Benutzeranleitung / Produktwartung GWH 2700 ES LP des Produzenten Bosch
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M OD E L G W H 2 7 0 0 E S N G an d G WH 2 7 0 0 E S LP - I N D OO R M O D E L T emper atu re Modu lat ed wit h E lec t ronic Ignit ion Suit able for heat i ng pot able w at er only Not app roved fo r.
6 720 608 542 2 Index Index 1 Warning 3 2 Appliance de tails 4 2.1 Features 4 2.2 Specification s (Technical data) 5 2.3 Unpacking th e heater 6 2.4 General rules to follow for safe operation 7 2.5 Dimensions and Minimum installation cl earances 8 3 Installation in structions 9 3.
6 720 608 542 Warning 3 1 Warning For your safe ty Do not store or use gas oline or other flammable, combustible or corrosive v apors and liquids in t he vicinity of th is or any other applia nce. Warning: Carefully pla n w here you install the heater.
6 720 608 542 4 Appliance de tails FCC: This device c omplies w ith Part 15 of th e FCC rules. Operation is subject t o the following two conditions: (1) This device may not cause harmful interference, and (2 ) this device must accept a ny interfere nce received, including interference that ma y ca use u ndesired operation.
6 720 608 542 Appliance detai ls 5 2.2 Specifications (Technical data) Approved in US/Canada Capacity Maximum flow r ate: 7.1 5 G PM (27 l/min) at a 45°F (25°C) rise. Maximum out put 160,500 B tu/h (47.0 kW) Maximum in put 199,000 B tu/h (58.3 kW) Efficiency in % Thermal eff iciency > 82% Min.
6 720 608 542 6 Appliance de tails 2.3 Unpacking the heater Before inst alling the uni t, be certai n you have the correct heate r for your type of Gas: Propane or Natural Gas. Identification labels are found on the shipping box, and on the rating p late w hich is located on the right side panel of the cover.
6 720 608 542 Appliance detai ls 7 2.4 General rules to follow for safe operation B 1. You m ust follo w these instructions when you inst all your heater. In th e United States: T he installation must conform with local co des or, in the ab sence of local codes, the Na tional Fuel Gas Code A NSI Z2 23.
6 720 608 542 8 Appliance de tails 2.5 Dimensions and Minimum installation clearances Fig. 6 Dimensions 1 On/Off b utton 2 Reset button 3 Program key 4 Power O N or stan d-by LED 5 LCD d isplay 6 Up bu tton 7 Down button Fig. 7 Minimum clea rances Note: For serv icing access, a 2ft cl earance to front cover is recomme nded.
6 720 608 542 Installation instructions 9 3 Inst allation ins truction s 3.1 Tools required for installation • Philips head sc rewdriver • Flat head screwd river • Adjustable wren ch • Level .
6 720 608 542 10 Installation ins tructions Horizontal ve nting systems onl y: An optional stainless c once ntric v ent/air intake termina- tion can be us ed to provide only one penetration poi nt through the exterior wall (see Fig. 8, 9 & 10). The con- centric vent/a ir intake kit can be ordered fro m your local wholesaler.
6 720 608 542 Installation instructions 11 Condensate drain requireme nts An exter nal condensate drain (not supplied wi th the heater) must be i nstalled unde r the following conditions: • All vertical termi nating vent installati ons.
6 720 608 542 12 Installation ins tructions Required dire ct vent terminal cl earances (twin p ipe / concentric pen etration) Fig. 11 * For clearances not specified in ANSI Z223. 1 / NFPA 54 or CSA -B149.1, one of the follo wing shall be indicated: a) A minimum cl earance value determine d by testing in accordanc e with section 2.
6 720 608 542 Installation instructions 13 Required ot her than direct v ent terminal clea rances (single pipe penetration) Fig. 12 * For clearanc es not specified in ANSI Z223.1 / NFPA 54 or CSA -B149.1, one of the follo wing shall be indicated: a) A minimum clearance value determin ed by testing in accor dance with section 2.
6 720 608 542 14 Installation ins tructions 3.3.3 Venting c onfiguration exampl es Below are appro ved e xamples of horizontal venting insta llations. Fig.
6 720 608 542 Installation instructions 15 Fig. 17 Vert ical ven ting inst allation (twin pipe pen etra- tion) Fig. 18 Vert ical venting installa tion - Masonry Chi m- ney (combust ion air piping not shown) 3.
6 720 608 542 16 Installation ins tructions 3.3.5 Condensat e drain installation Note: Do not install co ndensate drain i n areas where it may freeze. 1. Install condensate drain as close to he ater as possi- ble. 2. Use 3/8" ID high te mperature silicone tube to con- nect to conden sate drain port.
6 720 608 542 Installation instructions 17 3.3.6 Fan speed adjustment IMPORTANT! Installation adjus tment: After installin g the water heater, the fan speed v alues for minimum power (P2 ) and maximu m po wer (P1) may need adj ustment due to v ariations in a ltitude and ve nt pipe length.
6 720 608 542 18 Installation ins tructions Adjusting min imum power fan speed (P2) To select fan sp eed: B Press ON/ OFF button into O FF. B Press and h old "Prog ram" bu tton and press ON/OFF but ton to turn applia nce ON.
6 720 608 542 Installation instructions 19 Attention re sidents of the Com monwealth of Massachuse tts: In th e Commonweal th of Ma ssachusetts t he following regulation we nt into effect on 12/ 30/20.
6 720 608 542 20 Installation ins tructions 3.4 Combustion air requirements Twin pipe a nd Concentric pipe The water heater is designed as a se aled combustion appliance. It is recomme nded that the combustion air be provided f rom the outside by a dedicated pipe (twin pipe) or by connect ing to the c oncentric vent k it (see Fig.
6 720 608 542 Installation instructions 21 3.5 Proper location for installing your heater Carefully selec t the location of the water he ater. For your safety and for proper heater opera tion, you must provide co mbustion ai r to the heater and a proper exhaust vent system.
6 720 608 542 22 Installation ins tructions Fig. 25 Le veling the mounting b racket on the studs Fig. 26 Mo unting the heater 3.8 Gas pip ing & c onnecti ons Before connecting the gas supply, ch eck t he rating plate on the right side of the heate r to be sure that the heater is rated for th e sa me gas to which it will be connected.
6 720 608 542 Installation instructions 23 Once connections a re ma de, check for gas leaks at all joints. Apply some gas leak detection solution to all gas fittings. Bubbles are a sign of a leak. A combustible gas detector may also be used to dete ct for leaks.
6 720 608 542 24 Installation ins tructions FOR NA TU R AL GAS Maximum Capac ity of pipe in Cubic Feet of Gas per Hour for Gas Pressure of 0 .5 Psig or less and a Pressure drop of 0.3” in Wat er Column (0.75mba r).(Based on a 0.60 Specific Gravity Gas ) Btu numbers giv en in thousands.
6 720 608 542 Installation instructions 25 3.9 Water connections B When facing th e hea ter, the ¾” cold co nnection is on the bottom right and the hot c onnection is on the bot- tom left. Centrally l ocating the water heat er is recom- mended to keep hot water distributio n times even throughout the st ructure.
6 720 608 542 26 Installation ins tructions Connecting the pressure relie f valve (PRV) A listed pressure relief v alve suppli ed with t he heater must be installed at the time of installation. No valve is to be placed between the PRV and the heater. No reducing coupling or other r estriction may be inst alled in the discharge line.
6 720 608 542 Installation instructions 27 3.12 Measuring gas pressure Confirm gas p ressure upon inst allation. Connectin g manometer B Shut off gas supply at installer supplied shutoff valve for this water hea ter. B Remove front cover and loc ate inlet gas pressure measuring point (s ee Fig.
6 720 608 542 28 Electrical conn ections 4 Electri cal conne ctions 4.1 Electrical power supply The w ater heater requires an ele ctrical power supply from a 120VAC / 60Hz properly rated receptacle and must be properl y grounded. The heater is wired as shown in the wiring diagra m (chapter 9, Fig.
6 720 608 542 Operation inst ructions 29 5 Opera tion ins tructions Fig. 38 1 On/O ff button 2 Reset button 3 Prog ram Key 4 LCD d isplay 5 Up bu tton 6 Down button 7 LED - Power On indicator o r Stand-b y 5.1 LCD Display functions Fig. 39 Pow er bar indicator Fig.
6 720 608 542 30 Operation inst ructions 5.2 For your safety read before operating your water heater A. This appliance i s equipped with electroni c ignition for lighting the ma in b urner. When turni ng the heater o n, follow these inst ructions exactly.
6 720 608 542 Operation inst ructions 31 5.5 Use of optional remote control accessory (part no. TSTAT2) Fig. 47 Remot e control The wireless remote control acc essory (Fig. 71, component 13) a nd the temperature selecto r buttons on the fr ont of the w ater he ater operate identically.
6 720 608 542 32 Maintenance and service 6 Main tenance a nd service The unit should be checked once a y ear by a gas technician. If repairs are neede d, the repairs sho uld be done by a gas technician. 6.1 Annual maintenance (To remove front cover, see page 6.
6 720 608 542 Maintenance a nd service 33 space whic h is likely t o e xperience fre ezing temperatures, all water m ust be dr ained from the heater. If precauti ons are not taken, re sulting damage w ill not be covere d under the wa rranty.
6 720 608 542 34 Maintenance and service Static Gas Press ure: “ WC P1 Operating Pressure: “ WC The P1 minimum operating gas pressu re is 3.5" WC for Natural Gas a nd 8" WC for Prop ane. Do not proce ed in adjusting CO 2 until press ure is at or above these levels, but not to exce ed 10.
6 720 608 542 Maintenance a nd service 35 Final Read ings P2 CO 2 Reading: % CO 2 P1 CO 2 Reading: % CO 2 Fig. 57 Ad justing P1 CO 2 level Fig. 58 Ad justing P2 CO 2 level CO 2 range (%) Max. CO level (measured) Nat. Gas max. input P1 7.5 % - 8.1 % < 250 ppm min.
6 720 608 542 36 Maintenance and service 6.5 Program values This section describes details on programming the appliance. For most applications the factory defaul t values will robust and s table ope ration. Only adjust the factory setti ngs if the installation requires changes as indicated in t he appropriate sect ion of this manual.
6 720 608 542 Maintenance a nd service 37 6.6 Control board diagnostics 1. Turn on/of f switch on w ater heater to off (O) position. 2. Press and hold t he program ( ) button whi le turning the on/off swi tch to the on (I) po sition. T he display w ill cyc le throug h a startup procedur e including the sof tware version.
6 720 608 542 38 Troubleshoot ing 7 Troub leshootin g 7.1 Introduction Many of the q uestions customer s ask regarding operation o f this uni t can be a nswered by following the troubleshooti ng steps as ou tlined below. Visit our web site at www.bo schhotwater.
6 720 608 542 Troubleshooti ng 39 heater. Then open all of the hot water taps served by the heater. Wait 10 minutes and che ck all t aps for water flow. There should be no wa ter flowing. Any continuous flow o f wa ter, s mall or large, indicates a crossover and must be corrected.
6 720 608 542 40 Troubleshoot ing 5. Lac k of adeq uate ga s pre ssure. In adequate gas pressure wil l cause the fuel-to-air mixtu re (CO 2 ) to be out of adjustment. This will re sult in u nstable burn er flames and noise. Ensure gas pre ssure is in accordance with spe cifications in section 3.
6 720 608 542 Problem sol ving 41 8 Pro blem solvi ng 8.1 Error code diagnostics i To remove error code from the display, press t he reset button. Display Caus e Solution Fault in the flue gas limiter. 1. Check continuity of the flue gas limiter (see Fig.
6 720 608 542 42 Problem solvin g (Flashing) Out let temperature senso r not sensing expected o utput temperature. 1. Check that the s ensor is firmly attached to the hot water pipe (see Fig. 70 , page 55 ). 2. Clean inlet f ilter screen and clear any debris out of shower heads, faucet aerators and whole house filters.
6 720 608 542 Problem sol ving 43 Over-temperature detected by outlet temperature sensor o n hot water pipe. Temperature > 185 °F 1. C heck that the senso r is firmly a ttached to the vertica l section of the hot water pipe (see Fig. 70 , page 55 ).
6 720 608 542 44 Problem solvin g No flame ionization detected with water flow. 1. Verify that all manual gas shut off valves are open. 2. Check gas type, see Fig. 2 , page 6 . 3. Reset error code and open a water tap to cycle the heater in an effort to purge air on new i nstallations.
6 720 608 542 Electrical dia gram 45 9 Elect rical diagr am Fig. 59 Ele ctrical scheme 1 Intlet w ater temp erature s ensor 2 Outlet water temp erature se nsor 3 Backfl ow temper ature sen sor 4 Casca.
6 720 608 542 46 Sensor resist ance charts 10 Sensor r esistance charts Fig. 60 Fig. 61 Out let t e mperature s enso r cha racteri sti cs 3 2 3 7 4 2 4 7 5 2 57 6 2 6 7 7 2 77 8 2 8 7 9 2 9 7 10 2 10 .
6 720 608 542 Sensor re sistance charts 47 Fig. 62 Bac k Fl ow characteri sti cs 3 2 3 7 4 2 4 7 5 2 5 7 6 2 6 7 7 2 7 7 8 2 8 7 9 2 9 7 10 2 10 7 112 117 12 2 12 7 13 2 13 7 14 2 14 7 15 2 15 7 16 2 .
6 720 608 542 48 GWH 2700 E S Functional schem e 11 GWH 270 0 ES Fun ctional sch eme Fig. 63 Func tional scheme.
6 720 608 542 Interior compon ents diagram and parts list 49 12 Interior componen ts diagr am and p arts list 12.1 Interior components Fig. 64 C omponents 1 Flue ga s collec tor 2 Heat exchanger 3 Fla.
6 720 608 542 50 Interior compon ents diagram and parts list Fig. 65 Applia nce overview.
6 720 608 542 Interior compon ents diagram and parts list 51 12.2 Components diagram 12.2.1 Group 1 Fig. 66 C omponents Diagram 9 9 8 5 1 2 3 6 7 9 10 12 9 14 16 17 11 13 15 15 4 6720902973.
6 720 608 542 52 Interior compon ents diagram and parts list 12.2.2 Group 2 Fig. 67 Comp onents Diagram 1 3 2 4 5 6 7 8 9 672 0902974 .AA JF Item Description Reference 1 Heat exc hanger 8 705 406 422 .
6 720 608 542 Interior compon ents diagram and parts list 53 12.2.3 Group 3 Fig. 68 C omponents Diagram 15 14 1 3 4 6 7 8 2 12 9 11 13 16 17 5 672 09029 75.
6 720 608 542 54 Interior compon ents diagram and parts list 12.2.4 Group 4 Fig. 69 Comp onents Diagram 9 2 14 1 3 4 5 6 7 8 11 11 12 13 10 6720608158-73.
6 720 608 542 Interior compon ents diagram and parts list 55 12.2.5 Group 5 Fig. 70 C omponents Diagram Item Description R eference 1 Wate r valve w ith engine 8 708 505 024 2 O-rin g 8 700 205 147 3 .
6 720 608 542 56 Interior compon ents diagram and parts list 12.2.6 Group 6 Fig. 71 Comp onents Diagram 15 1 2 3 7 6 9 5 11 13 16 14 10 12 8 4 6720 90297 8.AA JF Item Descrip tion R eference 1 Cont rol unit 8 70 7 207 2 57 2 Fuse T2.5A 1 904 52 1 342 3 Fuse T1.
6 720 608 542 Protecting the environment 57 13 Protectin g the en vironmen t Packing The p acking box may be fully re cycled as confirmed by the recyclin g symbol . Componen ts Many parts in the heater can be fully re cycled in the end of the product life.
6 720 608 542 58 Limited War ranty 14 Limited Warranty General Aquastar w ater heaters are warra nted by th e Manufacturer (BOSC H) through Bosch Thermotechnolo gy Corp.
6 720 608 542 Limited Wa rranty 59.
6720608542 © 200 9 Bosch Thermotechnology Corp ., Londonderr y, N H a ll rights reser ved Replac ement Pa rts available from : Bos c h T ermotecnologia SA Estrada de C acia 38 0 1 - 856 Aveiro - PO RTU GAL BOSCH THERMOT ECHNOLOGY CO RP. 50 Wentworth Avenue Londonderry, NH 03053 Tel.
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