Table of Contents
Advertisement
Quick Links
Wall hung, fan flue, room sealed, high efficiency gas boiler
Service manual
ActivA
Models:
G.C. Appl. No.
Activ A 12OV
Activ A 15OV
Activ A 20OV
Activ A 25OV
Leave this manual adjacent to the gas meter
Warning
Service / repairs must be carried out, only by a qualified Gas
Safety Registered Engineer, who will be responsible for the cur-
rent Regulations for gas appliances.
Advertisement
Table of Contents
Related Manuals for Biasi Activ A 12OV
Summary of Contents for Biasi Activ A 12OV
- Page 1 Wall hung, fan flue, room sealed, high efficiency gas boiler Service manual ActivA Models: G.C. Appl. No. Activ A 12OV Activ A 15OV Activ A 20OV Activ A 25OV Leave this manual adjacent to the gas meter Warning Service / repairs must be carried out, only by a qualified Gas Safety Registered Engineer, who will be responsible for the cur- rent Regulations for gas appliances.
-
Page 2: Table Of Contents
Table of contents Gas valve ......Function ......Description of the parts . -
Page 3: Overall Information
Overall information Overall View Flue temperature probe NTC C.h. flow temp. probe Condensing heat Safety thermostat exchanger air purger valve Condensing Electronic heat exchanger control box Ighition electrodes Burner Detection electrode Air box (air/gas mixer) C.h. return temp. probe Gas restrictor C.h. -
Page 4: General Access And Emptying Hydraulic Circuits
General access and emptying hydraulic circuits Nomenclature Fig. 2.3 To remove the side panels loosen the screws B (Fig. 2.2) and C (Fig. 2.3). Pull the side panels towards the outside. To Fit the case panels Fig. 2.1 Fit the side case panels Right side panel Warning: Main electronic p.c.b. -
Page 5: Main Electronic P.c.b. Box
General access and emptying hydraulic circuits Free the hooks indicated and rotate the lid to- wards left (Fig. 2.5). Fig. 2.7 Slightly rotate the lid as indicated by the curved arrow and free the rear hooks. Remove the lid. Main electronic p.c.b. lid removal Fig. -
Page 6: Emptying The Primary Circuit
General access and emptying hydraulic circuits To help the draining of the primary circuit loose the condensing heat exchanger air purger valve G (Fig. 2.11) Fig. 2.9 Emptying the primary circuit Close the c.h. circuit flow and return cocks. Remove the front and right panels of the boiler. Fig. -
Page 7: Diagrams
Diagrams Wiring diagram Gas valve Condensate trap Ignition Flame detection electrodes electrode gnye gnye C.h. return temp. probe NTC Flue temp. probe NTC Fuse 2AF 250VAC 5x20 C.h. flow temp. probe NTC gnye Safety thermostat Time switch (option) Remote External temp. probe terminal block Electric supply... -
Page 8: Circuit Voltages
Diagrams Circuit voltages Electrical voltages with burner on during c.h. operation C.h. external pump Gas valve Safety Supply network thermostat... -
Page 11: Fault Finding
Display diagnostic The display indications provide help in the diagnosis of fault finding. The control panel display gives other information for the user. The following table gives fault code, error and the reson for the fault. Er 01 + RESET Lack of burner ignition Er 02 + RESET Safety thermostat lockout Er 03 + RESET Other faults Faulty primary circuit (no water or... -
Page 12: Condensing Heat Exchanger
Condensing heat exchanger Function The Condensing heat exchanger A in Fig. 5.1 has the function of transferring heat produced from combus- tion of the gas and from the flue exhausted gas to the water circulating in it. Fig. 5.1 Fig. 5.2 By reducing the combustion products temperature, the Disconnect the fan connector M by pressing the latent heat of the vapour is transferred to the water cir-... -
Page 13: Cleaning
Condensing heat exchanger Loosen the connection Q and remove the pipe R Loosen the screws X (Fig. 5.4 --- Fig. 5.2) (Fig. 5.4) from the Condensing heat exchanger. Unscrew the screws Y (Fig. 5.2). Unscrew the screws S . Remove the Condensing heat exchanger slightly Remove the fan---burner group. -
Page 14: Main Electronic Control/Ignition P.c.b
Main electronic control/ignition The fundamental function of the Main electronic con- trol/ignition p.c.b. is that of controlling the boiler in rela- p.c.b. tion to the external needs (i.e. heating the dwelling) and operating in order to keep the temperature of the hy- Function draulic circuits constant. -
Page 15: Checking The Temperature
Main electronic control/ignition p.c.b. Some of these devices are directly accessible by the During the c.h. operation (Fig. 6.3), the signal coming user (function control, temperature adjustment etc.) from the c.h. temperature probe is compared to the sig- others, like the fuses, are accessible by removing the nal given by the control panel p.c.b. - Page 16 DIGIT VALUES Boiler type (to be up- Pr 01 00 = No power Er 99 dated with the com- 18 = Activ A 12OV plete range) 19 = Activ A 15OV 20 = Activ A 20OV 21 = Activ A 25OV...
-
Page 17: Checks
Max. useful output in c.h. mode factory set: Check that the fuses are complete 99 = Activ A 12OV 99 = Activ A 15OV If the Main electronic control/ignition p.c.b. does not 99 = Activ A 20OV supply any device (pump, fan, etc.) check that the 99 = Activ A 25OV fuses 10 (Fig. - Page 18 Main electronic control/ignition p.c.b. Delicately flex the hooks D in the directions indi- Re---assemble the Main electronic control/igni- cated (Fig. 6.11) in order to release the circuit tion p.c.b. following the removal procedures in from the box. the reverse order. Remove the Main electronic control/ignition Important p.c.b..
-
Page 19: Thermal Control In The "C.h." Mode
Main electronic control/ignition p.c.b. Thermal control in the ”c.h.” mode Switch in the c.h. function mode circulator off Request for heat from fan still room thermostat? circulator on Temp. difference Is primary circuit stop circulator (3min) between probes temperature higher than that higher than 35˚... -
Page 20: Control Panel Electronic P.c.b
Control panel electronic p.c.b. FUNCTION Function Faulty c.h. temp. probe NTC Er 17 + RESET (Flow or Return) Faulty primary circuit (no water or Er 18 + RESET absence of flow) Faulty primary circuit (no water or Er 04 + absence of flow) Faulty fan control system Er 05 +... -
Page 21: Info Modality
Control panel electronic p.c.b. FUNCTION Description Parameter Value -- 5 Delayed burner ignition for setting External temperature ˚C (if fitted) the system (uu flashing + tem- perature flashing) K value (external probe dia- gram) (the value is x 10) Boiler in chimney sweep function- Offset (Transaltion of K diagram -- 10 ing mode. - Page 22 Control panel electronic p.c.b. Unscrew the screws B Delicately flex the hooks C in the directions indi- cated (Fig. 7.3) in order to release the circuit from the box. Remove the Control panel electronic p.c.b.. Reassemble the Control panel electronic p.c.b. carrying out the removal operations in the reverse order.
-
Page 23: Gas Valve
Gas valve Maximum gas pressure adjustment Minimum gas pressure adjustment Function On---off operators The Gas valve A in Fig. 8.1 controls the gas inflow to the On---off operators electric connector boiler burner. Gas valve inlet pressure test point Adjustment Warning: isolate the boiler from the mains electricity supply before... - Page 24 It should be between: pre---heat the flue, before commencing any ad- justments Model Type gas % value (range) Activ A 12OV Natural (G20) 8,2 --- 9,0 A ti A 15OV Activ A 15OV Propane (G31) 9,2 --- 10,2 Activ A 20OV...
-
Page 25: Checks
Disconnect the connector D (Fig. 8.12). Model Type gas % value Unscrew the screws E and disconnect the earth (range) connector F. Activ A 12OV Natural (G20) 8,9--- 9,8 Activ A 15OV Activ A 20OV Propane (G31) 9,9 --- 10,8 Activ A 25OV Tab. - Page 26 Gas valve Adjust the gas valve using the flue analyser as de- scribed in section 8.3. After any service operation on the components of the gas circuit check all the connections for gas leaks. Warning: After cleaning or replacement as detailed above, it is deemed necessary to undertake a combustion analysis as detailed in chapter 8.3 section 11.
-
Page 27: Temperature Probe
Temperature probe Checks Function Temperature---resistance relationship The Temperature probe has the function of converting the temperature of the water in the hydraulic circuit Warning: isolate the boiler from the mains where it is installed into an electrical signal (resistance). electricity supply before removing any The relation between temperature and electrical resis- covering or component. - Page 28 Temperature probe Fig. 9.4...
-
Page 29: Fan And Air Box
Fan and Air box Disconnect the rubber pipe C (Fig. 10.2). Unscrew the gas connectors D and remove the 10.1 Function gas pipe E. Disconnect the connector F The function of the Fan A (Fig. 10.1) is to force the mix- ture of air and gas into the burner. -
Page 30: Ignition And Detection Electrodes And Burner
Ignition and detection electrodes Disconnect the ignition electrodes connector E and the earth wire F (Fig. 11.1) and disconnect and burner the detection electrode connector G. Unscrew the screws H and remove the ignition 11.1 Function electrodes B and the detection electrode C Three electrodes are fitted on the fan---burner group. - Page 31 Ignition and detection electrodes Check the connection wires. earth electrode 3,5 mm Ignition electrode Fig. 11.4...
-
Page 32: Safety Thermostat
Safety thermostat Warning: isolate the boiler from the mains electricity supply before removing any 12.1 Function covering or component. Electrical function The safety thermostat A in Fig. 12.1 is a device that senses the temperature of the primary circuit water Remove all the case panels. -
Page 33: Checks
Flue temperature probe NTC and 13.2 Removal Safety thermal fuse Warning: isolate the boiler from the mains electricity supply before removing any 13.1 Function covering or component. The Flue temperature probe NTC A in Fig. 13.1 and Fig. 13.2 senses the temperature of the combustion Remove all the case panels. -
Page 34: Condensate Trap
Condensate trap Unscrew the plug D on the bottom of the trap A and re- move dirt eventually deposit (Fig. 14.3). 14.1 Function 14.3 Removal The condensate trap A in Fig. 14.1 and Fig. 14.3 allows Warning: isolate the boiler from the mains the discharge of the condensate via the condensate electricity supply before removing any drain pipe avoiding in the mean time the escape of... -
Page 35: Short Spare Parts List
Activ A 20OV) Burner (mod. Activ A 25OV) BI1313 101 Condensing heat exchanger BI1462 101 (mod. Activ A 12OV, Activ A 15OV, Activ A 20OV) Condensing heat exchanger (mod. Activ A 25OV) BI1462 102 BI1313 102 Gas valve BI1313 103 SIT 848 Sigma 0848135 Main Electronic control/ignition p.c.b. - Page 36 *1796220170* 17962.2017.0 1710 36A4 UK Biasi UK Ltd Commercial Road Leamore Enterprise Park WALSALL WS2 7NQ Tel : 01922 714600 www.biasi.co.uk...
Need help?
Do you have a question about the Activ A 12OV and is the answer not in the manual?
Questions and answers