STIEBEL ELTRON FTM S twin 01.05.2006 - 07.04.2008 - Manual (Page 9)

9
English
2. Installation instructions
for the professional
Laying and electrical connection must be carried
out by a qualified installer, observing these
installation instructions.
2.1 Heating element compo-
nents
The heated floor mat cables are glued in an
undulating format onto a self adhesive glass
reinforced fabric.
For mains connection, the heating elements
are connected to a PTC (positive tempera-
ture coefficient) connector, 4 m in length.
1 Heating line
2 self adhesive glass reinforced fabric
3 Sleeve joint
4 PTC connector
5 Temperature sensor (thermostat fitting)
6 Connection to mains supply
(LNE 3 x 1.5 mm²)
7 Connection box
8 Trunking approx. 13 mm
∅ for tempera-
ture sensor
9 Trunking approx. 13 mm
∅ for PTC con-
nectors
2.2 Provisions and Regulations
• The type label is to be noted!
The stated voltage must correspond to the
mains voltage.
• All electrical connection and installation
work must be carried out in accordance
with the I.E.E Regulations, the provisions of
the electricity supply companies, and the
appropriate national and regional provisions.
• It must be possible to isolate the heated
floor mat on all poles from the mains supply
via an additional device with an isolating dis-
tance of at least 3mm. For this, a switched
spur point should be installed.
• Connection to the mains is only possible
using a permanent connection.
• Installation of the connection box (7) in
rooms with a bath and/or shower shoud
not be fitted in protection zones 1 and 2.
• Only the PTC connectors (4) may be shor-
tened or lengthened.
• Sleeve connections (3) must not be put
under tension.
• Expansion joints must not be crossed.
• The heating lines (1)
– must not under any circumstances be
connected directly to the mains;
– must not be fed behind or through isolat-
ing or insulating material;
– must not be bent, twisted or crossed
(bending radius at least 15 mm = reverse
arc at least 30 mm).
– must be enclosed by screeding com-
pound or tile bonding agent along their
whole length completly;
• Laying of the heated floor mat(s) must not
be undertaken at temperatures below 5 °C.
•
Care must be taken that the full area of the
electric heating mat is in direct contact with
the floor surface.
•
The heating cable must be fully covered by
the tile adhesive or levelling compound. Air-
gaps must be avoided.
• When carrying out the laying, current Build-
ing Regulations must be taken into account.
• The substructure must exhibit a tempera-
ture resistance factor of > 80 °C.
2.3 Floor structure
All sub-floors must be dry, solid, clean, free
from separating agents and dirt, crack-free and
resistant to bending.
Sub-fl oors must be suitable for fl oor heating
systems and a ground-coat must be applied.
2.3.1 Floor structure with covering . . .
Care must be taken to ensure that
screed, fl oor covering, bonding agent,
levelling compound etc. are suitable for
fl oor heating systems (see manufacturers’
instructions).
. . . Tiles B
Installation on screed
Lay out the heated mat(s) on the screed floor,
coat with tile bonding agent and fit the tiles
according to manufacturas instructions.
a Floor covering
b Tile bonding agent
c Heating element
d Sub-floor
Installation on wooden fl oors
Install sound and heat insulation board in
accordance with manufacturers recommenda-
tions.
Lay out the heated mat(s) on the boards, coat
with tile bonding agent and fit the tiles accord-
ing to manufacturas instructions.
. . . Carpet, wood, laminate
Installation on screed
Lay out the heated mat(s) on the screed
floor and cover the heated mat(s) with level-
ling compound, so that a smooth surface is
produced and the heat conductor has a 5 mm
covering of levelling compound.
This creates an additional built-up height in-
cluding the heated mat of 8 mm.
Apply the desired covering after drying ac-
cording to manufacturas instructions.
Installation on wooden fl oors
Install sound and heat insulation board in
accordance with manufacturers recommenda-
tions.
Lay out the heated mat(s) on the boards, with
levelling compound, so that a smooth surface
is produced and the heat conductor has a
5 mm covering of levelling compound.
Apply the desired covering after drying ac-
cording to manufacturas instructions.
2.4 Installation
Before laying the heating mat and the floor-
temperature-sensor, a plan has to be drawn
according to the regulations shown on page 2.
In to this plan each single heating mat course,
each floor sensor and each PTC-Connector
(cold lead) must be drawn
The type label (see picture below)
attached to the heated fl oor mats
must be fi lled in, using the appropriate
information, and must be affi xed to these
installation instructions.
2.4.1 Floor temperature probe A C
Prior to laying the heated mat, the tempera-
ture probe (5) of the floor thermostat must
be laid. Attention is to be paid to the following
in this process:
The floor temperature probe is to be:
– laid in trunking (
is part of the special ac-
cessory-set „ FT... ) centrally between two
parallel heating conductors. The empty
trunking is to be recessed into the substruc-
ture flush with the surface;
– laid at a location which is representative for
the room (e.g. centre of the room), so that
the floor temperature which is set at the
control unit can be adhered to.
If the probe is installed at an unfavourable
location defective control actions can occur
as a consequence of the following:
• heat build-up – caused by additional cov-
ering of the probe zone, e.g. by placing a
cupboard – results to a lower tempera-
ture in that area
• covering the largest area of the floor, but
not in the probe zone
• continual draught through an open window
The shortening or extension of the feeler
line is possible up to 50 m with 0,5 mm
2
and double insulation in accordance with
EN 60730-2-1.
For this, the operating and installation instruc-
tions for the thermostat are to be noted.
2.4.2 Laying the mat
Before laying out the floor mat(s) the request-
ed data on the type label must be measured
and listed.
The ground must be prepared with a suitable
priming (manufacturer data to be considered).
Lay out the heated floor mat(s). In this case,
possibly begin with a PTC resistor in the prox-
imity (or directly below) of the wiring box.
For facilitation of work the reinforced fabric is
coated with adhesive. The floor mats stick inde-
pendently on the primed floor and is to a large
extent secured against shifting and slipping.
By separating the reinforced glass fabric, it is
possible to lay several heating paths, accord ing
to requirements (see D ).
Attention must be paid to ensuring that the
heating paths do not cross and that the heat-
ing lines are not bent or twisted.
It is only the fabric (2) which may be
separated, the heating lines (1) must
not be severed under any circumstances.
After laying of the heated mats, the two PTC
connectors (4) are to be laid to the connection