DRAZICE TO – 20.1 Electric Water Heater Instruction Manual

DRAZICE TO – 20.1 Electric Water Heater

Product Specifications

• Function Description: Electric Water Heater
• Material: Steel plate tank with enameled glaze anticorrosion protection
• Insulation: Polyurethane insulation for minimum heat losses
• Heating Element: G 5/4 thread heating element with thermostat sensor and thermal fuses

Product Usage Instructions

Operating Conditions
Ensure the following conditions are met before using the electric water heater:

• Check the wall’s bearing capacity to support the filled heater weight.
• Select appropriate fixtures based on the wall material.
• Consider discussing wall mounting with an expert or specialist company.

Wall Mounting
Follow these steps for wall mounting:

1. Check the wall material for suitability.
2. Select proper fixtures for mounting.
3. If unsure, consult with a specialist for anchoring.

CAREFULLY READ THIS MANUAL BEFORE INSTALLING THE WATER HEATER

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 experience unless supervised by a responsible person, or unless properly instructed by such a 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 an indoor environment with air temperatures from +2 °C to +45 °C and a relative humidity of up to 80 %.

The product’s reliability and safety are proven by tests implemented by the Engineering Test Institute in Brno. Made in the Czech Republic.

• 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.

TECHNICAL SPECIFICATION OF PRODUCT

FUNCTION DESCRIPTION
After the heater is connected to the electric network, the heating element starts heating water. The element is turned on and off by a thermostat. The thermostat can be set as per your need within the range from 5 °C to 75 °C. We recommend setting service water to a max temperature of “OPTIMUM”. This temperature ensures the optimal operation of the heater. After reaching the temperature set, the thermostat switches off the electric circuit and thus discontinues water heating. The control light signals if the element is in operation (the light is on) or if it is off (the light goes out). In case of longer operation without using the heated volume, the thermostat has to be set to position 5 °C to 12 °C (set the “snowflake” symbol on the thermostat selector) to avoid freezing.

ADVICE FOR CUSTOMERS

HOT WATER CONSUMPTION

• With its design, the electric accumulation heater TO – 20.1 is suitable for installations in bathrooms, lavatories, kitchens, or near sanitary units of panel flats, and complies with the requirements of Standards, with the IP 44 protection class. Its benefit is that it heats water by power in an unlimited all-day time range. The time of heating service water to the recommended temperature of “OPTIMUM” is about 31 minutes.
• 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.

ENERGY SAVING
Find out in what time intervals your electricity supplier provides reduced tariffs and, depending on that information, select the relevant volume and power input of the heater so that your hot water consumption covers the needs of your household.

EMERGENCY POWER CONSUMPTION
According to current legislation, the standby consumption is stated in the value of annual consumption of electric energy (kWh), which is measured according to the corresponding load profile and calculated according to the formulas and requirements of EU Regulation No. 812/2013.

DESIGN AND GENERAL HEATER DIMENSIONS
The heater tank is made of a steel plate and tested by 1.5 multiple of operation pressure value. The inner surface of the tank is provided (except the stainless coil) with anticorrosion protection of enameled glaze.
In the bottom part of the tank, there are wells for placing the heating, regulation, and safety elements of the water heater (heating element with right thread G 5/4″, thermostat sensor, and thermal fuses). A thermometer is installed in the top part of the heater that transmits information on heating the volume of service water. The heater tank is provided with highly valuable polyurethane insulation which ensures minimum heat losses.

Electric wiring is placed in the bottom part of the heater, under an easily removable guard of the heater (by loosening two screws on that guard). The temperature of water can be set by a thermostat within the range between 5 °C and 75° C, using the symbols on the thermostat selector button Figure 1. Cold water inflow is indicated with a blue ring, and hot water outflow is indicated with a red ring. All steel parts are protected against corrosion with paint and galvanic coating. To ensure anti-corrosion protection, the heating element head is provided with an anode rod that dissolves when the heater is in operation and has to be replaced after 3 years of operation (depending on the aggressiveness of the water).

OPERATION AND FITTING INSTRUCTIONS

OPERATING CONDITIONS

• The tank shall only be used by the conditions specified on the performance plate and in the instructions for electric wiring. Besides legally acknowledged national regulations and standards, conditions for connection defined in local electric and water works have to be adhered to, as well as the installation and operation manual. The room, in which the appliance will be operated, must be frost-free. The appliance has to be mounted at a convenient place, which means that the appliance must be easily available for potential necessary maintenance, repair, or replacement, as the case may be.
• If water is strongly calcareous we recommend that any of the common decalcifying devices be installed with the appliance, or that the thermostat be set to the minimum operating temperature of 55 °C (setting to position „OPTIMUM“). For proper operation, drinkable water of adequate quality shall be used. To avoid potential sediments, we recommend that the device be installed together with a water filter.

WALL MOUNTING
Before mounting, check 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. We recommend entrusting wall mounting and anchoring to a specialist company or discussing the anchorage with an expert.

If the water heater is mounted in a tight, small space, or an intermediate ceiling, etc., you have to make sure that the connecting side of the appliance (connections to water supply, area for electric plugging) remains accessible and no heat accumulation occurs. Free space of up to 600 mm from the bottom edge of the heater has to be available under the heater. When mounted directly under the ceiling, the distance from the ceiling has to be 100 mm at least

PLUMBING FIXTURE

• The safety valve can be mounted both in vertical and horizontal position in the indicated direction of cold water flow. The safety valve is mounted on the cold water inlet identified with a blue ring.
• The heater must be equipped with a membrane and spring-loaded safety valve. Safety valves with fixed pressure settings from the manufacturer are used for the assembly. Each individually lockable heater must be fitted with a cap on the cold water inlet, a test valve, or a stopper to check the operation of the check valve, with a drain valve, a check valve, and a safety valve (Figure 3). The safety valve with 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 the make-and-break device button always in the direction of the arrow. After being turned, the button must click back into a notch. The proper function of the make-and-break device results in water draining through the safety valve outlet pipe. In common operation, such a check needs to be implemented at least once a month, and after each heater shutdown for more than 5 days. Water may be dripping off the drain pipe of the safety valve; the pipe must be open into the air, pointed down; environment temperatures must not drop below zero.

Find the necessary pressure values in the below – Table 2.

Heaters must be provided with a discharge valve mounted on the cold service water inlet to the heater for potential disassembly or repair. When assembling the security equipment, follow the standard.

1. Combination faucet
2. Combination faucet
3. Water heater
4. Drain valve
5. Safety valve
6. Back flap
7. Test valve
8. Stop valve

ELECTRIC WIRING

ELECTRIC INSTALLATION GENERAL INFORMATION

• The electric wiring scheme is attached to the water heater on the inner side of the removable front guard (Figure 4).
• The degree of protection of the electric parts of the heater is IP 44. The power input of the electric element is 2200 W.

It is necessary to observe the below requirements during the electric wiring:

• The heater is connected to the 230V/50Hz mains with a power cable by inserting the plug into the socket.
• Repairs and wiring inspections may only be implemented by a company (person) authorized for such activity.
• The circuit must contain a circuit breaker (protector).
• To enhance the protection of the connection in bathrooms and shower inserts according to Standard, the appliance is provided with a grounding terminal for connecting with a yellow-green protective conductor on a minimum section of 4 mm2.
• To adjust the distance from the wall, connect the wire of the external protective bonding!
• Respect the rules of protection against electrical injuries under Standards.
• Access to the electric part of the heater is enabled only upon disconnecting the heater from the power supply and unscrewing the guard of the heater.

WARNING: If the supply cord is damaged, it must be replaced by a company (person) authorized to touch attractivity to a hazard.

FIRST HEATER COMMISSIONING

• Before opening the power supply, the tank must be filled with water. The process of first heating must be executed by a licensed professional who has to check it. Both the hot water outlet pipe and safety armature parts may be hot.
• During the heating process, the pressurized connection water that increases its volume due to heating must drip off the safety valve. In a non-pressurized connection, water drips off the overflow combination faucet. When heating is finished, the set temperature and the actual temperature of consumed water should be roughly equal. After connecting the heater to the water main and electrical power system, and after checking the safety valve (following the instructions attached to the valve), the heater can be put into operation.

The procedure of putting the heater into operation

1. Check the wiring and water supply; check the correct position of the thermostat sensors, they have to be inserted all the way. Sensors have to be installed into the sink as deep as possible – following the possibilities of each capillary, the controlling thermostat has to be installed as the first sensor into the capillary, followed by the safety thermostat as the second sensor installed into the capillary.
2. Open the hot water valve on the combination faucet.
3. Open the cold water inlet valve to the heater.
4. As soon as the water starts running through the hot water valve, the heater is filled, and the valve can be closed.
5. Before putting the heater into operation, screw on the front heater guard which closes the access to the electric compartment of the heater.
6. When hot service water is heated by electric energy, switch on the power supply.
7. When commencing operation, flush the heater until the cloudiness in the water is gone.
8. Make sure to fill in properly the warranty certificate.

PUTTING OUT OF SERVICE, DISCHARGE

WARNING: If the water heater is put out of service for a longer time, or if it is not going to be used it has to be drained and disconnected from the electric supply network. The switch for the supply lead or the fuse cut-outs has to be shut off.
At places with a permanent risk of frost, the water heater must be drained before the cold season starts if the appliance remains out of service for several days and if the power supply is disconnected.

WARNING: Drainage of service water shall be performed after closing the shut-off valve in the cold water supply piping (through the discharge valve for safety valve combination) and with simultaneous opening of all hot water valves of connected fittings. Hot water may outflow during the drainage! If there is a risk of frost it has to be considered that not only the water in the water heater and the hot water piping may get frozen but also the water in the entire cold water supply piping. It is therefore advisable to drain all fittings and piping that carry water, up to the part where the house water meter is installed (connection of the house to water main) which is not jeopardized by frost. When the tank is to be used again, it has to be filled with water and one needs to make sure that the water flowing out of the hot water does not contain any bubbles.

INSPECTION, MAINTENANCE & CARE FOR THE APPLIANCE

WARNING: During the heating process the water that increases its volume during the heating must drip off the safety valve outlet (in a non-pressurized connection this water drips off the combination faucet valve). In full heating (about 75 °C) the volumetric water gain is approx. 3% of the tank capacity. The function of the safety valve has to be checked regularly (based on the information contained in the attached safety valve manual). In common operation, such a check needs to be implemented at least once a month, and after each heater shutdown that exceeds 5 days.

Attention! In doing so, the cold water supply pipe and the connection fitting of the tank may get heated! If the water heater does not work, or if hot water is not withdrawn, no water shall drip off the safety valve. If water drips, then the pressure in the supply piping is either too high or the safety valve is defective. Please call a specialized plumber immediately!

Repetitive water heating causes limestone sediment on both the enameled tank walls and chiefly the flange lid. The sedimentation depends on the hardness of the water heated, its temperature, and the amount of hot water consumed. We recommend checking and cleaning the tank from scale and eventual replacement of the anode rod after two years of operation.

The anode life is theoretically calculated for two years of operation; however, it changes with water hardness and chemical composition in the place of use. Based on such an inspection, the next term of anode rod exchange may be determined. Have the company in charge of service affairs clean and exchange the anode. When draining water from the heater, the combination faucet valve for hot water must be open, preventing the occurrence of under- pressure in the heater tank which would stop the water from draining.

MOST FREQUENT FUNCTION FAILURES AND THEIR CAUSES

WARNING: Do not try to repair the failure yourselves. Seek either expert or service help. It does not take much for an expert to remove the defect. When making a repair appointment, report the type and serial number you find on the performance plate of your water heater.

IMPORTANT NOTICES

INSTALLATION REGULATIONS

• Without a confirmation of the performed plumbing fixture issued by an authorized company, the warranty certificate shall be void.
• All hot water outlets must be provided with a combination faucet.
• It is not allowed to handle the thermostat in any manner whatsoever, aside from temperature resetting with a control button.
• All electric installation handling, setting, and regulation feature exchange, may only be implemented by an authorized service company.
• The thermal fuse must not be turned off. In case of a thermostat defect, the thermal fuse interrupts electric power input to the heating element if the water temperature in the heater exceeds 90 °C.

WARNING: Both the electric and water installation must follow and meet the requirements and regulations relevant to the country of use!
We would like to emphasize that the heater must not be connected to a power supply if work involving flammable liquids (petrol, spot remover) or gases, etc., is performed nearby.

DISPOSAL OF PACKAGING MATERIAL AND FUNCTIONLESS PRODUCT

A service fee for providing return and recovery of packaging material has been paid for the packaging in which the water heater was delivered. The service fee was paid under Act No 477/2001 Coll., as amended, at EKO-KOM a.s. The client number of the company is F06020274. Take the water boiler packages to a waste disposal place determined by the town. When the operation terminates, disassemble and transport the discarded and unserviceable heater to a waste recycling center (collecting yard), or contact the manufacturer.

PRODUCT ACCESSORIES

• The product is supplied with a safety valve G1/2″, screws 6 x70 mm – 2 pcs, plastic dowels 12×60 mm – 2 pcs. The above parts are packed and placed in the packaging in the top part of the heater.
• It is in your interest to check the completeness of the accessories.

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Frequently Asked Questions

• Q: Can this water heater be installed by individuals without professional expertise?
  • A: It is recommended to entrust wall mounting and anchoring to a specialist company or expert due to safety and proper installation concerns.
• Q: What is the material of the heater tank?
  • A: The tank is made of steel plate with enameled glaze anticorrosion protection.

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