Alarko SERADENS SRD 20 Installation, Operating And Maintenance Instructions Download Page 17

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3.4 Water Circuit

LEGEND

1. PRIMARY CONDENSING HEAT EX-

CHANGER

PREMIX BURNER UNIT (GAS
MBURNER)

3. CONDENSATE DRAIN PIPE

4. IONISATION ELECTRODE

5. IGNITION ELECTRODE

6. FAN

7. VENTURI

8. IGNITION TRANSFORMER

9. ELECTRONIC GAS VALVE

10. 3 BAR PRESSURE RELIEF VALVE -

HTG CIRCUIT

11. AUTOMATIC AIR VENT VALVE

12. HEATING SAFETY THERMOSTAT

13. HEATING SENSOR

14. PUMP WITH AIR VENT

15. WATER PRESSURE SWITCH

16. FLUE HOOD

17. SAFETY THERMO FUSE

18. EXPANSION VESSEL

19. D.H.W. SENSOR

20. CONDENSATE TRAP

21. WATER PRESSURE GAUGE

22. AUTOMATIC BY-PASS

23. CONDENSATE DRAIN PIPE

24. SYSTEM DRAIN VALVE

25. ROOM SEAL CHAMBER BACK SIDE

26. FLOW LIMITER

27. ELECTRONIC FLOWSWITCH

28. DHW EXCHANGER

29. 3-WAY VALVE

30. FILLING TAP

LEGEND

HEATING RETURN

HEATING FLOW

GAS

CWI

COLD WATER INLET

HWO

HOT WATER OUTLET

CONDENSATE DRAIN

CWI

HWO

Summary of Contents for SERADENS SRD 20

Page 1: ...SERADENS SRD 20 27 36 PREMIX CONDENSING BOILER INSTALLATION OPERATING and MAINTENANCE INSTRUCTIONS...

Page 2: ...Code No A 1 4 3 Publishing Date 241109 Revision Date 241109...

Page 3: ...ic Control Devices 12 2 9 Use With Lpg 12 2 10 Periodic Maintenance 12 3 TECHNICAL CHARACTERISTICS 13 3 1 Technical Data 13 3 2 Dimensions 14 3 3 Internal Parts of the Boiler 16 3 4 Water Circuit 17 3...

Page 4: ...BOILER Authorised Service 38 6 1 Parameter Table 38 6 2 Setting the Parameters 39 6 3 Gas Data 45 7 MAINTENANCE Authorised Service 48 7 1 General Warnings 48 7 2 Boiler Inspection 48 7 3 Accessing th...

Page 5: ...characteristics Thank you for choosing ALARKO brand This booklet covers premix condensing boiler model SRD 20 27 36 natural gas LPG combination boilers in SERADENS boiler range In this booklet you wi...

Page 6: ...safety standards This fundamental safety requirement must be checked and verified In case of doubt have the electrical system checked by a quali fied electrician The manufacturer will not be held lia...

Page 7: ...e kept in a safe place and must accompany the boiler at all times ALARKO CARR ER will not be held responsible for any misinterpretation of this manual resulting from the inaccurate translation of same...

Page 8: ...can supply detailed information about those limitations from your installer For your own safety do not ask the installer to install your boiler to prohibited spaces Before gas installation a suitable...

Page 9: ...Service Your boiler is under guarantee for material and production errors as written on its Guarantee Form The guarantee is only valid as all the rules and warnings in this booklet are obeyed Guarante...

Page 10: ...MMER WINTER mode press button 6 See fig 1 The boiler will work for both central heating D H W systems The SUMMER WINTER mode setting of the boiler is signalled by the symbol lit continuously on the co...

Page 11: ...e Centre Water Pressure Switch Tripped Code H2O lit continuously on the display Check the water pressure in the central heating circuit The reading on the pressure gauge M see fig 2 located on the low...

Page 12: ...lector kit manufactured by Alarko Carrier In cold environments the use of a special heater kit manufactured by Alarko Carrier is recommended for economic and safe use In case thermostatic hot water bu...

Page 13: ...0 3 Domestic Hot Water circuit D H W temperature setting min max C 35 60 35 60 35 60 Max Hot water working pressure bar 6 6 6 Min Hot water working pressure bar 0 5 0 5 0 5 D H W flow rate at T 30 C l...

Page 14: ...14 3 2 Dimensions SRD 20 27 LEGEND HR HEATING RETURN 3 4 HF HEATING FLOW 3 4 G GAS 1 2 CWI COLD WATER INLET 1 2 HWO HOT WATER OUTLET 1 2...

Page 15: ...15 SRD 36 LEGEND HR HEATING RETURN 3 4 HF HEATING FLOW 3 4 G GAS 1 2 CWI COLD WATER INLET 1 2 HWO HOT WATER OUTLET 1 2...

Page 16: ...6 FAN 7 VENTURI 8 IGNITION TRANSFORMER 9 ELECTRONIC GAS VALVE 10 3 BAR PRESSURE RELIEF VALVE HTG CIRCUIT 11 AUTOMATIC AIR VENT VALVE 12 HEATING SAFETY THERMOSTAT 13 HEATING SENSOR 14 PUMP WITH AIR VE...

Page 17: ...4 PUMP WITH AIR VENT 15 WATER PRESSURE SWITCH 16 FLUE HOOD 17 SAFETY THERMO FUSE 18 EXPANSION VESSEL 19 D H W SENSOR 20 CONDENSATE TRAP 21 WATER PRESSURE GAUGE 22 AUTOMATIC BY PASS 23 CONDENSATE DRAIN...

Page 18: ...Circulation Pump Head Flow Graph SRD 20 Head kPa Flow l h II III I SRD 27 Appliance Loss III Pump head at maximum speed Pump head at second speed II I Pump head at minimum speed Head kPa Flow l h II...

Page 19: ...19 SRD 36 III II I Flow l h Head kPa Appliance Loss III Pump head at maximum speed Pump head at second speed II I Pump head at minimum speed...

Page 20: ...erature setting 35 60 C Summer only mode Winter only mode Summer Winter mode selection Selection of compensation curve according to outside temperature if an optinal outdoor sensor is connected Operat...

Page 21: ...atutory obligations 4 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 recommen...

Page 22: ...t the symbol is on the top Open the box cutting the packaging bands Take the appliance with the nylon wrapping out of the cardboard box After taking the appliance out of ist nylon wrapping remove the...

Page 23: ...er to allow access to the interior of the boiler for maintenance purposes it is impor tant that the necessary clearances indicated in figure 4 are respected To make the installation easier the boiler...

Page 24: ...t scaling and eventual damage to the D H W heat exchanger the mains water supply must not have a hardness rating of more than 17 5 French hardness value It is nevertheless advisable to check the prope...

Page 25: ...ck to make sure that the appliance has an efficient earth system This requirement is only satisfied if it has been properly connected to an efficient earth system installed in accord ance with the req...

Page 26: ...c Slacken the screws and remove plate A see fig 7 d With the plate removed connect the wires to the terminal board B as follows Connect the earth wire normally coloured green yellow to the terminal m...

Page 27: ...of the duct slopes upwards towards the boiler to prevent the entry of rainwater dust or foreign bodies into the pipe in case of a vertical flue pipe installation a conden sate trap is fitted at the b...

Page 28: ...e outside or can be con nected to a suitable combined flue system MAXIMUM FLUE LENGTH 6 m SRD 20 5 m SRD 27 The maximum flue length linear equivalent is obtained by summing the length of linear pipe a...

Page 29: ...the out side or can be connected to a suitable com bined flue system MAXIMUM FLUE LENGTH 8 m The maximum flue length linear equivalent is obtained by summing the length of linear pipe and the equivale...

Page 30: ...summing the length of linear pipe and the equivalent lengths of each bend fitted The linear equivalent is intended as be ing the total length of the duct exhaust discharge air intake from the connec...

Page 31: ...31 80 48 5 313 48 5 111 5 187 111 5 80 163 137 122 106 131 SRD 36...

Page 32: ...discharges the exhaust fumes MAXIMUM FLUE LENGTH 6 m SRD 20 5 m SRD 27 The maximum flue length linear equiva lent is obtained by summing the length of linear pipe and the equivalent lengths of each be...

Page 33: ...r duct discharges the ex haust fumes MAXIMUM FLUE LENGTH 8 m The maximum flue length linear equivalent is ob tained by summing the length of linear pipe and the equivalent lengths of each bend fitted...

Page 34: ...ion 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...

Page 35: ...radiators close the air vents Use the pressure gauge M fig 11 to check that the system pressure reaches 1 1 5 bar and that the code H2O does NOT appear on the control panel display see 2 7 section Con...

Page 36: ...omestic hot water circuit a Open all hot water outlets b Turn on inlet group supply so water enters the boiler leave to fill until water is released from the hot water outlets Turn off all hot water o...

Page 37: ...o light the boiler To re set the boiler Switch off switch 1 see 3 7 Control Panel and switch it back on again and repeat the lighting procedure With the boiler ignited if the system still emits noises...

Page 38: ...d 30 80 C 01 Reduced 25 40 C P04 Heating output rising time 00 01 default 02 03 04 00 0 sec 01 50 sec 02 100 sec 03 200 sec 04 400 sec P05 VVater hammer prevention function 00 01 00 Off 01 On P06 D H...

Page 39: ...ch while keeping buttons and pressed Wait for P 00 to appear on the display 3 Release buttons and 4 Keep button S pressed and use button to select the parameter to modify 5 Release button S then re pr...

Page 40: ...P01 will appear on the display 8 Switch off the appliance and switch it back on again to render the new parameter operative PARAMETER P02 SELECTS THE TYPE OF GAS 6 Use buttons and to modify the value...

Page 41: ...01 on default 2 s 7 Press and release button S to confirm The parameter number P05 will appear on the display 8 Switch off the appliance and switch it back on again to render the new parameter operat...

Page 42: ...rescribed limits 00 0 x 5 s 0 s 90 90 x 5 s 450 s 7 5 min The default value is 36 180 s 3 min 7 Press and release button S to confirm The parameter number P08 will appear on the display 8 Switch off t...

Page 43: ...itch it back on again to render the new parameter operative PARAMETER P12 MINIMUM FAN SPEED SETTING CENTRAL HEATING 6 Use buttons and to modify the value of the parameter be tween min 33 Hz max 133 Hz...

Page 44: ...nder the new parameter operative PARAMETER P16 TELEPHONE CONTROL ACTIVATION 6 If a telephone interface is installed enable the board by setting parameter P16 at 01 7 Press and release button S to conf...

Page 45: ...UID BUTANE GAS G30 LIQUID PROPANE GAS G31 Indice di Wobbe inferiore 15 C 1013 mbar MJ Nm3 45 67 80 58 70 69 Pressione nominale di alimentazione mbar 20 30 37 Consumi 15 C 1013 mbar m3 h 1 90 Consumi 1...

Page 46: ...S G30 LIQUID PROPANE GAS G31 Indice di Wobbe inferiore 15 C 1013 mbar MJ Nm3 45 67 80 58 70 69 Pressione nominale di alimentazione mbar 20 30 37 Consumi 15 C 1013 mbar m3 h 2 65 Consumi 15 C 1013 mbar...

Page 47: ...Gas data table NATURAL GAS G20 LIQUID BUTANE GAS G30 LIQUID PROPANE GAS G31 Lower Wobbe index 15 C 1013 mbar MJ Nm3 45 67 80 58 70 69 Nominal Supply pressure mbar 20 30 37 m3 h 3 6 Consumption 15 C 1...

Page 48: ...er 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...

Page 49: ...port brackets see fig 18 and pull them outwards at the same time rotating the panel downwards Unscrew the four fixing screws see fig 19 and remove the panel back piece 7 4 Flushing Out The Primary Sid...

Page 50: ...rting with the highest and moving down the system to the lowest When the system has been drained close the radiator breather valves and the drain valve If only the boiler needs to be drained close the...

Page 51: ...his instruction For all maintenance operations requiring removal of the boiler casing refer to the procedures described in paragraph 7 3 Accessing the boiler 7 6 Maintenance Operations ignition electr...

Page 52: ...thout alter ing their positions with respect to the burn er Clean the burner cylinder using a non metal brush and without damaging the ceramic fibre Check the integrity of the washer on the cover of b...

Page 53: ...he system with water and check for any leaks from the joints Part replacement Ignition and or flame detection electrodes see fig 25 Un Plug the electrode wires Slacken the fixing screws Remove the ele...

Page 54: ...uit Then restart the ap pliance remembering to discharge any air that may be trapped in the system Gas valve see fig 27 Disconnect the joints and remove the gas pipe connecting the gas valve to the ve...

Page 55: ...mounting bracket Remove the expan sion vessel from the front of the boiler Replace the expansion vessel and re assem ble the components following the above pro cedure in reverse order Switch on the el...

Page 56: ...nts and bleed off any air from the circuit Restart the boiler Diverter valve see fig 32 Replacing the diverter valve body Close the shut off valves and drain the cen tral heating circuit of the boiler...

Page 57: ...mponents following the above procedure in re verse order Switch on the electricity water and gas supplies and regulate the boiler see 6 3 Gas data modulation circuit board Fig 1 Fig 2 modulation circu...

Page 58: ...ve the support brackets and pull out the heat exchanger Remove the regulation sensor from the old heat exchanger and refit it together with the two condensate drainpipes to the new one Replace the hea...

Page 59: ...ue brown orange orange brown orange Remote control Telephone control M10 M1 orange black black M2 M6 M9 M5 M7 VG black MF black remote controller zone valve Zone valve contact closure M4 Zone valve ma...

Page 60: ...the terminal board B When the wires have been connected place plate A back to position and then the front case panel 36 Connecting the room thermostat Option Connect the wires to the terminal board i...

Page 61: ...sor wires Connecting the remote controller and the outside temperature sensor option a switch off the power supply at the main switch b remove the front case panel of the boiler c slacken the screws a...

Page 62: ...access the main p c b for electrical connection see 7 3 Accessing the boiler and to activate the parameter P15 see 6 1 Parameters table Outside temperature sensor option Terminal block REMOTE OPEN TH...

Page 63: ...valves and telephone control wirings Outside temperature sensor option Terminal block REMOTE OPEN THERM Telephone control Zone valve management option remote controller board cod 40 00018 Option remo...

Page 64: ...correction is reported in figure 39 The selection of the compensation curve is determined by the maximum delivery temperature Tm and the minimum outdoor temperature Te N B The y axis values of the del...

Page 65: ...65 7 8 Troubleshooting...

Page 66: ...hout any modulation The function is useful for combustion testing 08 Frost Protection Central heating circuit The function is activated when the heating sensor senses a temperature of 5 C The boiler o...

Page 67: ......

Page 68: ...hibey Cad No 55 Kat 13 35210 Pasaport ZM R TURKEY Phone 90 232 483 25 60 Fax 90 232 441 55 13 Ziyapa a Bulvar elik Ap No 25 5 6 01130 ADANA TURKEY Phone 90 322 457 62 23 Fax 90 322 453 05 84 Metin Kas...

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Alarko SERADENS SRD 20, Installation, Operating And Maintenance Instructions

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