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5. Installation
Installing the Wall Bracket
Note: If you install this instantaneous water heater in exchange for a conventional
instantaneous water heater, there is generally no need to drill holes for the wall brack-
et, in this case step 2 would not be necessary.
Thoroughly rinse the water supply pipes before installation to remove soiling from the
pipes.
1. Using a 12 mm hexagon socket screw key, screw the screw-in nipples into the wall
connections. The seals must be fully screwed into the thread. After tightening, the
double nipples must protrude by 12 – 14 mm.
2. Hold the included mounting template on the wall and align it so that the holes in the
template fit over the double nipples. Mark the drill holes according to the template
and drill them using a 6 mm drill. Insert the included dowels.
3. Pull down the faceplate and unscrew the main hood screw to open the appliance.
4. Loosen the knurled nut to remove the wall bracket and screw the wall bracket to
the wall. Offset tiling or uneven surfaces can be compensated by up to 30 mm with
the aid of the spacers supplied. The spacers are fitted between the wall and the wall
bracket.
Installing Connection Pieces
cold
warm
Note: Fasten the screw nuts with caution, to avoid damage to the valves or the piping
system.
1. As shown in the illustration, screw the cold water connection piece with the union
nut and the ½ inch seal onto the cold water connection.
2. Screw the hot water connection piece with the union nut and the ½ inch seal onto
the hot water connection.
5. Installation
Installing the Appliance
(a)
closed
open
• The electrical power supply cable may be connected in the upper part or is surface
mounted. Only in such case, first follow the steps one through three according to
the description “Electrical connection from above” in chapter “Electrical connec-
tion”.
1. Place the appliance on the heater bracket so that the threaded rod of the wall
bracket fits in the corresponding hole of the appliance. If necessary, slight cor-
rections are possible by carefully bending the threaded rod of the wall bracket.
However, it must be possible to screw on the water connection pipes of the appli-
ance without applying force.
2. Screw the plastic knurled nut onto the threaded rod of the wall bracket.
3. Screw the two ⅜ inch union nuts of the appliance‘s water connection pipes, each
with the ⅜ inch seal, onto the fittings.
4. Open the water supply line to the unit and slowly open (position “open“) the shut-
off valve (a) in the cold water connection piece. Check all connections for leaks.
5. Next, open and close the hot water tapping valve several times until no more air
emerges from the line and all air has been eliminated from the instantaneous water
heater.
Attention: Inspection Panel Opening
If DSN is to be installed in a sealed space (eg. under the ceiling with decorative
paneling), must leave a 600x600 mm inspection panel for future maintenance and
repair.
