OKHE SMART

OKHE SMARTSmart water heater with electronic thermostat and the option of connection to HDO. It includes autodidactic algorithm and heats water if required. It is possible to switch to several modes (MANUAL, MANUAL HDO, OPTIMUM, PROG, SMART, ANTI FREEZE). The heater is controlled by means of the operating system Android/iOS.

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With an inner enamelled vessel

NADO 500, 750, 1000 v1

Character

Storage tanks NADO contains an inner enamelled vessel with volume from 100 up to 200 liters according to the dimension of the storage tank. In standard design the flange is closed. Storage tanks are delivered without insulation. The insulation is available on request.

Technical data

 

Type

NADO
500/140 v1
500/200 v1

NADO
750/140 v1
750/200 v1
NADO
1000/140 v1
1000/200 v1
Tank capacity [l] 475 772 999
Inner tank capacity [l] 140
210
140
210
140
210
Max. pressure in the tank [MPa] 0.3
Max. pressure in the inner tank [MPa] 0.6
Max. temperature of water in the tank [°C] 90
Max. temperature of water in the inner reservoir [°C] 90
Inner tank heat transfer surface [m2] 1,43
1,95
1,43
1,95 
1,43
1,95
40°C HW yield at 53°C water temperature in the tank inlet water 15°C/HW flow rate [l/(l/min)]  260/5
260/10
490/5
490/10
750/5
750/10
40°C HW yield at 80°C water temperature in the tank inlet water 15°C/HW flow rate [l/(l/min)] 650/5
650/10
1170/5
1170/10
1450/5
1450/10
Weight [kg] 113
127
137
151
152
166
Max. number x power of heating unit TPK 210-12 [number x kW] 1 x 12
Max. number x power of heating unit TJ 6/4" [number x kW]

1x9
-

Energy efficiency class B    
Static loss [W] 80 117 130

 HW - hot water

Type

NADO 500/300 v1

NADO 750/250 v1
Tank capacity [l] 475 772
Inner tank capacity [l] 279 260
Max. pressure in the tank [MPa] 0.3
Max. pressure in the inner tank [MPa] 0.6
Max. temperature of water in the tank [°C] 90
Max. temperature of water in the inner reservoir [°C] 90
Inner tank heat transfer surface [m2] 2,58 2,15
40°C HW yield at 53°C water temperature in the tank inlet water 15°C/HW flow rate [l/(l/min)] 260/10 490/10
40°C HW yield at 80°C water temperature in the tank inlet water 15°C/HW flow rate [l/(l/min)] 650/10 1170/10
Weight [kg] 153 180
Max. number x power of heating unit TJ 6/4" [number x kW] 1 x 9 (2 x 4,5) 3 x 9
Energy efficiency class B  

Static loss [W]

80 117

  

    NADO 500/100 v1                NADO 750/250 v1

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NADO 500, 750, 1000 v2

Character

Storage tanks NADO are produced with a flange with spacing of screws 210 mm for assembly with a heating flange TPK. The tank contains an exchanger with heating surface 1.5 m2 for connection to another heating system (for example SOLAR). The tank contains an inner enamelled vessel of 140 liters volume, according to dimension of the storage tank. Placement and quantity of sockets can be changed in dependence on an order. In the standard design the flange is closed. Storage tanks are delivered without insulation. The insulation is available on request.

Technical data

TypeNADO
500/140 v2
NADO
750/140 v2
NADO
1000/140 v2
Tank capacity [l] 475 772 999
Inner tank capacity [l] 140 140 140
Max. pressure in the tank [MPa] 0.3
Max. pressure in the exchanger [MPa] 1
Max. pressure in the inner tank [MPa] 0.6
Max. temperature of water in the tank [°C] 90
Max. temperature of water in the exchanger [°C] 110
Max. temperature of water in the inner reservoir [°C] 90

Inner tank heat transfer surface [m2]

1.43
Exchanger heat transfer surface [m2] 1.5
Exchanger capacity [l] 10.5
40°C HW yield at 53°C water temperature in the tank inlet water 15°C/HW flow rate [l/(l/min)] 260/5

490/5

750/5
40°C HW yield at 80°C water temperature in the tank inlet water 15°C/HW flow rate [l/(l/min)] 650/5 1170/5 1450/5
Weight (without water and insulation) [kg] 143 168 180
Max. number x power of heating unit TPK 210-12 [number x kW] 1x6 1x12 1x12
Max. number x power of heating unit TJ 6/4" [number x kW] 1x9 1x9 1x9
Energy efficiency class B    
Static loss [W] 79 116 128

    

                                              NADO 500/100 v2               NADO 500/140 v2

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NADO 500, 750, 1000 v3

Character

Storage tanks NADO are produced with flange with spacing of screws 210 mm for assembly with heating flange TPK. The tank contains exchanger with heating surface 1.5 m2 for connection to another heating system (for example SOLAR). The tank contains inner enamelled vessel with volume of 92 liters. The placement and quantity of the sockets can be changed in dependence on the order. In the standard design the flange is closed. Storage tanks are delivered without insulation. The insulation is available on request.

Technical data

TypeNADO 500/100 v3NADO 750/100 v3NADO 1000/100 v3
Tank capacity [l] 475 772 999
Inner tank capacity [l] 92 92 92
Max. pressure in the tank [MPa] 0.3
Max. pressure in the exchanger [MPa] 1
Max. pressure in the inner tank [MPa] 0.6
Max. temperature of water in the tank [°C] 90
Max. temperature of water in the exchanger [°C] 110
Max. temperature of water in the inner reservoir [°C] 90
Inner tank heat transfer surface [m2] 1.25
Exchanger heat transfer surface (upper/lower) [m2] 1.5/1.5

Exchanger capacity (upper/lower) [l] 10.5/10.5
40°C HW yield at 53°C water temperature in the tank inlet water 15°C/HW flow rate [l/(l/min)] 260/5 490/5

750/5

40°C HW yield at 80°C water temperature in the tank inlet water 15°C/HW flow rate [l/(l/min)] 650/5 1170/5 1450/5
Weight (without water and insulation)[kg] 168 187 202
Max. number x power of heating unit TPK 210-12 [number x kW]

1x6

1x12 1x12
Energy efficiency class B    
Static loss [W] 80 117 130

          NADO v3

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NADO 300, 500, 750, 1000 v6

Character

NADO v6 accumulation tanks are produced with two G 6/4" funnels to assemble a screw-in heating unit TJ with an extended cooling unit of 2×6 kW maximum power output. The tank contains a tubular steel exchanger of 1.6, 2.2 or 3.3 m2 surface to connect an additional heating system (e.g. SOLAR). The tubular steel exchanger placed in lower part of the tank cannot be used for flow heating of hot water. The tank contains a submerged stainless steel exchanger for preparation of hot water of 20, 25, 35 or 45 litre capacity, depending on the size of accumulation tank. Upon customer's request, the distribution of funnels and their quantity can be modified. Accumulation tanks are supplied without insulation. The insulation is available on request.

Technical data

TypeNADO 300/20 v6
(with insulation)
NADO 500/25 v6NADO 750/35 v6NADO 1000/45 v6
Tank capacity [l] 320 475  772 999
Inner tank capacity [l] 20 23  32 37
Max. pressure in the tank [MPa] 0.3
Max. pressure in the exchanger [MPa] 1
Max. pressure in the stainless exchanger [MPa] 0.6
Max. temperature of water in the tank [°C] 90
Max. temperature of water in the exchanger [°C] 110
Max. temperature of water in the inner reservoir [°C] 90
Heating surface of the stainless steel exchanger [m2] 4.5 6.25  8.5 10 
Heating surface of the exchanger (down) [m2] 1.6 2.2  2.2 3.3 
40°C HW yield at 53°C water temperature in the tank inlet water 15°C/HW flow rate [l/(l/min)] 210/10 260/10 490/10 750/10
40°C HW yield at 80°C water temperature in the tank inlet water 15°C/HW flow rate [l/(l/min)] 520/10 650/10 1170/10 1450/10
Max. number x power of heating unit TJ 6/4" with extended cooling section [number x kW] 2x4,5 2x6  2x6 2x6 
Weight (without water and insulation) [kg] 106 134  165 197
Energy efficiency class C C    
Static loss [W] 80 91 114 148

       

                NADO 300/20 v6                                                                NADO 500/20 v6

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NADO 500, 750, 1000 v7

Character

NADO accumulation tanks are produced with two G 6/4" funnels (it does not apply to the 500 litre capacity) to assemble a screw-in heating unit TJ with an extended cooling unit of 2×6 kW maximum power output. The tank contains an exchanger of 2.5 or 3.3 m2 surface to connect an additional heating system (e.g. SOLAR).  The tubular steel exchanger placed in lower part of the tank cannot be used for flow heating of hot water. The tank contains an inner enamelled accumulator of 200 litre capacity. Upon customer's request, the distribution of funnels and their quantity can be modified. Accumulation tanks are supplied without insulation. The insulation is available on request. The NADO 500/200 v7 accumulation tank cannot be equipped with heating with electrical elements.

Technical data

TypeNADO 500/200 v7NADO 750/200 v7NADO 1000/200 v7
Tank capacity [l] 475 772 999
Inner tank capacity [l] 233 233 233
Max. pressure in the tank [MPa] 0.3
Max. pressure in the exchanger [MPa] 1
Max. pressure in the inner tank [MPa] 0.6
Heating surface of the inner tank [m2] 2.29
Heating surface of the exchanger [m2] 2,5 3,3 3,3
Exchanger capacity [l] 18 25 25
Max. temperature of water in the tank [°C] 90
Max. temperature of water in the exchanger [°C] 110
Max. temperature of water in the inner reservoir [°C] 90
40°C HW yield at 53°C water temperature in the tank inlet water 15°C/HW flow rate [l/(l/min)] 260/10 490/10 750/10
40°C HW yield at 80°C water temperature in the tank inlet water 15°C/HW flow rate [l/(l/min)] 650/10 1170/10 1450/10
Max. number x power of heating unit TJ 6/4" with extended cooling section [number x kW] - 2x6 2x6
Weight (without water and insulation) [kg] 175 212 243
Energy efficiency class B    
Static loss [W] 76 113 126

 

                              NADO 500/200 v7

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NADO 800/35 v9, NADO 1000/35 v9

Character

Tanks are produced in 800 and 1000-litre volumes. Tanks and tubular heat exchangers are made of steel, without the inner surface treatment, the outer surface of the tank is provided with a protective paint. Individual versions are equipped with a tubular exchanger and a submersed stainless exchanger of 35 litre volumes, and two funnels G 1/½“ mm, with the possibility to install an electric heating element of TJ 6/4" series. The storage tanks are delivered without insulation. The insulation is available on request.

Technical data

TypeNADO 800/35 v9NADO 1000/35 v9
Tank capacity [l] 820 999
Volume of the stainless steel exchanger [l] 32 32
Exchanger capacity (upper/lower) [l] 18/25 25/25
Weight (without water and insulation) [kg] 224 275
Heating surface of the stainless steel exchanger [m2] 8.5
Heating surface of the upper/lower exchanger [m2] 2.2/3.3 3.3/3.3
Max. pressure in the tank  [MPa] 0.3
Max. pressure in the stainless steel exchanger  [MPa] 0.6
Max. pressure in the lower/upper exchanger [MPa] 1
Max. temperature of water in the tank [°C] 90
Max. temperature of water in the exchanger [°C] 90
Max. temperature of water in the heating exchanger [°C] 110
40°C HW yield at 53°C water temperature in the tank inlet water 15°C/HW flow rate [l/(l/min)] 620/10 750/10
40°C HW yield at 80°C water temperature in the tank inlet water 15°C/HW flow rate [l/(l/min)] 1287/10 1450/10
Max. number x power of heating unit TJ 6/4" with extended cooling section [number x kW] 2 x 6
Static loss [W] 118 138

 

                              NADO 800/35 v9

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Photogallery

NADO 300/60
NADO 500/300