Electrical Connections - Viessmann VITOCAL 222-G Technical Manual

Design information
(cont.)
Note
If several heat pumps are to be installed in one room, add the minimum
room volumes of the individual appliances together.
Taking into account the refrigerant used and the fill volumes, the fol-
lowing minimum room volumes result for the individual heat pump
types:

Electrical connections

Requirements regarding the electrical installation
■ Observe the technical connection requirements specified by your
local power supply utility.
■ Your local power supply utility will provide you with details regarding
the required metering and switching equipment.
■ A separate electricity meter should be provided for the heat pump.
Viessmann heat pumps operate with 400 V~ (in some countries
230 V models are also available).
The control circuit requires a power supply of 230 V~.
The control circuit fuse (6.3 A) is located in the heat pump control
unit.
Insert the on-site cables from the top through an aperture in the rear
top cover into the equipment (see top view of the equipment on
page 9 and 15). Allow a cable length of 1800 mm for connecting on-
site cables inside the appliance, from the cable entry point to the elec-
trical terminal block.
Power-OFF
It is possible for the power supply utility to shut down the compressor
and instantaneous heating water heater (if installed). The ability to
carry out such a shutdown may be a power supply utility requirement
for providing a lower tariff.
This must not shut down the power supply to the heat pump control
unit.
Vitocal 222-G/333-G
Wiring diagram for system example without solar collectors
VITOCAL
Minimum room volume in m
Type Vitocal 222-G/242-G
BWT 106
BWT 108
BWT 110
Vitocal 242-G/343-G
Wiring diagram for system example with solar collectors
A Compact heat pump
B Outside temperature sensor, sensor lead (2 x 0.75 mm
C Collector circuit pump, power cable (3 x 1.5 mm
D Collector temperature sensor, sensor lead (2 x 0.75 mm
E DHW circulation pump, power cable (3 x 1.5 mm
F Power cable, heat pump control unit (5 x 1.5 mm
OFF contact power cable, zero volt
G For power cable (special tariff/load current), see the following
table
H Supply, instantaneous heating water heater (accessory), power
2
cable (5 x 2.5 mm )
K Electricity meter/mains
L Vitotrol 200 remote control, power cable (2 x 0.75 mm
M Natural cooling switching contact, for controlling the underfloor
heating system with central hook-up, power cable (5 x 1.5 mm
Note
If the equipment level is extended or further accessories are installed,
e.g. heating water buffer cylinder, factor in the additionally required
supply, control and sensor cables.
3
Vitocal 333-G/343-G
4.8 5.0
4.8 5.7
5.5 6.2
11
2 )
2
)
2
)
2 )
2 ) with power-
2
)
2 )
VIESMANN
51