User manual VAILLANT VCW 25 1 T3W

[. . . ] for Instructions Installation Servicing and Vaillant Combined appliances for heating and domestichot water VCW2Ol1 W T3 GC-No. O44 01 Centralheating Domestichot water This aoolianceshall be installedin accordancewith the relevant Codes of Practiceby BritishGas or by an authorizedinstaller C O R G Im e m b e r ) These instructions should be left near the gas meter when the installation is completed. Contents P4e 1 . lnstallation of boiler Water circulation system and testing Commissioning 7. Servicingof combi heater q Foultfinding 1 0 . [. . . ] Slackenthe 2 screws holdingthe flue hood and slide hood up as far as possible. Remove sensor (3) of overheat cut-off device from pocket on left hand side of heat exchanger. Undo union nuts (G) on heat exchangerunionsand slackenlockingnuts (H) above them. Clean heating body especially fins carefully with hot waier, detergents and brush. lf necessary descale with propriety descaling aqent. lf necessary, carefullywith screwdriver. st-raighten 8. 3. 2 Open flued aPPliance Remove burner assembly as under 82. 1 . 2. Slacken the 2 screws holding the draught diverterand slide draughtdiverterup as far as possible. Remove sensor (3) of the overheat but-offdevicefrom the pocketon left hand side of the heat exchanger. Undo union nuts (G) on the heat exchangerunionsand slackinglocking nuts (H) abovethem. Removeheat exchanger' fins carefully clean heatingbody and especially with hot water, detergent and brush. lf necessary, descale with proprietarydescaling aoent. Do not bend the fins, if necessary carefully with screwdriver. st"raighten L 30 -:_Tovethe venturi in -a-c connection tubesituated the riqht_ of the heating O"Ov. b'nZci :, :. e ando-ring, boreand-repla6" - -gcessary. clean ;_*;; =;lp9emble . . in reverse oroer, ensurino A:shers - J rlue . arefittedin heat "". n", ig"i'r;;;X : ductengaged spigot flr; 6rrn*;;;i in in 8. 4Descaling domesticheatexchanger of removethe . 1"_. -:y'q"nd tl saus" t-n"', i:", ru i:Ji:?"T; -nscrewing 2 tubing the nuts. 6et-tei;;;";i For 111:l]r_etcessarytodescatethedomestic-heat excnanger arerwardswith clean water. 3ea:semble in reverse oroer using new /yashers. the nuts(K) -o_ lng_ 3 u. nion . 1?I--qy9 rarn screwsl). Descale "io-ir, "'"2 ( b, jr". ti" rlt"?descating agents rinl-e :11e_: ptoryetary anO ?y :o the connections. reriove the b;;;;e;;fi;; tne ;;;ily =i:"^ p^y . unscrewing S retatning : ":tess to unscrew i:^, , !:tl retaining theconnections :ne tower frame. 8. 5 Cleaning of water section I?_-l"Toy. q. the water section unscrew the 'nrernat. . (N) and the external- (M)";"i;; connections and loosenthe screw (L). Open the water section. Clean the water filter (O) or replace, if necessary'Check diaphragm tpj anO water governor (61), replace, if necessary. [. . . ] lf the micro switch does not operate despite the fact that the switch pin moves, the switch lever must be readiusted. For this, unscrewthe support ofthe micro switch and push itdownward until the switch lever contacts thetop oiwater section. Fix the suOport in this Dosition. 56 - lsvoltage \ 240 V AC from Does Main Burnet NO 4 Rpeatthe tollowing checlG: A. Resistanceto Earth accordingto Instructions tor BritishGas Mullimeter. lsWater Slection tested? Swkh off electricRy, tmove Control Box Cover. [. . . ]