DHW cylinder with buffer

Premium REVERSE+ heat pump combination cylinder that can be used not only for domestic hot water heating but also for cooling and heating. The large heat exchanger surface of the twin coil is specially designed for heating and supplying domestic hot water in combination with heat pumps and solar systems. The additional buffer tank increases the volume of the heating circuit and thus prevents the heat pump from short‑cycling. The buffer section is thermally separated from the DHW section and can therefore be used independently for cooling or heating surface heating systems.
To protect the cylinder surface from condensate in cooling mode, the cylinder features a special, high‑quality anti‑corrosion coating. As cooling temperatures combined with higher ambient temperatures can lead to condensation, special protection of the system components involved is required. The high‑grade A⁺ insulation from OEG also ensures minimal temperature losses with these cylinders.

To supplement the heat pump heating system, an optional immersion heater can be operated both in the DHW cylinder and in the buffer tank below.

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OEG no.	516005660
Smooth tube heat exchanger:	1
Tank capacity [litres]:	203 | 100
Recommended for:	Heat pumps
Operating mode:	bivalent
Installation type:	Vertical storage tank
Manufacturer	OEG
Brand	Reverse+
Energy efficiency class	A+
ErP-Label
Notes	Delivery by forwarding agency with highly efficient ThermoVac® vacuum insulation Ideal for heat and cold storage High Quality 36 months warranty
Customs tariff number	84191900

General

Colour:	silver
Insulation according to DIN 4102-1 Fire Protection Class B2:	solid foamed insulation
Weight [kg]:	125
Total height including insulation [mm]:	1235
Diameter with insulation [mm]:	760
Tilt height [mm]:	1460

Energy

Energy efficiency class according to EU regulation no. 812/2013:	A+
Heat retaining loss according to EN 12897 [W]:	36
Heat losses in stand-by mode according to DIN 12897 [kW/h / 24 h]:	0,864
Output capacity (45°C) [l]:	259
Performance indicator NL following DIN 4708:	5

Tank

Real volume according to EN 12897 [l]:	303
pmax Tank [bar]:	3
tmax Tank [°C]:	95
tmin Tank [°C]:	10
tmax Ambient air [°C]:	30
Max. rel. air humidity [%]:	80
Buffet storage tank capacity (part of the actual capacity) [l]:	100

Domestic hot water tank (enamelled according to DIN 4753-3)

Domestic hot water tank volume (Part of the real volume) [l]:	203
pmax Domestic hot water tank [bar]:	10
tmax Domestic hot water tank [°C]:	95

Smooth-pipe heat exchanger

Smooth-pipe heat exchanger [number]:	1
Smooth-pipe heat exchanger area bottom [m²]:	1,20
Smooth-pipe heat exchanger volume bottom:	7,90
pmax Smooth-pipe heat exchanger [bar]:	10
tmax Smooth-pipe heat exchanger [°C]:	130

Connections

Connection layout:	180°
Connection sensor [Ø mm / terminal]:	6 mm
Connection cold / hot water:	R 1"
Connection heat generator [thread]:	R 1"
Connection heat exchanger [thread]:	Rp 1 1/2"
Connection circulation:	R 3/4"
Connection heating element [thread]:	Rp 1 1/2"
Service hatch (LK 150):	115 / 180
Max. immersion depth of flange heater [mm]:	490
Max. immersion depth of screw-in heater [mm]:	600