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MAINTENANCE INSTRUCTIONS

4.3 Frost Protection

The boiler is protected from freezing by electronic board settings and special functions that provide the

starting of the burner to heat all the interested parts, when their temperature drops below the minimum

preset values, protecting the boiler up to an external temperature of -10°C.

The device operates as follows:

•

The heating circuit water temperature drops below 5 °C, the burner is automatically switched ON until the water

reaches a temperature of 30°C.

•

The domestic hot water temperature drops below 4°, the burner is automatically switched ON until the water

reaches a temperature of 8°C.

The system 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, etc.).

Warning for the installer

In case of an outdoor boiler installation, where temperatures can drop below -10°C, it is recommended to fill the

hydraulic system with an antifreeze inhibitor (see below Table for the dilution percentage) and to install a Heating

element kit (code 82259LP).

Table

Antifreeze

Temperature

Ethylene glycol

(%) volume

freezing point

(°C)

boiling point

(°C)

- 4

101

- 10

102

- 17

104

- 27

106

- 40

109

- 47

114

Recommended Glycol 20% percentage for temperatures up to – 10° C.

Содержание RSA 24 /8

Страница 1: ...ce instructions CE 0694 RSA 24 8 RAD ING MAN INST 1410 1 DIGITECH TR MIAH6 E04 Technical specification RADIANT BRUCIATORI S p A Montelabbate PU ITALY ENGLISH Instruction Manual for model RSA 24 8 Wall...

Страница 2: ......

Страница 3: ...3 3 Unpacking pag 12 3 4 Installing the boiler pag 13 3 5 Water connections pag 14 3 6 D H W circulating loop pag 15 3 7 Gas connection pag 16 3 8 Electrical connections pag 17 3 9 Flue connections p...

Страница 4: ...ngs pag 44 6 2 Boiler inspection pag 44 6 3 Accessing the boiler pag 45 6 4 Draining the central heating system pag 46 6 5 Wiring diagrams pag 47 6 6 Electrical connections Option pag 48 6 7 Troublesh...

Страница 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 i...

Страница 6: ...ent 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...

Страница 7: ...al 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 acco...

Страница 8: ...75 Max Hot water working pressure bar 6 Min Hot water working pressure bar 0 5 D H W 40 C water supply t 30 C for 1 hour litres 690 Max D H W 40 C water supply t 30 C first 10 minutes litres 130 Stora...

Страница 9: ...CTIONS 5 450 330 147 43 140 72 115 263 G 60 102 72 78 78 60 125 G 785 820 HR HWO CWI HF HR HWO CWI HF 2 2 Dimensions HR HEATING RETURN 3 4 HF HEATING FLOW 3 4 G GAS 3 4 CWI COLD WATER INLET 1 2 HWO HO...

Страница 10: ...LVE 8 PUMP 9 3 bar PRESSURE RELIEF VALVE 10 ELECTRONIC GAS VALVE 11 SISTEM DRAIN VALVE 12 BY PASS 13 ANODE 14 AIR PRESSURE SWITCH 15 SAFETY VALVE 1 2 8 atm 16 STORAGE CYLINDER 17 HEATING SENSOR 18 D H...

Страница 11: ...CTIONS 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 III II I 0 1 2 3 4 5 6 0 0 5 1 1...

Страница 12: ...Y THERMOSTAT 8 FLAME IONISATION ELECTRODE 9 IGNITION ELECTRODE 10 COMBUSTION CHAMBER 11 BURNER 12 ELECTRONIC GAS VALVE 13 AIR VENT VALVE 14 PUMP 15 3 bar PRESSURE RELIEF VALVE 16 SISTEM DRAIN VALVE 17...

Страница 13: ...w 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...

Страница 14: ...ue will appear on the centre of the display Use and buttons of Heating Temperature setting to scroll the list of available data Press the INFO button to exit the display mode The list of available dis...

Страница 15: ...nstructions 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...

Страница 16: ...esent 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...

Страница 17: ...essary 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 applian...

Страница 18: ...ary The cold water 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 fre...

Страница 19: ...TALLATION INSTRUCTIONS 15 3 6 D H W circulating loop In order to joint the D H W out loop pipe proceed as follows a unscrew the cap A and insert a nipple b joint the nipple to the D H W circulating pi...

Страница 20: ...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...

Страница 21: ...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...

Страница 22: ...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 term...

Страница 23: ...tant to provide for horizontal air intake flue exhaust pipes a minimum slope of 2 downwards from the boiler towards the external wall see fig 1 For each individual installation air intake and flue exh...

Страница 24: ...r 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 e...

Страница 25: ...d 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 conn...

Страница 26: ...FLUE LENGTH 6 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 th...

Страница 27: ...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 60 aluminium collar onto the flue elbow and when it is full...

Страница 28: ...ea 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...

Страница 29: ...fumes discharge system through 360 MAXIMUM FLUE LENGTH linear length DIAPHRAGM REGULATION from 0 5 to 1 m from 1 to 2 m from 2 to 3 m Remove tags MAXIMUM FLUE LENGTH 3 m MAXIMUM FLUE LENGTH linear len...

Страница 30: ...cted 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...

Страница 31: ...y Check that the plug of the air vent valve has been slackened slightly to allow air to escape from the system fig 1 Open the filling tap R fig 2 use the pressure gauge M fig 2 to check that the syste...

Страница 32: ...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 Wa...

Страница 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...

Страница 34: ...ressing 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 tab...

Страница 35: ...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...

Страница 36: ...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 mod...

Страница 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 m...

Страница 38: ...ARAMETER 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 use...

Страница 39: ...05 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...

Страница 40: ...utton 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...

Страница 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...

Страница 42: ...in 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 paragra...

Страница 43: ...m 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...

Страница 44: ...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 hea...

Страница 45: ...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...

Страница 46: ...15 x 0 78 Consumption 15 C 1013 mbar m 3 h 2 71 Consumption 15 C 1013 mbar kg h 2 02 1 99 Gas pressure adjustment table 5 6 Heating output maximum pressure diagram 0 2 4 6 8 10 12 14 16 18 20 22 24 26...

Страница 47: ...re 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 pressur...

Страница 48: ...ck 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 seal...

Страница 49: ...eft 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 ele...

Страница 50: ...em If there is a danger of freezing the domestic hot water system should be drained This can be done as follows Close the mains water supply valve Joint the water draining pipe and open the cylinder d...

Страница 51: ...ce ne C SS 6 5 Wiring 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 pr...

Страница 52: ...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 p...

Страница 53: ...tion 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 ZO...

Страница 54: ...D h THERMOSTAT MALFUNCTION OR OUT OF CALIBRATION i THERMOSTAT CABLE DISCONNECTED h REPLACE PART i CHECK THE WIRING Manual Reset press the Reset button E03 AIR PRESSURE SWITCH j SWITCH OUT OF ORDER k I...

Страница 55: ...The function is disabled when the temperature detected by the sensor is 8 C in the D H W circuit or 30 C in the central heating circuit F28 Legionella Prevention Function Function active for storage...

Страница 56: ...VE HTG CIRC 25 00196 WATER PRESSURE GAUGE 30 00023 AIR PRESSURE SWITCH 2 14 1 96 30 00035 GAS VALVE SIT 35007LA IGNITION ELECTRODE 35009LA IONISATION ELECTRODE 37016LA FAN 40 00078 PRINTED CIRCUIT BOA...

Страница 57: ...A WASHER D 15x8x2 3 8 AFM34 43135LA 3 WAY VALVE WASHER 43139LA PLATE EXCHANGER O RING 43145LA 3 WAY VALVE MOTOR O RING MULTIPLEX 43150LA SEAL O RING 43151LA BY PASS O RING 43159LA WASHER EPDM 80 SH M...

Страница 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 E...

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