Drazice OKCV 180 Manuale di funzionamento e installazione - Pagina 3
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temperature is reached, heating interrupts automatically.
Water accumulated in the tank is then used for consumption. The tank keeps constant pressure of water from the water
main. If the combination faucet hot water valve is opened, water from the water supply conduit pressed out by cold
water pressure flows out of the heater. Hot water flows out through the top part, and water flowing in remains in the
bottom part of the heater. Pressure principle allows hot water withdrawal at any place from the heater (Fig. 1).
2.
MESSAGE FOR CUSTOMERS
Hot water consumption
Consumption of hot water in households depends on the number of people, amount of sanitary equipment, length,
diameter and insulation of piping in the flat, or on individual habits of users.
The cheapest option of water heating comes at the time when the electricity rate is reduced. Find out in what time
intervals your electricity supplier provides reduced tariff and, depending on that information, select relevant volume
and power input of the heater so that your hot water consumption covered the needs of your household.
Energy saving
Hot utility water reservoir is insulated by means of a top-quality polyurethane foam with zero CFCs content.
Adjust the temperature of the heater's thermostat to that level only that you need to run your home. Thus you will
reduce electricity consumption, as well as the amount of lime sediments on the walls of the receptacle and on the
electric element's pit.
Emergency power consumption
If no heated water is taken from the tank, a small amount of heat leaks. This loss is measured for a period of 24 hours
at the temperature of 65°C in the heater, and at 20°C in its ambient area. The resulting value is expressed in kWh/24h
and indicates the amount of power needed to maintain the set temperature.
Data sheet pursuant to Directive No 442/2004 and Appendix No 7
Heater types
OKCV 100 ;
OKCEV 100
OKCV 125 ;
OKCEV 125
OKCV 160 ;
OKCEV 160
OKCV 180 ;
OKCEV 180
OKCV 200 ;
OKCEV 200
3.
TECHNICAL DESCRIPTION
The heater tank is made of a steel plate and tested by 0.9 MPa overpressure. The heat exchanger is tested with
a pressure of 0.6 Mpa. The inside of the receptacle is enamelled. A flange is welded onto the bottom of the tank with a
flange lid screwed to it. A sealing ring is inserted between the flange lid and the flange.
Thermowells for placing a heating element and sensors of regulation thermostat and safety fuse are located in
the flange lid. Anode rod is mounted on M8 nut. The water reservoir is insulated by means of polyurethane foam.
Electric wiring is placed underneath the plastic removable cover. The temperature of water can be set using the
thermostat.
In combined versions, a heat exchanger is welded in the pressure tank. The heat exchanger is only intended
for the heating circuit.
Energy
Heat
Nominal
efficiency
losses
capacity (l)
class
Wh/24hr/l
C
8,8
C
8,7
C
8,7
C
7,7
B
7
3
Time of
content
consumption for
heating
heating of the
(hours)
contents from
15°C to 65°C in
100
3
125
3,8
152
5
180
5
200
5,5
Electricity
Heat losses
kWh/24hr
kWh
6
0,88
7,5
1,09
9,5
1,33
10,6
1,39
12
1,4