INSTALLATION
Preparation
32 | DEL Plus www.stiebel-eltron.com
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, suchas electric storage heaters, are being op-
erated simultaneously.
Central thermostatic valve (ZTA 3/4)
Use the thermostatic valve for central premixing when operating
an instantaneous water heater with preheated water, for example.
For use in shower operation, the valve must be set to a maximum
of 55°C.
9. Preparation
9.1 Installation location
!
Material losses
Install the appliance in a room free from the risk of frost.
Always install the appliance vertically and near the draw-off
point. For horizontal installation, see chapter "Alternative in-
stallation methods/ Horizontal installation of the appliance".
The appliance is suitable for undersink and oversink installation.
Undersink installation
D0000056242
1
2
1 Cold water inlet
2 DHW outlet
Oversink installation
D0000057030
12
1 Cold water inlet
2 DHW outlet
Note
Mount the appliance on the wall. The wall must have
sufficient load bearing capacity.
9.2 Minimum clearances
≥50≥50
≥90
≥90
D0000060809
Maintain the minimum clearances to ensure trouble-free op-
eration of the appliance and facilitate maintenance work.
9.3 Water installation
Flush the water line thoroughly.
Taps
Use appropriate pressure taps. Open vented taps are not per-
missible.
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 waterinlet.
Permissible water line materials
- Cold water inlet line:
Pipes made from galvanised steel, stainless steel, copper or
plastic
- DHW outlet line:
Pipes made from stainless steel, copper or plastic
!
Material losses
If plastic pipework systems are used, take into account
the maximum inlet temperature and the maximum per-
missible pressure.
Flow rate
Ensure that the flow rate for switching on the appliance is
achieved.
Increase the water line pressure if the required flow rate is
not achieved when the draw-off valve is fully open.
To Next Page
Loading...
