Drazice OKCE 100 S/2 Specification sheet

OPERATING AND
INSTALLATION MANUAL
STATIONARY ELECTRICAL WATER HEATERS
OKCE 100 S/2,2 kW
OKCE 125 S/2,2 kW
OKCE 160 S/2,2 kW
OKCE 160 S/3-6 kW
OKCE 200 S/2,2 kW
OKCE 200 S/3-6 kW
OKCE 250 S/2,2 kW
OKCE 250 S/3-6 kW
OKCE 300 S/1 MPa
OKCE 400 S/1 MPa
OKCE 500 S/1 MPa
OKCE 750 S/1 MPa
OKCE 1000 S/1 MPa
Družstevní závody Dražice - strojírna s.r.o.
Dražice 69, 294 71 Benátky nad Jizerou
Phone.: [phone]
Fax: +420 / 326 370 980
e-mail: [e-mail]

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CONTENTS
1PRODUCT TECHNICAL SPECIFICATION....................................................................................................... 4
1.1 FUNCTION DESCRIPTION ................................................................................................................... 4
1.2 PRODUCT DESCRIPTION .................................................................................................................... 4
1.3 DESIGN AND GENERAL HEATER DIMENSIONS................................................................................... 5
1.4 TECHNICAL PARAMETERS................................................................................................................ 11
2OPERATION AND FITTING INSTRUCTIONS............................................................................................... 12
2.1 OPERATING CONDITIONS ................................................................................................................ 12
2.2 ELECTRICAL INSTALLATION.............................................................................................................. 12
2.2.1 ELECTRIC INSTALLATION FOR: OKCE 100 S/2.2 kW; OKCE 125 S/2.2 kW;............................... 12
2.2.2 ELECTRIC INSTALLATION FOR: OKCE 160 S/2,2 kW, OKCE 160 S/3-6 kW, OKCE 200 S/2,2 kW,
OKCE 200 S/3-6 kW, OKCE 250 S/2,2 kW, OKCE 250 S/3-6 kW, OKCE 300 S/1 MPa ,OKCE 400 S/1 MPa,
OKCE 500 S/1 MPa................................................................................................................................... 13
2.2.3 ELECTRIC INSTALLATION ONLY FOR:
OKCE 300 S/1MPa, OKCE 400 S/1MPa , OKCE 500
S/1MPa, OKCE 750 S/1MPa, OKCE 1000 S/1MPa.................................................................................... 17
2.2.4 PLUMBING FIXTURE................................................................................................................. 18
2.3 FURTHER INFORMATION................................................................................................................. 19
2.4 FIRST COMMISSIONING................................................................................................................... 20
2.5 HEATER CLEANING AND ANODE ROD EXCHANGE........................................................................... 21
2.6 SPARE PARTS.................................................................................................................................... 21
3OPERATION OF THERMOSTAT................................................................................................................. 22
3.1 SERVICING........................................................................................................................................ 22
3.1.1 OPERATION DEVICES OF THE OKCE 100-125 S/2.2 kw HEATER.............................................. 22
3.1.2 TEMPERATURE SETTING .......................................................................................................... 22
3.2 MOST FREQUENT FUNCTION FAILURES AND THEIR CAUSES .......................................................... 23
4IMPORTANT NOTICES .............................................................................................................................. 24
4.1 INSTALLATION REGULATIONS.......................................................................................................... 24
4.2 DISPOSAL OF PACKAGING MATERIAL AND NON-FUNCTIONING PRODUCT.................................... 24
5 ASSEMBLY GUIDE FOR ZIP-FASTENER INSULATION ................................................................................ 25

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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. 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%. 80%.
Product’s reliability and safety is proven by tests implemented by the Engineering Test Institute in Brno.

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1PRODUCT TECHNICAL SPECIFICATION
1.1 FUNCTION DESCRIPTION
OKCE line water heaters use only electricity for heating. Their nominal performance provides sufficient
amount of hot water for flat units, premises, restaurants, and similar establishments.
1.2 PRODUCT DESCRIPTION
The heater tank is welded from a steel sheet; it is entirely coated with hot water resistant enamel. For
additional corrosion protection a magnesium anode is mounted in the upper part of the heater to adjust
the electric potential inside the tank, reducing the risk of corrosion. All types have the outlets of hot and
cold water and a circulation opening welded to them. The receptacle is insulated with 40-65 mm
polyurethane foam. The heater shield consists of a steel, powder-paint coated, sheet; the connecting parts
are metal coated.
In 100-125 litre heaters, a flange is welded onto the upper bottom of the receptacle to which the lid of the
flange is screwed. A sealing ring is inserted between the flange lid and the flange.
Thermowells for placing a heating element and regulation and safety thermostat sensors and capillary
thermometer are located in the flange lid. Electric wiring is placed underneath the plastic removable cover.
Under the plastic cover in 160-250 litre heaters, there is a cleaning and revision opening ended with a
flange on the side of the heater; a heating unit of different power can be mounted in the opening. The
heater is to be placed on the ground.
Tanks between 100 and 250 litres are tested with the pressure of 0.9 MPa; 300 litre tanks are tested with
1.5 MPa.

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TYP OKCE 100 S/2,2 kW OKCE 125 S/2,2 kW
A902 1067
B893 1058
C144 144
D524 524
L535 635
1.3 DESIGN AND GENERAL HEATER DIMENSIONS
OKCE 100 S/2.2 kW; OKCE 125 S/2.2 kW;
Figure 1
①3/4" outer
②3/4" inner
③1/2" inner

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TYP OKCE 160 S/2,2 kW OKCE 200 S/2,2 kW OKCE 250 S/2,2 kW
A1047 1357 1537
B705 705 705
C79 79 79
D584 584 584
E519 859 1059
F966 1279 1459
G242 242 242
H524 813 813
OKCE 160 S/2,2 kW, OKCE 200 S/2,2 kW, OKCE 250 S/2,2 kW
Figure 2
①3/4" outer
②3/4" inner
③6/4" inner

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TYP OKCE 160 S/3-6 kW OKCE 200 S/3-6 kW OKCE 250 S/3-6 kW
A1047 1357 1537
B705 705 705
C79 79 79
D584 584 584
E518 859 1059
F965 1279 1459
G289 289 289
H - 813 813
OKCE 160 S/3-6 kW
OKCE 200 S/3-6 kW, OKCE 250 S/3-6 kW
Figure 3
①3/4" outer
②3/4" inner
③6/4" inner

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OKCE 300 S/1 MPa
Figure 4
A1578
B724
C79
D650
F756
G304
J897
①3/4" outer
②3/4" inner
③6/4" inner

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OKCE 400 S/1MPa OKCE 500 S/1MPa
A1920 1924
B734 779
C79 55
D650 700
E514 380
F1194 1264
G304 287
H1289 1409
I1798 1790
J1005 1040
OKCE 400 S/1 MPa; OKCE 500 S/1 MPa
Figure 5
①3/4" outer
②3/4" inner
③
1/2" inner
Thermowell for
sensor
④6/4" inner

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OKCE 750 S/1MPa OKCE 1000 S/1MPa
A2030 2050
B1030 1130
C100 100
D1 910 1010
D2 750 850
D3 225 225
E292 300
F947 955
G382 390
H1147 1155
I1893 1910
J1477 1515
L1642 1650
OKCE 750 S/1 MPa; OKCE 1,000 S/1 MPa
Figure 6
①
2" outer
②
5/4" inner
③
1/2" inner
④
5/4" outer

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1.4 TECHNICAL PARAMETERS
MODEL OKCE 100
S/2,2kW
OKCE 125
S/2,2 kW
OKCE 160
S/2,2 kW
OKCE 200
S/2,2 kW
OKCE 250
S/2,2 kW
OKCE 160
S/3,6 kW
OKCE 200 S/3-
6 kW
OKCE 250 S/3-
6 kW
Capacity [l]
100
125
160
220
259
WEIGHT [kg] 42 49
58
72
80
67
81
89
TANK OPERATING
PRESSURE [MPa]
0,6
MAX HEATING
WATER
TEMPERATURE
(°C)
90
HEATING TIME
FRTOM 10
℃
to
60°C [h]
2,9 3,6
4,2
5,8
6,8
3,1-1,6 4,3-2,1 4,9-2,5
LOAD PROFILE
M
L
L
XL
XL
DAILY ELECTRICITY
CONSUMPTION
[kWh]
6,23 12,12 11,96 19,74/19,67 19,23
MIXED WATER
V40 [l]
133,17 156,44 235,47 309,66 418,23
Table 1
MODEL
OKCE 300
S/1MPa
OKCE 400
S/1MPa
OKCE 500
S/1MPa
OKCE 750
S/1MPa
OKCE 1000
S/1MPa
Capacity [l] 314 395 455 750
1000
WEIGHT [kg] 82 103 121 162
211
TANK OPERATING
PRESSURE [MPa]
1
MAX HEATING
WATER
TEMPERATURE (°C)
90
HEATING TIME
FRTOM 10
℃
to 60°C
[h]
depending on selected power input of in-built heating unit
LOAD PROFILE XL XXL XXL
DAILY ELECTRICITY
CONSUMPTION
[kWh]
20,09 25,6 25,58
MIXED WATER V40
[l]
419,08 521,89 640,08
Table 2

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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 55oC (setting to position “ECO“) - Figure 19.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 ELECTRICAL INSTALLATION
2.2.1 ELECTRIC INSTALLATION FOR: OKCE 100 S/2.2 KW; OKCE 125 S/2.2 KW;
Perform the connection according to the scheme. Factory connection must not be changed! (Obrázek 8). In
the electric wiring casing remove the partition corresponding with the input wire diameter of φ8 or φ10
(Figure 7). The degree of protection of electric parts of the heater is IP 44. Power input of electric element
is 2,200 W.
Figure 7
Connection, repairs, and wiring inspections may only be implemented by a company (person) authorised to
such activity.
Expert connection must be confirmed on the warranty certificate.

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The heater is connected to the 230 V/50 Hz electric network using a fixed moving conductor with a switch
that turns off all network poles and the circuit breaker (protector).
Wiring diagram:
Figure 8
Flange lid fastening - 8 x M10
Figure 9
2.2.2 ELECTRIC INSTALLATION FOR:OKCE 160 S/2,2 KW, OKCE 160 S/3-6 KW, OKCE 200
S/2,2 KW, OKCE 200 S/3-6 KW, OKCE 250 S/2,2 KW, OKCE 250 S/3-6 KW, OKCE
300 S/1 MPA ,OKCE 400 S/1 MPA, OKCE 500 S/1 MPA
Water heater is equipped with universal electrical heating unit with either fixed or optional power of
heating elements (apart from OKCE 300 S/1 MPa). The heating unit consists of a flange to which one or
three thermowells for ceramic heating units are welded, and a thermowell for regulation sensors (see
Figure 9, Figure 10, Figure 11). A unit is attached by either 8 M 10 screws with a 168 mm clearance or 12 M
12 screws with a 210 mm clearance. In the wiring plastic cover, there is a thermostat and a safety fuse;
heater operation control light; and a lead-in wire bushing.
The sensors must be inserted all the way in; first the thermostat and then the safety
fuse.

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The performance of heating unit may be adjusted based on either required heating time or connecting
possibilities of electric energy distribution in the place of use.
Parameters of an electric heating unit for: OKCE 160 S/2,2 kW,OKCE 160 S/3-6 kW, OKCE 200 S/2,2 kW,
OKCE 200 S/3-6 kW, OKCE 250 S/2,2 kW, OKCE 250 S/3-6 kW
Type
Performance
(kW) Voltage (V/Hz)
Build-up
length l
(mm)
IP
Protection
Weight
(kg) Mounting
TPK 168 - 8/2.2 kW 2,2 1 PE-N ~ 230 V/50 Hz 405 IP 44 5 8 x M10
Table 3
For: OKCE 300 S/1 MPa – the heating element has to be additionally purchased
Type
Performance
(kW) Voltage (V/Hz)
Build-up
length l
(mm)
IP
Protection
Weight
(kg) Mounting
TPK 210 - 12/2.2 kW
2,2
1 PE-N ~ 230 V/50 Hz
440
IP 44
9
12 x M12
TPK 210 - 12/3-6 kW
3 - 4 - 6
3 PE-N ~ 400 V/50 Hz
440
IP 44
15
12 x M12
TPK 210 - 12/5-9 kW
5 - 7 - 9
3 PE-N ~ 400 V/50 Hz
550
IP 44
18
12 x M12
TPK 210 - 12/8-12 kW
8 - 10 - 12
3 PE-N ~ 400 V/50 Hz
550
IP 44
18
12 x M12
Table 4
After the heater is connected to electric network, the heating element starts heating water. The element is
turned on and off by a thermostat. The thermostat may be set from 5°C to 74℃.We recommend that the
sanitary water temperature is set to the maximum of 60°C. This temperature ensures optimum operation
of the heater since thermal losses are reduced, and electricity saved. 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 (light is on) or if it is off (the light goes out).
If the tank is out of service for longer time, the thermostat can be set to the
“snowflake” symbol in winter period to avoid its freezing, or the power supply to the
heater can be switched off.
Connection, repairs, and wiring inspections may only be implemented by company
(person) authorised to such activity. Qualified installation must be acknowledged in
the warranty certificate.
Installations in bathrooms, laundry rooms, rest rooms and showers must be in
compliance with applicable standard.
Adhere to the protection against electric shock injury according to applicable
standard.
The heater is connected to the electric network using a solid moving conductor with a switch that turns off
all network poles and the circuit breaker (protector).
The degree of protection of electric parts of the heater is IP 44.

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Heating unit - flanges
OKCE 160 S/2.2 kW; OKCE 200 S/2.2 kW; OKCE 300 S/1 MPa
OKCE 250 S/2.2 kW
TPK 168-8/2.2 kW TPK 210-12/2.2 kW
Mounting 8 x M10 Mounting 12 x M12
Figure 10
Figure 1
OKCE 160 S/3-6 kW, OKCE 200 S/3-6 kW,
OKCE 250 S/3-6 kW, OKCE 300 S/1 MPa
TPK 210-12/3-6 kW
OKCE 300 S/1 MPa ,OKCE 400 S/1 MPa, OKCE 500 S/1 MPa
TPK 210-12/5-9 kW
TPK 210-12/8-12 kW
Fastening 12 x M12
Figure 12
Wiring scheme
Notice: Factory connection must not be changed! Cover of wiring with control
Heating unit 2.2 kW Thermostat Heater run indicator lamp
Figure 2Figure 14

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Heating unit 3-6 kW
The 3-6 kW heating unit allows 4 types of connection based on either required time of heating or
possibilities of electric network in the place of use.
TPK 3-6 kW R ~ 1 kW
To achieve chosen performance of the heating unit,
connect the inlet conductor to L1, L2, L3, and N terminal
board,
and interconnect the clips on the 1-10 terminal board in
accordance with the following schemes:
3 kW 1 PE - N AC 230 V / 50 Hz
3 kW 2 PE - N AC 400 V / 50 Hz
4 kW 3 PE - N AC 400 V / 50 Hz
6 kW 3 PE - N AC 400 V / 50 Hz
OKCE 300 S/1 MPa , OKCE 400 S/1 MPa, OKCE 500 S/1 MPa
TPK 210-12/5-9 kW
TPK 210-12/8-12 kW
TPK 5-9 kW R ~ 1 kW
TPK 8-12 kW R ~ 1,33 kW
TPK 5-9 kW
5 kW 3 PE - N AC 400 V / 50 Hz
7 kW 3 PE - N AC 400 V / 50 Hz
9 kW 3 PE - N AC 400 V / 50 Hz
TPK 8-12 kW
8 kW 3 PE - N AC 400 V / 50 Hz
10,5 kW 3 PE - N AC 400 V / 50 Hz
12 kW 3 PE - N AC 400 V / 50 Hz

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Type Performance Connection
Element lenght
( mm )
Weight (kg)
REU 18 - 2,5 2,5 1 PE-N AC 230 V / 50 Hz 450 3
RDU 18 - 2,5 2,5 3 PE-N AC 400 V / 50 Hz 450 3,3
RDU 18 - 3 33 PE-N AC 400 V / 50 Hz 450 3,4
RDU 18 - 3,8 3,8 3 PE-N AC 400 V / 50 Hz 450 3,5
RDU 18 - 5 53 PE-N AC 400 V / 50 Hz 450 3,5
RDU 18 - 6 63 PE-N AC 400 V / 50 Hz 450 3,5
RDW 18 - 7,5 7,5 3 PE-N AC 400 V / 50 Hz 450 3,7
RDW 18 - 10 10 3 PE-N AC 400 V / 50 Hz 450 4
RSW 18 - 12 12 3 PE-N AC 400 V / 50 Hz 530 4
RSW 18 - 15 15 3 PE-N AC 400 V / 50 Hz 630 4,2
SE 377* 8,0-11-16 3 PE-N AC 400 V / 50 Hz 610 8
SE 378* 9,5-14-19 3 PE-N AC 400 V / 50 Hz 610 11,5
*Only for 750 and 1000 litre boilers.
2.2.3 ELECTRIC INSTALLATION ONLY FOR:OKCE 300 S/1MPA, OKCE 400 S/1MPA ,
OKCE 500 S/1MPA, OKCE 750 S/1MPA, OKCE 1000 S/1MPA
Heating units use
Capacity
Flange size
Time of heating from 10°C to 60°C (hours)
L
mm
8
6
5
4
3
2,5
2
1,5
750
Flange ∅150
RDU 18-6RDW 18-7,5 RDW 18-10 RSW 18-12 RSW-18-15
Flange ∅225
SE 377-8
SE 378-9.5
SE 377-11
SE 378-14
SE 377-16
SE 378-19
1000
Flange ∅150
RDW 18-7.5
RDW 18-10
RSW 18 -12
RSW 18 -15
Flange ∅225
SE 377-8
SE 378-9.5
SE 377-11
SE 378-14
SE 377-16
SE 378-19
Capacity
Flange size
Time of heating from 10°C to 60°C (hours)
L
Mm
8
6
5
4
3
2,5
2
1,5
300
Flange ∅210
RDU 18- 2,5
RDU 18- 3
RDU 18-3,8
RDU 18-5
RDU 18-6
RDW 18-7,5
RDW 18-10
400
Flange ∅210
RDU 18- 3
RDU 18-3,8
RDU 18-5
RDU 18-6
RDW 18-7,5
RDW 18-10
RSW 18-12
RSW 18-15
500
Flange ∅210
RDU 18-3,8
RDU 18-5
RDU 18-6
RDW 18-7,5
RDW 18-10
RSW 18-12
RSW 18-15
Table 5
Electrical heating units REU, RDU and RSW can be by reduction flange 210/150 mounted in heaters of 300,
400 and 500 litre capacity.
Electrical heating units REU, RDU and RSW can be by reduction flange 225/150 mounted in heaters of 750
and 1,000 litre capacity.
Table 6
Capacity
Time of heating from 10°C to 60°C (hours)
l
8
6
4,5
3,5
3
2,5
2,1
1,8
1,6
1,4
300
TPK
210/2,2
TPK 210/3-
6
TPK 210/3-
6
TPK 210/5-
9
TPK 210/3-
6
TPK 210/5-
9
TPK 210/8 -
12
TPK 210/5 -
9
TPK 210/8-
12
TPK 210/8-
12
Connectio
n
2,2 kW 3 kW 4 kW 5 kW 6 kW 7 kW 8 kW 9 kW 10 kW 12 kW
Table 7
Capacity
Time of heating from 10°C to 60°C (hours)
l
11,3
8
6
4,7
4
3,4
3
2,6
2,4
2
400
TPK
210/2,2
TPK 210/3-
6
TPK 210/3-
6
TPK 210/5-
9
TPK 210/3-
6
TPK 210/5-
9
TPK 210/8 -
12
TPK 210/5 -
9
TPK 210/8-
12
TPK 210/8-
12
Connectio
n
.2.2 kW
3 kW
4 kW 5 kW 6 kW 7 kW 8 kW 9 kW 10 kW 12 kW
Table 8

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Capacity
Time of heating from 10°C to 60°C (hours)
L
14,1
9,8
7,5
6
5
4,2
3,7
3,3
3
2,5
500
TPK
210/2.2
TPK 210/3-
6
TPK 210/3-
6
TPK 210/5-
9
TPK 210/3-
6
TPK 210/5-
9
TPK 210/8-
12
TPK 210/5 -
9
TPK 210/8-
12
TPK 210/8-
12
Connectio
n
.2.2 kW
3 kW
4 kW 5 kW 6 kW 7 kW 8 kW 9 kW 10 kW 12 kW
Table 9
Reduction flange 210 / 150 Reduction flange 225 / 150
Figure 15
Figure 16
2.2.4 PLUMBING FIXTURE
Power water connects to pipes with ¾“ 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.
Each hot service water pressure heater must have a safety valve with a membrane spring.
Nominal clearance of safety valves is defined by standard. 300 l heaters are supplied
without the safety valve. The safety valve must be easily accessible, as close to the heater as
possible. The inlet pipes must have at least the same clearance as the safety valve. Safety
valve is placed high enough to secure dripping water drain by gravity. We recommend
mounting the safety valve onto a branch pipe. This allows easier exchange without having to
drain the water from the heater. Safety valves with fixed pressure settings from the
manufacturer are used for the assembly. The starting pressure of the safety valve must be
identical to the maximum allowed heater pressure, and at least 20 % higher than the
maximum pressure in the water main (Table 10). If the water main pressure exceeds such
value, a reduction valve must be added to the system. No stop valves can be put between
the heater and the safety valve. During assembly, follow the guide provided by the safety
equipment manufacturer.

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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. When draining the
heater, use the recommended drain valve. First, close the water supply into the heater.
Find necessary pressure values in the below Table 10. For proper safety valve operation, a backflow valve
shall be mounted on the inlet pipes, preventing spontaneous heater draining and hot water penetrating
back into the water main. We recommend that the hot water distribution from the heater was as short as
possible to minimise heat losses. At least one demountable joint must be mounted between the tank and
every supply pipe.
Adequate piping and fittings with sufficiently dimensioned maximum temperature and pressure values
must be used.
Water 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
START-UP
PRESSURE
[MPa]
ALLOWABLE
OPERATING
OVERPRESSUR
E 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 0.8
Table 10
2.3 FURTHER INFORMATION
300-1000 litre capacity heaters are screwed onto the bottom wooden palette with M12
screws. When the heater is released from the palette and prior to its putting into operation,
3 adjustable legs supplied as the product accessories have to be installed. With these legs,
the heater may be positioned vertically to the base, within 10 mm.

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2.4 FIRST COMMISSIONING
After connecting the heater to the water main, electrical power system, and after checking the safety valve
(following the instructions attached to the valve), the heater can be put into operation.
Procedure:
a) check the water main and wiring; Check proper placement of thermostat sensors. The sensors in
the well must be inserted all the way in; first the operating and then the safety thermostat;
b) open the hot water valve on the combination faucet;
c) open the cold water inlet valve to the heater;
d) when the water starts flowing through the hot water valve, the filling of the heater is finished and
the valve needs to be closed;
e) if a flange lid leak is discovered, the flange lid bolts need to be tightened;
f) fasten the electric installation cover;
g) when the heater starts operate, flush the tank until the cloud disappears;
h) make sure to fill in properly the warranty certificate.
Cold Water Inlet Scheme
Figure 17