Product Information - Viessmann Vitocal 300-G Series 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

Type BW 301.A
Structure
Vitocal 300-G, type BW 301.A are brine/water heat
pumps for central heating, room cooling and DHW
heating in mono mode or mono energetic systems.
The refrigerant circuit has an electronic expansion
valve (EEV) with an independent control circuit (refrig-
erant circuit controller).
For central heating and DHW heating, an instantane-
ous heating water heater (on site) can also be control-
led.
Output extension
The output of type BW 301.A can be supplemented
with a heat pump stage 2 (type BWS 301.A).
Hydraulics
For type BW 301.A, high efficiency circulation pumps
for the primary and secondary circuits and a high effi-
ciency circulation pump for DHW heating are available
as accessories.
Conversion to water/water heat pump
The Vitocal 300-G brine/water heat pump, type BW
301.A, becomes a water/water heat pump in conjunc-
tion with the conversion kit (accessories). A separate
well circuit provides the primary circuit with heating
energy via a separating heat exchanger (accessories).
The components of the well circuit and primary circuit
are controlled by the heat pump control unit.
Type BWS 301.A (heat pump stage 2)
Heat pump stage 2 is used to extend the output of type
BW 301.A (heat pump stage 1).
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 heating
The heat pump can supply up to 3 heating circuits –
1 heating circuit without and 2 heating circuits with
mixer. The mixer extension kit (accessories) is
required to control the mixer for the second heating cir-
cuit with mixer.
Room cooling
Rooms can be cooled either via 1 heating/cooling cir-
cuit or 1 separate cooling circuit. Hydraulic compo-
nents need to be provided on site for this purpose.
Heat pump control unit
The entire system is monitored and controlled by the
integral Vitotronic 200 heat pump control unit,
type WO1C.
Note
Heat pump stage 2 must be installed to the left of heat
pump stage 1.
Information
7