Viessmann FB2B Installation And Service Instructions Manual page 7

Preparing for installation
449
436
370
320
H A
G B
F
C
E
D D
E
C F
B G
A
H
M
K
65
60
140
440
330
220
55
D
E
A
B
C
50
600
(cont.)
A Solar return R ¾
B Heating flow R ¾
C DHW R ½
F
D Gas connection R ½
G
E DHW circulation R ½ (separate
H
accessory)
F Cold water R ½
G Heating return R ¾
H Solar flow R ¾
K Condensate drain to the back into
the wall
L Side condensate drain
M Cable entry area
N DHW safety valve drain
Preparing for installation
50
K
40
L
46
7