OTG 30-100

Pressurised electric water heaters
  • Volumes: 120 and 150 l.
  • Vertical wall mounting.
  • Original angular shape.
  • Tank made of high quality steel sheet, enamel coated at 850°C.
  • Mg anode for additional anti-corrosion protection of the tank.
  • High quality insulation assures lower heat loss.
  • Electric immersion heating element.
  • Arbitrary water temperature setting of up to 75°C.
  • Bimetal thermometer.
  • Indicator of electric heating element operation.
  • Temperature setting options:
    • economical temperature
    • protection against freezing.
  • Simple installation and maintenance.

Electric immersion heating element

The immersion heater is in direct contact with water. It is made of copper, providing high corrosion resistance and long life. The Mg anode additionally protects the enamelled tank against corrosion.

Properties

MODEL OTG 30 OTG 50 OTG 80 OTG 100 OTG 120 OTG 150 OTG 200
Volume [l] 30 50 80 100 120 150 200
Purpose              
One or more outlets • • • • • • •
Vertical wall mounting • • • • • • •
Number of persons - average consumption 1 2 3 - 4 4 - 5 5 - 6 6 - 8 8 - 10
Dimensions of Connections              
A (mm) 510 610 830 975 1130 1345 1563
B (mm) 310 400 600 750 900 1100 110
C (mm) 235 240 260 255 260 275 493
Connections to the supply network G 1/2 G 1/2 G 1/2 G 1/2 G 1/2 G 1/2 G 1/2
Net / gross weight / with water (kg) 19/21/49 24/26/74 31/33/111 36/38/136 44/47/164 50/54/200 72/77/272
Technical Characteristics              
Working pressure [bar] 6 6 6 6 6 6 6
Enamelled steel tank • • • • • • •
Magnesium protective anode • • • • • • •
Continuous temperature selection to 75 °C • • • • • • •
Protection against freezing • • • • • • •
Heating element control lamp • • • • • • •
Thermometer • • • • • • •
Average thickness of insulation [mm] 20 - 60 20 - 60 20 - 60 20 - 60 40 - 85 40 - 85 25 - 70 
Degree of protection against humidity IP 24 IP 24 IP 24 IP 24 IP 24 IP 24 IP 24
Electrical Characteristics              
Rated power output [W] 2000 2000 2000 2000 2000 2000 2000
Voltage 230 V ~ • • • • • • •
Nominal current [A] 8,7 8,7 8,7 8,7 8,7 8,7 8,7
Functional Characteristics              
Heating time from 15 to 75 °C 1h 05min 1h 55min 3h 05min 3h 55min 4h 35min 5h 45min 7h 40min
Amount of available mixed water at 40 °C [l]¹ 54 96 151 199 238 296 394
Thermal losses [kWh/ 24 h]² 0.55 0.62 0.86 1.02 1.17 1.41 2.1
Connection Fittings              
Safety valve or safety group • • • • • • •
Reduction valve for pressure > 5 bar • • • • • • •
Transportation              
Packaging dimensions [mm] 575 x 600 x 620 575 x 600 x 720 575 x 600 x 940 575 x 600 x 1085 575 x 600 x 1240 575 x 600 x 1455 575 x 600 x 1673
No. of pieces per truck (120 m³) 416 416 312 208 208 208 104
(1) Values are valid for mixing water with temperature of 15 °C from the cold inlet with water at 65 °C from the heater (standard SIST EN 60379:2005).
(2) Measured at 20 °C ambient temperature, and 65 °C water temperature in the heater (standard SIST EN 60379:2005).