Viessmann Vitovalor 300-P Installation And Service Instructions For Contractors page 15

Notes on connecting to the mains supply
Arrangement of excess export system when con-
nected into a sub-distribution board
G
RCD RCD
H
kWh
Z3
kWh
Z1
K
Fig. 8
Vitovalor 300-P
A
Internal circulation pump
B
Internal consumers
C
GS protection
D
ON/OFF switch
E
Sub-distribution board
F
On-site consumers
G
Meter cupboard
H
Property boundary
K
Low voltage grid
L
Inverter (DC/AC converter) S
M
Fuel cell stack
N
Z1 Balancing bi-directional meter
Z2 Net electricity meter (standard delivery
Vitovalor 300-P)
Z3 Bi-directional energy management (not relevant for
billing by the grid operator)
A
E
F kWh
B
Z2
1~
C
D
M N
~
400 V / 230 V~ L
= 1.5 kVA
EMAX
(cont.)
Arrangement of excess export when connected
into a main LV distribution board
G
F
kWh
RCD
Z3
kWh
Z1
Fig. 9
Vitovalor 300-P
A
Internal circulation pump
B
Internal consumers
C
GS protection
D
ON/OFF switch
E
Meter cupboard
F
On-site consumers
G
Property boundary
H
Low voltage grid
K
Inverter (DC/AC converter) S
M
Fuel cell stack
N
Z1 Balancing bi-directional meter
Z2 Net electricity meter (standard delivery
Vitovalor 300-P)
Z3 Bi-directional energy management (not relevant for
billing by the grid operator)
Preparing for installation
A
E
kWh
B
Z2
1~
RCD
C
D
M N
~
H
AC 400 V / 230 V~ K
= 1.5 kVA
EMAX
15