DRAZICE OKC 80 Tank Type Water Heaters Instruction Manual
- October 30, 2023
- Drazice
Table of Contents
OPERATING AND
INSTALLATION MANUAL
COMBINED WATER HEATERS AND TANKS FOR VERTICAL ASSEMBLY
Tank-type water heaters
OKC 80 | OKC 160 |
---|---|
OKC 100 | OKC 200 |
OKC 125 |
Hot water tanks
CAREFULLY READ THIS MANUAL BEFORE INSTALLING THE WATER HEATER!
Dear Customer,
Družstevní závody Dražice – strojírna s.r.o., 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.
PRODUCT TECHNICAL SPECIFICATION
1.1 FUNCTION DESCRIPTION
The heater is designed for the so-called accumulation heating of service water
by electric energy, or by thermal energy through exchanger. Water is heated by
an electric element at a time determined by the electricity supplier, or by a
heat exchanger in an enameled thermally insulated tank. At the time of the
heating, the element is controlled by thermostat on which the desired
temperature can be set (ranging from 5 and 75 °C). Once the selected
temperature is reached, heating interrupts automatically. Water accumulated in
the tank is then used for the 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. The pressure principle
allows hot water withdrawal at any place from the heater.
1.2 ADVICE FOR CUSTOMERS
1.2.1 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.
1.2.2 ENERGY SAVING
The heater is insulated with quality polyurethane Freon free foam. Set 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
body.
1.2.3 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
units [kWh/24h] and indicates the amount of power needed to maintain the set
temperature. This text is valid for hot water tanks – variant OKC 1m 2 .
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. This text is valid
for water heaters – variant OKC.
TANK HEATER TYPES| NOMINAL CAPACITY [l]| HEATING TIME FROM
10°C TO 60°C [hours]
| ELECTRICITY CONSUMPTION FOR HEATING OF VOLUME FROM 15°C TO 65°C [kWh]
---|---|---|---
OKC 80|
73
|
1.9
|
4.8
OKC 100; OKC 100/1 m 2| 93
95
|
2.5
|
6
OKC 125; OKC 125/1 m 2| 117
120
| 3.1
3.2
|
8
OKC 160; OKC 160/1 m 2| 145
147
| 3.8
3.9
|
9.6
OKC 200; OKC 200/1 m 2| 194
195
| 5.1
5.2
|
12
Table 1
1.3 DESIGN AND GENERAL HEATER DIMENSIONS
The heater tanks are made of a steel plate and tested by 1.5 multiple of
operation pressure value. The inside of the tank is enameled. 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. An anode rod is mounted onto the 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.
OKC 80, OKC 100, OKC 125
OKC 100/1m 2 , OKC 125/1m 2
| ****
OKC 80
| OKC 100 OKC 100/1m 2| OKC 125 OKC 125/1m 2| OKC 160 OKC 160/1m
2| OKC 200 OKC 200/1m 2
---|---|---|---|---|---
A| 757| 902| 1067| 1255| 1300
B| 612| 612| 612| 612| 672
C| 70| 70| 70| 70| 70
D| 524| 524| 524| 524| 584
E| 605| 755/622| 755/789| 995/991| 804
F| 460| 610/478| 610/645| 720/815| 600
G| –| -/550| -/550| -/830| -/902
H| 142| 137/270| 302/268| 250/254| 490
I| 211| 211/263| 211/263| 211/263| 252
J| 501| 651/703| 651/703| 651/703| 692
K| 172| 172| 172| 172| 172
R| 450| 450| 450| 450| 450
- Check the R dimensions before drilling.
The values behind the slash apply to heaters with a 1 m exchanger. 2
Table 2
TYPE
| | ****
OKC 80
| OKC 100 OKC 100/1 m 2| OKC 125 OKC 125/1 m 2| OKC 160 OKC 160/1
m 2| OKC 200 OKC 200/1 m 2
---|---|---|---|---|---|---
VOLUME| l| 73| 93
95
| 117
120
| 145
147
| 194
195
MAX OPERATING OVERPRESSURE IN THE TANK| ****
bar
| | | ****
6
| |
**MAX MAXIMUM OPERATING OVERPRESSURE IN THE EXCHANGER*| **
bar
| | | ****
10
| |
ELECTRICAL CONNECTION| | | | ****
1 PE-N ~ 230V/50Hz
|
RECOMMENDED BREAKER| | | | ****
16 A
| |
INPUT| W| | | 2200| |
EL. PROTECTION| | | | IP 44| |
MAX TEMPERATURE
OF HOT WATER
| °C| | | 80| |
MAX OPERATING TEMPERATURE IN THE EXCHANGER| ****
°C
| | | ****
110
| |
RECOMMENDED TEMPERATURE OF| °C| | | 60| |
HEIGHT OF THE HEATER| mm| 757| 902| 1067| 1255| 1300
DIAMETER OF THE HEATER| ****
mm
| ****
524
| ****
524
| ****
524
| ****
524
| ****
584
MAX WEIGHT OF THE HEATER WITHOUT WATER| ****
kg
| ****
40
| 50
57
| 55
64
| 62
71
| 79
85
TIME OF EL. HEATING
FROM 10°C TO 60°C
| ****
hours
| ****
1.9
| ****
2.5
| 3.1
3.2
| 3.8
3.9
| 5.1
5.2
TYPE| | OKC 80| OKC 100| OKC 125| OKC 160| OKC
200
---|---|---|---|---|---|---
EXCHANGER HEAT TRANSFER SURFACE | m2| 0.41| 0.68| 0.68| 0.68| 0.68
HEATING TIME BY EXCHANGER FROM 10°C TO 60°C AT FLOW 720 l/h | ****
min
| ****
32
| ****
23
| ****
28
| ****
35
| ****
45
RATED THERMAL OUTPUT AT HEATING WATER
TEMPERATURE 80°C AND
**FLOW 720 l/h ***
| ****
W
| ****
9000
| ****
17000
| ****
17000
| ****
17000
| ****
17000
HEATING TIME BY
**EXCHANGER FROM 10°C TO 60°C AT FLOW 310 l/h ***
| ****
min
| ****
50
| ****
48
| ****
55
| ****
67
| ****
86
RATED THERMAL OUTPUT AT HEATING WATER
TEMPERATURE 80°C AND
**FLOW 310 l/h ***
| ****
W
| ****
6000
| ****
9000
| ****
9000
| ****
9000
| ****
9000
MIXED WATER V40| l| 138.70| 165.41| 231.10| 242.83| 331.26
LOAD PROFILE| | M| M| M| L| XL
ENERGY EFFICIENCY CLASS| | C| C| C| C| C
ENERGY EFFICIENCY| %| 38| 38| 36| 39| 38
ANNUAL CONSUMPTION OF ELECTRIC ENERGY| kWh| 1342| 1362| 1409| 2622| 4403
TYPE| | | OKC 100/1m 2| OKC 125/1m 2| OKC 160/1m 2|
OKC 200/1m 2
**EXCHANGER HEAT TRANSFER SURFACE *| m2| –| 1.08| 1.08| 1.08| 1.08
RATED OUTPUT AT HEATING WATER**
TEMPERATURE OF 80°C
**AND FLOW 720 L/H ***
| ****
W
| ****
–
| ****
24000
| ****
24000
| ****
24000
| ****
24000
HEATING TIME BY
EXCHANGER FROM 10°C TO 60°C
| ****
min
| ****
–
| ****
14
| ****
17
| ****
21
| ****
28
MIXED WATER V40| | –| 165.41| 231.10| 242.83| 331.26
ENERGY EFFICIENCY CLASS| | –| B| C| C| C
STATIC LOSS| W| –| 47| 57| 67| 72
OPERATION AND FITTING INSTRUCTIONS
2.1 OPERATING CONDITIONS
The tank shall only be used in accordance with the conditions specified on the
power plate and in instructions for electric wiring. Besides legally
acknowledged national regulations and standards, also 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
temperature in the heater installation location must not exceed +2 °C. The
appliance has to be mounted at a convenient place; it means that the appliance
must be easily accessible for potential necessary maintenance, repair or
replacement, as the case may be.
We would like to emphasize that the heater must not be connected to power
supply if work involving flammable liquids (petrol, spot remover) or gases,
etc., is performed nearby.
If water is strongly calcareous we recommend that any of the common
decalcifying device was installed with the appliance, or the thermostat to be
set to the minimum operation temperature of 55 °C (setting to position
„OPTIMUM“) – Figure 12. For proper operation, drinkable water of adequate
quality shall be used. To avoid potential sediments, we recommend that the
device was installed together with a water filter.
2.2 WALL MOUNTING
Prior to the 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 consult the
suspension with a building specialist. When mounting the anchor bolts follow
the manual provided by the anchor bolts’ manufacturer.
Mount the anchors by the dimensional drawing (Figure 1 to Figure 4) in a 450
mm spacing. Double check the torque of the suspension bolts on the heater and
suspend the heater. Using the detent support in the bottom part of the heater
make sure it runs in parallel with the wall (Figure 5) in the 80 – 125 l
heaters.
If the hot water heater is mounted in a tight, smaller space, or in an
intermediate ceiling, etc., you have to make sure that the connecting side of
the appliance (connections to water supply, area for electric plugging)
remained 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 50 mm at least. If the water heater is mounted in enclosed areas, inter-
ceilings, built-in structures and recesses, ensure sufficient access to
service fittings, electrical terminal boards, anodes and manholes. Minimum
spacing from manhole is 600 mm.
2.3 PLUMBING FIXTURE
The heater connects to water distribution tubes with G3/4“ thread in the
bottom part of the heater. Blue – cold water supply, red – hot water outlet.
For potential disconnection of the heater, the service water inlets and
outlets must be provided with screw coupling Js 3/4“. The safety valve is
mounted on the cold water inlet identified with a blue ring.
The heater must be equipped with a membrane, 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 check valve and a relief valve (Figure 7). 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. 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 necessary pressure values in the below – Table 5.
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.
SAFETY VALVE STARTING PRESSURE [MPa]
| ACCEPTABLE OPERATING OVER-PRESSURE OF THE WATER HEATER [MPa]| ****
MAX COLD WATER PRESSURE IN PIPING [MPa]
---|---|---
0.6| 0.6| up to 0.48
It is recommended to install stop valves on the heating water inlet and outlet
(for possible dismantling of the heater).
The valves have to be as close to the heater as possible to avoid higher
thermal losses.
2.4 ELECTRICAL INSTALLATION
2.4.1 GENERAL INFORMATION FOR ELECTRICAL INSTALLATION
Perform the connection according to the scheme. Factory connection must not be
changed! (Figure 10).
In the electric wiring casing remove the partition corresponding with the
input wire diameter of Ø8 or Ø10 (Figure 9). The degree of protection of
electric parts of the heater is IP 44. Power input of electric element is 2200
W.
It is necessary to observe the below requirements during the electric wiring.
- The wiring diagram is attached to the heater on the electrical installation guard (see Figure 10).
- The electrical installation shall only be connected, repaired and inspected by a person authorized to perform that activity.
- Expert connection must be confirmed on the warranty certificate.
- The heater is connected to the 230 V/50 Hz electricity supply using a fixed moving conductor with a circuit breaker (protector).
- In the OKC 80 – 125 and OKC 100 – 125/1m heaters, after wall mounting and adjusting the distance from the wall by M8x80 rectifying screw, connect the external protective connection wire to the rectifying screw. 2
- In the OKC 160 – 200 and OKC 160 – 200/1m heaters, after wall mounting, connect the external protective connection wire to the bottom hinge to the earth screw. 2
- Installations in bathrooms, laundry rooms, rest rooms and showers, must be in compliance with standard.
- The degree of protection of electric parts of the heater is IP 44.
- Adhere to the protection against electric shock injury according to standard.
2.5 OPERATING ACTIVITY
a) Water heating by electric energy
After the heater is connected to electric network, the heating element starts
heating water. The element is turned on and off by a thermostat. After
reaching the temperature set, the thermostat switches off the electric circuit
and discontinues water heating. The control light signals if the element is in
operation (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 10 °C (set the “snowflake” symbol on the thermostat
selector) to avoid its freezing, or electricity supply to the heater has to be
switched off. In combined versions, the stop valve on the inlet to the
exchanger has to be closed at the inlet to the heat exchanger while which
prevents heating the water in the hot water heating system.
b) Service water heating via thermal energy through heat exchanger
Closing valves of the heat exchanger must be opened which ensures heating
water flow from the hot water heating system. Together with the closing valve,
it is recommended to install an air outlet valve at the inlet to the heat
exchanger in order to bleed the heat exchanger as needed, in particular before
the beginning of the heating season (Figure 7). The time it takes to heat up
using the heat exchanger depends on the temperature and flow of water in the
hot water heating system. A combined heater is made in universal
design – depending on the need of connecting the closing valves to the heating
element either from the right, or from the left.
2.6 FIRST COMMISSIONING
After connecting the heater to the water supply, the hot water heating
system, the electric network, and after testing its safety valve (based on the
valve manual attached), the heater may be put into operation. Before opening
the power supply, the tank must be filled with water. The process of first
heating must be executed by 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 non-pressurized
connection water drips off the overflow combination faucet. When heating is
finished, the set temperature and the actual temperature of consumed water
must be more-or-less the same. 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.
Procedure of putting the heater into operation
- Check both water and electric installation; for combined heaters, check also the installation to the hot water heating system. Check proper placement of thermostat sensors. The sensors must be inserted all the way in; first the thermostat and then the safety fuse.
- Open the hot water valve on the combination faucet.
- Open the cold water inlet valve to the heater.
- Once water starts draining through the combination faucet valve for hot water, the filling of the heater is completed and the valve can be closed.
- In case of leakage (of flange lid), we recommend that the flange lid bolts are fastened.
- Screw down the electric installation guard.
- When heating utility water with heat energy from the hot water heating system, open the heating water inlet and outlet valves, or de-aerate the exchanger.
- When commencing operation, flush the heater until the cloudiness in the water is gone.
- Make sure to fill in properly the warranty certificate.
2.7 PUTTING OUT OF SERVICE, DISCHARGE
If the hot 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 have to be
shut off.
At places with permanent risk of frost the hot 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.
Drainage of utility 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 hot water
heater and in 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 at the hot
water valves did not contain any bubbles.
2.8 INSPECTION, MAINTENANCE & CARE FOR THE APPLIANCE
During the heating process the water that increases its volume during the
heating must drip off the safety valve outlet (in 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 hot 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 (if higher
than 4.8 bars, a pressure control valve has to be fitted), or the safety valve
is defective. Please call a specialized plumber immediately!
If water contains too many minerals, an expert has to come to remove the scale
that forms inside the tank, as well as free sediments. This has to be
performed after one or two years of operation. The cleaning is carried out
through the hole in the flange – dismantle the flange lid and clean the tank.
A new sealing has to be used for re-fitting. Since the inside of the heater
has special enamel, which must not get in contact with the scale removing
agent – do not work with a lime pump. Remove the lime layer with a timber and
suck it off or wipe it off with a clout. After that, the appliance must be
rinsed thoroughly, and the heating process is checked the same as during the
initial putting in operation. Do not use any abrasive cleaning agents (such as
liquid sand, chemicals – acid, alkaline) or dye thinners (such as cellulose
thinner, trichlor, and the like) to clean the outer shell of the heater. For
cleaning use a wet clout and add a few drops of liquid cleaning agent for
household applications. Repeated heating causes lime scale settling on the
receptacle walls and mostly on the lid of the flange. Lime scale settling
depends on hardness of heated water, its temperature and on the volume of hot
water used.
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. If the
anode is only blocked with sediments clean its surface and, if used up, mount
a new one. Have a company in charge of service affairs deal with the cleaning
and exchanging of the anode. When draining water from the heater, the
combination faucet valve for hot water must be open, preventing occurrence of
under-pressure in the heater tank which would stop the water from draining.
2.9 MOST FREQUENT FUNCTION FAILURES AND THEIR 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
· Safety thermostat shut off probably due to failed operation thermostat
Water is not warm enough
|
· Light on
| · Failure of one of the coils in the element (contains 2 x 1000 W)
Temperature of water is not corresponding with the set value| |
· Defective thermostat
Water is constantly dripping off the safety valve|
· Light off
|
· High input pressure
· Defective safety valve
Table 6
Do not attempt 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.
OPERATION OF THERMOSTAT
3.1 OPERATING DEVICES OF THE HEATER
Electric installation cover for heaters OKC and OKC 1m3
Thermostat and no other part of the control panel is not a bearing part which
can be used for any handling with the heater.
3.1.1 TEMPERATURE SETTING
Water temperature is set by turning the thermostat knob. The desired symbol is
adjusted against the fixed point on the control panel.
Adjusting the thermostat knob to the left backstop does not mean permanent shutoff of the heating element. When the heater is in use without blocking the daily rate, we do not recommend the temperature to be set above 55 °C. Select the “OPTIMUM” symbol as the maximum (Figure 12).
IMPORTANT NOTICES
4.1 INSTALLATION REGULATIONS
– Without a confirmation of performed electrical installation issued by an
authorized company, the warranty certificate shall be void.
– Check and exchange the Mg anode regularly.
– You have to apply for approval of a local power supplier to connect the
heater.
– No stop valves can be put between the heater and the safety valve.
– If the overpressure in the water main exceeds 0.48 MPa, a pressure control
valve must be mounted before the safety valve.
– All 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 handle the thermostat, aside from temperature resetting
with a control button.
– All electric installation handling, adjustment and replacement of the
regulation elements shall only be performed by an authorized service company.
– The thermal fuse must not be turned off! In case of thermostat defect, the
thermal fuse interrupts electric power input to the heating element if the
water temperature in the heater exceeds 90 °C. – As an exception, the thermal
fuse may also switch off due to water overheating caused by overheating the
hot water heating system boiler.
– We recommend you operate the heater with one type of energy.
– If you don’t use the heater (hot water tank) for longer than 24 hours, or if
the facility with heater is unattended, close the cold water inlet to the
heater.
– The heater (hot water tank) shall be used exclusively in accordance with the
conditions specified on the performance plate and in the instructions for
electric wiring.
Both the electric and water installation must follow and meet the requirements
and regulations relevant in the country of use!
4.2 TRANSPORT & STORAGE INSTRUCTIONS
The device shall be transported and stored in dry place and protected from
weather effects with temperature range from -15 to +50 °C. During loading and
unloading the instructions stated on the packaging shall be observed.
Due to the transport and thermal dilatations, excessive enamel may fall off on
the bottom of the receptacle in heaters with exchanger. This phenomenon is
very common and has no impact on the quality and service life of the heater.
Decisive is the enamel layer that remains on the receptacle. DZD has long-term
experience with this phenomenon, and it is not a reason for claim.
4.3 DISPOSAL OF PACKAGING MATERIAL AND NONFUNCTIONING PRODUCT
A service fee for providing return and recovery of packaging material has been
paid for the packaging in which the product was delivered. The service fee was
paid pursuant to 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, 2-4 fastening screws M 12×30, 2-4
washers Ø 13, hinges (consoles), a thermometer, rectifying (spacer) screw M8,
fan-shaped washer Ø 8.4 – 2 pcs, nuts M8.
The above parts are packed and placed in the packaging in the top part of the
heater. It is in your own interest to check the completeness of the
accessories. 14-10-2022
www.dzd.cz
Družstevní závody Dražice-strojírna s.r.o.
Dražice 69, 294 71 Benátky nad Jizerou
tel.: +420 / 326 370 911
fax: +420 / 326 370 980
e-mail: export@dzd.cz
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