Drazice OKCE 80 Fiche technique

OPERATING AND

INSTALLATION MANUAL

TANK-TYPE WATER HEATER FOR VERTICAL

MOUNTING

Electric water heaters

4 kW/400 V

OKCE 80 OKCE 200 OKHE 80

OKCE 100 OKHE 100

OKCE 125 OKHE 125

OKCE 160 OKHE 160

Družstevní závody Dražice-strojírna s.r.o.

(Works Cooperative - Dražice - Machine Plant, Ltd.)

Dražice 69, 294 71 Benátky nad Jizerou

tel.: +420 / 326 370 911

fax: +420 / 326 370 980

e-mail: expo[email protected]

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CONTENTS

1PRODUCT TECHNICAL SPECIFICATION....................................................................................................... 4

1.1 FUNCTION DESCRIPTION ................................................................................................................... 4

1.2 ADVICE FOR CUSTOMERS .................................................................................................................. 4

1.2.1HOT WATER CONSUMPTION..................................................................................................... 4

1.2.2 ENERGY SAVING......................................................................................................................... 4

1.2.3 EMERGENCY POWER CONSUMPTION ....................................................................................... 4

1.3 DESIGN AND GENERAL HEATER DIMENSIONS................................................................................... 6

2OPERATION AND FITTING INSTRUCTIONS.................................................................................................9

2.1 OPERATING CONDITIONS .................................................................................................................. 9

2.2 WALL MOUNTING.............................................................................................................................. 9

2.3 PLUMBING FIXTURE......................................................................................................................... 10

2.4 ELECTRICAL INSTALLATION.............................................................................................................. 12

2.4.1 GENERAL INFORMATION FOR ELECTRICAL INSTALLATION ..................................................... 12

2.5 OPERATING ACTIVITY ...................................................................................................................... 13

2.6 FIRST COMMISSIONING................................................................................................................... 13

2.7 PUTTING OUT OF SERVICE, DISCHARGE .......................................................................................... 14

2.8 INSPECTION, MAINTENANCE & CARE FOR THE APPLIANCE............................................................ 14

2.9 MOST FREQUENT FUNCTION FAILURES AND THEIR CAUSES .......................................................... 15

3OPERATION OF THERMOSTAT................................................................................................................. 16

3.1 SERVICING........................................................................................................................................ 16

3.1.1 TEMPERATURE SETTING .......................................................................................................... 17

4IMPORTANT NOTICES .............................................................................................................................. 18

4.1 INSTALLATION REGULATIONS.......................................................................................................... 18

4.2 TRANSPORT & STORAGE INSTRUCTIONS ........................................................................................ 18

4.3 DISPOSAL OF PACKAGING MATERIAL AND NON-FUNCTIONING PRODUCT.................................... 19

5PRODUCT ACCESSORIES .......................................................................................................................... 19

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CAREFULLY READ THIS MANUAL BEFORE INSTALLING THE WATER HEATER!

Dear Customer,

The Works Cooperative of Dražice - 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.

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1PRODUCT TECHNICAL SPECIFICATION

1.1 FUNCTION DESCRIPTION

Tank type water heater (the heater hereinafter) is designed for the accumulation heating of service water

by electric energy.Water is heated by an electric element in an enamelled thermally insulated tank

at the time defined by the power supplier. The element is at the time of heating controlled by a thermostat

the temperature of which can be adjusted continuously (within the range between 5 °C and 74 °C). Once

the selected 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.

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.

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TYPE OKCE 80

OKHE 80

OKCE 100

OKHE 100

OKCE 125

OKHE 125

OKCE 160

OKHE 160

OKCE 200

VOLUME L 80 100 125 152 200

MAX OPERATING

OVERPRESSURE IN THE TANK MPa 0.6

ELECTRICAL CONNECTION V 3/N/PE ~ 400V/50Hz

RECOMMENDED BREAKER 3x10 A

INPUT W 4000

EL. PROTECTION IP 44

MAX OPERATING

TEMPERATURE OF HOT

WATER (HW)

°C 80

RECOMMENDED HOT WATER

(HW) TEMPERATURE °C 60

HEIGHT OF THE HEATER mm 757

740

902

885

1067

1050

1255

1235 1290

HEATER DIAMETER

(only OKCE) mm 524 524 524 524 584

THE HEATER DIMENSION

width x depth

(only OKHE)

mm 520x550

MAX WEIGHT OF THE HEATER

WITHOUT WATER kg 33/35 40/39 44/46 50/52 67

TIME OF EL. HEATING

FROM 10°C TO 60°C* hrs 1.21.51.82.22.9

LOAD PROFILE M M M L XL

ANNUAL CONSUMPTION

OF ELECTRIC ENERGY kWh 1342

1391

1362

1395

1409

1374

2622

2715

4403

MIXED WATER V40 L 138.7165.41 231.1242.83 331.26

Table 1

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1.3 DESIGN AND GENERAL HEATER DIMENSIONS

The heater tanks are made of a steel plate and tested by 1.5 MPa multiple of operation pressure value.

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, thermostat sensors and safety fuses are located in the flange lid. An anode rod is mounted

onto the M8 nut. Electric wiring is placed underneath the plastic removable cover. Description of basic parts

of the heater - Figure 1. Heater dimensions - Figure 2and Table 2, Figure 3and Table 3.

Figure 1

1. Temperature indicator

2. Heating element well

3. Ceramic heating element 4000W

4. Service thermostat with external control

and safety pipe

5. Electric installation cover

6. Cold water supply pipe

7. Thermowell

8. Hot water withdrawal pipe

9. Mg anode

10. Enamelled steel receptacle

11. Polyurethane insulation

12. Heater shell

- 7 -

OKCE 80, OKCE 100, OKCE 125, OKCE 160, OKCE 200

Figure 2

Table 2

OKCE 80 OKCE 100 OKCE 125 OKCE 160 OKCE 200

A 757 902 1067 1255 1290

B 562 562 562 562 600

C 14 14 14 14 14

D 524 524 524 524 584

E 605 725 760 1000 795

F 508 654 682 925 600

H 142 167 297 245 485

K 116 116 116 116 116

R 450 450 450 450 450

3/4" outer

Upper and lower Hinge 200L

4 anchoring screws

Dimensions 450mm and F

check before drilling

Upper hinge 50 - 160L

2 anchoring screws

- 8 -

OKHE 80, OKHE 100, OKHE 125, OKHE 160

Figure 3

Table 3

OKHE 80 OKHE 100 OKHE 125 OKHE 160

A 740 885 1050 1235

B 550 550 550 550

C 19 19 19 19

D 520 520 520 520

E 582 727 757 1000

F 464 605 638 880

H 148 148 283 225

K 117 117 117 117

R 450 450 450 450

3/4" outer

- 9 -

2OPERATION 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 temperature at the place of heater installation must be higher than +2°C; and the room

must not freeze. The appliance has to be mounted at a convenient place, it 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

was installed with the appliance, or that the thermostat was set to the minimum operating

temperature of 60oC (setting to position „ECO“ or „OPTIMUM“) - Figure 12, Figure 13. 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. Should you have any doubts regarding the wall bearing capacity, consult

the suspension with a building specialist. The minimum diameter of the bolts for suspending

the heater is 12 mm. When mounting the anchor bolts follow the guide provided by the anchor

bolts' manufacturer.

Mount the anchors by the dimensional drawing (Figure 2, Figure 3) in 450 mm spacing. The heater verticality

after the release of the connecting screws can be aligned by means of slight turning. 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 at the heaters OKHE 80-160 l!

Figure 4

- 10 -

Universal suspension

The use of the suspension even for the screw spacing during the replacement with a heater of another type.

The heater verticality after the release of the connecting screws can be aligned by means of slight turning.

Figure 5

If the hot water heater is mounted in a tight, small 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 G1/2“ 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 1/2“.

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 6).

The safety valve with a check valve is supplied with the heater.

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