Viessmann C3TB, Installation And Service Instructions For Contractors

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15
Arrangement of excess export system when con-
nected into a sub-distribution board
RCD RCD
K
400 V / 230 V~
L
H
G
F kWh
Z2
1~
E
A
C
D
B
~
N M
kWh
Z1
kWh
Z3
Fig. 8
A
Vitovalor 300-P
B Internal circulation pump
C
Internal consumers
D
GS protection
E
ON/OFF switch
F
Sub-distribution board
G
On-site consumers
H
Meter cupboard
K
Property boundary
L Low voltage grid
M
Inverter (DC/AC converter) S
EMAX
= 1.5 kVA
N Fuel cell stack
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)
Arrangement of excess export when connected
into a main LV distribution board
RCD RCD
kWh
Z1
H
AC 400 V / 230 V~
K
G
F
kWh
Z2
1~
E
A
C
D
B
kWh
Z3
~
N M
Fig. 9
A
Vitovalor 300-P
B Internal circulation pump
C
Internal consumers
D
GS protection
E
ON/OFF switch
F
Meter cupboard
G
On-site consumers
H
Property boundary
K
Low voltage grid
M Inverter (DC/AC converter) S
EMAX
= 1.5 kVA
N
Fuel cell stack
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
Notes on connecting to the mains supply
(cont.)
5775 636 GB
Installation