Both ducts may be oriented in any direction.
Refer to fig. 9 for positioning.
The maximum
overall length of the intake and exhaust
ducts depends on the head losses of the
single fittings installed (excluding the dou-
blers) and must not be greater than 13
mm H
2
O.
For head losses in the fittings,
refer to
Table 2
.
2.7.1
Separate pipe accessories
Kit code 8089911 is supplied for this pur-
pose (fig. 10).
2.10
ELECTRICAL CONNECTION
Wiring external to the appliance must be in
accordance with the current I.E.E Wiring
regulations (BS 7671) for electrical installa-
tion and any local regulations, which apply.
Connection to the mains supply must facili-
tate complete electrical isolation of the
appliance. Either a 3A fused three pin plug
and un-switched shuttered socket outlet,
both complying with BS 1363, or a 3A fused
double pole switch having a 3 mm contact
separation in both poles and serving only
the appliance (and its external controls)
may be used.
The boiler is supplied with an electric cable.
Should this require replacement, it must be
purchased exclusively from SIME. The elec-
tric power supply to the boiler must be
230V - 50Hz single-phase through a fused
main switch, with at least 3 mm spacing
between contacts. Respect the L and N
polarities and the earth connection.
NOTE: SIME declines all responsibility for
injury or damage to persons, animals or
property, resulting from the failure to pro-
vide for proper earthing of the appliance.
2.10.1
Room stat connection
(fig. 15 pos. A)
To gain access to the electronic board con-
nector (3), remove the control panel cover
and connect the room stat to the terminals
TA after having removed the jumper.
The t her mos t at or timer -t her mos t at,
recommended for better room temperatu-
re control, must be class II as specified by
standard EN 60730.1 (clean contact).
WARNING: Applying mains voltage to the
terminals of conector (3) will irreparably
damage the control board. Make sure
that any connections to be made are not
carrying mains voltage.
2.10.2 “Logica Remote Control”
connection (fig. 15 pos. B)
The electrical plant must comply with local
standards and all cables must comply with
low safety voltage requirements of EN
60730. For lengths up to 25 m, use cables
of section 0.25 mm
2
, for longer lengths up
to 50 m use cables of section 0.5 mm
2
.
First of all, assemble and wire the socket
(2), then insert the equipment which will
start-up as soon as it receives current.
To gain access to connector (3) remove the
control panel cover and connect the climate
regulator to terminals CR (6-7).
WARNING: External voltage must not be
connected to terminals 1-2-3-4 of the
"Logica Remote Control".
A telephone remote switch with a zero
potential contact or a window contact can
be connected to terminals 3-4.
Equipment for the checking of civil plants
via a telephone line includes the model
TEL 30.4 LANDIS & STAEFA.
2.10.3
External temperature
sensor connection
(fig. 15 pos. C)
The cables must comply with low safety vol-
tage requirements of EN 60730.
For lengths up to 25 m, use cables of sec-
tion 0.25 mm
2
, for longer lengths up to 50
m use cables of section 0.5 mm
2
.
To gain access to boiler connector (3) remo-
ve the control panel cover and connect the
external temperature sensor to terminals
SE (9-10).
3
TERMOSTATO
AMBIENTE
LOGICA REMOTE
CONTROL
LOGICA REMOTE
CONTROL
SONDA
ESTERNA
1
2
A
B
C
Fig. 15
KEY
1
Control panel
2
“Logica Remote Control” socket
3
Conector (J2)
TA
Room stat (not supplied)
CR Logica Remote Control (optional)
SE External temperature sensor (optional)
SB D.H.W. sensor
EXTERNAL
SENSOR
ROOM STAT
13
