22
X1.
X2.N
UP
2
15
200 W
X1.
X3.8
X3.9
230 V / 50 Hz
230 V; 0.15 A
21
211.1
X1.
X2.N
UP
25
200 W
224.2
F2
Low voltage
16
PT500
F3
17
12
PT500
13
M
1~
M
1~
With a common primary pump
Note
If heat pumps stage 1 and 2 (type BW
351.A07 + BWS) are installed with dif-
ferent rated heating outputs, the different
flow rates mean that two primary pumps
must be used (see page 20).
Preparing for installation
Primary circuit, type BW + BWS (2-stage,…
(cont.)
5609 667 GB