Product Information - Viessmann Vitocal 300-A Installation And Service Instructions Manual

Intended use
(cont.)
The range of functions can be extended with additional
components and accessories.
Intended use presupposes that a fixed installation in
conjunction with permissible, system-specific compo-
nents has been carried out.
Commercial or industrial usage for a purpose other
than central heating/cooling or DHW heating shall be
deemed inappropriate.

Product information

Layout
Vitocal 300-A is an output-dependent control air/water
heat pump for siting outside a building.
The integral radial fan sucks the outdoor air from all
sides through the circular evaporator via the air intake
grille in the central area of the heat pump. The chilled
air leaves the heat pump through the air discharge
grille near ground level. This air routing concept allows
the system to operate quietly.
The refrigerant circuit operates using steam injection
and has 2 separately controlled electronic expansion
valves. Flow temperatures of up to 65 °C are possible.
Output control
The requested compressor output is controlled via a
DC inverter.
Hydraulics
The heat pump has one connection each for heating
water flow and return. The heating water enters the
building via hydraulic connection lines. These lines are
routed below ground and are frost-proof.
In the secondary circuit, the following components can
be installed in the building:
1 high efficiency circulation pump for DHW heating
■
and 1 high efficiency circulation pump for central
heating
or
■ 1 high efficiency circulation pump and the 3-way
diverter valve for "central heating/DHW heating"
Central heating
The heat pump is able to supply up to 3 heating cir-
cuits: 1 heating circuit without and 2 heating circuits
with mixer. The mixer extension kit (accessories) is
required to control the mixer for the 2nd heating circuit
with mixer.
Incorrect usage or operation of the appliance (e.g. the
appliance being opened by the system user) is prohibi-
ted and will result in an exclusion of liability. Incorrect
usage also occurs if the components in the heating
system are modified from their intended function.
Note
The appliance is intended exclusively for domestic or
semi-domestic use, i.e. even users who have not had
any instruction are able to operate the appliance
safely.
Central cooling
Central cooling results either through a heating/cooling
circuit or via a separate cooling circuit. For this, the
refrigerant circuit is reversed and heat is extracted
from the cooling circuit.
Heat pump control unit
The entire heating system is monitored and controlled
by the heat pump controller Vitotronic 200,
type WO1C.
The heat pump controller is installed on a wall inside
the building and connected electrically with the heat
pump.
Information
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