20
| DHF C
www.stiebel-eltron.com
INSTALLATION
Preparation
Installation set, surface-mounted
- Solder fitting – copper pipe for a Ø 12 mm solder connection
- Press fitting – copper pipe
Load shedding relay (LR 1-A)
The load shedding relay for installation in the distribution board
provides priority control for the instantaneous water heater when
other appliances, such as electric storage heaters, are being op-
erated simultaneously.
9. Preparation
9.1 Installation site
!
Material losses
Install the appliance in a room free from the risk of frost.
f
Always install the appliance vertically and near the draw-off
point.
The appliance is suitable for undersink and oversink installation.
Undersink installation
D
00000
42
70
5
1
2
1 Cold water inlet
2 DHW outlet
Oversink installation
D
00000
42
70
6
1
2
1 Cold water inlet
2 DHW outlet
Note
f
Mount the appliance on the wall. The wall must have
sufficient load bearing capacity.
9.2 Minimum clearances
≥50
≥50
≥90
≥90
D
00000
60
80
9
f
Maintain the minimum clearances to ensure trouble-free op-
eration of the appliance and facilitate maintenance work.
9.3 Water installation
Never operate with preheated water.
f
Flush the water line thoroughly.
Flow rate
f
Ensure that the flow rate required to switch on the appliance
is achieved (see chapter "Installation / Specification / Data
table / ON"). If the required flow rate is not achieved when
the draw-off valve is fully opened, increase the water line
pressure.
Taps
Use appropriate pressure taps. Open vented taps are not per-
missible.
Thermostatic pressure valves must be suitable for hydraulically
controlled instantaneous water heaters.
Note
Never use the 3-way ball shut-off valve in the cold water
inlet to reduce the flow rate. The 3-way ball shut-off valve
is intended only to shut off the cold water inlet.
Permissible water line materials
- Cold water supply line:
Pipes made from galvanised steel, stainless steel, copper or
plastic
!
Material losses
If you use plastic pipework in the cold water supply line,
you must observe the following condition:
f
Install a metal pipe approx. 1 m in length at the ap-
pliance cold water connection. Then you can install
the plastic pipework.
Summary of Contents for 074301
Page 56: ...26_02_02_0453...
Page 57: ......
Page 58: ......
Page 86: ...82 DHF C www stiebel eltron com 1 1 1 1 1 1 f 1 1 2 1 1 3 1 2 f f 1 3 2 2 1...
Page 97: ...www stiebel eltron com DHF C 93...
Page 98: ...15 DHF C www stiebel eltron com...
Page 102: ...DHF C www stiebel eltron com 3 MRC MRC MRC MRC...
Page 108: ...5 DHF C www stiebel eltron com 4 00000 0000 000000 Nr 000000 0000 00000 D0000042704...
Page 109: ...www stiebel eltron com DHF C 4 43 3 3 3 2 4 D0000042703 2 2...
Page 110: ...3 DHF C www stiebel eltron com 3 3...