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instAllAtion
instAllAtion
2. Use ½" union nuts with inlets for Ø 12 mm diameter soldered
»
joints (24). Make a junction with 12 mm copper pipe (25).
7.8
electrical connection
The unit must be connected to the protective earth
!
terminal.
In the case of concealed connection, the power lead must
»
protrude at least 30 mm, with insulation, from the wall
J
The cable pipe (
, 26) which is also supplied must be used to
»
provide a seal against water penetration.
Connect the connecting lead to the terminal block.
»
H
Priority circuit
DHF 13 C, DHF 15 C, DHF 18 C, DHF 21 C, DHF
24 C, DHF 13 C3, DHF 13 C-A:
when combined with other electrical equipment, e.g. electric
storage heaters, the load-shedding relay should be used:
a Load-shedding relay (see "Special accessories").
b Control line to switching relay of the second unit (e.g. electrical
storage heater).
c Control contact, opens when the DHF ... C compact control is
switched on.
Load shedding takes place when the DHF ... C compact control is
operated!
The load shedding relay may only be connected to the
!
middle phase conductor of the unit terminal block.
7.9
completing the installation
1. In the case of surface-type water installation and/or in the
»
case of connection to flexible water pipe systems, the rear panel
must be secured in the lower section with an additional screw
J
(
, 27).
2. Open the three-way isolating valve (
»
i
3.
in the case of surface-type fitting only:
»
Break out the pipe lead-through openings (a) in the device cover
»
cleanly, using a file if necessary. The guide pieces (b) supplied
with the unit must be fitted into the lead-through openings.
7.10 First start-up
(may only be carried out by a qualified installer)
Fill and deaerate the unit. Note: danger of running dry! Open
»
1
a hot water fitting downstream of the unit until the cold water
2
supply pipe and the unit are free of air. With regard to „air",
3
see „Important notes".
1
4
Install the device cover and secure with the screw. Insert the
»
1
2
5
locking cap and turn to the right (lock).
2
3
1
1
6
1
Turn the output selector to the left hand and the right hand
»
3
4
2
2
7
2
stop, to engage it.
4
3
5
3
8
3
Switch on the mains power supply.
»
5
4
6
4
9
4
6
5
Check the operating mode of the instantaneous water heater.
7
»
5
10
5
6
7
8
6
Peel off the protective foil from the control panel.
»
6
11
7
8
9
7
7
12
8
9
10
8
8
13
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9
10
11
9
9
14
10
F
g
.
d
, 6).
Handover of the unit!
Explain the function of the unit to the user and familiarize him or
her with its use.
Important instructions:
Draw the user's attention to possible hazards (scalding).
»
Hand over these instructions for careful retention.
»
All the information set out in these instructions must be noted with
the utmost care. It provides guidance on the safety, operation,
installation, and maintenance of the unit.
7.11 special accessories
Special accessories are available from your local supplier.
taps
— WKMD – twin-lever pressure-tested kitchen tap
— WBMD – twin-lever pressure-tested bath tap
Plug g ½ a
These plugs are required if you use twin-lever pressure-tested
taps for finished walls other than the ones recommended by us.
installation sets for installation on finished walls
— Solder fitting – copper pipe for solder connection Ø 12 mm.
— Compression fitting – copper pipe.
universal mounting frame
— Mounting frame with electrical wiring.
load shedding relay lr 1-a
The load shedding relay for installation in the electric distribution
board enables priority control of the instantaneous water heater
when electric storage heaters are being operated simultaneously,
for example.
DHF C |
21
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