Bosch Appliances Model GWH 425 manual Dimensions and installation clearances

Page 5

Appliance details

2.4Dimensions and installation clearances

Fig. 3 Dimensions in Inches and (mm)

4Heat exchanger

5Burner

10Temperature control

11Water valve

20Gas connection

26Output control

36Front cover

37Hole for fixing to wall

38Exhaust pipe to wall

39Draught diverter with flue gas monitor

40Gas valve

49Observation window

102Piezo

 

Model GWH 425

TOP (A)

12 inches (306 mm)

FRONT (B)

4 inches (100 mm)

BACK

0 inches

SIDES

4 inches (100 mm)

BOTTOM (C)

12 inches (306 mm)

 

 

Fig. 4 Minimum clearances

 

Dimensions inches

 

(mm)

 

GWH 425 PN

 

 

 

A

16.73”

(425)

 

 

 

B

25.75”

(655)

 

 

 

C

13.15”

(334)

 

 

D

5.11” (130)

 

 

 

E

21.25”

(540)

 

 

 

F

2.55”

(65)

 

 

 

G

1.18”

(30)

 

 

H

3/4”

 

 

 

Table 1 Dimensions in inches (mm)

6 720 608 034

5

Image 5
Contents GWH-425-PN-N GWH-425-PN-L Index IndexOver heat prevention temperature limiter Water resistant GWH 425 PN specifications Technical dataAppliance details Appliance detailsGeneral rules to follow for safe operation Unpacking the GWH 425 PN heaterDimensions in Inches and mm Dimensions and installation clearancesProper location for installing your heater Installation instructionsHeater placement and clearances Installation instructionsScrews Incandescent particle tray Mounting HeaterAppliances located in confined spaces Combustion air requirementsVenting Existing interior masonry chimney Installation instructions Masonry chimneyGAS Connections Gas piping & connectionsFor Natural GAS Connecting the pressure relief valve PRV Connecting manometer Shut off gasMeasuring gas pressure Water connectionsOperation instructions For your safety read before operating your water heaterRecirculation application Operation instructionsTo turn off appliance Lighting instructionsDraining water from heater Setting the water temperatureTemperature adjustment knob Maintenance intervals Maintenance and serviceWater valve PilotMain burners Vent assemblyMineral scale build-up Operate the circulating pumpPilot lights, but goes out when button is released TroubleshootingIntroduction Pilot does not light Pilot goes out during or after hot water useCheck for a clogged inlet water filter screen see chapter Hot water temperature fluctuates at tapBurners do not light with water flow Water is too hot Noise when heater is runningWater is not hot enough Burners ignite without hot water flowBurners do not operate cleanly yellow flames when operating Saving water resources Protecting the environmentProtecting the environment Interior components Interior components and diagram parts listInterior components and diagram parts list Components Diagram Components diagramDescription Reference Parts listFifteen Year Limited Warranty Serial Number Bosch Group Bosch Water Heating Mad River ParkGas Pressure Reading Static Waitsfield, VT all rights reserved