76
NERO - BL
AC
K
MARRONE - BR
OW
N
ROSSO - RED
2.7.1
“SOLO 20-30-40-PR 40 OF/30-40 BF” wiring diagram
Fig. 9
KEY
IG
Main switch
TS
Saf
e
ty s
tat
T
C
Boiler s
tat
SP
A
W
at
er pr
essur
e gauge tr
igger
ed light
S
A
P
o
wer on light
SB
Bur
ner “lock out” war
ning light
P
A
W
a
ter switch
P
Pum
p sy
s
tem
B
Bur
ner
TA
R
oom s
tat
C
R
V
A
43.222 unit connect
or
s (op
tional)
SS
Boiler immer
sion pr
obe QA72
1 (op
tional)
SC
Heat
er immer
sion pr
obe QA72
1 (op
tional)
SE
Ext
er
nal t
e
m
p
er
atur
e pr
obe QA
C3
1 (op
tional)
U
A
R
oom unit QAA70 (op
tional)
PB
Boiler pum
p
OP
Time pr
og
ra
mmer
N
O
TE:
When connecting t
he r
oom s
tat (T
A) r
emove t
h
e br
idge
be
tween t
e
rm
inals 4-5.
When connecting t
he R
V
A 43.222 unit r
emove t
he br
id-
ge be
tween t
e
rminals 4-5 and 4-6.
When connecting t
he time pr
og
rammer (OP) r
emove
the br
idge be
tween t
e
rm
inals 5-8.
Summary of Contents for DUETTO 20 OFi
Page 1: ...Solo OF BF Duetto OFi BFi IT ES PT GB CERTIFICAZIONE DEL SISTEMA DI QUALITA AZIENDALE ...
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