The shown diagram is a fundamental and simplified example and
does not contain all components that are necessary in a system.
If the system you are about to install differs from the shown
diagram of a standard heating system, feel free to sketch an
outline for comparison. Adaptation of systems, see section 10.
Circu
it
ind
ica
tor
Circu
it
sel
ect
or
Shif
t
but
ton
Adj
ust
-
men
t
Con
tro
lle
r
mo
de
List of components:
ECL Comfort 301
S1
Outdoor temperature sensor
S3
Flow temperature sensor
S4
Return temperature sensor, circuit I
S5
DHW flow temperature sensor, circuit II
S6
DHW return temperature sensor, circuit II
P1-1 Circulation pump 1, heating, circuit I
P2-1 Circulation pump 2, heating, circuit I
P1-2 ECA 73 / 80 / 86, circulation pump 1, DHW, circuit II
P2-2 ECA 73 / 80 / 86, circulation pump 2, DHW, circuit II
M1
Motorized control valve, circuit I
M2
Motorized control valve, circuit II
Th
is gui
de is a
sso
cia
ted w
ith E
CL C
ard 0
87B
487
5
Inst
alle
r:
By:
Dat
e:
Co
ntr
oll
er m
od
e
Man
ual o
per
ati
on (u
sed o
nly a
t mai
nte
nan
ce
an
d ser
vic
e)
Sch
ed
ule
d op
era
tio
n
Con
sta
nt c
om
for
t tem
per
atu
re
Con
sta
nt s
etb
ack t
em
per
atu
re
Sta
nd
by m
od
e
Arro
w but
ton
s. S
wit
ch bet
ween t
he l
in
es o
f the E
CL
Car
d.
Shi
ft b
utt
on
. Sw
itch
es b
etwe
en t
em
per
atu
res
,
chan
geo
ver p
oin
ts e
tc.
Adj
ust t
em
per
atu
res a
nd v
alu
es e
tc.
Cir
cui
t sel
ect
or f
or s
wit
chin
g bet
ween t
he ci
rcu
its
.
Saf
ety N
ote
To a
voi
d inj
ury o
f per
so
ns a
nd d
am
ag
es to t
he d
evi
ce, i
t is a
bso
lu
tely
nec
ess
ary to r
ead a
nd o
bse
rve t
hes
e in
str
uct
io
ns c
are
fu
lly
.
Nec
ess
ary a
sse
mb
ly, s
tar
t-u
p, an
d mai
nte
nan
ce w
ork m
ust b
e per
fo
rm
ed b
y
qu
alifi
ed a
nd a
uth
ori
zed p
ers
on
nel o
nly
.
Dis
pla
y in
dic
ati
on
s, c
on
tro
lle
d un
its
, L6
6
1
1
ON
2
ON
2
3
ON
A B C D E
A
: P1-
1
Bla
nk = O
FF
ON = O
N
B
: M1
= Op
ens
= Clo
ses
C
: P2-
1
Bla
nk = O
FF
ON = O
N
D
: M2
= Op
ens
= Clo
ses
E
: R3
Bla
nk = O
FF
ON = O
N
