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SKU ra/90.05.0801

Ratiotherm Oscar 08 - Buffer PV Ready

Made to Order - Contact us for lead time / price  01985 850 982

The Ratiotherm Oscar 08 is compatible with compact wall-mounted oil and gas condensing boiler systems, heat pumps, automatic pellet boilers, and other heat generators up to 15 kW. Additionally, it can optimize the efficiency of a solar system. Available in 500 L, 750 L, and 1000 L sizes, the Oscar 08 is designed with a sleek and compact appearance. Its Plug'n'Play installation allows for quick and easy setup, with the hydraulic system and control unit easily connected to the stratified storage tank's eight foot area connections. Simply hook in the controller and connect the coded plugs to the panel - installation complete.



Ratiotherm Oscar 08 - Buffer PV Ready Stratified storage tank

Available Models 

  • Oskar° 08/500 Lt Buffer + Hydraulic module (ra/90.05.080)
  • Oskar° 08/ 750 Lt Buffer + Hydraulic module (ra/90.07.0801)
  • Oskar° 08/ 1000 Lt Buffer + Hydraulic module (ra/90.10.0801)

 Contact us for lead time / price  01985 850 982


Each System Includes 

  • Layered storage tank Oskar°-08/1.5/500 with class “C” standard insulation (ra/28.05.0500) For (ra/90.05.080)
  • Layered storage tank Oskar°-08/1.5/750 with class “C” standard insulation (ra/28.07.0500) for (ra/90.07.0801)
  • Layered storage tank Oskar°-08/1.5/1000 with class “C” standard insulation (ra/28.10.0500) for (ra/90.10.0801)

 1 x Layered storage tank

ratiotherm Stratified storage tank Oskar° 08

  • Insulation in separate packaging for on-site assembly
  • Pressure vessel layered storage tank made of steel with WPS layered insert SE 1.5
  • Surfaces: raw on the inside, anti-rust primer on the outside
  • 8 system connections at the bottom horizontally at the front
  • 2 T-pieces on the left and right for connecting the drain fitting
  • Ventilation and fastening connection at the top
  • Installation socket for immersion tube bundles - Sensor immersion tube bundles made of stainless steel with 5 immersion tubes
  • Patented heat pump layer insert made of heat-resistant polypropylene plastic (up to 105°C)
  • Acceptance by factory experts according to test group V

1 x Hydraulic module

ratiotherm Hydraulic module for buffer

  • Insulated sheet metal housing with 2 hinged doors & cover, including controller holder, transport handles & adjustable feet
  • Accumulator loading hydraulics, top flow, middle flow, middle return, bottom return, solar flow and return
  • Connections for heat generators, either on the left and/or right side
  • 5 x ball valves with 1" RIG, 2 plugs and 3 drains for side connections
  • 1 x storage drain and expansion tank fitting
  • 1 drinking water station TWST 70 kW-CU with heat exchanger, PWM high-efficiency pump - without pre-control valve
  • 1 heating circuit with electric. Mixer and electronically controlled high-efficiency pump
  • Connections for optional 2nd heating circuit
  • Connections for optional solar station
  • Connections for optional active or passive cooling
  • 8 shut-off corner ball valves to the storage
  • 2 shut-off and maintenance ball valves (HK1) with flow and return thermometers

1 x Central control unit with standard programming (special programming not possible!)

  • Controller console with plug-in devices (plug & play) for all inputs and outputs, factory-wired
  • Central controller rZR 16x2 (slide-in controller) with standard programming for:
  • 1 heat generator each automatic & manual; 2 heating circuits; 1 drinking water station; WW circulation; 1 solar station;
  • 1 additional second automatic heat generator, the additional module ra/95.10.3345 is required!

Optional accessories for Oskar°-08

  • Drinking water circulation pump set TWZP ra/28.90.5301-1

  • Second regulated heating circuit (expansion kit) ra/28.90.3502
    1 electronic mixer, 1 high efficiency pump
    1 pipe set with shut-off valves, 1 each flow and return thermometer
    1 contact sensor for VL temperature, 1 pump cable set 230V

  • Solar-Station SST 6-16 (Erweiterungssatz) ra/28.90.6016-1
    for connecting collectors in low-flow systems up to 16m²
    - including filling and rinsing device, safety fitting and EVS DN10
    - as well as all necessary sensors

  • Switching module for modulating heat generators left or right ra/28.90.0001
  • Switching module for passive cooling (only via HK1) ra/28.90.0005
  • Switching module for active cooling (only via HK1) ra/28.90.0007

  • Pre-control valve for TWS 70 (calcification protection) ra/28.90.5701
    1 temperature controller with immersion sensor - 2 M (M30 x 1.5)
    Control range 50 to 80°C, 1 exchange tube
    Recommendation when using solar thermal energy and high-temperature WE

  • C.M.I. in pluggable circuit board version for rZR 16x2 ra/28.10.3219
    for convenient online system monitoring/remote setting
    installed, configured and wired at the factory

  • Additional module UVR 610 without display in plastic housing ra/28.10.3305-1
    for optional 2nd automatic heat generator
    (is already pre-programmed in the controller standard program)
    installed, configured and wired at the factory

Hydraulic module for Oskar°-08

Hydraulic module for Oskar°-08