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CAREFULLY READ THIS MANUAL BEFORE INSTALLING THE WATER HEATER! 

 

Dear Customer,

 

 

The Works Cooperative of Dražice

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Machine Plant, Ltd., would like 

to  thank  you  for  your  decision  to  use  a  product  of  our  brand.

 

With  this  guide,  we  will  introduce  you  to  the  use,  construction, 
maintenance and other information on electrical water heaters.

 

 

The product is not intended to

 

be controlled by

 

a)

 

people (including children) with reduced physical, sensual or mental capacities, or

 

b)

 

people  with  insufficient  knowledge  and  experiences  unless  supervised  by  responsible  person,

 

or unless properly instructed by such responsible person.

 

 

The

 

manufacturer reserves the right for engineering modification of the product. The product is designed

 

for permanent contact with drinkable water.

 

 

It is recommended to use the product in indoor environment with air temperatures from +2°C to +45°C

 

and a relative humidity up to 80%.

 

 

Product’s reliability and safety is proven by tests implemented by the Engineering Test Institute in Brno.

 

 

Made in the Czech Republic.

 

 
 
 
 

Meaning of pictograms used in the Manual 

 
 
Important information for heater users. 
 
 
 
Abiding by the recommendations of the manufacturer serves to ensure trouble-free operation 
and the long service life of the product. 
 
 
 
Caution!  
Important notice to be observed. 
 

 

 

Содержание OKHE ONE20

Страница 1: ...WATER HEATER FOR VERTICAL MOUNTING Electric water heaters OKHE ONE20 Dru stevn z vody Dra ice stroj rna s r o Works Cooperative Dra ice Machine Plant Ltd Dra ice 69 294 71 Ben tky nad Jizerou tel 420...

Страница 2: ...FIXTURES 8 2 4 ELECTRICAL INSTALLATION 10 2 4 1 GENERAL INFORMATION FOR ELECTRICAL INSTALLATION 10 2 5 OPERATION 10 2 6 FIRST COMMISSIONING 11 2 7 PUTTING OUT OF SERVICE EMPTYING 11 2 8 INSPECTION MAI...

Страница 3: ...onsible person or unless properly instructed by such responsible person The manufacturer reserves the right for engineering modification of the product The product is designed for permanent contact wi...

Страница 4: ...umption 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 optio...

Страница 5: ...44 MAX OPERATING TEMPERATURE OF HOT WATER HW C 80 RECOMMENDED HOT WATER HW TEMPERATURE C 60 HEIGHT OF THE HEATER mm 591 SIZE OF THE HEATER width x depth mm 523x301 MAX WEIGHT OF THE HEATER WITHOUT WA...

Страница 6: ...with a quality polyurethane insulation that ensures minimum heat losses Wiring is installed in the bottom part of the heater Water temperature may be set by a thermostat in the range from 5 C to 74 C...

Страница 7: ...k the bearing capacity of the wall and the material it is made of considering the weight of the heater filled with water Depending on the wall material choose adequate fixtures Should you have any dou...

Страница 8: ...h a check valve is supplied with the heater It is necessary to check the safety valve each time before putting it into operation It is checked by manual moving of the membrane from the seat turning th...

Страница 9: ...ble 3 Figure 3 Figure 4 SAFETY VALVE START UP PRESSURE MPa ALLOWABLE OPERATING OVERPRESSURE OF WATER HEATER MPa MAXIMUM PRESSURE IN COLD WATER PIPES MPa 0 6 0 6 up to 0 48 0 7 0 7 up to 0 56 1 1 up to...

Страница 10: ...en colour of minimum cross section of 4 mm2 Access to the power section of the heater is only possible once the heater is disconnected from the power supply and the cover of the heater unscrewed Adher...

Страница 11: ...eck the water main and wiring Check proper placement of the operating and safety thermostat thermal fuse sensors The sensors must be inserted all the way in first the operating and then the safety the...

Страница 12: ...d after each heater shutdown for more than 5 days Attention The inlet cold water pipe and the connection fitting of the heater may heat up If the hot water heater does not work or if hot water is not...

Страница 13: ...CAUSES FAILURE SYMPTOM INDICATOR SOLUTION Water is cold Light on The temperature set on the thermostat is too low Heating element failure Water is cold Light off No supply voltage Thermostat failure...

Страница 14: ...ll hot water outputs must have a combination faucet Before filling the heater with water for the first time it is recommended to fasten the flange connection nuts of the tank It is not allowed to hand...

Страница 15: ...4 3 DISPOSAL OF PACKAGING MATERIAL AND NON FUNCTIONING PRODUCT The packaging that the product was delivered in has been paid for in form of a service fee for the provision of the return and recovery...

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