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Device description
1 Magnesium anode
2 Air vent valve
3 Electric auxiliary heater
4 Safety valve
5 3-way switching module
6 Electrical connection
7 Cable entries
8 Maintenance flange
9 Drain stopcock for DHW tank
10 Buffer tank
11 Fill and drain stopcock for heating water
12 Buffer charging pump
13 Heating circuit pump
14 DHW tank
15 Condenser (plate heat exchanger)
16 High limit safety cut-out
17 Air vent valve
The buffer tank and the DHW tank with heat exchanger
are arranged on top of each other and can be separated
for handling.
00_200_202_08_02_002-EN | www.ochsner.com
The appliance is fitted with a plastic foam outer casing and
a removable front panel.
All hydraulic connections are at the top.
Condenser:
The condenser takes the form of a plate heat exchanger.
The plate heat exchanger is built of stainless steel and
insulated on all sides against condensation and heat loss.
DHW tank
The steel tank is fitted internally with a special direct enam-
el and a sacrificial anode. The anti-corrosion anode with
wear indicator protects the inside of the tank against cor-
rosion.
The heating water heated by the heat pump is pumped
through an internal indirect coil into the DHW tank. The in-
ternal indirect coil transfers the absorbed heat to the DHW.
Buffer tank
The steel tank serves to hydraulically separate the flow
rates of the heat pump and the heating circuit. The heating
water heated by the heat pump is transported to the buffer
tank by the buffer charging pump. When there is a demand,
the heating water is supplied to the heating circuit by the
integral heating circulation pump.
Multifunctional assembly (MFA)
The multifunctional assembly switches between heating
circuit and DHW circuit. It includes the following compo-
nents:
- High limit safety cut-out
- Air vent valve
- Flow meter
- System pressure sensor
- Electric auxiliary heater
Note
At low outdoor temperatures, the appliance oper-
ates in bivalent-parallel mode.
4.3.2
Outdoor unit
The outdoor unit is intended to be installed outside. The
outdoor unit is designed as a split evaporator. The indoor
unit is connected to the outdoor unit with refrigerant lines,
along with electrical control and power supply cables.
Evaporator:
The evaporator is part of the outdoor unit and consists of
copper pipes in a set of aluminium fins.
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