Viessmann Vitovalor PT2 Installation And Service Instructions For Contractors page 18

Preparing for installation
Notes on connecting to the mains supply
Arrangement of excess export system when con-
nected into a sub-distribution board
K
RCD
L
kWh
S1
kWh
Z1
M
Fig. 7
Vitovalor PT2
A
Fuel cell module ON/OFF switch
B
Gas condensing module ON/OFF switch
C
Control unit, gas condensing module
D
Internal circulation pump
E
Internal consumers
F
GS protection
G
Sub-distribution board
H
On-site consumers
K
Meter cupboard
L
Property boundary
M
Low voltage grid
N
Inverter (DC/AC converter) S
O
P Fuel cell stack
S1 Bidirectional energy management meter (not rele-
vant for billing by the grid operator)
Z1 Balancing bidirectional meter
Z2 Export meter (standard delivery on Vitovalor PT2)
18
A
C
D
B
kWh
H
E
Z2
1~
RCD
F
G
O P
~
400V / 230V~ N
= 0.75 kVA
EMAX
(cont.)
Arrangement of excess export when connected
into a main LV distribution board
K
H
kWh
RCD
S1
kWh
Z1
Fig. 8
Vitovalor PT2
A
Fuel cell module ON/OFF switch
B
Gas condensing module ON/OFF switch
C
Control unit, gas condensing module
D
Internal circulation pump
E
Internal consumers
F
GS protection
G
Meter cupboard
H
On-site consumers
K
Property boundary
L
Low voltage grid
M
Inverter (DC/AC converter) S
N
Fuel cell stack
O
S1 Bidirectional energy management meter (not rele-
vant for billing by the grid operator)
Z1 Balancing bidirectional meter
Z2 Export meter (standard delivery on Vitovalor PT2)
A
C
D
B
kWh
E
Z2
1~
RCD
F
G
N O
~
L
AC 400V / 230V~ M
= 0.75 kVA
EMAX