Page 19
23/03/01
ASSEMBLY INSTRUCTIONS FOR: Ca 7s / BCa 7s
Leg
end
:
1.1
P
ow
er Sw
it
ch
.
1.2
S
um
m
er / W
in
ter
S
w
itc
h.
1.3
H
igh
L
im
it S
T
B Test
Sw
itc
h.
1.4
Boiler Lim
it Therm
ostat.
1.5
Bo
il
er
Therm
ostat Stage 1.
1.6
Boiler Therm
ostat Stage 2.
1.7
Calorifier Therm
ostat.
1.8
H
our
s Ru
n M
eter
St
ag
e 1
.
1.8a
1.9
H
our
s Ru
n M
eter
St
ag
e 2
.
1.9a
1.14
1.20
Bu
rn
er Lo
ck-
ou
t Lam
p
1.21
H
igh
L
im
it Lam
p.
1.23
Fu
se
6
.3
A
.
Legend:
1.
1
Power Sw
itch
O
N
/O
FF.
1.
2
Summ
er
/ W
int
er
Swit
ch.
1.
3
Hi
gh Lim
it
STB
Test
S
w
it
ch
.
1.
4
Bo
iler
Li
m
it
Th
erm
ost
at.
1.
5
Boiler Therm
ostat Stage 1.
1.
6
Boiler Therm
ostat Stage 2.
1.
7
Calorifier Therm
ostat.
1.
8
Ho
urs Ru
n M
eter
Stag
e 1
.
1.
8a
Freq
uenc
y
of
Switc
hin
g
Stage 1 (opt
iona
l)
.
1.
9
Ho
urs Ru
n M
eter
Stag
e 2
.
1.
9a
Freq
uency
o
f Sw
itc
hing
Stage 2 (opt
iona
l)
.
1.
14
Bo
iler
Li
m
it
Th
erm
ost
at
(for
op
eratio
n at
110
ºC
(opt
ion
al
extra).
1.
20
Bu
rne
r Lock-ou
t Lam
p
1.
21
Hi
gh Lim
it
Lam
p.
1.
23
Fuse 6.3
A
.
B2B In
stru
ment C
ontr
ol Pan
el - I
n
ternal
W
iring Diagram
