Biasi Inovia 25C ERP Service Manual Download Page 8

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DIAGRAMS

3 diaGrams

3 .1 wiring diagram inovia 25c erp - inovia 30c erp - inovia 35c erp

figure 3 .1

bu
bn

Safety

OUT

GND

5 V

OUT

GND

5 V

bn = brown

bu = blue

bk = black

wh = white

rd = red

gy = grey

gn = green

ye = yellow

vt = violet

og = orange

gnye = green/yellow

rdwh = red/white

gnye

bu
bn

gnye

bu
bn

gnye

diverter valve

Three way

Pump

Gas valve

Fan

Ignition

electrodes

Flame detection

electrode

Flue temp.

probe NTC

C.h. temperature

probe NTC

thermal fuse

return

C.h. temperature

probe NTC

flow

D.h.w. outlet

probe NTC

temperature

D.h.w. inlet
probe NTC

temperature

D.h.w. flow

switch

pressure switch

Primary circuit

Safety

thermostat

Summary of Contents for Inovia 25C ERP

Page 1: ...0 Inovia 25S ERP 41 583 30 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 cu...

Page 2: ......

Page 3: ...the control panel electronic p c b 30 10 6 Removal of the interface electronic p c b 30 11 Gas valve 32 11 1 Function 32 11 2 Description of the parts Figure 11 2 32 11 3 Adjustment 32 11 4 Checks 34...

Page 4: ...electrodes Expansion vessel Condensate trap C h pressure relief valve D h w heat exchanger Automatic air purger valve Control panel Electric actuator diverter valve D h w temperature probe Airbox air...

Page 5: ...ws A Figure 2 2 lift the panel and remove it Figure 2 2 A B B Bottom view of the boiler Pull the lower part of the front panel and lift it upwards Figure 2 3 Figure 2 3 C C To remove the side panels l...

Page 6: ...box Warning isolate the boiler from the mains electrici ty supply before removing any covering or compo nent To gain access to the parts located into main electronic p c b box proceed as follows 1 Rem...

Page 7: ...the boiler 3 Open the drain tap I Figure 2 11 combi or Figure 2 12 only c h until the boiler is completely emptied 4 To help the draining of the primary circuit loose the condens ing heat exchanger a...

Page 8: ...bn gnye wh wh gy wh wh wh bu bn bu bn br bu og og gnye bu bn bu bn gnye ye bk ye wh wh bk bk rd rd bk bk bk wh wh wh wh wh t wh bk bk bk bk rd bu bu bu bu bk bk wh wh rd rd rd wh wh rd rd bu bu rd rd...

Page 9: ...ye bu bn bu bu bn gy bk bu rd rd bu bk bu bn gnye wh wh gy wh wh wh bu bn bu bn br bu og og gnye bu bn bu bn gnye ye bk ye wh wh bk bk rd rd bk bk bk wh wh bk bk bk bk rd bu bu bu bu bk bk wh wh rd rd...

Page 10: ...ltages with burner on during c h or d h w operation only during c h operation only during d h w operation 230 Safety thermostat 1 Fan 0 Main circuit Supply network 230 0 230 0 3 way diverter valve 230...

Page 11: ...ger Pump Diverter valve D h w flow switch Fuses Electronic p c b Main electronic p c b Boiler settings Control panel electr p c b Gas valve Main circuit pressure switch D h w filter Main circuit temp...

Page 12: ...h w temperature 9 Er ind Poor d h w temperature Regular operation in c h mode 8 No Low d h w flow rate Water leaks from the safety valve during operation on c h Water leaks from the safety valve when...

Page 13: ...d h w temp probe NTC E08 Faulty external temp probe NTC with K set E09 Faulty flue temp probe NTC if present E10 RESET Flue probe intervention lockout if present Flame detection error An flasching er...

Page 14: ...pipe following the instructions from 1 to 6 in section Removal of the Air box and the Fan page 42 3 Disconnect the detection electrode connector the ignition electrodes connector E and the earth wire...

Page 15: ...eaning If there are deposits of dirt on the coil of the Condensing heat exchanger clean with a bristle paintbrush and remove the dust with a hoover Warning After cleaning or replacement as detailed ab...

Page 16: ...the instructions from 4 in section 2 3 4 Remove main electronic p c b box following the instructions from 5 in section 2 4 5 Remove the pump following the instructions in section 7 2 6 Completely uns...

Page 17: ...iler off remove the front and right hand side case pan els lower the control panel and empty the primary circuit Remove the pump head by undoing the screws which hold it to the pump body and check tha...

Page 18: ...on of the actuator B brass spindle when the boiler operates in c h mode In both figures the relationship between the position of the actua tor and the resistance of the motor windings the motor must b...

Page 19: ...that the three way diverter is correctly oriented by matching the reference H with the notch of the water group Figure 8 5 8 5 Removal of the diverter group 1 Remove the front and both side case pane...

Page 20: ...nd supplies the fan regulating its speed The Main electronic control ignition p c b has a safety function and any incorrect interventions or tampering can result in condi tions of dangerous functionin...

Page 21: ...temperature and d h w out let temperature The temperature of the water is converted into an electric signal by means of temperature probes The user setting the desired temperature with the control pa...

Page 22: ...function modes hereafter named parameters by using the keys of the control panel p c b Figure 9 5 A B C 1 To enter in the parameters setting mode press contemporary the 3 keys A B C Figure 9 5 for 10...

Page 23: ...see chapter COMMISSIONING section Setting record PARAMETER LCD VALUES SET Boiler type to be up dated with the complete range P 01 00 No power Er 99 35 Inovia 25C ERP 36 Inovia 30C ERP 37 Inovia 35C ER...

Page 24: ...n power P 14 LPG Propane G31 26 Inovia 25C ERP 37 Inovia 30C ERP 31 Inovia 35C ERP 43 Inovia 25S ERP K value external probe diagram P 15 00 Off factory set 01 0 1 60 6 0 K value Min useful output c h...

Page 25: ...ed adjusted accord ingly with the values noted in table in the installation manual see chapter COMMISSIONING section Setting record for information on parameters see also section 9 4 1 Remove all the...

Page 26: ...cels lock Is fan rpm exact YES Is flue temperature higher than 110 C YES NO beginning of wait period End of wait period YES NO YES starts ignition discharges Opens gas valve beginning of ignition peri...

Page 27: ...NO YES NO NO starts fan checks fan rpm YES cancels lock Is fan rpm exact NO YES Is flue temperature higher than 110 C YES NO beginning of wait period flame presence End of wait period YES NO YES star...

Page 28: ...displayed high lighting the number with the following se quence 1 Mon 7 Sun Constantly illuminated d h w function enabled Flashing d h w function enabled Flashing solar circuit pump in operation Sola...

Page 29: ...uit temp limit during D h w op eration Boiler Stand By hyphens are turned on in sequence to simulate running antifreeze protection activated LCD FUNCTION In the case of incorrect pressure the value is...

Page 30: ...o maintenance J15 value 3 star status ON 01 OFF 00 J16 value HWCH Hardware code high J17 value HWCL Hardware code low J18 value SWCH Software code high J19 value SWCL Software code low J20 value 10 4F...

Page 31: ...nel electronic p c b Figure 10 4 N O P Q R S 4 Unscrew the screws R and Q 5 Remove the Interface electronic p c b 6 Reassemble the Interface electronic p c b carrying out the removal operations in the...

Page 32: ...oiler switching on the fused spur isolation switch 6 Set the boiler in c h d h w function as illustrated in Figure 11 3 Figure 11 3 C h d h w function 7 Open at least one hot water tap fully 8 Read th...

Page 33: ...5 Propane G31 9 2 10 2 To adjust the CO2 value remove the brass plug by unscrewing it and rotate the Allen key screw 4 mm C Figure 11 2 by rotating it clockwise the CO2 increases Checking the maximum...

Page 34: ...r from the mains electrici ty supply before removing any covering or compo nent 1 Remove the front panel of the case as explained in the sec tion 2 3 of this manual 2 Disconnect the connector L Figure...

Page 35: ...1 Measure the electrical resistance between the tabs bk and wh Figure 12 2 The contact must close resistance zero with c h pressure of 0 35 bar or higher Figure 12 2 bk wh rd 5V The contact close resi...

Page 36: ...gure 13 2 B 3 Check the pre load pressure and refer to the section Expan sion vessel in the User manual and installation instructions for the correct value 13 3Removal of the expansion vessel Warning...

Page 37: ...3 4 2 5 14 3Removal of the sensor Warning isolate the boiler from the mains electrici ty supply before removing any covering or compo nent Figure 14 3 B C D E 1 Remove the front panel of the case 2 D...

Page 38: ...the body 4 with the filter from the flow switch group rotate the flow switch plug 1 Figure 14 5 4 Reassemble the parts following the removing sequence in reverse order 14 6Flow limiter The Inovia 25C...

Page 39: ...ture resistance relationship Warning isolate the boiler from the mains electrici ty supply before removing any covering or compo nent Disconnect the cable from the Temperature probe Measure the temper...

Page 40: ...pproved by the local water Au thorities Figure 15 4 I J C Removal of the d h w Intlet Temperature probe 6 Remove the front panel of the case and lower the control panel 7 Empty the d h w circuit of th...

Page 41: ...y before removing any covering or compo nent 1 Remove all the case panels 2 Empty the primary circuit of the boiler 3 Remove the locking plate B and pull up the by pass valve A Figure 16 2 Figure 16 2...

Page 42: ...4 Disconnect the rubber pipe D 5 Unscrew the gas connector E 6 Remove the fixing fork F and remove the gas pipe G 7 Disconnect the connector H 8 Disconnect the fan connector I by pressing the plastic...

Page 43: ...etection electrode connector F 3 Unscrew the screws G and remove the ignition electrodes B and the detection electrode C 4 Assemble the Ignition and detection electrodes carrying out the removal opera...

Page 44: ...fter any periodical servicing or disturbance the combustion chamber silicon seal Figure 18 5 and the Air gas duct gasket Figure 18 6 must be fully inspected and replaced at the discre tion of the serv...

Page 45: ...e spark generator and to the control ignition p c b Warning Insulation panels material handling care Mineral fibres are used in this appliance for the insulation panels of the combustion chamber Exces...

Page 46: ...t panel The boiler should maintain a temperature below that of the safety thermostat and no overheat intervention should occur Warning isolate the boiler from the mains electrici ty supply before remo...

Page 47: ...system Reaching the breakdown temperature it opens the circuit and locks out the boiler In case of intervention of this safety device the heat exchanger part shown in Figure 20 3 may be damaged and m...

Page 48: ...e NTC and Safety thermal fuse Figure 20 4 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 7500 8000 8500 9000 9500 10000 10500 11000 11500 12000 12500 20 25 30 35 40 45 50 55 60 6...

Page 49: ...ached to the flame detection electrode this will cause the boiler lock outt 21 2Check the cleanness of the trap Unscrew the plug B on the bottom of the trap A and remove dirt eventually deposit Figure...

Page 50: ...8 Auxiliary p c b 1 BI2035 120 9 Control panel electronic p c b 1 BI2035 119 10 E01 204 D h w heat exchanger mod Inovia 25C ERP 1 BI1001 101 E01 205 D h w heat exchanger mod Inovia 30C ERP Inovia 35C...

Page 51: ...51 Short spare parts list 1 5 3 4 2 6 11 7 10 14 19 18 20 21 22 23 13 12 15 16 9 8 17 Figure 22 1...

Page 52: ...1796221972 17962 2197 2 3115 52A4 UK Biasi UK Ltd Commercial Road Leamore Enterprise Park WALSALL WS2 7NQ Sales Tel 01922 714600 Tech Service Tel 01922 714636 www biasi co uk 31 08 2015 N...

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