pumps and pumping systems  

RETRO cooker


"RETRO" coal-burning cookers are designed for boiling, frying and baking. The cookers are equipped with an oven, stationary grate, air flow to grate controller and flue gas circulation handle. A furnace, ash pit and oven doors are located in the cooker front wall. The oven has a protective insulation to ensure uniform interior heating and is equipped with a sheet-metal baking tray.

RETRO coal-burning cookers are used in:

  • households,
  • detached houses,
  • holiday cottages.

Technical specifications:

Cooker mass 150 kg ± 10%
Distance from floor to the middle of combustion gas outlet 750 mm
Outlet diameter 130 mm
Chimney draught 10 Pa
Cooking efficiency >= 25%
Thermal efficiency >= 70%
Thermal capacity >= 7900W what correspond to burning of 1,6 kg of carbon with 25 500 kJ/kg calorific value per hour

Cooker dimensions
height 860 mm
width 900 mm
depth 630 mm
Oven doors dimensions
height 230 mm
width 302 mm
depth 440 mm

RETRO cooker design

The furnace and flue gas circulation channels are lined with chamotte bricks and insulating plates. Depending upon the location of the flue gas outlet hole, so called left (L) and right (P). Depending upon his needs, the customer uses the standard execution (with back wall hole) or changes the flue gas direction himself by exchanging the flue gas outlet sheet (back, side) position and changing the pipe cap location. The cookers can also be equipped with heating insert located in the furnace chamber. At normal (10 Pa) chimney draught and burning rated coal amount of 1.6 kg/h the insert performance is as follows:

  • thermal efficiency > 20%,
  • thermal capacity > 2 200 W.

Appropriate cooker connection with a water heater enables warm water generation in amounts sufficient for one family with simultaneous cooking or baking in the oven as well as kitchen room heating. The connection of a central heating heater ensures heating for a >15 m3 room (e.g. bathroom) but at the expense of smaller amounts of warm water.

Schematic diagram of utility warm water and central heating system

- with cooker as heat source

NWZ – open expansion vessel
PCWU – PCWU type water heater with electrical heater (optional)
ZB – safety valve
Z – cut-off valve
ZZ – non-return valve
K – drain cock (valve)
RB – safety tube
RW – expansion tube
RO – vent tube
RP – overflow pipe
PE – hose
Z1 – heating water cycle fill valve
O25 (1") – pipe nominal diameter – mm (inch)

Hydro-Vacuum S.A.
ul. Droga Jeziorna 8
86-303 Grudziądz
tel. 56 45 07 415
fax. 56 46 25 955
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