AquaStar 125B NGS Bosch Group, BBT North AMERICA, Waitsfield, VT all rights reserved

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MAINTENANCE TABLE see page 13

	EVERY YEAR	EVERY 2 YEARS	EVERY 3-5 YEARS

LUBRICATE WATER VALVE		†

REBUILD WATER VALVE			†

INSPECT WATER FILTER SCREEN	†

INSPECT PILOT ASSEMBLY	†

INSPECT VENT ASSEMBLY	†

INSPECT MAIN BURNER	†

Replacement Parts available:

BBT NORTH AMERICA

Bosch Group

Bosch Water heating 340 Mad River Park Waitsfield, Vermont 05673 Phone 800-642-3111 Fax (802) 496-6924 www.boschhotwater.com techsupport@boschhotwater.com

Recycled paper

VULCANO Termodomésticos S.A.

Estrada de Cacia

3801 - 856 Aveiro - PORTUGAL

©2006 BBT NORTH AMERICA, Waitsfield, VT all rights reserved

Image 24

Contents For Your Safety Table of ContentsFeatures Unpacking the Aquastar HeaterRequired Natural Gas Pressure at inlet tap Front View Side View Model 125BSTOP a Front B Back Sides Floor C Vent Diameter Proper Location for Installing Your Heater General Rules to Follow For Safe OperationCombustion AIR Requirements ClearancesMounting Installation Aquastar 125 B S is design certified for mounting on a wallVenting Figure aMasonry Chimneys Figure C 720 606Vent Adaptor for High Altitude Installations 6 Adaptor Used on High AltitudeGAS Line Sizing For Natural GAS For LP GASMaximum Capacity of Semi-Rigid ColumnMaximum Inlet GAS Flow Pressure Setting GAS Line SizingWater Connections Above 4.500 ft consult your local gas supplierFor Your Safety Read Before Lighting the Pilot Operating InstructionsWhat to do if YOU Smell GAS To Turn OFF GAS to ApplianceMaintenance and Service Pilot burner with air screen/ pilot orificePilot Lights but Flame Goes OUT When Button is Released Pilot Light will not LightAir in the Gas Line Burners do not Ignite When HOT Water is Turned on Gas pressure too lowWater is TOO HOT Water is not HOT EnoughHOT Water Temperature Fluctuates / Unit Deactivated Unbalanced pressure in waterlinesDiagram of AquaStar 125 BS Interior Components Diagram and Parts List Interior Components Diagram Parts List 125BS Flow chart of Aquastar 125 BS Limited Warranty General720 606 720 606 Bosch Group BBT North AMERICA, Waitsfield, VT all rights reserved