sauter LET Series Quick Reference

Receiver LET
Installation instructions for the qualifi ed electrician
List of contents:
1. Description of the 230 V

2. Installation and dimensions

3. Electrical connections

4. Addressing
5. Operation
6. Extended protective functions
7. What to do if...
8. Technical data
1 Description of the 230 V
receiver
Thank you for the trust you have placed in us, and congratulations on
choosing one of our products. It will enable you to control the ambient
temperature of your home in a simple and intelligent manner.
This receiver controls the adjustment of your underfl oor heating,
and it operates in conjunction with the thermostats in the 230 V
system. There is wireless radio communication between the various
components of the system.
The multi-channel receiver is available in various versions. The only
difference between them is the number of outputs that are controlled
(4, 6 or 8 channels) but the basic functions are identical on all the
versions.
2 Installation and dimensions
The receiver is positioned above or near the distributor for your
underfl oor heating. The place where you install it must be clean, and
must be protected against water splashes and ventilated. The single-
channel receiver can also be positioned decentrally.
1. Remove the cover
230 V
1
2. Installing the switching box
max Ø 4.5
Fig. 1 LET240R/LET260R
0505916003 B
single-/multi-channel receiver
~
60 140
°C °F
0 32
single-/multi-channel
~
2
en Quick reference
103
91
85
5
Fig. 2 LET210R
3 Electrical connections
WARNUNG
Electrical connections
Before commencing any work on the electrical connections, you
must fi rst disconnect the device from the mains.
None of the 230 V~ connections must be made live until the
installation has been completed and the housing is closed.
Only qualifi ed electricians or the manufacturer's service staff are
permitted to open the receiver.
There are parts that carry mains voltage behind the cover.
Fig. 3 The receiver must not be left unsupervised when it is open. (Prevent persons other
than specialists, and especially children, from gaining access to it).
230 V~
Fig. 4 LET240R/LET260R
L N
230 V~
Fig. 5 LET210R
LET210R...LET260R
37
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