Bosch GWH-425-HN-N - Manuals

6 6 720 607 026 W A R N I N G : F l a m m a b l e m a t e r i a l s , g a s o l i n e , pressurized containers, or any other items or articlesthat are potentially fire hazards must NOT be placed onor adjacent to the heater. The appliance area must bekept free of all combustible materials, gasoline a...

7 6 720 607 026 VENTING Vent pipe connection. WARNING: Do not reduce the vent pipe size. See Fig. 4 for high altitude installations The heater must be vented to the outside following all localordinances and specifications for installing a gas appliancevent or chimney. The heater must be located as c...

8 6 720 607 026 To check the draft : Close all doors and windows to the outside.Turn on all appliances that force air out of the building.These include all exhaust/ventilation fans, furnaces, clothesdryers, wood burning stoves, etc.Open all doors between the 425 H N and these otherappliances.With th...

9 6 720 607 026 GAS CONNECTIONS NOTE: The 425 H N is supplied with a gas pressureregulator that must be installed on the heater beforeattaching the gas supply line. See fig. 5. Failure to installthe gas regulator as shown in figure 5 will be a violationof CSA certification of the unit. The regulator...

10 6 720 607 026 Nominal Iron Pipe Black Iron Pipe Size, Length of Pipe, Feet Inches 10 20 30 40 50 60 70 80 90 100 125 150 1/2 275 189 152 129 114 103 96 89 83 78 69 63 3/4 567 693 315 267 237 217 196 185 173 162 146 132 1 107 732 590 504 448 409 378 346 322 307 275 252 1 1/4 220 149 121 103 913 83...

11 6 720 607 026 OPERATING INSTRUCTIONS Before proceeding with the operation of the heater makesure that the system is filled with water.Open the cold water inlet supply to the heater fully.Open a hot water faucet to permit the water to fill the heaterand the piping and to eliminate the air trapped ...

12 6 720 607 026 The position you select on the temperature adjustment knobwill depend on the temperature of the incoming water (50°Fis average in the U.S.). In warm weather regions where theincoming cold water is generally warmer, or during the hotweather months in some other areas a midway setting...

13 6 720 607 026 Fig. 10 - Characteristic Pilot Flame (Pilot assembly shown without pilot hood) MAINTENANCE AND SERVICE REVIEW MAINTENANCE TABLE ON THE BACK OF THISMANUAL. Approximately once a year, the 425 HN should be checkedand cleaned. To remove the front cover, first remove theincandescent part...

14 6 720 607 026 Problems are stated in upper case, bold face. Most commoncauses for the problems follow in order of likelihood. Thesuggested solutions require that the cover be taken off. Todo this, remove incandescent particle tray, pull off thetemperature adjustment knob and unscrew and remove th...

18 6 720 607 026 Fig. 15 - INTERIOR COMPONENTS DIAGRAM AND PARTS LIST

21 6 720 607 026 Service Labor Costs This warranty does not cover any labor costs associatedwith service, removal or re-installation of part(s). All suchcosts must be borne by the Purchaser. Additionally, thiswarranty does not cover any labor costs associated withservice, removal or re-installation ...

VU LCANO Termodomésticos S.A. Estrada de Cacia 3801 - 856 Aveiro - PORTUGAL Recycled paper © 2004 Controlled Energy Corporation, Waitsfield, VT all rights reserved Replacement Parts available from North American Distributor CONTROLLED ENERGY CORP. 340 Mad River Park Waitsfield, Vermont 05673 Phone 8...