Bosch Therm 8000 S GWHC 27 CTDE Installation And Operating Instructions Manual Download

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Installation and operating instructions

Condensing Gas Water Heater

Therm 8000 S

6 720 680 174 (2014/05) ZA

Read installation manual prior to installation of this unit!
Read user manual before putting this unit in operation!

Observe the warnings in the manuals!
The installation room must fulfill the ventilation requirements!

Installation by an authorised person only!

Summary of Contents for Therm 8000 S GWHC 27 CTDE

Page 1: ... 6 720 680 174 2014 05 ZA Read installation manual prior to installation of this unit Read user manual before putting this unit in operation Observe the warnings in the manuals The installation room must fulfill the ventilation requirements Installation by an authorised person only ...

Page 2: ...5 5 2 Selection of location for installation 15 5 3 Minimum distances 15 5 4 Installation of fixing bracket 15 5 5 Installation 16 5 6 Water connection 17 5 7 Connecting the condensate water drain to the appliance 17 5 8 Gas connection 18 5 9 Installation of the exhaustion accessory and admission of air 18 5 10 Filling the condensate trap 20 6 Admission exhaustion accessories accessory Ø 80 125 mm...

Page 3: ... functions reliably and safely The installer isresponsiblefor thesafety and environmental compatibility of the installation The heater must be serviced annually Only original spare parts must be used Explosive and highly inflammable material Do not store or use inflammable material paper solvents paints etc near the heater Combustion air and surrounding air To avoid corrosion the combustion air an...

Page 4: ...pactburnerwithlowNOxemissions Modulating Gas Valve with constant gas air ratio control LCD panel with back light Failure codes for easy diagnostics and repair Electronic ignition Modulating water valve Cold water temperature sensor Water flow sensor Hot water temperature sensor Safety devices Flame failure device ionization flame rod sensor Back flow temperature sensor Inlet temperature sensor Out...

Page 5: ...014 05 Therm 8000S Technical Characteristics and Dimensions 5 2 6 Dimensions Fig 1 1 Front cover 2 Key pad 3 Cold water inlet Ø 4 Gas connection Ø 5 Hot water outlet Ø 6 Support bracket 7 Condensate water drain Ø 32mm ...

Page 6: ...Control unit 6 Flue Gas Adaptor not included 7 Room sealed box temperature sensor 8 CO2 CO measuring point 9 Exhaust temperature sensor 10 Over heat prevention temperature limiter 11 Observation window 12 Ignition electrodes 13 Backflow temperature sensor 14 Ionization sensor 15 Secondary air fan 16 Pressure point gas valve 17 Gas valve 18 Key pad 6720608948 06 1AL 2 1 4 5 3 7 6 9 11 12 13 14 15 1...

Page 7: ...ection 6 Ionization sensor 7 Water flow sensor 8 Room sealed box temperature sensor 9 Heat exchanger overheat sensor 104 C 10 Gas valve 11 Exhaust temperature sensor 12 Water valve 13 Primary fan 14 ON OFF switch 15 Secondary fan 16 AC plug 17 Main connection 19 Ground post 20 Antifreeze kit connection 21 Fuse 22 Fuse 20 1 20 1 16 1 16 1 JP5 JP6 JP7 JP8 JP2 M PS M M E FS T 104 C T 110 C 2 1 4 5 6 ...

Page 8: ...a 2 0 Consumption LPG Butane G30 kg h 3 8 Natural gas G20 m3 h 5 1 Water data Maximum permissible pressure pw bar 12 Minimum operating pressure pwmin bar 0 3 Minimum activation flow l min 1 9 Maximum water flow with temperature rise of 25 C l min 27 Combustion products contents DIN 4705 Exhaust gas flow LPG Butane kg h 79 3 Temperature of gases at extractor grill Exhaust temperature at maximum pow...

Page 9: ...inlet pipe when the appliance is used after long periods of inactivity for example may delay ignition Inthiscase iftheattemptstoignitegoontoolong thesecurity mechanisms prevent operation Security cut off due to excessive water heating The control unit detects the heating temperature via a NTC resistor located in the hot water exit tube and the temperature limiter located in the heat exchanger If i...

Page 10: ...11 Remote control indicator 4 2 Before operating the appliance Confirm that the gas type of the heater matches the gas supply you will be connecting the heater Open gas valve CAUTION Do not use any cleaning aggressive or corrosive agents to clean the window 6720608920 31 1AL CAUTION The initial startup of the heater must be realized by a qualified technician who will provide the client with all th...

Page 11: ...registration of the remote control must be done near the appliance Hot water tap closed Turn OFF the appliance Fig 4 1 Pressandholdtheprogrammingkey Fig 4 3 pressON OFF button Fig 4 1 to connect the appliance Release programming key only when LCD displays 188 The LCD displays the signal P2 Press key until it displays the signal P3 Press programming key again for about 1 second LCD panel displays o...

Page 12: ...ure Fig 16 Remote control temperature selection Batteries replacement Remove the 2 screw from the remote control back Open the cover Remove the old batteries and correctly place the new ones Close the remote control assuring that both screws are tighten screwed Precautions when using the batteries Donotdisposeofbatteriesasdomesticwaste Takethemto appropriate collecting places for recycling Do not ...

Page 13: ...g manner Press oneoftheselectionkeys or for5 seconds 4 10 Purge the appliance If there is a risk of freezing proceed as follows Close the cold water valve of the water heater Open hot water taps to drain the water heater Remove all the water contained inside of the appliance 4 11 Reset button If the LCD shows the error symbol do not shut off power or unplug the heater Follow instructions below to ...

Page 14: ...ser which already selected a different temperature Appliance will be automatically unlock 5 minutes after closing hot water tap 5 Installation instructions DANGER Explosion Always close the gas valve before doing any work in gas components The installation the electric connection the gas installation the installation of the exhaustion admission conducts as well as thestartupmustbecarriedoutbyaqual...

Page 15: ...c connection at the place were the appliance will be installed Assure that exists at the place of the installation a sewer point for the condensed waters Combustion air The air admission grill must be located in a well ventilated area To avoid corrosion products such as solvents inks inflammable gases glue or domestic detergents containing halogenic hydro carbons or any product that mightprovoke c...

Page 16: ...ure that all indicated parts are included Remove the plastic caps from the gas and water connections Loosen the two Philips head screws located on bottom rear of cover Fig 23 Fig 23 Loosen the two screws Lift front cover panel upward and remove Fig 24 Fix the appliance in a vertical position CAUTION Possibility of damage caused by foreign bodies Purge all tubes to eliminate possible foreign bodies...

Page 17: ... appliance 5 7 Connecting the condensate water drain to the appliance Fig 26 1 Condensate trap cover 2 Condensate water drain Fig 27 Appliance drain installation CAUTION Never rest the heater on the gas or water connections For ease of installation it is recommended that the water be connected followed by the rest of the connections Makesurethatconnectionsdoesn tobstruct the condensate trap cover ...

Page 18: ...ed must be used to connect the heater to the gas main Tighten the threaded head on the gas inlet Fig 28 1 and use the copper Fig 28 2 extremity to solder the pipe to the main Fig 28 3 Fig 28 1 Gas piping 5 9 Installation of the exhaustion accessory and admission of air For the installation of the accessory they should be following the manufacturer s instructions 5 9 1 Installation of the accessory...

Page 19: ...6 720 680 174 2014 05 Therm 8000S Installation instructions 19 Tighten the 4 screws of the accessory of admission of air Fig 29 2 Fig 29 6720608920 24 1AL 2 1 2 2 2 ...

Page 20: ... Putthebluegasketprovidedwiththeappliancebetweenthe appliance and the accessory Tighten the 3 screws of the concentric accessory Fig 31 Concentric accessory 1 Concentric accessory 2 Accessory 8 705 507 042 5 10 Filling the condensate trap 6720608920 25 1AL 2 1 2 2 DANGER Before the first start up of the appliance afteralongperiodofinactivityorwhenever it proceeds to the cleaning of the condensate ...

Page 21: ...tallation Please proceed as follows Remove front cover see Fig 24 Open the four clips and remove the combustion cover Remove the clip and disconnect the drain tube see Fig 33 Fig 33 Fill the condensate trap by pouring approx 14 oz 400ml of water into the top of the drain tube To avoid damage to the appliance use a funnel in this operation see Fig 34 Fig 34 Filling the condensate trap after install...

Page 22: ...80 125 7 719 002 764 AZB 606 1 Concentric pipe with 2000mm Ø80 125 7 719 002 765 AZB 607 1 Elbow 90 Ø80 125 7 719 002 766 AZB 608 1 Elbow 45 Ø80 125 7 719 002 767 AZB 832 1 Elbow 30 Ø80 125 7 719 002 768 AZB 919 Concentric vertical terminal Ø80 125 with 1393 mm adapter with measuring point 7 719 002 849 AZB 371 Adapter for flat roof 7 716 050 046 AZB 921 Adapter with measuring point 7 719 002 851 ...

Page 23: ...ormation For that reason such flue configurations should be avoided 6 3 Explanation of Symbols on Fitting Diagrams Lightly grease seal on flue side with solvent free grease e g Vaseline Fig 35 Push flue kit fully home in this case 50 mm insertion depth Fig 36 Drill two 3 mm diameter holes in the combustion air pipe Maximum drilling depth 8 mm It is essentialthat fluepipeis not damaged Fig 37 Secur...

Page 24: ...th accessory nº 7 709 003 732 Fig 39 Ref Description Minimum distance A Installation next to window Installation next to door Installation near of any open for air recirculation 1 250 m B C D Clearance to side wall 1 250 m E Clearance to roof or gutter 1 m F Clearance to the ground 1 200 m G Clearance to gas meter or regulator 1 500 m Table 7 Installation clearances ...

Page 25: ...sion exhaustion accessories accessory Ø 80 125 mm 25 6 4 2 Exhaustion type B23 Fig 40 6 4 3 Exhaustion type C13 Fig 41 6720608920 36 1AL Ø 80 mm Ø 80 mm Ø 80 125 mm Ø 135 mm est 6720608948 11 1AL Ø 80 mm Ø 80 mm 6720608948 09 1AL Ø 80 125 mm ...

Page 26: ...14 05 Therm 8000S 26 Admission exhaustion accessories accessory Ø 80 125 mm 6 4 4 Exhaustion type C33 Fig 42 6 4 5 Exhaustion type C43 Fig 43 6720608948 10 1AL 100 100 Ø 80 125 mm Ø 135 mm est 6720608920 28 1AL Ø 80 mm ...

Page 27: ...5 mm Ø 135 mm est DANGER Risk of electric shock Always disconnect the power supply to theapplianceatthemainsbeforecarrying outanyworkontheelectricalsystemsand components CAUTION Fuse protection The appliance should have an independent connection to the electricity mains protected by a differential 30 mA switch and beearthed Inareassubjectto frequent storms a storm protector should be installed The...

Page 28: ...47 3 Fig 47 Fuses position After checking the fuses reinstall all parts in reverse order Fig 47 3 8 Installation instructions 8 1 Factory regulations Natural gas HeatersdesignedforNaturalgasH G20 arefactorysealedfor deliveryafterthevaluesonthecharacteristicspanelhavebeen checked Liquid gas Butane heaters G30 are factory sealed for delivery after the values on the characteristics panel have been ch...

Page 29: ...5 l m and burner will light If heater display reverts to P2 open more hot water fixtures to allow sufficient flow Press until P1 reappears on the display Operate all other gas appliances on same gas piping system at maximum output Record lowest operating gas pressure reading in Table 8 Gas pressures lower than 2 kPa for Natural Gas or 3 0 kPa for Butane will result in insufficient degree rise to t...

Page 30: ...heater display reverts back to P2 open more hot water fixtures to allow sufficient flow Press until P1 reappears on the display Record the CO2 reading in P1 in the Table 10 below Analyser reading may take several minutes to stabilize Press buttonuntilP2appears Unitwillrampdownto low fire and the water flow should decrease Adjusting CO2 If P1 CO2 level is out of range Loosen yellow painted philips ...

Page 31: ...l parts in reverse order Return slotted screw cover to original position and tighten the philips screw Fig 52 Reinstall Torx protection cover Fig 53 Remove CO2 analyser probe and reinstall flathead screw with gasket in exhaust collar Press ON OFF button to turn OFF the heater Press ON OFF button to turn ON the heater Heater is ready for normal operation Note Thisscrew adjustmentisvery sensitive an...

Page 32: ...2 12 20 See chapter 8 2 P3 Remote Controls installed _0 _0 6 See chapter 4 6 P4 Access to Diagnostic Mode E 0d 10f See chapter 8 5 P5 Cascade Mode nO nO CC To activate the cascade mode it s necessary to install the kit cascade cod 7 736 500 272 P6 Temperature Unit C F C See chapter 8 5 P7 Appliance Type Cd Condensing Cd Condensing nC Condensing Non condensing note incorrect setting will cause erro...

Page 33: ...o turn off the appliance Press ON OFF button to turn ON the appliance Heater is ready for normal operation 8 5 1 Working hours Toseehowmanyhourstheappliancehasworked pleaseenter the Diagnostic menu Select the sub mode H0 Write the number that shows in the display Select the sub mode H1 Write the number that shows in the display Select the sub mode H2 Write the number that shows in the display Afte...

Page 34: ...lues in Table 18 SumthetotaloftheTable17 withthetotaloftheTable18 and to put the result in the line 6 of the Table 18 This is the total equivalent vent length Example Exhaust 5 units of 1m straight sections 1 unit of 1m straight sections Total length 6 meters 2 90 elbows Intake 4 units of 1m straight sections Total length 5 meters 2 90 elbows Example table Equivalence in meters Description Ø80 80m...

Page 35: ...ig 54 As soon as 188 is displayed release Program button and the display should read P2 Press one time to access the program P2 In the LCD display is visible the attributed value factory value 12 Press or to choose the fan speed suitable with your installation see tab 23 for separate tubes admission exhaust Ø 80 80mm or Table 24 for concentric conducts Ø 80 125 mm Press and hold 5 sec Program butt...

Page 36: ...nt with the first elbow and the accessory of wind rain protection Fan speed P2 From 1 m until 6 m 12 from 6 1 m until 14m 13 from 14 1m until 16 m 14 Table 23 Mode Conduct length 1 1 Total conducts lengths of Table 21 Do not count with the first elbow and the accessory of wind rain protection Fan speed P2 From 1 m until 3 m 12 from 3 1 m until 7 m 13 from 7 1m until 8 m 14 Table 24 Do not set P2 t...

Page 37: ...ssurized water jet If the dirt resists soak soiled parts in hot water with detergent and clean carefully If necessary de scale the interior ofthe heat exchanger and connection tubes Reassemble the heat exchanger using new joints Remount the regulator on its support Burner Inspect the burner annually and clean as necessary Check the burner through the observation window if there are liquids or fiss...

Page 38: ...heat exchanger unit maintenance Shut off power Disconnect power cord Dismantle all inlet outlet pipes and the condensate tube from the condensing heat exchanger unit Remove the condensing heat exchanger unit from the appliance by pulling it towards you Dismantle all parts for inspection and cleaning Fig 59 Condensing heat exchanger Check the condensing heat exchanger for any obstruction Flush the ...

Page 39: ...s follow Remove the clip and disconnect the drain tube see Fig 61 Fig 61 Fill the condensate trap by pouring approx 14 oz 400ml of water into the top of the drain tube To avoid damage to the appliance use a funnel in this operation see Fig 62 Fig 62 Filling the condensate trap after installation Loosen the three screws of the control unit Fig 56 Put the control unit in service position by engaging...

Page 40: ...ts in reverse order 9 4 Startup after maintenance Check all water and gas joints Read chapter 4 Operating instructions and or chapter 8 Installation instructions Check gas pressure burner pressure Make sure combustion cover is securely fastened Ensure the exhaust vent adaptor is properly sealed Check for gas leakage Check for water leakage ...

Page 41: ...cted or in short circuit or appliance selection on P7 mode is not correct 1 Check exhaust temperature sensor connection see Fig 2 9 2 Check sensor 100 ohm short circuit 3 Check P7 mode The correct selection is Cd Backflow temperature sensor defect happens if sensor is disconnected or short circuit 1 Check backflow temperature sensor connection see Fig 2 13 2 Replace exhaust temperature sensor Outl...

Page 42: ...ange its speed to meet desired temperature 6 Possible defective control unit call the Technical Assistance No rotational speed sensor signal from primary fan 1 Disconnect power supply cord and check wire connections on back side of fan and the two connectors on the control board 2 Check supply voltage 3 Possible defective component in fan or defective control unit call the Technical Assistance Fla...

Page 43: ...0 C The appliance will close the burner and lock non volatile 1 Check inlet outlet vent pipes 2 Check if secondary fan connections are disconnected 3 Check if venting specifications are met Long vent lengths venting with more than three elbows blocked vent or combination venting may cause this failure 4 Call the Technical Assistance Overheat sensor ECO open circuit resets when cooler temperatures ...

Page 44: ...ire connections to ignition group on the lower front of the heat exchanger are secure 4 Verify that venting specifications are met Improper venting may cause premature failure of the flame sensor rod 5 Check that the minimum power fan speed has been adjusted to the proper value See chapter 8 6 6 Check and adjust CO2 readings Ionization error at standby 1 Loose connection to the flame ionization ro...

Page 45: ... devices OK close one gas valve waiting time of 1s passed flame off Hot water delivered at selected temp Appliance ready to start Fan speed correct Ionization off Temp limiter closed Temp sensors ok Over heat protection ok See error code table INPUTS FANSPEED WATER TEMP WATERFLOW OUTPUTS FANSPEED WATERFLOW YES YES YES YES 2nd Safety time of 5s passed 3rd Safety time of 5s passed Water flow Calculu...

Page 46: ... the best possible technology and materials under economic considerations to protect the environment Packaging We participate in the recycling program of the respective country to ensure optimal recycling All of our packaging materials are environmental friendly and can be recycled Old appliances Old appliances contain valuable materials that should be recycled The assemblies can beeasily detached...

Page 47: ...one by unauthorized people When the appliance or parts present changes or malfunctions due to misuse of unauthorized people When the operation and use of the appliance is done under conditions which are not allowedin the installation or user s manual Whentherearechangestothewarrantytermsandbreakage of seals When damages are caused by transportation or accidents When damages are caused by inadequat...

Page 48: ...Bosch Thermotechnology South Africa Robert Bosch Pty Ltd 15th Road Randjiespark 1685 Midrand SOUTH AFRICA 6720680174 ...

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