Boiler Connections - Viessmann Vitomax LW M64 Installation Instructions Manual

Boiler connections

M148
Boiler size
Boiler flow and return
For permiss. operating
pressure
Safety valve
For permiss. operating
pressure
Drain outlet
For permiss. operating
pressure
Tab. 7
M62C
Boiler size
Boiler flow and return
For permiss. operating
pressure
Safety valve
For permiss. operating
pressure
Tab. 8
Note
Drain connector type for boiler sizes 1 to C
As R 1 connector
■
½
■ As DN40 PN40 connector (optionally via threaded flange)
M64B
Boiler size
Boiler flow and return
For permiss. operating pressure 6,
10 bar
Temperature spread
For permiss. operating pressure 16
bar
Temperature spread
*3 4-hole version
12
6 bar
PN16 DN
10 bar PN16 DN
6 bar
PN16 DN
6 bar PN40 DN
10 bar PN16 DN
10 bar PN40 DN
6 bar
PN40 DN
10 bar PN40 DN
1
6 bar 150 150 150 150 200 200 200 200 250 250 250
PN16 DN
10 bar PN16 DN 150 150 150 150 200 200 200 200 250 250 250
16 bar PN25 DN
–
16 bar PN40 DN 150 150 150 150
6 bar 50
PN16 DN
10 bar PN16 DN
–
10 bar PN40 DN 40
16 bar PN40 DN 32
40 K PN16 DN
30 K PN16 DN
20 K PN16 DN
40 K PN25 DN
30 K PN25 DN
1 2 3 4
80 100 100 125 125 150 150 200 200 200
80 100 100 125 125 150 150 200 200 200
50
– – –
32 40 40
–
– – – –
25 32 32 40
32 32 32 32
32 32 32 32
2 3 4 5
200 200 200 200 250 250 250
– – –
–
50 65 *3 65 *3 65 *3
50 50 50 50 65
– – – –
40 40 40 40
3 4
200 250 250
250 250 300
300 300 350
200 250 250
250 250 300
5 6 7 8
50 65 65 80
*3 *3
– – – –
50 50 65
*3 65
–
40
– – –
32 40 40 40
32 40 40 40
6 7 8 9
– – – –
65 *3 65 *3 80 80
*3 65 *3 65 *3 65 *3
– – – –
50 50 50 65
5 6 7
250 300
300 350
400 400
250 300
300 350
9 A B
250
250
80 100 100
– – –
80
*3 65 *3
– – –
40 40 40
40 40 40
A B C
250
250
250
– – –
80 100 100
80 80
65 *3
– – –
65 65 65
8 9
300 300
350 350
400 450
300 300
350 350