Instruction/ maintenance manual of the product C28 Mamiya
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installation and servicing mini HE When re placing any part of this appli ance , use on ly spare parts that you c an be ass ur ed confo rm to safety and perfo rmance spe cifi cation that w e requ ire.
2 mini HE - - - Insta llat ion & Servicing.
mini HE - - - Insta llat ion & Servicing 3 DOCUMENT AMENDME NTS Relevant Installa ti on changes implemented in this book from bo ok reference......
GENERAL 4 mini HE - - - Insta llat ion & Servicing T a b l e 1 --- B o i l e r D a t a mini HE C24 mini HE C28 min i HE C 32 Gas s upply type & connec ti on II 2H3P G20 20mbar , G31 37mb ar , .
GENERAL mini HE - - - Insta llat ion & Servicing 5 mini HE Boiler size G.C . app liance No. PI No. (Ben ch mar k No .) mini HE C24 47 - - - 348 - - - 38 87BQ81 mini HE C28 47 - - - 348 - - - 39 87.
GENERAL mini HE - - - Insta llat ion & Servicing 6 1 BOILER WA TE R CONNECT ION 400 803 700 35 257 16 31 50 65 (2 9/16”) 83 (3 1/4”) 65 (2 9/16”) 52 (2”) 64 (2 1/2”) CH return CH fl ow DHW cold in let Gas inlet DHW h ot outlet Wall mounting Plate Condensate drain connecti on area Pipe si ze O.
GENERAL mini HE - - - Insta llat ion & Servicing 7 INTRO DUC TION mini HE C 2 4 , min i HE C 28 and mi ni HE C 32 are wall mounted, l ow water cont ent, balanced flue, condensing combination gas boilers. Central hea ting (CH ) outpu t and d omestic hot w ater (DH W) outpu t are both fully m odu lating: - - - between 10.
GENERAL mini HE - - - Insta llat ion & Servicing 8 The E lectricity at Work Reg ulations, 1989. The manufacturers not es must NO T be taken, in any way , as overriding st atutory obl igations. IMPORTANT These appliances are CE certif icated for safety and performance.
GENERAL mini HE - - - Insta llat ion & Servicing 9 5 From vertical d rain pip es or soil pipes* 25 mm ( 1 ”) *** 6 From an internal or external c orner or to a boundary along side t he terminal 25 mm ( 1 ”) *** 7 A bov e adj a cent g round , roof or balcony level 300 mm (12”) 8 From a surface or a bound ary facing the terminal.
GENERAL mini HE - - - Insta llat ion & Servicing 10 Dome stic Hot Water In hard water areas where mains w ater can exceed 200p pm T o tal H ardness (as d efin ed by BS 7593: 2006 T able 2) a scale reduci ng device shoul d be fitted into t he boile r cold suppl y within the requirements o f the local water c ompany .
GENERAL mini HE - - - Insta llat ion & Servicing 11 T a bl e 5 mini HE C 2 4, mi ni HE C 28 System charge pressu re (bar) 0.5 0.7 1.0 Saf ety v alve settin g 3.0 V essel pre - - - cha rge pressu re (bar) 0.7 System volume (litres) V olume of ex pansion v essel in addi tion to 6 litre uni t fitted to b oiler 75 --- --- --- 100 0.
GENERAL mini HE - - - Insta llat ion & Servicing 12 5 BOIL ER C ONTR OL INT ER L OCKS Thermostatic rad iator v alv es. Caradon I deal Ltd. suppo rt the rec ommendations made by leading manufacture.
GENERAL mini HE - - - Insta llat ion & Servicing 13 7B O I L E R W A T E R C I R C U I T D I A G R A M 32 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 23 24 25 22 26 27 28 29 30 31 33 1 2 3 4 34 .
INST ALLA T ION 14 mini HE - - - Insta llat ion & Servicing 8 B O I L E R A S S E M B L Y --- Exploded V iew 16 37 1 11 26 7 10 17 8 39 22 20 4 23 14 13 31 27 25 12 28 29 30 15 32 33 35 34 9 6 36 .
INST ALLA T ION mini HE - - - Insta llat ion & Servicing 15 9 UNP ACKING The boiler is su pplied f ully a ssembled in one pack A , together with a st andard flue assembly for l engths up to 960 mm (37” 3/4), rear or side f lue outlet, in pa ck B.
INST ALLA T ION mini HE - - - Insta llat ion & Servicing 16 11 FIT TING THE FL UE SYSTEM The minimum and maximum equiv alent leng th for c o --- a x i a l p i p e s ø 6 0 --- 1 0 0 a n d ø 8 0 --- 1 2 5 m m a r e g i v e n i n T able 7 fo r min i HE C24 and m ini HE C28 and in T able 8 for mini H E C32 .
INST ALLA T ION mini HE - - - Insta llat ion & Servicing 17 For the correct use of the restrictors with twin pipes refer to the f ollowing diagr am f or the m odels mi ni HE C 24 ,a n d min i HE C2 8 .
INST ALLA T ION mini HE - - - Insta llat ion & Servicing 18 13 WA LL MO UNTING TEMP LA TE (rea r flu e) IMPORTANT Deta iled insta llation step s are g iven d irectly on the wa ll mounting template 1 T ape the temp late into the selected p osition.
INST ALLA T ION mini HE - - - Insta llat ion & Servicing 19 16 CUT T ING THE F LUE Note s. A I f usi ng t he extension d ucts g o to F ram e 17. B If stan d - - - o ff frame is u se d it is ess en tial this is tak en in to con side ratio n whe n mark ing the flu e (s ee Fr ame 11 ).
INST ALLA T ION mini HE - - - Insta llat ion & Servicing 20 18 FIT TING TH E OPT IONAL ROOF F LUE KIT (Fl at or Pitche d) Note . A flat o r pitche d ro of flas hing p late ( no t su pplie d) is re qu ire d be for e pro cee din g with the ins tallatio n of this kit.
INST ALLA T ION mini HE - - - Insta llat ion & Servicing 21 20 FLUE T ER M INAL POSITION The terminal shoul d be positioned so that product s of comb ustion can sa fely disperse at all tim es. Pluming may occur at the terminat ion so, where possible, terminal p ositions where this could cause a nuisa nce shoul d b e av oid ed .
INST ALLA T ION mini HE - - - Insta llat ion & Servicing 22 22 AS SEM BLIN G THE R OOF FLUE KIT Determine the co rrect height that the flue shoul d terminate above the roo f.
INST ALLA T ION mini HE - - - Insta llat ion & Servicing 23 23 FIT T ING THE WALL MOUN TING P LA TE Ref er to fra me 25 f or service con nections. Fit the wall mounting plate Direc tly to the wall F Offer up wal l mou ntin g plat e. F Screw throug h the f ix ing holes usin g 3 of f no.
INST ALLA T ION mini HE - - - Insta llat ion & Servicing 24 26 CONNECTING T HE FLUE TO THE BOILER Note. B e f o r ef i t t i n g t h ef l u et u r r e t f i l l t h ec o n d e n s a t et r a p o r siphon trap within the boiler by pouring a c upfu l of wa ter i nt o th e fl ue out let .
INST ALLA T ION mini HE - - - Insta llat ion & Servicing 25 29 E LECT RICAL CONNECTIONS Warning. This ap pliance MUST be efficiently eart hed A m ains sup ply of 230 V ~ 50 Hz is required. Mains wiring should be 3 core PVC insul ated flexible cord NOT LESS tha n 0.
INST ALLA T ION mini HE - - - Insta llat ion & Servicing 26 31 PICTORIA L WIRING mini HE C24, mini HE C28, mi ni HE C32 LD1 LD2 LD3 F1 F2 K1 K3 K4 LD4 P4 X6 X1 X7 P5 SB1 X5 K2 X3 X2 X4 1 2 3 LN M .
INST ALLA T ION mini HE - - - Insta llat ion & Servicing 27 32 FUNCTIO NAL FL OW DIA GRAM mini HE C24 , mi ni HE C28 , mi ni HE C3 2 L N Electro nic control pcb Fan Ai r pre ssure swi tc h CH flow swi tch DHW flow swi tch Pum p DHW tem p. rd bk bk bu CH temp.
INST ALLA T ION mini HE - - - Insta llat ion & Servicing 28 33 EXTERN AL ELECTRI CA L CO NTROL S Wirin g extern al to the boiler M UST be in accordance wi th the current I .E . E . (B S.7671) W irin g Re gulations. For Irel and reference sho uld be made to the cur rent ETCI rules for electrica l installation s.
INST ALLA T ION mini HE - - - Insta llat ion & Servicing 29 34 INITIAL L IGHT ING AB C D E F Central H eati ng flow Domestic hot water outl et Gas inlet Domestic cold water inlet Central Heating r.
INST ALLA T ION mini HE - - - Insta llat ion & Servicing 30 35 TO ADJ UST PR ES SU RE S Nom enclatu re of the p arts on the g as va lve H Modula tion operator’s electric connectors I M inimu m g.
INST ALLA T ION mini HE - - - Insta llat ion & Servicing 31 C A DE B 12 Press and hold the reset button D for about 10 s econds until the lo ck - - - out signal lamp E blinks.
INST ALLA T ION mini HE - - - Insta llat ion & Servicing 32 38 GEN ERAL CHE CKS Make the following checks for correc t operation: 1H o t w a t e r .
INST ALLA T ION mini HE - - - Insta llat ion & Servicing 33 39 GAS CON VER SION 1 Check th at the ga s cock fi tted und er the boiler i s turned off and the appliance is switc hed off at the mains isolating spur . 2 R emov e the f ron t pan el of the ca se.
SER VICING 34 mini HE - - - Insta llat ion & Servicing 41 SER VICING SCHEDU LE T o ensure th e continued safe and ef fi cient operation of the appliance it is recommended that it is checked at regular intervals a nd serviced as necessary .
SER VICING mini HE - - - Insta llat ion & Servicing 35 42 RE MOVA L OF OUTER AND INNER CASING 1 T urn off the gas sup ply a t the ga s service cock a nd disconn ect the electri city su pply . 2 R emove the screws A and lift off the boiler front panel.
SER VICING 36 mini HE - - - Insta llat ion & Servicing 43 BUR NER R EMOVAL AND CLEANING 1 Disconn ect the ele ctrical sup ply . 2 R emove outer and inner casing (refer to frame 42). 3 Undo the screws A and remove the fan holder brac ket B and the combustio n chamber panel C.
SER VICING mini HE - - - Insta llat ion & Servicing 37 47 FA N AND VENT URI R EMOVAL AND CLEANING 1 Disconn ect the ele ctrical sup ply . 2 R emove outer and inner casing. 3 Disconnect the co nnectors A and the earth co nnection B. 4 Disconnect the pipe which connec ts the venturi device to the air pressu re switch.
SER VICING mini HE - - - Insta llat ion & Servicing 38 REPLACEMENT OF COMPONENTS 48 GE NER AL When replacing any component: 1 Isola te the electricity su pply at the switched sp ur . N.B . T urning the boiler “ON/O FF ” switch does not isolate the live s upply to the boi ler .
SER VICING mini HE - - - Insta llat ion & Servicing 39 52 OV ERHEA T THERMO ST A T REPL ACEMEN T 1 R emove outer and inner casing (refer to frame 42). 2 R emove the screws A and the plate B. A B 3 Disconnect the wiring C . 4 R emove the spring D which holds the overheat t hermostat on the pipe of the primary heat exchanger and remove it.
SER VICING mini HE - - - Insta llat ion & Servicing 40 55 GAS VAL VE R EPL ACEM ENT Che ck 1 Disconn ect the ele ctrical sup ply . 2 R em ove th e fron t casin g pa nel. 3 Disconnect the connec tor A and check the electric al resistance of th e coil referring to the f ollowing di agram O n --- o f f o p e r a t o r approx.
SER VICING mini HE - - - Insta llat ion & Servicing 41 58 F AN RE PLACEM ENT 1 Disconn ect the ele ctrical sup ply . 2 R emove outer and inner casing. 3 Disconnect the co nnectors A and the earth co nnection B. 4 Disconnect the pipe which connec ts the venturi device to the air pressu re switch.
SER VICING mini HE - - - Insta llat ion & Servicing 42 61 PUM P RE PLACE ME NT COM PLE TE 1 Disconn ect the ele ctrical sup ply . 2 R emove the front and right hand side casing panels (r efer to fram e 42). 3 Relea se system p ressure by opening the m ain circuit drai nag e cock.
SER VICING mini HE - - - Insta llat ion & Servicing 43 62 ELECTRO NI C CON TROL/ IGNI TIO N PCB RE PLACEM ENT 1 Disconn ect the ele ctrical sup ply . 2 Gain a ccess to the controls area b y rem ovin g the boiler fron t pan el and pulling the control p anel (re fer to f ram e 30).
SER VICING mini HE - - - Insta llat ion & Servicing 44 If required, to check the PCB is set correctly f or this boiler type the foll owing procedur e should be fol lowed. Boi ler m ode setti ng 17 R emove the front panel o f the case. 18 Position the con trol knob C a s in the f igu re below and disco nnect the C .
SER VICING mini HE - - - Insta llat ion & Servicing 45 63 CH FL OW SW ITCH R EPLACE ME NT 1 Disconn ect the ele ctrical sup ply . 2 R em ove th e fron t casin g pa nel. 3R e m o v e t h e f o r k A . 4 O pen the box B and disconnect the switc h. B A 5 Re - - - assem ble in rev erse order .
SER VICING mini HE - - - Insta llat ion & Servicing 46 6 5 D H WF L O WS W I T C HR E P L A C E M E N T 1 Disconn ect the ele ctrical sup ply . 2 R emov e the f ron t pan el of the ca se (re fer to f ram e 42). 3 Disconnect the c onnector A and remove the switch B by delicately levering it up wards w ith a screwd river .
SER VICING mini HE - - - Insta llat ion & Servicing 47 67 PRI MARY H EA T EXC HAN GER REPL ACEMEN T 1 Disconn ect the ele ctrical sup ply . 2 Rem ove outer and inner casing as explained in f rame 42. 3 Close off the isolati ng cocks of the CH circu it at the bott om of the boil er .
SER VICING mini HE - - - Insta llat ion & Servicing 48 69 DIVER TE R VAL VE ACT UA T OR REPL ACEMEN T 1 Disconn ect the ele ctrical sup ply . 2 R emove front casing panel (refer t o frame 42).. 3 Disconnect the connec tors A. 4 R emove the fixing spring B and remove the actuato r C.
SER VICING mini HE - - - Insta llat ion & Servicing 49 71 DH W HEA T EX CH ANGER REPL ACEMEN T 1 Disconn ect the ele ctrical sup ply . 2 Rem ove outer casing (refer to frame 42). 3 Close the iso lating coc ks of the CH circuit and DHW supply at the bo tto m of the boiler .
SER VICING mini HE - - - Insta llat ion & Servicing 50 73 CO NDEN SA TE TRAP REPL ACEMEN T 1 Disconn ect the ele ctrical sup ply 2 R emove front and right hand casing panels (refer to fram e 42).
F AUL T F INDING mini HE - - - Insta llat ion & Servicing 51 75 ELECTRO NI C CON TROL/ IGNI TIO N P .C.B. OPTICAL INF ORM A TION The electronic control/ignition p.c.b. is provided with three lamps (L .E .D. indicators) A, that give optical information duri ng th e norm al opera tion of the boiler or f or serv ice an d fault fiinding purpose.
F AUL T F INDING 52 mini HE - - - Insta llat ion & Servicing 77 F AUL T F INDING WARNING Care mu st be tak en wh en condu cting f ault f indin g tests to guard against the ris k of electric s hock. 230 V ac is the nominal UK supply v olt age. This may vary between 253 Vac and 196 Vac.
F AUL T F INDING mini HE - - - Insta llat ion & Servicing 53 Cont inued from pag e 52 of fault findi ng Remov e the motor asse mbl y, with 230V at the co nnect ions i s the s pi ndle fully retr acted? Re fe r to frame 76. Dis mant le the DHW detect or valv e and clean.
F AUL T F INDING 54 mini HE - - - Insta llat ion & Servicing Cont inued from page 52 o f fault findi ng. Is there at least on e of the LEDs fla shing? Is LED 1 flashi ng wi th LED 2 on ? When th e pum p runs doe s the spin dle o f th e wa te r flow detector exten d to ope rate th e micr o switc h? Refer to frame 63.
F AUL T F INDING mini HE - - - Insta llat ion & Servicing 55 Co ntinue d fro m pag e 54 of faul t findi ng Co ntinue d o n pag e 56 of fault find ing Ensure t he igni ti on elect rode p osi ti on and sp ark ga ps are c orrect . Recti fy or replace.
F AUL T F INDING 56 mini HE - - - Insta llat ion & Servicing Co ntinue d fro m pag e 55 of faul t findi ng Re fe r bac k to pag e 52 of fault find ing to co ntinue . Is th e po sitio n o f t h e detection e lectr ode corr ect, a nd e lectr ode undamaged? Refer to frame 49.
F AUL T F INDING mini HE - - - Insta llat ion & Servicing 57 yes yes no Is LED 1 a nd L ED 2 on and L ED 3 flas hing ? Is LE D 1 o n a n d LED 2 flashi ng ? no Co ntinue d from page 55 of f aul t .
F AUL T F INDING 58 mini HE - - - Insta llat ion & Servicing Cont inued from page 5 3 Adjust th e max setting on the gas valve. Refer to frame 35. Ch eck that max b urner pres sure* can be a chiev ed. Is the co ld wa ter suppl y adequate? refer to frame 6 an d T abl e 1 at pa ge 4.
mini HE - - - Insta llat ion & Servicing 59 The following are part s commonly required as replacements , due to damage or expendabil ity . The failure o r absence is likely to af fect th e safety and/or perf orman ce of this appliance . The list is ex tracted f rom the British Ga s List of Parts which contains all available spar e parts.
60 mini HE - - - Insta llat ion & Servicing 31 H 0 7 --- 8 5 8 Control p ane l door 1 173988 32 H 0 7 --- 8 8 2 Front c ase panel 1 173989 1 4 6 2 5 78 16 12 9 13 28 29 22 24 17 14 10 23 11 19 31 .
mini HE - - - Insta llat ion & Servicing 61 INST ALLER NOTIF IC A TION GUIDELIN ES IT IS A REQUIREMENT OF CORGI M EMBERSHIP TO REG IS TER EVER Y GA S AP PLIA NCE In addition a change t o Building Regulatio ns (England and W ales) req uires the in staller to notif y when installin g a heating ap pliance, as from 1st Ap ril 2005.
T o comp ly with the Buil ding Reg ulati on s, each section must have a tick i n on e or other o f the boxes CONTRO LS BOILER SERIAL No. NOTIFICA TI ON No.
SERVICE INTER V AL RECORD It is recommended t hat your heating syst em is serviced regularly and that you com plete t he appropriate Service Interval R ecord Below .
Idea l In sta ller/ T ech ni ca l He lpli ne : 01482 498 663 www.ide alb oiler s.com T ech ni cal T rai ni ng The I deal Boilers T echnical T raining Cen tre offers a series of first class t raining courses for do mestic, commercial and industrial heating inst allers engineers and system specifiers.
P o i n t sf o rB o i l e rU s e r Note. In lin e with ou r curre nt warran ty policy we w ou ld ask that you che ck thro ugh the follo win g guide to ide nt ify any pro blems ex te rn al to the boile r prio r to requ e stin g a ser vice e ngin ee rs v isit.
CO NTROL O F CH TEMPERA TURE The output t emperature o f CH water is adjustable fro m a mini mum of abou t 38 ° C t o a maximum of abo ut 85 ° Cb y turning the knob C.
mini HE mini HE C24 G.C . appliance No . 47 - - - 348 - - - 38 mini HE C28 G.C . appliance No . 47 - - - 348 - - - 39 mini HE C32 G.C . appliance No . 47 - - - 348 - - - 41 Destination countries: GB, .
mini HE When r eplacing any part o f this appl iance, use o nly spare part s that you can be as sured conf orm to sa fet y and p erf orman ce sp eci fi ca ti on that we req uire.
An important point after buying a device Mamiya C28 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Mamiya C28 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Mamiya C28 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Mamiya C28 you will learn all the available features of the product, as well as information on its operation. The information that you get Mamiya C28 will certainly help you make a decision on the purchase.
If you already are a holder of Mamiya C28, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Mamiya C28.
However, one of the most important roles played by the user manual is to help in solving problems with Mamiya C28. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Mamiya C28 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
