Specifications
4.7.1
Connection
of
the
mains
cable
As
shown
on
the
figures
the
live
conductor
*nicn
is coloured
brown
must
be
connected
to
the
terminal
marked
with
a
L on
the
appliance
inO
to
tne
tetminal
marked
L or coloured
red
on
the Dluq.
The
neutral
wire
coloured
blue
must
6e
ioni"ct"O
to
the
terminal
marked
with
a
N
on tne
aoptiance
and
to
the
terminal
marked
N
oi
coioureO
black
on
the
plug' The
earthwire
coloured
qreen
and
yellow
must
be
connected
i" rn"
otine
two
teiminals
marked
O
on
the
"opiiin""
and
to the
terminal
marked
wrth
an
E
oi svmbol O
or
coloured
green or
green ano
vellow
on
the
plug.
lf
no
room
thermostat
or
iimer
is
installbd,-terminal
3
and
4 must
be
linked.
a.
Fuses
2
A
(delay
action).
b.
Terminals
for
pump regulating'
i-
Terminals
for hppliance
input
connections'
4.7.2
Connection
of
Vaillant
room
--
thermostat
with
clock
(no'
394)
Connection
of
room
thermostat
is made
to
the
terminiri
g
anO
4. lt
is
recommended
to
install
a
Vaillant
room
thermostat
(RT) with
accelerating
resistance.
The
room
thermostat
must
De
inJiiiteo
on
an
inner
wall
which
is
influenced
neiiner
Ov
current
of
air
nor by
the sun,
in
the
livinq
rooin.
During
the
installation
of
the
room
therftostat
the
manufacturer's
indications
must
be
followed.
For
the
sake
of
economy
and
iotfurt
the
Vaillant
combi
boiler
should
be
requlated
by
a
room
thermostat
with
icceleiating
resiitance.
lf the
room
thermostat
is
not connected,
to operate
the
heating
system
ior
i"iting
purposes'after
the
installation,
the
,nit "an
bi
op6rated
by
provisional application
oi
a
OriOge
between
ihe
terminals
3
and
4'
Wfren
tfrE
room
thermostat
is
wired
in
this
bridge
must
be
removed.
4.7.3
PumP
control
The
pump
may
be
controlled
in one
of
three
ways
(see
fig.
20):
Settinq
I
(as
suPPlied)
For-use
with
clock
and
room
thermostat
systems.
Pump
is switched
off by
clock
or
room
thermostat.
Setting
ll
For"use
with
thermostatic
radiator
valve
svstems.
Pump
is switched
off
by
clock
or
o'as
valve
switih
when
gas
valve
closes'
seltting
ttl
Purip
runs
Permanently
and
is
not
affected
bY
external
controls.
1
@@_a
..'\L*=
-j
LEf,-l
@a
Fig.18
Sz
i
t
14