Installation; Floor Temperature Sensor Installation; Connect The Thermostat; Mounting The Thermostat - TUYA WiFi Touch MCS 750 Benutzerhandbuch

Installation

Floor temperature sensor installation

heating mat cold lead through the second corrugated tube. Do not cross
the cold lead over or place it closer than about 2 cm to the mat heating
wires. Thermostat installation requires a standard plastic wall mounting
box with 230 V AC mains connection cable from the local wiring at the
intended location. A fault-current circuit breaker (30 mA) has to be used.
Double-check that the floor sensor is positioned in a corrugated tube
(Ø16mm) and can be easily removed from; check this during installa-
tion of the tube and again before installation of the screed and floor
covering respectively!

Connect the thermostat

Important!
We recommend to use the services of qualified specialists when installing
the thermostat and heating system. The electrical connection and
connection to the power supply must be performed by a professional
electrician in compliance with the applicable national laws, rules and
regulations. The installation instructions and wiring diagram do not
replace the professional skills of the device installer. Disconnect your
local wiring from the mains before connecting the thermostat or
disconnecting the device to check or replace it.
86.0
65.5
Install the mounting box with suitable screw spacing of 60 mm and the
intermediate junction box if necessary (e.g. if two or more heating mats
are to be connected and controlled with one thermostat). Lead power
supply cable, installation wires of the floor heating, and temperature
sensor installation wire to the box. Energize the supply cable and find
the phase wire and the neutral wire using voltmeter; mark these wires.
Afterwards, de-energize the power supply cable.
The floor temperature sensor cable
has to be placed into a separate
conduit according to EN 61386-1.
It should be placed at heating level
directly underneath the heating mat
by chiselling out a channel in the
subfloor. The sensor should be
centrally positioned between two
heating conductors, which is in
the middle of a cable loop. Route the
24.5 9.0
60.0
51.0
Connect all required wiring to the thermostat using its terminals with
screw fastening.
• The floor temperature sensor must be connected to the two terminals
marked with NTC (polarity does not matter).
Important!
If the installation distance is shorter than the sensor installation wire
(standard 3m), the sensor cable must be shortened accordingly.
• The supply voltage (230 V AC) is applied to terminal N and L, with the
phase wire (detected by voltmeter) – to terminal L, and the neutral
wire – to terminal N.
• The heating element installation wires are to be connected to termi-
nals N and L
LOAD
must be connected to the protective earthing (PE) line via an external
terminal contact (not included in the scope of delivery).
L
N N L
O
A
D
Max. Load 16 A
Important!
In order to keep the thermal impact on the relevant device components
low in the event of improper use under continuous load and to achieve
maximum service life, it is recommended to switch (connect) a maximum
load current of 13 A (2990 W).

Mounting the thermostat

1. Remove the front cover (part with display). Carefully press the latch
on the upper side of the front cover using a thin slot screwdriver and
gently pull the front cover off in your direction.
11.3
2. Make the electrical connection.
3. Insert the rear cover of the device into the wall mounting box and
fasten with two screws, left and right at the same height.
4. Insert the display into the frame and align the connector contacts on
the rear with the connector receptacle on the rear cover.
5. Carefully press the front cover with the frame against the rear cover
(inserted in the flush-mounted box before) until the latch lock in
place. Make sure that the front cover tightly adjoins the rear part of
the thermostat.
Important!
Avoid damaging or bending the contacts of the connector during
installation.
1
3
Receptacle of
the connector
; the screening braid output (yellow-green wire)
LOAD
L
L
NTC
O
A
D
t
230 VAC
2
Front cover Rear cover
Display
11