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Mounting Heater - Bosch Model GWH 425 User Manual

Indoor model flow modulated with standing pilot suitable for heating potable water only -
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3.4

Mounting Heater

Warning: before starting installation:
B check that there are no loose parts
inside the appliance
B ensure that gas pipe, gas valve, and
burner have no damage and are
properly fitted.
B Read chapter 2.2 to verify proper gas
type and to check all parts are included
in box.
Front cover should be removed in order to
i
inspect
components
instructions below).
Remove cover and inspect.
B Remove the temperature control.
B Unscrew the cover fixing screws, see Fig. 6.
B Remove the outer case by sliding it forwards and
then lifting upwards.
B Ensure that the flue terminal is clear.
B After inspection, replace front cover and tighten
screws.
Install incandescent particle tray.
B Install incandenscent particle tray using screws
provided as shown in Fig. 5.
Incandescent particle tray
Fig. 5
Incandescent particle tray illustration
Mounting heater.
The GWH 425 PN is design certified for mounting on a
wall.
Warning:
B Do not install this appliance on a
carpeted wall.
The heater must be mounted on a wall using
appropriate anchoring materials. If wall is a stud wall
sheathed with plasterboard, it is recommended that
support board(s), either 1x4's or 1/2" (minimum)
plywood first be attached across a pair of studs and
then the heater should be attached to the support
boards, see Fig. 7.
B Secure the two included L shaped hooks to wall
studs or support board 13 1/4" apart. (See Fig. 7).
6 720 608 034
B Hang heater on two L shaped hooks. (See Fig. 8).
visually
(see
Fig. 6
Fig. 7
Screws
Fig. 8
Installation instructions
Remove front cover
Support board
Secure heater to wall
7

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