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Bosch W 125 T1 Operating & Maintenance Instructions

Instantaneous gas water heater
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Models
W 125...T1
• installation
• operation
• maintenance
The Bosch instantaneous water heater is a high efficiency,
space saving answer to your water heating needs. All
Bosch instantaneous water heaters heat water only as
required; no energy is lost maintaining a large volume of
water at elevated temperatures as in tank-type storage
water heaters.
Suitable for heating potable water only – not approved
for space heating purposes.
READ INSTRUCTIONS CAREFULLY BEFORE INSTALLING
NOTICE TO INSTALLER: Please leave this
manual with the owner or affix adjacent to
appliance.
ASTRAVAN DISTRIBUTORS, LTD.
123 Charles Street
North Vancouver, B.C. V7H 1S1
Phone Canada: (604) 929-5488
Phone USA:
(206) 860-8448
Web Site: www.astravan.com
Note: In case of problems please contact your salesman or installer
Instantaneous gas water heater
WARNING: If the information in this
manual is not followed exactly, a fire or
explosion may result causing property
damage, personal injury or death.
- Do not store or use gasoline or other flamma-
ble vapors and liquids in the vicinity of this or
any other applicance.
- WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call
the fire department.
- Installation and service must be performed by
a qualified installer, service agency or the gas
supplier.

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  Summary of Contents for Bosch W 125 T1

  • Page 1 • installation • operation • maintenance The Bosch instantaneous water heater is a high efficiency, space saving answer to your water heating needs. All Bosch instantaneous water heaters heat water only as required; no energy is lost maintaining a large volume of water at elevated temperatures as in tank-type storage water heaters.
  • Page 2 DIMENSIONS Figure 1 Maximum hydrostatic water pressure - 0.97 MPa (150 p.s.i.) Maximum recommended working pressure - 0.69 MPa (100 p.s.i.) Minimum working pressure - 0.01 1 MPa (2 p.s.i.) at 1.6 Litres/min. (0.5 U.S. Gal/min.) free discharge Minimum recommended inlet water pressure for use with showers 40 p.s.i.g. Altitude Altitude Standard...
  • Page 3: Installation Instructions

    FORWARD This design complies with CAN 1-4.3-77 and ANS1 The BOSCH instantaneous gas water heater is designed to Z21. 1 0.3b 1994 as an instantaneous gas water heater. In operate on natural or propane gas; however, make sure that addition the unit complies with CAN1-2. 1 7-M80 for use at gas on which heater is to operate is the same as specified high altitude, 2.000-4.5000 feet above sea level.
  • Page 4 In Canada, CAN 1-B149 Installation Code for detailed requirements BOSCH water heaters are shipped from the factory with In U.S., ANZI Z223.I/NFPA 54 National Fuel Gas Code the gas pressure regulators preset for the gas shown on the for detailed requirements rating plate to the correct pressure.
  • Page 5: Propane Supply

    Matches, propane regulator must be installed at propane tank to deliver candles, lighters, or other ignition sources shall not be used propane to BOSCH regulator at 11’’ W.C. pressure. for this purpose. PRESSURE TAP...
  • Page 6: Lighting Instructions

    OPERATING INSTRUCTIONS LIGHTING INSTRUCTIONS WARNING 1. STOP! Read the safety information, (first section) of the If the water heater has been damaged or exposed to flood- Lighting Instruction Plate on the cover. ing, fire, or sooting do not operate the heater until all cor- rective steps have been taken by a qualified serviceman.
  • Page 7 Appliance Regulator Pressure Setting HIGH TEMPERATURE LIMIT SWITCH Pressure tap Type of Gas Altitude The BOSCH W125K…instantaneous gas water heater is Inches, W.C. equipped with a high temperature unit switch with a set standart natural 1.41 point of 90°C (194°F). If the water temperature at the sensing (0.2,000 ft.)
  • Page 8: Preventive Maintenance

    (lime) and delimed, if necessary. Thereafter a of flames from burner ports, figure 7. regular schedule, based on initial inspection findings, should be set up to delime the heater. Delivering instructions are available from your Bosch dealer. Figure 7...
  • Page 9 8 700 703 038 8 700 203 027 8 703 305 197 NOTE: THE HOT WATER OUTLET HAS BEEN UPGRADED TO A FLEXIBLE TUBE. NOTE POSITIOON OF ASSEMBLY - FLAT COPPER WASHER INSIDE BUSHING - THEN ATTACHED TO MALE END OF FLEX TUBE. *DO NOT OVER TIGHTEN*...
  • Page 11: Interior Components Diagram And Parts List

    INTERIOR COMPONENTS DIAGRAM AND PARTS LIST Nº Description W125 Front shell 8705401730 Water flow selector handle 8702000218 #N/A Draught diverter 8705505361 Heat exchanger 8705406149 Temperature limit 8707206040 Hose 8700703038 Main burner 8708120011 Main burner 8708120301 8700103008 Washer 8708107002 Sparking plug Pilot burner ( 75 ) 8708105538 11a Filter...
  • Page 12 ASTRAVAN DISTRIBUTORS, LTD. 123 Charles Street North Vancouver, B.C. V7H 1S1 Phone Canada: (604) 929-5488 Phone USA: (206) 860-8448 Web Site: www.astravan.com...
  • Page 13 • installation • utilisation • entretien Le chauffe-eau instantané Bosch est un appareil très efficace et peu encombrant destiné au chauffage de l'eau. Un chauffe-eau instantané Bosch ne chauffe de l'eau que sur demande; et il n'y a aucune perte d'énergie imputable au maintien d'un volume d'eau important à...
  • Page 14: Raccordement - Gaz

    DIMENSIONS RACCORDEMENT – SORTIE D'EAU RACCORDEMENT - Figure 1 OBSTRUÉE Pression d'eau maximum - 0,97 MPa (150 lb/po²) Pression de service maximum - 0,69 MPa (100 lb/po²) Pression de service minimum - 0,011 MPa (2 lb/po²) pour débit de 1,6 litres/min Pression minimum d'admission d'eau recommandée pour l'alimentation d'une douche : 40 lb/po2 Altitude Altitude...
  • Page 15: Instructions D'installation

    INTRODUCTION La conception du chauffe-eau en permet la classification Le chauffe-eau instantané BOSCH est conçu pour être comme «chauffe-eau instantané à gaz» selon les critères alimenté au gaz naturel ou au propane; cependant on doit des normes CAN 1-4.3-77 et ANSI Z21. 1 0.3b 1994 (édition vérifier que le type de gaz disponible est celui qui est spécifié...
  • Page 16 Norme ANSI Z223. 1 (National Fuel Gas Code), pour les É.-U. Le détendeur fourni avec le chauffe-eau BOSCH a été La longueur minimale d'un conduit d'évacuation vertical préréglé à l'usine pour la pression correcte correspondant jusqu'au point de décharge est de 2,5 pi.
  • Page 17: Alimentation En Propane

    Pour l'identification des propane, qui alimentera le détendeur BOSCH sous une fuites, utiliser une solution de savon et eau, ou un autre pression de 11 po (colonne d'eau).
  • Page 18: Instructions D'utilisation

    INSTRUCTIONS D'UTILISATION INSTRUCTIONS POUR L'ALLUMAGE AVERTISSEMENT 1. ATTENTION! Lire l'information de sécurité (première Si le chauffe-eau a été endommagé ou exposé à un incendie section) du panonceau Instructions d'allumage, sur le ou à de la suie, ou si une partie quelconque du chauffe-eau couvercle.
  • Page 19 à cet effet dans la canalisation d'arrivée de gaz THERMOSTAT DE SÉCURITÉ «HAUTE TEMPÉRATURE» juste au-dessus du détendeur (voir la figure 5), alors que le Le chauffe-eau instantané BOSCH W125K... est doté d'un chauffe-eau fonctionne au débit thermique maximum. coupe-circuit de sécurité haute température qui interrompt l'alimentation en gaz à...
  • Page 20: Entretien Préventif

    (tartre) et effectuer éventuellement un détartrage. Selon les observations effectuées lors de l'inspection initiale, on établira un intervalle de détartrage approprié. Consulter le revendeur Bosch au sujet des instructions de livraison. Figure 7...
  • Page 21 8 700 703 038 8 700 203 027 8 703 305 197 NOTE: UN CONDUIT FLEXIBLE AVEC GAINE TRESSÉE EST UTILISÉ POUR LA SORTIE D'EAU CHAUDE. NOTER LA CONFIGURATION D'ASSEMBLAGE : RONDELLE PLATE DE CUIVRE À L'INTÉRIEUR DU RACCORD INSTALLÉ À L'EXTRÉMITÉ MÂLE DU CONDUIT FLEXIBLE.
  • Page 23 ILLUSTRATION DES COMPOSANTS DU CHAUFFE-EAU, ET LISTE DES PIÈCES Nº Description W125 Habillage 8705401730 Manette sèlecteur de débit eau 8702000218 #N/A Anti-refouleur 8705505361 Corps de chauffe 8705406149 Limiteur de température 8707206040 8700703038 Tube flexible eau chaude 8708120011 Brûleur Brûleur PROP 8708120301 Joint 8700103008...
  • Page 24 ASTRAVAN DISTRIBUTORS, LTD. 123 Charles Street North Vancouver, C.B. V7H 1S1 Téléphone (Canada) :(604) 929-5488 Téléphone (É.-U.) : (206) 860-8448 Site Internet : www astravan.com...

This manual is also suitable for:

W125k...W 125...t1