Primary Circuit: Water/Water, Cascade - Viessmann VITOCAL 300-G PRO Type BW 190 Installation And Service Instructions Manual

Primary circuit: water/water, 1-stage/2-stage
Electrical installation scheme
For a summary of electrical connections,
see from page 50 and separate "con-
nection and wiring diagram".

Primary circuit: water/water, cascade

Type BW 190 to BW 2250
Hydraulic installation scheme
20
22
23
24
--2/LP1 X3.8;3.9--
19
---------
27 26 28
21
--2/LP1 X3.8;3.9--
--2/211.1--
25
9
2
Preparing for installation
(cont.)
--2/211.1--
15
1
2
31