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Bosch Model GWH 425 User Manual

Page 7

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Installation instructions

7

3.4

Mounting Heater

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.

Fig. 5

Incandescent particle tray illustration

Mounting heater.
The GWH 425 PN is design certified for mounting on a
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).

B

Hang heater on two L shaped hooks. (See Fig. 8).

Fig. 6

Remove front cover

Fig. 7

Support board

Fig. 8

Secure heater to wall

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.

i

Front cover should be removed in order to
inspect

components

visually

(see

instructions below).

Warning:
B

Do not install this appliance on a
carpeted wall.

Incandescent particle tray

Screws