Instruction/ maintenance manual of the product GWH-635-ES Bosch Appliances
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Water heat ers for u se with Natural an d L.P.G. GWH-635-ES T emperat ur e Modulat ed wit h Elec t ronic Ignit ion Suit able for heat ing pot able w ater only - Not a pproved fo r spac e heat ing purpose s (Intend ed for vari able fl ow applicatio ns with multiple t apping poi nts) GWH- 635-ES -N GWH- 635-ES -L 6 720 607 072 (04.
6 720 607 072 2 Index Index 1 Warning 2 2 Applianc e details 4 2.1 Features 4 2.2 GWH-635-ES Speci fications (Technical d ata) 4 2.3 Dimensions an d Minimum installation clearances 6 2.4 Genera l rules to follow for safe operation 7 2.5 Proper location for installing your heater 7 2.
6 720 607 072 Warning 3 What t o do if you s mell gas • Clos e gas v alve. O pen w indows. • Do not t ry to li ght any ap pliance. • Do n ot t ouch a ny e lectrical switch; do not use a ny phone in your buildi ng. • I m me di at el y c a ll yo ur ga s su pp li er f ro m a n ei g hb or ’s phone.
6 720 607 072 4 Applia nce de tails 2 Applianc e details 2.1 Featur es Parts • Tou ch Pa d interfa ce contro l • High power pre-mix compact burner with low Nox emissions • Modulating Gas Valve with constant gas:a i r ratio contr ol • Modulating water valve for improved c omfort and tempe rature co ntrol.
6 720 607 072 App lia nce details 5 • Minim um recommended water pressure: 30 PSI (2.07 bar) • Connecti ons: – Bottom of heate r Comb ustion •N O x ≤ 55 ppm •C O ≤ 250 ppm •C O 2 level set from fact ory, see cha pter 9.
6 720 607 072 6 Applia nce de tails 2.3 Dimension s and Minimum ins tallation clear ances Fig. 5 Dimension s 1 Cover 2 On/Off switch 3 Rese t butt on 4 LCD di splay 5 Program bu tton 6 Temperature buttons Fig.
6 720 607 072 App lia nce details 7 2 . 4 G e n e r a l r u l e s t o f o l l o w f o r s a f e operatio n B 1. Y ou shoul d fol low thes e instruc tions when y ou instal l your h eater.
6 720 607 072 8 Applia nce de tails 2.6 Cleara nces The GWH- 635-ES is design cert ified for installat i on o n a comb ustible wall (see 2. 7 Mo unting installatio n) provid ed the floor cover ing bel ow the heate r is noncom bustibl e.
6 720 607 072 App lia nce details 9 – b) In un confined s paces in buildi ngs of convent ional frame, ma sonry, or metal const ruction , in filtrati on air is normal ly adequat e t o provide air for combustion.
6 720 607 072 10 Applia nce de tails The maximum flue gas exhaust t emperature on the GWH -635-ES is 437°F ( 225°C) Venting Optio ns Exhaust vent diameter and material * Exhaust ven t maximum length.
6 720 607 072 App lia nce details 11 The ap pliance should be located a s c lose to the point of termina tion as poss ible. The maximum ven t length is 26 feet ( 8 m) with one 90 degre e elbow.
6 720 607 072 12 Applia nce de tails Room sea led ins tallation (TWIN PIPE SYSTEM) Fig. 12 Combus tion air pipe: ≤ 26 ft (8 m) Exha ust vent pipe: ≤ 26 ft ( 8 m) A con densate t rap (drai n t ee) .
6 720 607 072 App lia nce details 13 Recomm ended e xhaust vent te rminator position Fig. 16 * Subject to local c odes and anticipat ed snow level ** Other equip m ent that op erates with a mechanic al air inlet may require great er distances, reference m anufact urer's instructio ns Ref.
6 720 607 072 14 Applia nce de tails Supportin g the exhaust vent sys tem and the use of an externa l conden sate t rap Extern al c ondens ate tr aps B A conden sate trap must be used in any sidewa l l exha ust vent instal lations w hen the tota l v ent l ength is ≥ 5 ft (1.
6 720 607 072 App lia nce details 15 Fig. 20 Vert ical venting installation - Masonry Chimney (combusti on air piping not being shown) A cond ensate tr ap (drain t ee) must b e us ed for a ny vertica l e xhaust vent installati on. T he condensa te t rap should be positioned as nea r to the t op of the heat er as possible.
6 720 607 072 16 Applia nce de tails FOR NA TU RAL GAS Maxi mum Capac ity o f pip e in Cubic Fee t of Ga s pe r Hour fo r Gas Press ure of 0 .5 Ps ig or less and a Pres sure drop of 0. 3 in Water Col umn (0 . 75mba r).(Based on a 0.60 Specifi c Grav ity G as) Btu n u mber s given in thou sands.
6 720 607 072 App lia nce details 17 2.11 Gas line sizing B It i s stro ngly recom mended that the Natur al Gas pipe be Bla ck Iron p ipe the entire distanc e from t he outside meter to th e inlet of the g as co nnection. ¾” B l a c k I r o n p i p e u p t o 2 0 f e e t ( 6 .
6 720 607 072 18 Applia nce de tails 2.13 Water con nections W h e n f a c i n g t h e h e a t e r , t h e ¾ ” c o l d w a t e r i n l e t i s o n t h e b o t t o m r i g h t a n d t h e h o t w a t e r o u t l e t i s o n t h e b o t t o m left .
6 720 607 072 App lia nce details 19 2.14 Ele ctrical conne ctions The GW H-635 -ES requi res an elec trical po wer sup ply f r o m a 1 2 0 V A C 6 0 H z c i r c u i t a n d m u s t b e p r o p e r l y ground ed. A means f or switching off th e 120VAC power supply must be provided.
6 720 607 072 20 Applia nce de tails When the hea ter is i n op eration you wi ll hear its power vent fan and burner opera ting. Upon turning off the hot water flow the p ower vent fan will cont inue to operat e f o r u p t o 6 0 s e c o n d s t o e x h a u s t a l l f l u e g a s e s .
6 720 607 072 Operat ion inst ructions 21 3 Operation in structions Fig. 26 1 On/O ff switch 2 Reset button 3 Progr am Ke y 4 Increasing temperature se lector 5 Decreasing temper a ture se lector 6 LCD displ ay 3.1 Power On B T o st art the a pplia nce switch the bu tton to pos ition ( I ).
6 720 607 072 22 Operat ion ins tructi ons Setting the w ater tempera ture The desire d temp erature o f the hot w ater can be adjuste d on t he front control p anel of t he heater.
6 720 607 072 Operat ion inst ructions 23 3.3 Use of remote co ntrol accessory Fig. 30 R emote control The wirel ess re mote control a ccessory and the tempera ture sel ector b uttons on th e front of the water heate r operat e ident ically. Cont act your distr ibutor or CEC to o rder if t he re mote control access ory is prefer red.
6 720 607 072 24 Maint enance and se rvice 4 Maintenance and service The unit shoul d be checked once a year by a gas technic ian. If rep airs are need ed, the re pairs sho uld be done b y a ga s tech nician To r emov e fron t cov er B R e m o v e p l a s t i c d e c a l s o n f r o n t p a n e l ( P a g e 5 , F i g .
6 720 607 072 Troubleshooting 25 Test by following 4th bullet under BURNERS DO NOT IGNITE WHEN HOT WATER IS TURNED ON. LOW WATER FLOW/PRESSURE • T o o m a n y h o t w a t e r a p p l i c a t i o n s a r e b e i n g us ed si m u lt an e ou s ly or to o mu c h fl o w i s be in g demande d The G WH-635 -ES will e ffectively su pport two 2.
6 720 607 072 26 Troubleshooting Display Cause Solu tion E9 Temperature limiter opened circuit (over heat). Tri ps at 22 0F (104C) . Check connections.* Check heat exchanger con dition.* EA No ionization during safety time (safety t i me out). Check gas pr essure.
6 720 607 072 Electr ical diag ram 27 6 Electrica l diagram Fig. 36 Electrical scheme 1 Intlet water temp erature sensor 2 Ioniz ation sensor 3 Water flow sensor 4 Over heat protection 5 Temperature l.
6 720 607 072 28 GWH-6 35-ES Func tional s cheme 7 GWH -635-ES F unction al sch eme Fig. 37 Func tional scheme.
6 720 607 072 Inte rior c ompo nent s dia gram an d parts list 29 8 Interior components diagram and parts list 8.1 Interi or compo nents Fig. 38 C omponents 1 Cover 2 On/O ff switch 3 Reset button 4 L.
6 720 607 072 30 Inte rior c omponent s dia gram a nd pa rts lis t 8.2 Comp onents diag ram Fig. 40 Comp onents Diagram.
6 720 607 072 Inte rior c ompo nent s dia gram an d parts list 31 8.3 Parts list Item Descri ption Reference 1 Front cover 8 7 05 42 1 83 7 2 Shield 8 7 05 506 66 1 3 Heat exc hanger 8 7 05 406 285 4 .
6 720 607 072 32 Specia l adjust ment for measur ing and ad justin g CO2 level s 9 Special adjustment for measuring and adjusting CO 2 levels The CO 2 can only be adjuste d by a certif ied gas techni cian w ith a calibrat ed CO 2 ana lyzer . 9.1 Adjust ing the uni t Fact ory set tings of this applian ce are listed in table 7.
6 720 607 072 Specia l adjus tment for mea suring and adju sting CO2 lev els 33 Fig. 43 Adjusting Leave “Program” mod e B Turn ON/OFF switc h in position OFF and then ON again . i NOTE: turn ing screw clockw ise decreases CO 2 lev el, turning coun terclock wise inc reases it.
6 720 607 072 34 Protect ing the environ ment 10 Protecting t he environment Packin g Th e p ack ing box may b e fu lly rec yc led as c onf ir med by the rec ycling symb ol . Component s Many parts in the he ater can be fully rec ycled in the en d o f t h e p r o d u c t l i f e .
6 720 607 072 Fifteen Year Limit ed Warr anty 35 11 Fifteen Year Limited Warranty Gene ral BOSCH PRO w ater h eaters are wa rranted by t he Manufa cturer (BO SCH) through Co n tro lled Energy Corp.
Replacemen t Parts available from North Americ an Distributor CONT RO L LE D E N ERG Y CORP . 340 Mad Ri ver Park W aitsfie ld, V ermont 0 567 3 Phone 86 6-330- 27 30 Fax (802) 496-6924 www .protan kless.co m techsupport@protankle ss.com VU L CAN O T e rmodomésticos S.
An important point after buying a device Bosch Appliances GWH-635-ES (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Bosch Appliances GWH-635-ES 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 Bosch Appliances GWH-635-ES - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bosch Appliances GWH-635-ES you will learn all the available features of the product, as well as information on its operation. The information that you get Bosch Appliances GWH-635-ES will certainly help you make a decision on the purchase.
If you already are a holder of Bosch Appliances GWH-635-ES, 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 Bosch Appliances GWH-635-ES.
However, one of the most important roles played by the user manual is to help in solving problems with Bosch Appliances GWH-635-ES. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bosch Appliances GWH-635-ES 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
