Drazice TJ 6/4“ -2 Scheda tecnica

OPERATING AND

INSTALLATION MANUAL

SCREW-MOUNTED ELECTRICAL HEATING

UNIT

TJ 6/4“ -2

TJ 6/4“ - 2,5

TJ 6/4“ - 3.3

TJ 6/4“ - 3.75

TJ 6/4“ - 4.5

TJ 6/4“ - 6

TJ 6/4“ - 7.5

TJ 6/4“ - 9

Družstevní závody Dražice - strojírna s.r.o.

Dražice 69, 294 71 Benátky nad Jizerou

Phone.: +420 /326 370 990

Fax: +420 / 326 370 980

e-mail: [email protected]

- 2 -

CONTENTS

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

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

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

1.3 DESIGN AND GENERAL HEATER DIMENSIONS................................................................................... 4

2 OPERATION AND FITTING INSTRUCTIONS................................................................................................. 5

2.1 ASSEMBLY.......................................................................................................................................... 5

2.2 ELECTRICAL INSTALLATION................................................................................................................ 6

2.2.1 GENERAL INFORMATION for ELECTRICAL INSTALLATION ......................................................... 6

2.2.2 WIRING SCHEME........................................................................................................................ 6

2.3 HEATING UNIT OPERATION ............................................................................................................... 7

2.4 INSPECTION, MAINTENANCE............................................................................................................. 7

2.5 MOST FREQUENT FUNCTION FAILURES AND THEIR CAUSES ............................................................ 7

3 IMPORTANT NOTICES ................................................................................................................................ 8

3.1 INSTALLATION REGULATIONS............................................................................................................ 8

3.2 SPARE PARTS...................................................................................................................................... 8

3.3 DISPOSAL OF PACKAGING MATERIAL AND NON-FUNCTIONING PRODUCT...................................... 8

- 3 -

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.

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 manufacturer reserves the right for engineering modification of the product.

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%. 80%.

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

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.

- 4 -

1PRODUCT TECHNICAL SPECIFICATION

1.1 FUNCTION DESCRIPTION

The screw-mounted electrical heating unit (heating unit) is designed exclusively for water heating. It is

designed as an additional heating source in water heaters connected in a system with solar collectors. It can

also be used as an additional source of heating in accumulation tanks. If the installation requirements are

obeyed, it can be used as the main source of heating by a heater, or for other purposes. It is not intended

for use in stainless tanks. Types with extended cooling compartment can be used in accumulation tanks

marked with v6 and v7.

Water is heated by tubular heating element. Thermowell contains sensors of a safety fuse and a thermostat

(both devices are in a single block). The thermostat controls the set temperature of water. In case of

a failure, the safety fuse switches off electricity supply in all poles within the temperature range of 0 –90°C.

1.2 ADVICE FOR CUSTOMERS

Prior to putting the heating element into operation, re-measuring of insulation resistance

is recommended. The insulation resistance in cold must not be below 50 MΩ. If the

insulation resistance is lower, we recommend drying the heating element.

Both electric and water installation must follow and meet requirements and regulations

relevant in the country of use.

1.3 DESIGN AND GENERAL HEATER DIMENSIONS

The heating unit consists of an electrical heating element with a connecting thread G 6/4“.(Figure 2)

A thermostat and a safety fuse; the element's operation control light; and a connecting terminal board are

placed under the wiring plastic cover Chyba! Nenalezen zdroj odkazů. To use the OKC … NTR, NTRR, OKCE

… NTR, NTRR heaters in solar systems with reheat by means of electricity, the heaters have a G 6/4" neck

placed for mounting a secondary electrical heating unit. The heating unit is placed above the lower

exchanger.

Thermostat button Electrical wiring cover Heating element Thermostat control Control light

Figure 1

Figure 2

- 5 -

TYPE

OUTPU

CONNECTION

connection

HEATING

TIME FROM

10°C TO

60°C

(approx 150

HEATING

TIME

FROM

35°C TO

60°C

(approx

150 l)

ELECTR.

PROTECTI

SET

TEMPERAT

URE SCOPE

UNIT

LENGTH

(L)

UNIT

LENGTH

(L1)

WEIGHT

hrs

°C

TJ 6/4“ – 2

1 PE-N AC

230 V/50Hz

4,5

2,2

IP 45

5 –74

380

1,6

TJ 6,4“ – 2,5

2,5

1 PE-N AC

230 V/50Hz

IP 45

5 –74

405

1,8

TJ 6,4“ – 3.3

3,3

3 PE-N AC

400 V/50Hz

2,7

1,5

IP 45

5 –74

325

2,0

TJ 6,4“ –

3.75

3,75

3 PE-N AC

400 V/50Hz

2,3

1,2

IP 45

5 –74

450

2,2

TJ 6,4“ – 4.5

4,5

3 PE-N AC

400 V/50Hz

IP 45

5 –74

500

2,3

TJ 6,4“ – 6

3 PE-N AC

400 V/50Hz

1,5

0,7

IP 45

5 –74

520

2,4

TJ 6,4“ – 7.5

7,5

3 PE-N AC

400 V/50Hz

1,3

0,6

IP 45

5 –74

575

685

2,4

TJ 6,4“ – 9

3 PE-N AC

400 V/50Hz

0,5

IP 45

5 –74

605

720

2,6

L - Screw-mounted electrical heating unit of TJ series

L1 - Screw-mounted electrical heating unit of TJ series with an extended cooling compartment

Table 1

2OPERATION AND FITTING INSTRUCTIONS

2.1 ASSEMBLY

The heating unit shall be mounted in the heater's neck. The end of the thread is provided

with a rubber seal. To ensure better tightness we recommend the screw joint being

additionally sealed with cannabis, a Teflon sealing tape or with a mastic sealant (be careful –

choose a mastic sealant suitable for demountable joints). Tighten the element properly.

If the cable bushing is not directed upright down, loosen the 4 screws on the plastic cover

bottom. Turn the cover (not more than by 180°) to the desired position and retighten the

screws. Check whether the live parts of the wiring do not touch.

- 6 -

2.2 ELECTRICAL INSTALLATION

2.2.1 GENERAL INFORMATION FOR ELECTRICAL INSTALLATION

The heating unit is connected to a 230/400 V 50 Hz electrical network conductor with

a corresponding section and a protection adequate to the heating element output.

Notice: The power supply must contain a breaker disconnecting all poles of the network.

Perform the installation in compliance with applicable CSN standards.

2.2.2 WIRING SCHEME

TJ 6/4“ – 2 P= 2 kW TJ 6/4“ - 3,3 P = 1,1 kW TJ 6/4“ - 7,5 P = 2,5 kW

TJ 6/4“ - 2,5 P= 2,5 kW TJ 6/4“ - 3,75 P = 1,25 kW TJ 6/4“ – 9 P = 3 kW

TJ 6/4“ - 4,5 P = 1,5 kW

TJ 6/4“ – 6 P = 2 kW

Figure 3

Figure 4 Figure 5

- 7 -

2.3 HEATING UNIT OPERATION

Simple control consists only of setting the desired temperature on the control thermostat knob. The setting

range is 5 -74°C. The recommended set temperature is 60°C approximately. The * symbol –fuse against

freezing 5-8°C. When the control light is on, the element is running.

2.4 INSPECTION, MAINTENANCE

Maintenance involves decalcification of the heating element in certain time intervals selected by water

hardness at the place of use. Damage to the heating element due to calcareous sediments is not accepted

by the manufacturer as a reason for complaint.

Notice: If the heating unit is used in an accumulation heater, the wear of the anode rod of

the heater may deteriorate. We recommend checking it more frequently. Consider the

instructions of the manufacturer regarding the exchange of the anode rod.

2.5 MOST FREQUENT FUNCTION FAILURES AND THEIR CAUSES

Table 2 Other potential failures –

FAILURE SYMPTOM

SOLUTION

The element operation

light is not on.

The safety fuse is non-self-returning.

It is activated by pressing a button on the

thermostat body.

If the heating element

fails, there is no

indication and the

control light is on even

when the thermostat is

active.

Have the heating unit repaired by an

authorised company.

Table 2

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.

- 8 -

3IMPORTANT NOTICES

3.1 INSTALLATION REGULATIONS

-When active, the element and the termowells have to be surrounded with a sufficient amount of

water from all sides.

-Thermic water flow must not be prevented.

-Mounting positions –horizontal or vertical from under.

-The length of the 6/4 “ neck shall not exceed 70 mm. If longer, the variant with an extended cooling

compartment has to be used.

-If the length of the neck is within 100 mm, it has to be extended on the water side, or undercut in

a minimum length of 40 mm to the minimal diameter of 50 mm.

-The maximum pressure in the tank is 10 bar.

Both the electric and water installation must follow and meet the requirements and

regulations relevant in the country of use!

3.2 SPARE PARTS

Always state the type of the heating unit and the name of the spare part when placing an order.

Thermostat and safety fuse Conductors

Sealing ring

3.3 DISPOSAL OF PACKAGING MATERIAL AND NON-

FUNCTIONING 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 heater

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 centre (collecting yard), or contact

the manufacturer.

31-10-2016

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