OTG OR

Pressurised electric water heaters

Mechanical controls of the conventional OTG water heaters have been replaced with a modern electronic control unit. Modern control unit with LED indicators and water temperature display unit additionally highlight the already modern and visually appealing design with rounded corners, placing these heaters at the higher end of the market.

ADVANTAGES:

  • Supply of several outlets
  • Vertical wall mounting
  • High-quality insulation for lower heat losses
  • Electric immersion heating element
  • Electronic control unit
  • Heater on/off and temperature adjustment key
  • Temperature adjustable from 10 °C to 75 °C
  • 7 LED temperature indicator
  • Dry firing protection
  • Overheating protection
  • Anti-Legionella function
  • Heating element operation indicator
  • Error/fault indicator
  • Working pressure 6 to 9 bar
  • Anti-corrosion tank protection with enamel and a magnesium anode
  • Available volumes/capacities: 30 l, 50 l, 80 l, 100 l, 120 l, 150 l

Properties

MODEL OTG 30 OR OTG 50 OR OTG 80 OR OTG 100 OR OTG 120 OR OTG 150 OR
Declared load profile S M M L L XL
Energy efficiency class (1) B C C C C C
Energy efficiency ƞwh (1) (%) 35,1 36,5 36,6 38,1 37,1 38,1
AEC annual electricity consumption (1) (kWh) 525 1405 1404 2687 2762 4399
Daily electricity consumption Qelec (2) (kWh) 2,480 6,563 6,560 12,410 13,850 20,322
Thermostat temperature settings "eco" "eco" "eco" "eco" "eco" "eco"
Specific precautions (assembly, install, maintain) When connected as pressurised, use of safety valve is mandatory When connected as pressurised, use of safety valve is mandatory When connected as pressurised, use of safety valve is mandatory When connected as pressurised, use of safety valve is mandatory When connected as pressurised, use of safety valve is mandatory When connected as pressurised, use of safety valve is mandatory
Value of smart 0 0 0 0 0 0
Storage volume V (l) 29,1 49,1 78,8 98,1 118,9 147,1
Mixed water at 40°C V40 (2) (l) 68 121 142 177 218  
PURPOSE            
One or more outlets + + + + + +
Vertical wall mounting + + + + + +
DIMENSIONS OF CONNECTIONS            
Height (mm) 510 610 830 975 1130 1345
Width (mm) 500 500 500 500 500 500
Depth (mm) 512 512 512 512 512 512
Connections to the supply network G 1/2 G 1/2 G 1/2 G 1/2 G 1/2 G 1/2
Net/gross weight/with water (kg) 21/24/51 28/31/78 34/37/114 39/42/139 44/47/164 50/54/200
TECHNICAL CHARACTERISTICS            
Working pressure (Mpa(bar)) 0,6(6)/0,9(9) 0,6(6)/0,9(9) 0,6(6)/0,9(9) 0,6(6)/0,9(9) 0,6(6)/0,9(9) 0,6(6)/0,9(9)
Enamelled steel tank + + + + + +
Protective magnesium anode + + + + + +
Electronic control unit + + + + + +
On/Off key + + + + + +
Temperature range adjustment up to 75 °C + + + + + +
LED thermometer + + + + + +
Overheating protection + + + + + +
Dry fire protection + + + + + +
Setting to “freeze prevention” + + + + + +
Indication of heating element operation + + + + + +
Indication of thermostat failure + + + + + +
Indication of over heating + + + + + +
Degree of protection IP 24 IP 24 IP 24 IP 24 IP 24 IP 24
ELECTRICAL CONNECTIONS            
Rated power output (W) 2000 2000 2000 2000 2000 2000
Voltage 230 V ~ + + + + + +
Nominal current (A) 8,7 8,7 8,7 8,7 8,7 8,7
FUNCTIONAL CHARACTERISTICS            
Thermal losses at 65°C (3) (kWh/24) 0,55 0,62 0,86 1,02 1,17 1,41
Heating time from 10 to 65°C 0h 59min 1h 38min 2h 37min 3h 16min 3h 55min 4h 54min
TRASNPORTATION DATA            
Packaging dimensions (mm) 575x600x620 575x600x720 575x600x940 575x600x1085 575x600x1240 575x600x1455
(1) EU Regulation 812/2013; EN 50440
(2) EN 50440
(3) Measured at 20°C ambient temperatur e and 65°C water temperatur e in the heater (SIST EN 60379:2005 standar d).
MODEL OTG 30 OR OTG 50 OR OTG 80 OR OTG 100 OR OTG 120 OR OTG 150 OR
A (mm) 510 610 830 975 1130 1345
B (mm) 310 400 600 750 900 1100
C (mm) 235 240 260 255 260 275
D (mm) - - - - - -
E (mm) 100 100 100 100 100 100
F (mm) 100 100 100 100 100 100
G (mm) 350 350 350 350 350 350