Minimum Clearances; Min. Space Requirement; Electrical Connections - Viessmann VITOCAL 300-G Technical Manual

Design information
– Always make hydraulic heat pump connections flexible and stress-
free (e.g. by using Viessmann heat pump accessories).
– Apply anti-vibration fixings to pipework and installations.
– To prevent condensation, thermally insulate lines and components
in the primary circuit with vapour diffusion-proof materials.

Minimum clearances

Note
■ Additional strain relief clamps are required for the power cables if the
clearance behind the heat pump is more than 80 mm.
■ Observe clearances required for installation and maintenance
A
≥ 400 ≥ 400
Type BW, WW
A Clearance depends on on-site installation and location

Min. space requirement

According to DIN EN 378 the minimum volume for the installation room
depends on the amount and the consistency of the refrigerant.
m
max
V
=
min
G
V
Minimum room volume in m
min
m max. amount of refrigerant in kg
max
G Practical limit in accordance with DIN EN 378, subject to the
refrigerant constituency
Refrigerant
Practical limit in kg/m
R 407 C
R 410 A
R 134 A
Taking into account the refrigerant used and the fill volume, the
following minimum room volumes result:
Rated heating output
21.2 kW
28.8 kW
42.8 kW

Electrical connections

■ 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.
VITOCAL 300-G
(cont.)
3
3
Min. space requirement
3
15 m
17 m 3
3
23 m
≥ 400
Type BW/BWS, WW, type BWS (stage 2) is always positioned to the
left of type BW, WW (stage 1)
A Clearance depends on on-site installation and location
Note
If several heat pumps are to be installed in one room, add the minimum
room volumes of the individual appliances together.
0.31
0.44
0.25
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.
A
≥ 400
= 300
VIESMANN
3
23