Bosch GWH 1000 - Manuals

6 720 608 124 Appliance details 5 2.4 Dimensions and installation clearances Fig. 3 Dimensions in Inches and (mm) 4 Heat exchanger 5 Burner 10 Temperature control 11 Water valve 20 Gas connection 26 Output control 36 Front cover 37 Hole for fixing to wall 38 Exhaust pipe to connector 39 Draft divert...

6 720 608 124 6 Installation instructions 3 Installation instructions 3.1 Introduction Please follow these instructions. Failure to followinstructions may result in: B Damage or injury. B Improper operation. B Loss of warranty. If you are unable to perform the tasks required to installthis heater pr...

6 720 608 124 Installation instructions 7 3.4 Mounting Heater Remove cover and inspect. B Remove the temperature control. B Remove the outer case by pulling it forwards and then lifting upwards. B Ensure that the flue terminal is clear. B After inspection, replace front cover. Install incandescent p...

6 720 608 124 8 Installation instructions 3.5 Combustion air requirements The AquaStar water heater holds cold water in itscopper heat exchanger and water valve when not in use.Because of this, any cold air that comes down throughthe unit's vent pipe is capable of freezing thesecomponents. This Inst...

6 720 608 124 Installation instructions 9 3.6 Venting B Minimum vent pipe diameter: 4 inches B Minimum vertical vent height: 6 feet, with no elbows B Establish 12 inch rise before any elbow The heater must be vented to the outside following alllocal ordinances and specifications for installing a gas...

6 720 608 124 10 Installation instructions Masonry chimney Masonry chimneys shall be built and installed inaccordance with NFPS 211 or local codes. A minimum4" diameter gas vent pipe (metal double wall Type B),or an approved clay flue liner or a listed chimney liningsystem must be used when vent...

6 720 608 124 Installation instructions 11 3.7 Gas piping & connections Before connecting the gas supply, check the ratingplate on the right side of the heater to be sure that theheater is rated for the same gas to which it will beconnected.In the United States: The installation must conform wit...

6 720 608 124 12 Installation instructions FOR NATURAL GAS Maximum Capacity of pipe in Cubic Feet of Gas per Hour for Gas Pressure of 0.5 Psig or less and a Pressure dropof 0.3 in Water Column (0.75mbar).(Based on a 0.60 Specific Gravity Gas) Btu numbers given in thousands.Copper tubing is prohibite...

6 720 608 124 Installation instructions 13 3.8 Measuring gas pressure Connecting manometer B Shut off gas. B Remove front cover and locate inlet gas pressuremeasuring point on the right side, see Fig. 14. B Loosen screw from test point on the right side andconnect manometer tube on test point. Fig. ...

6 720 608 124 14 Operation instructions Fig. 15 Plumbing connections and pressure relief valve shown with optional Webstone servicevalves 3.10 Recirculation application Since recirculation through the heater is notpermissible, the following drawing is provided to outlinea proper recirculation applic...

6 720 608 124 Operation instructions 15 4.2 Lighting instructions B STOP! Read the previous safety information. B The gas valve must be turned off by sliding the gas valve button to all the way to the left. Fig. 17 B Wait five (5) minutes to clear out any gas. If you smellgas, STOP! Follow “B” in th...

6 720 608 124 16 Operation instructions ensure that the hot water temperature will remainsteady, although the water flow demand might vary. Theoutput temperature can be adjusted with either thetemperature adjustment knob or the gas control slide. Temperature adjustment knob The temperature adjustmen...

6 720 608 124 Maintenance and service 17 5 Maintenance and service 5.1 Maintenance intervals The GWH 1000 P requires periodic maintenance. The below time maintenance intervals should keep the unit operating for many years. Every year B Inspect inlet water filter screen ( 5.2) B Inspect pilot assembl...

6 720 608 124 18 Maintenance and service 5.4 Main burners The main burner flames should be blue, with a moreintense blue cone in the center core. Yellow flamescould be a sign of wrong size gas orifices or dirtyburners, a blockage on the heat exchangers fins. Ifsome burners have yellow flames while o...

6 720 608 124 Troubleshooting 19 6 Troubleshooting 6.1 Introduction Many of the questions customers ask regardingoperation of this unit can be answered by following thetroubleshooting steps as outlined below. Visit our website at www.boschhotwater.com for more detailedtroubleshooting. For best resul...

6 720 608 124 20 Troubleshooting heat exchanger are available at www.boschhotwater.com.8. If steps 1 through 7 do not correct the problem, thenconfirm that the gas pressure is adequate. Ensure gaspressure is in accordance with manufacturer'sspecifications (see Chapter 3.9). A gas pressurereading is ...

6 720 608 124 Troubleshooting 21 2. Adjust the gas control slide button from three flameposition towards the one flame position for coolertemperatures. If the water is still too hot, thetemperature adjustment knob on the water heatermaybe set too high. Lower the setting and test watertemperature. Th...

6 720 608 124 22 Troubleshooting 6.11 Noise when heater is running 1. Confirm adequate flow rate through the unit. Withcold supply shut off to the unit, disconnect hot outletside to the unit. Place a half gallon jug under hot outletto catch water. Open cold supply and measure flow rateout of the uni...

6 720 608 124 Protecting the environment 23 7 Protecting the environment Packing The packing box may be fully recycled as confirmed bythe recycling symbol . Components Many parts in the heater can be fully recycled in the endof the product life. Contact your city authorities forinformation about the...

6 720 608 124 24 Interior components and diagram parts list 8 Interior components and diagram parts list 8.1 Interior components Fig. 27 Functional scheme 4 Heat exchanger 5 Burner 10 Temperature adjustment selector 11 Water valve 20 Gas connection 22 Flexible hot outlet 26 Gas control slide 30 Pilo...

6 720 608 124 Interior components and diagram parts list 25 8.2 Components diagram Fig. 28 Components Diagram 50 49 32 48 46 45 43 28 29 30 31 25 17 18 19 20 21 23 26 24 27 33 34 35 13 36 37 22 38 39 40 41 42 44 47 8 9 11 12 13 14 15 16 10 6 4 5 51 52 1 2 3 7 6720608124-10.1 JF

6 720 608 124 26 Interior components and diagram parts list 8.3 Parts list Item Description Reference 1 Front cover 8 705 431 243 0 2 Shield 8 705 506 759 0 3 Temp. control knob 8 702 000 304 0 4 Draft Diverter 8 705 505 438 0 5 Exhaust pipe union Ø128 8 705 504 150 0 6 Angle bracket 8 708 003 190 0...

6 720 608 124 Twelve Year Limited Warranty 27 9 Twelve Year Limited Warranty General Aquastar water heaters are warranted by theManufacturer (BOSCH) through BBT North America.BBT North America (BBTNA) will furnish a replacementheat exchanger and will furnish a replacement of anyother part which fail...

Recycled paper © 2006 BBT NORTH AMERICA CORPORATION, Waitsfield, VT all rights reserved Installer Checklist, to be performed by installer upon installation Serial Number ___ ___ ___ ___ ___ ___ ___ ___ (8 digit serial number is located on rating plate on right side panel) Gas Pressure Reading* Stati...