperature C 95 Expansion vessel capacity litres 8 Max working pressure heating bar 3 Min working pressure heating bar 0 3 Domestic Hot Water circuit D H W temperature setting min max C 35 75 Max Hot water working pressure bar 6 Min Hot water working pressure bar 0 5 D H W flow rate at T 30 C litr min 12 25 Dimensions Boiler casing size Width mm 450 Height mm 785 Depth mm 330 Weight net kg 48...

Page 9: ...CTIONS 5 785 330 115 150 185 135 210 64 5 78 70 80 102 55 5 HF CWI G HWO HR 450 125 HF CWI G HWO HR 2 2 Dimensions HR HEATING RETURN Ø3 4 HF HEATING FLOW Ø3 4 G GAS Ø3 4 CWI COLD WATER INLET Ø1 2 HWO HOT WATER OUTLET Ø1 2 ...

Page 10: ...IEF VALVE 8 PUMP 9 D H W SENSOR 10 SISTEM DRAIN VALVE 11 FLOW LIMITER 12 ELECTRONIC GAS VALVE 13 SECONDARY HEAT EXCHANGER 14 COMBUSTION CHAMBER 15 HEATING SAFETY THERMOSTAT 16 HEATING SENSOR 17 IONISTATION ELECTROCODE 18 AIR PRESSURE SWITCH 19 CONDENSATE TRAP 20 WATER PRESSURE SWITCH 21 3 WAY DIVERTER VALVE 22 FLOWSWITCH 23 WATER PRESSURE GAUGE 24 FILLING TAP 25 FLAT PLATE TYPE EXCHANGER ...

Page 11: ...INSTALLATION INSTRUCTIONS 7 2 4 Circulation pump head flow graph Pump head at minimum speed I II Pump head at second speed Pump head at maximum speed III Appliance Loss Flow m3 h Head m I II III ...

Page 12: ...RESSURE RELIEF VALVE 9 AIR VENT VALVE 10 PUMP 11 SISTEM DRAIN VALVE 12 D H W SENSOR 13 FLOW LIMITER 14 SECONDARY HEAT EXCHANGER 15 FLUE HOOD 16 AIR PRESSURE SWITCH 17 ROOM SEALED CHAMBER BACK 18 SAFETY THERMOSTAT 95 C 19 HEATING SENSOR 20 COMBUSTION CHAMBER 21 IONISTATION ELECTROCODE 22 FLAT PLATE TYPE EXCHANGER 23 BY PASS 24 CONDENSATE TRAP 25 AUTOMATIC BY PASS 26 WATER PRESSURE SWITCH 27 3 WAY D...

Page 13: ...y can show 2 different power levels according to the flame modulation of the boiler see fig 2 Error history display last 5 errors To switch the boiler OFF press INFO button the word OFF appears on the display The central heating frost protection system remains enabled If the boiler was previously ON it is switched OFF and the fan overrun and pump overrun functions are enabled 2 7 Control panel Key...

Page 14: ...t water passing through the pre heated plates of the heat exchanger reaches the water taps at the requested temperature The FastH2O function offers three advantages the hot water is immediately supplied at the requested temperature unnecessary delays are avoided by increasing the comfort of the final user water wastes are limited waiting that the water reaches the right temperature FastH2O activat...

Page 15: ...instructions form an integral part of the installation and should be left with the appliance but do not over ride in anyway statutory obligations 3 2 Boiler room Installation requirements Please refer to local and national standards in force in the Country of destination of the product In particular the manufacturer recommends The presence of threaded connections on the gas line require that the r...

Page 16: ...resent a potential hazard A Place the packed appliance on the floor see fig 1 making sure that the up arrow is facing down Remove the staples and open out the four flaps of the box B Rotate the boiler 90 while manually supporting it from underneath C Lift the box and remove the protections Lift the boiler by grasping the rear part and proceed with the installation STORAGE HANDLING Please note that...

Page 17: ...cessary clearances indicated in figure 1 are respected To make the installation easier the boiler is supplied with a template to enable the pipe connections to be positioned prior to fixing the appliance to the wall To install the boiler proceed as follows see fig 2 a Use a spirit level of not less than 25 mm long to mark a horizontal line on the wall where the boiler is to be fitted b Position th...

Page 18: ...ater supply pressure at the inlet to the boiler must be between 0 5 and 6 bar In areas with higher water inlet pressure a pressure reducing valve must be fitted before the boiler The frequency of the heat exchanger coil cleaning depends on the hardness of the mains water supply and the presence of residual solids or impurities which are often present in the case of a new installation If the charac...

Page 19: ... a 22 mm diameter pipe with an uninterrupted supply from meter to boiler and comply with current standards and regulations Check the internal and external seals of the gas supply system A gas shut off valve must be installed upstream of the appliance The gas pipe work must have and bigger or equal section to the one of the boiler Before starting up the boiler make sure that the type of gas corresp...

Page 20: ...d be protected by a 3 A fuse The connection to the mains electricity supply must be via a single pole switch with at least 3 millimetres gap between open contacts mounted upstream of the appliance Make sure that the positions of the live and neutral wires correspond to the wiring diagram Ensure the domestic power supply is checked by a qualified electrician to ensure that it can support the maximu...

Page 21: ... wires to the terminal board B as follows Connect the earth wire normally coloured green yellow to the terminal marked with the earth symbol Connect the neutral wire normally coloured blue to the terminal marked with the letter N Connect the live wire normally coloured brown to the terminal marked with the letter L Terminals identified by the letters Ta Room thermostat Se Outside temperature senso...

Page 22: ...the combustion chamber which has been specifically designed to collect and drain the acidic condensate o for the air intake the entire length of the duct slopes upwards towards the boiler to prevent the entry of rainwater dust or foreign bodies into the pipe o in case of a vertical flue pipe installation a condensate trap is fitted at the base of the flue installation and connected into drainage s...

Page 23: ... connected directly to the outside or can be connected to a suitable combined flue system MAXIMUM FLUE LENGTH 3 m The maximum flue length linear equivalent is obtained by summing the length of linear pipe and the equivalent lengths of each bend fitted The linear equivalent is intended as being the total length of the duct from the connection with the combustion chamber of the appliance excluding t...

Page 24: ...uivalent is obtained by summing the length of linear pipe and the equivalent lengths of each bend fitted The linear equivalent is intended as being the total length of the duct exhaust discharge air intake from the connection with the combustion chamber of the appliance excluding the first bend The addition of a bend has the effect of increasing the linear equivalent length of the duct as follows ...

Page 25: ... discharges the exhaust fumes MAXIMUM FLUE LENGTH 3 m The maximum flue length linear equivalent is obtained by summing the length of linear pipe and the equivalent lengths of each bend fitted The linear equivalent is intended as being the total length of the duct from the connection with the combustion chamber of the appliance excluding the first bend The linear equivalent of additional bends is a...

Page 26: ...t with graduated numbers then the upper disc Fix the flange to the flue elbow using the screw and nut provided with the flue kit Install the Ø60 aluminium collar onto the flue elbow and when it is fully assembled i e flange aluminium collar install it on the flue outlet Do not push it too strongly to avoid the elbow flange sliding up Fix the system with self tapping screws provided with the flue k...

Page 27: ...rea of the air intake hole Stick the neoprene washer paying attention to centre holes of the washer with those on the air intake opening Position flue diaphragms respecting this order lower disc first with graduated numbers then the upper disc Install the flue connector or other accessory according to the chosen type of twin pipe flue kit system Fix the system with self tapping screws provided wit...

Page 28: ...st pipes Ø100 60 kit H Separate air intake exhaust fumes discharge system through 360 Linear length Model RHR 25 from 0 5 to 1 m from 1 to 3 m MAXIMUM FLUE LENGTH 3 m Linear length Model RHR 25 from 0 5 0 5 to 7 7 m from 7 7 to 12 12 m MAXIMUM FLUE LENGTH 24 m 3 INDICATOR 5 2 1 4 FOR ADJUSTMENT DISC LOWER DISC UPPER NUMBERS UPPER DISK ADJUSTMENT NUMBERS FOR 2 1 INDICATOR 3 LOWER DISK ...

Page 29: ...ected properly Also make sure that the earth connection is sound Check the seals on the gas supply pipe from the mains and make sure that the meter does not register any flow of gas Turn the gas supply on and purge Test for gas soundness Check that the gas supply is correctly sized for the flow rate required by the boiler and that it is fitted with all the safety and control devices as lay down by...

Page 30: ...lling tap R fig 2 use the pressure gauge M fig 2 to check that the systems pressure reaches the middle of the green area equal to 1 2 bar see fig 3 On completion make sure that the filling tap R is perfectly closed Unscrew the plug on the pump to remove any trapped air check that the pump is free then re tighten it when water starts to flow out Open the air vents on the radiators and monitor the a...

Page 31: ...ows see fig 1 Remove plug T and fill the trap S three quarters full with water Replace plug T and connect the drainpipe P into a condensate discharge trap conforming to current legislation Attention It is recommended to clean the condensate trap after a few months of boiler operation to remove deposits residuals left after the first condensate passage within the boiler new components that may inte...

Page 32: ...stem operates even if the boiler is in OFF mode as long as it is electrically powered 230 V and the gas supply is open In case of long periods of inactivity it is recommended to empty the boiler and the hydraulic system Warning for the service technician In case of a boiler locked out because of freezing before putting it into operation make sure that any part is blocked by ice heat exchanger pump...

Page 33: ... the 4 resistances onto the heating flow pipe heating return pipe cold water pipe and domestic hot water pipe with the exception of the gas pipe See Fig 1 c Protect the pipes with isolating material d Connect the thermostat to the heating flow pipe using the supplied clip See Fig 1 e Connect the power supply cables to the terminal board located onto the control panel and following the wiring instr...

Page 34: ...pressing the reset button Check minimum and maximum gas pressure setting values Make sure that they comply with those stated on the gas data plate see paragraph 5 4 Gas Data Gas pressure adjustment table to check the maximum gas pressure value turn ON the hot water tap at the maximum flow and check that the maximum pressure value corresponds to that stated on the gas data plate to check the minimu...

Page 35: ...0 P06 D H W storage cylinder pump overrun timer Not applicable to instantaneous boilers w dual circuit exchanger and only heating boilers 00 90 Displayed in multiples of 5 seconds default value 18 x 5 90 P07 Minimum central heating output 00 Max gas P08 Displayed in P08 Sets the maximum central heating output and maximum gas pressure Min gas P07 99 Displayed in P09 Sets the ignition sequence 00 99...

Page 36: ...n OFF position 2 Keep pressed and buttons simultaneously and wait for P 00 to appear on the display 3 Release buttons and 4 Use and buttons of heating temperature setting to select the parameter to modify 5 Press mode selection button and release it The display will indicate the value of the parameter to modify Adjust the value of the parameter using the procedure described in the following pages ...

Page 37: ... THE TYPE OF GAS SUPPLY To enter the parameters menu follow the previously described procedure see paragraph 5 2 Accessing the parameters menu steps 1 5 6 Use and buttons D H W temperature setting to modify the value of the parameter 00 Natural Gas 01 LPG 7 Press mode selection button to confirm and to render the new adjustment operative The parameter number P01 will appear on the display 8 To exi...

Page 38: ...PARAMETER P04 CENTRAL HEATING TIMER This parameter is used to set the minimum time in which the burner is kept switched off once the heating flow temperature has exceeded the temperature set by the user To enter the parameters menu follow the previously described procedure see paragraph 5 2 Accessing the parameters menu steps 1 5 6 Use and buttons D H W temperature setting to modify the value of t...

Page 39: ...P05 will appear on the display 8 To exit from the parameters menu press simultaneously and buttons PARAMETER P06 D H W STORAGE CYLINDER PUMP OVERRUN TIMER Not applicable to instantaneous boilers w dual circuit exchanger This parameter is used to set the pump functioning time in D H W mode after closing the water tap To enter the parameters menu follow the previously described procedure see paragra...

Page 40: ...button for 7 seconds until the number 07 flashes on the display chimney sweeper function In this way the boiler will run at maximum heating power for 15 minutes The pressure gauge will indicate the gas pressure If this pressure value is different to that on the rating plate of the boiler see paragraph 5 4 Gas Data remove the modulator plastic cap A fig 1 and screw in the nut C to adjust the maximu...

Page 41: ... Data use and buttons D H W temperature setting to modify the value of the parameter The range of settings is 00 80 13 Press mode selection button to confirm and to render the new adjustment operative The parameter number P07 will appear on the display 14 Press simultaneously and buttons until OFF appears on the display 15 Disconnect the pressure gauge from the pressure tale off point B on the gas...

Page 42: ...ain the diverter valve on D H W mode for a time equal to the post circulation keeping hot the secondary heat exchanger To enter the parameters menu follow the previously described procedure see paragraph 5 2 Accessing the parameters menu steps 1 5 6 Use and buttons D H W temperature setting to modify the value of the parameter 00 Off 01 On 7 Press mode selection button to confirm and to render the...

Page 43: ...um flow temperature Tm and the minimum outdoor temperature Te taking into consideration the house insulation degree The values of the flow temperature Tm refer to standard 30 80 C appliances or 25 45 C for under floor heating systems The type of appliance can be set using parameter P02 To enter the parameters menu follow the previously described procedure see paragraph 5 2 Accessing the parameters...

Page 44: ...r number P13 will appear on the display 8 To exit from the parameters menu press simultaneously and buttons PARAMETER P14 CENTRAL HEATING MAXIMUM SET POINT This parameter is used to set the central heating maximum user set point To enter the parameters menu follow the previously described procedure see paragraph 5 2 Accessing the parameters menu steps 1 5 6 Use and buttons D H W temperature settin...

Page 45: ...t operative The parameter number P15 will appear on the display 8 To exit from the parameters menu press simultaneously and buttons PARAMETER P16 POST VENTILATION This parameter is used to set the fan functioning time after switching off the burner To enter the parameters menu follow the previously described procedure see paragraph 5 2 Accessing the parameters menu steps 1 5 6 Use and buttons D H ...

Page 46: ...3 x 0 77 13 x 0 77 Consumption 15 C 1013 mbar m 3 h 2 75 Consumption 15 C 1013 mbar kg h 2 05 2 02 Gas pressure adjustment table 5 6 Heating output maximum pressure diagram 16 17 18 19 20 21 23 24 25 26 27 28 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 35 36 G 20 G 30 G 31 Gas pressure in mbar Output capacity in kW Natural Gas G20 Liquid Butane Gas G30 Liquid Propane Gas G31 min max min max m...

Page 47: ... are dismantled and reassembled 6 select the new gas type by changing parameter P01 see Parameters table 5 1 7 to convert the appliance from L P G to Natural Gas proceed with the min and max gas pressure adjustment see Gas Valve adjustment 5 3 8 to convert the appliance from Natural Gas to L P G proceed as follows remove the modulator plastic cap A fig 1 and screw in the nut 12 using a 10mm spanne...

Page 48: ...eck that the combustion is correctly regulated and if necessary proceed in line with section Commissioning the boiler Remove and clean any oxidation from the burner Check that the seal of the room sealed chamber is undamaged and positioned correctly Check the primary heat exchanger and clean if necessary Check the maximum and minimum modulation pressures and the modulation itself Check the conditi...

Page 49: ...Left and right side panel Remove the fixing screws at the front and lower edge of the side panel to remove Grasp the bottom of the panel move it sideways and then upwards to remove it To access the electrical connections of the control panel proceed as follows Switch off the power supply at the main switch Remove the front panel see fig 1 and fig 2 Grasp the left and right control panel support br...

Page 50: ...viously opened taps 6 5 Flue safety thermostat Water heater is equipped with a device to control correct exhaust of combustion gases This device guarantees maximum safety of operation and comes into operation to cut off the flow of gas to the main burner to make the water heater safe if the flue becomes partially or totally blocked or if its section is not suitable for exhaust of combustion gases ...

Page 51: ...ing diagrams DIGITECH TR Printed Circuit Board MIAH6 Key TRA Ignition transformer ER Ionisation electrode EA Ignition electrode VG Gas valve MD Modulator C Circulating pump PA Air pressure switch TS Safety thermostat TF Flue Safety thermostat SF Condensate trap SR Heating sensor SS D H W sensor MF Flowswitch micro Pacq Water pressure switch EV Fan VD 3 Way diverter valve MP Terminal board SE Outdo...

Page 52: ...t or telephone control removing the jumper Ta Ta from the terminal board B first and then connecting the room thermostat telephone control wires d When wires have been connected place plate A back to position and then the front case panel In case of a simultaneously outdoor temperature sensor and remote control installation the printed circuit board sends the outdoor temperature value to the remot...

Page 53: ...ption only if parameter P00 2 3 or 4 CT Telephone control SRB Remote boiler Lock Out indicator Option SVZ Zone Valves Management PCB if Remote control is installed TAZ 1 ZONE 1 Room thermostat TAZ 2 ZONE 2 Room thermostat VZ1 Zone valve 1 VZ2 Zone valve 2 VZR Zone valve Remote control FC Zone valve limit switch ...

Page 54: ...ION ELECTRODE CABLE Manual Reset press the Reset button E02 SAFETY THERMOSTAT TRIPPED i THERMOSTAT MALFUNCTION OR OUT OF CALIBRATION j THERMOSTAT CABLE DISCONNECTED i REPLACE PART j CHECK THE WIRING Manual Reset press the Reset button E03 FLUE SAFETY THERMOSTAT k THERMOSTAT BROKEN l THERMOSTAT CABLE DICONNECTED m THERMOSTAT LOCK OUT HIGH FLUE TEMPERATURE k REPLACE PART l CHECK THE ELECTRICAL CONNE...

Page 55: ...ure detected by the sensor is 8 C in the D H W circuit or 30 C in the central heating circuit ERROR CODE PROBLEM POSSIBLE CAUSE REMEDY RESET E17 MODULATOR x GAS VALVE MODULATOR OUT OF ORDER x REPLACE PART Manual Reset Switch off the power supply E18 INADEQUATE CIRCULATION y PRIMARY OR SECONDARY HEAT EXCHANGER OBSTRUCTED z PUMP MALFUNCTION OR PUMP IMPELLER DIRTY y CLEAN OR REPLACE PART z CLEAN OR R...

Page 56: ...44LA CONDENSATE TRAP 30 00024 AIR PRESSURE SWITCH 3 28 2 98 30 00035 GAS VALVE SIT 35007LA IGNITION ELECTRODE 35009LA IONISATION ELECTRODE 40 00078 PRINTED CIRCUIT BOARD MIAH6 40 00064 FAN 58034LA SECONDARY HEAT EXCHANGER 59015LA WATER PRESSURE SWITCH 73507LA 1 8 IMMERSED WHITE SENSOR 73516LA HTG CLIP SENSOR FOR PIPE 17 18 mm RED 86006LA SAFETY THERMOSTAT 95 C 86028LA FLUE SAFETY THERMOSTAT 100 C ...

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Page 58: ... THE COMPANY RESERVES THE RIGHT TO APPLY VARIATIONS WITHOUT PRIOR NOTIFICATION NEITHER WILL THE COMPANY BE HELD RESPONSIBLE FOR ANY INACCURACIES IN THIS HANDBOOK DERIVING FROM PRINTING OR TRANSLATION ERRORS E OEALL RIGHTS RESERVED NO PART OF THIS DOCUMENT MAY BE REPRODUCED MEMORISED IN ANY FILING SYSTEMS OR TRANSMITTED IN ANY FORM WHATSOEVER INCLUDING ELECTRONIC MECHANICAL PHOTOCOPIES RECORDINGS O...