Preparing For Installation; Product Information - Viessmann Vitocal 300-G Installation And Service Instructions For Contractors

Preparing for installation

Product information

Vitocal 300-G, Type BW
Brine/water heat pump with electronic heat pump control unit Vitotronic 200,
type WO1A
The refrigerant circuit has an electronic expansion valve (EEV) with an independent
control circuit.
The heat pump control unit can activate and control a heating circuit provided on site
for cooling or a separate cooling circuit.
All sensors are fitted inside sensor wells.
For central and DHW heating, an instantaneous heating water heater (on site) can
also be controlled.
The output can be extended in conjunction with heat pump stage 2 (Vitocal 300-G,
type BWS).
Vitocal 300-G, Type WW
The brine/water heat pump type BW with a conversion kit for the primary side
becomes water/water heat pump type WW. For type WW, a separate well circuit
provides the primary circuit with heating energy via a separating heat exchanger
(accessory). The well circuit is also controlled by heat pump control unit
Vitotronic 200, type WO1A.
Vitocal 300-G, Type BWS
The Vitocal 300-G type BWS is used to extend the output (stage 2) of heat pumps
type BW and WW (stage 1).
Heat pump stage 2 (type BWS) can be used both for heating operation and DHW
heating. Accordingly, a second secondary pump or circulation pump for cylinder
heating (on the heating water side) is required.
Heat pump stage 2 (type BWS) does not have its own heat pump control unit and is
controlled by the heat pump control unit Vitotronic 200, type WO1A of the heat pump
stage 1 (type BW, WW).
Heat pump stage 2 (type BWS) has its own refrigerant circuit. This means a separate
power supply is required for every compressor.
With the two-stage version, either a primary pump can be used for every heat pump,
or a common primary pump can be used. Independently, a collective flow and return
temperature sensor is used on the primary side at the common flow and return.
Heat pump stage 2 (type BWS) must be installed to the left of the heat pump stage
1 (type BW, WW).
The hydraulic connection between the two heat pumps is carried out on site.
An instantaneous heating water heater (on site) can only be controlled by heat pump
stage 1 (type BW, WW).
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