Kospel EKCO.L1 z User manual

1
KOSPEL S.A. KOSZALIN ul. Olchowa 1
SERVICE
MANUAL
EKCO.L1 z
EKCO.L1N z
EKCO.L1 p
EKCO.L1N p
EKCO36.L1
EKCO36.L1N
01
16.06.2010

Service Manual
2
Contents
1. Front view 3
Pic.1a EKCO.L1 z, EKCO.L1 p, EKCO36.L1 3
Pic.1b EKCO.L1N z, EKCO.L1N p, EKCO36.L1N 3
2. Front panel handling 5
Pic.2 Control panel PSK.P4 5
3. Connecting (interconnect) board ZIO-21 6
Pic.3 ZIO-21 (interconnect) connecting board 6
4. Failures 7
Table of faults for EKCO.L1 (PSK.P4) 7
5. Boiler construction 8
Pic.4a Boiler EKCO.L1 z, EKCO.L1 p, EKCO36.L1 8
Pic.4b Boiler EKCO.L1N z, EKCO.L1N p, EKCO36.L1N 9
6. Heating box 10
Pic.5 Heating box 10
7. Power board 10
Pic.6 Power board 10
8. DHWT connection chart 11
Pic.7 Example of three way valve connection 11
9. Cascade unit for a heating system with two or more heating boilers 12
Pic.8 Cascade heating system for direct supply 12
Pic.9 Cascade heating system for the separating system with the hydraulic clutch 12
Pic.10 PSK.M2 (master) and PSK.P4 (slave) connecting diagram 13
10. Wiring system 14
Pic.11 Ver. I EKCO.L1 12kW, 15kW, 18kW, 21kW, 24kW. 30kW, 36kW / 400V 14
Pic.12 Ver.II EKCO.L1 4kW, 8kW, 6kW / 400V 15
Pic.13 Ver.III EKCO.L1 4kW, 8kW, 6kW / 230V 16
11. Simplified schema of internal connections 17
Pic.14 Simplified schema of internal connections 18
11. Boiler component parts list 19
12. Technical data 20

3
1. Front view
Pic.1a EKCO.L1 z, EKCO.L1 p, EKCO36.L1 Pic.1b EKCO.L1N z, EKCO.L1N p, EKCO36.L1N

Service Manual
4
Failure modes of PSK.P4 front panel.
Simultaneous blinking of all indicators means that one (or both) temperature sensors failed or are disconnected.
By using the right arrow the one could review the return or flow temperature. If the main indicator shows E replace the
adequate temperature sensor. In case of return temperature sensor failure the boiler will run in the failure mode and the
heating temperature will be computed by using difference between main temperature settings and the supply temperature.
Detection of the supply temperature sensor failure blocks the heating of the boiler.
2. Control panel settings
PSK.P4 front panel service mode configuration.
To set the service modes turn off the boiler by pressing and holding the power button. Then press and hold the right
arrow button and simultaneously press the power button. Use the upper and lower arrow buttons to change the parameter
value or mode. Use the right arrow button to move to the next parameter.
Parameter Display Description
Circulating pump mode
PA Automatic mode
Pr Continuous working mode
Power board G1 ÷ G6 Number of supplying heating elements
Temperature ranges
Po Floor heating type 30-60°C
(with no possibility to heat the DHWT)
no Standard type 40-85°C
Three phase mains supply
symmetry
3F No symmetry detection
3F. Symmetry detection is active. The K indicator is ON. The boiler stops heating the system if phase is missing
Cascade mode
r0 Separate standard mode
r1 Cascade working mode
Boiler identification number A1 ÷ A8 Set the A number exclusively to identify each boiler.
Position A1 boiler no 1 ... A8 boiler no 8
DHWT loading temperature value
0Heating of the DHWT is blocked.
The DHWT indicator is off.
50 ÷ 85 DHWT temperature range.
The DHWT indicator is on.
Power of the heating box 1 - 36, indicator
'kW' lits
Set the proper number according to the power of the heating box
and the number of active heating elements
All the settings are stored automatically. After settings are changed turn off device by pressing and holding the power button
for 3 sec. Then turn the boiler on again. The boiler will work with the new settings.
Table 1.

5
Pic.2 Front panel PSK.P4
NA – superior device
Tin – return temperature sensor socket
Tout - supply temperature sensor socket
Q – flow sensor socket
ZM - I2C power module socket
IN OUT
A - heat exchanger indicator
B - pump and flow indicator
C - heating on and room thermostat indicator
D - inlet temperature indicator
E - outlet temperature indicator
F - medium temperature setting indicator
G, H, I - measurement value indicators
J - LCD display
K - temperature of water in the heat exchanger indicator
symmetry error indication
L - switches

Service Manual
6
3. ZIO-21 board
Pic.3 ZIO-21 board
LUB LUB
white
yellow
black
brown
blue
red
blue
yellow
ZIO power supply
PUMP
red
blue
Tzas – DHWT water electronic temperature sensor DS-1820
WZ – DHWT thermostat
RP – jumper or room thermostat
NA - jumper or superior device
ZAS – three way valve
ZM – power module (ribbon cable)
I2C - PSK.P4 cable (ribbon cable 5 pin)
X.NA - PSK.P4 cable (ribbon cable 2 pin)
MR – radio controlled room thermostat receiver
F1 - 1 A fuse (pump protection)
F2 - 160 mA fuse or polymer fuse (ZIO protection)
JUMPER JUMPER
OR OR

7
4. Failures
Symptoms Reason Operation
Front panel indicators are off. Power supply failure.
Check the mains and the main fuses.
Check the WT-3 temperature cut-off.
Check the F2 fuse on ZIO-21 board.
Replace the control panel.
K indicator is blinking.
Asymetric mains supply
(only three phase boilers).
Check mains and the main fuses.
Check the WT-3 temperature cut out.
No transmission to ZIO board
Check the connection between power module and
the ZIO 21 board.
Replace power board.
Replace ZIO-21 board.
B indicator is blinking.
The flow value is „0” or is to low.
(below value of 5 l/min)
Heating is blocked.
Check the F1 pump fuse on ZIO21 board.
Air lock in the heating system, solve the problem.
Deaerate the pump and the heating system.
Circulating pump is blocked.
Circulating pump is blocked. Make a manual pump
run. Use the screw to rotate the rotor.
Replace pump.
Flow sensor failure. Replace flow sensor.
Room thermostat heating start heating
and the C indicator on the
control panel is not off.
The room thermostat wiring connection
failure. Check the room thermostat wiring connection.
Room thermostat failure. Replace room thermostat.
ZIO 21 failure. Replace ZIO 21 board.
The supply temperature is too low. The heating box failure. Change the heating box.
The A indicator is on
The boiler is heating only central heating
The three-way valve failure Check the servo. Replace the servo of valve
ZIO 21 failure Replace ZIO 21 board
Mains problem Check the F1 fuse. Check the mains.
DHW temperature is too low.
The boiler is heating only the heating
system.
The A indicator is off
The DHWT thermostat or DHWT electronic
Sensor (DS 1820) failure
Replace DHWT thermostat or electronic sensor
(DS 1820)
ZIO 21 failure Replace ZIO 21 board
Too low DHWT temperature settings
Set the higher temperature on the DHWT
thermostat or rise the DHWT temperature on the
control panel (for the electronic sensor DS 1820)
The supply temperature is too low Heating box failure Check or replace heating box.
The NA connector is opened by the
superior device.
The C indicator does not blink
RP connector opened Check the room thermostat
Control panel failure PSK.P4 Replace front panel
Control panel indicators are blinking or
temperature indicator is blinking or the return or
supply temperature indicator is showing 99OC.
Return or supply temperature sensor.
Use the right arrow to view the return inlet and
flow outlet temperature. If the „E” symbol or 99 is
displayed replace the required sensor.
(Nominal resistance of the temperature sensor
10kΩ at 25OC).
Control panel failure Replace the front panel PSK.P4
Table 2. EKCO.L1/EKCO36.L1 (PSK.P4)

Service Manual
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5. Boiler construction
11 - 01010 14 - 00936 24 -00516 / 00489 26 -00001
1 - Table
page 10
42
00373
42
00373
22 -Table
page 18
41 - 00272
16 - Table page 18
45 -00115
42 - 00373
41 - 00272
41 - 00272
3 - 00863
45 - 00115
23 - 00144
21- Table page 18
25 - 00035
27 - Table page 18
44 - 00647
42 - 00373
29 - 00492
42 - 00373
17 - Table
page 10
42
00373
44 - 00647
44 - 00647
19 - 00790 20 - 00791
Tout
Tin
10 - 00786
41 - 00272
44 - 00647
Pic.4a Boiler EKCO.L1, EKCO.L1p, EKCO36.L1

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Pic.4b Boiler EKCO.L1Nz, EKCO.L1Np, EKCO36.L1N
28 - 00853
22 - Table
page 18
21 - Table page 18
12 - 00784
10 - 01252
41 - 00272
41 - 00272
42 - 00373
42 - 00373
42 -00373
9-01251
Note: Only parts that differs from EKCO.L1 are shown separately

Service Manual
10
Automatic air vent
Return connection
Supply connection
Top view
Heating elements layout
Side view
6. Heating box
Pic.5 Heating box
Pic.6 Power board
7. Power board
Boiler type Service
code
Heating
box type
Amo-
unt of
he-
ating
ele-
ments
Rel
Heating element
resistance
[Ω]
If
Heating supply current
[A]
U
heating
element
supply
voltage
[V]
EKCO.L1F-4 01022 ver.12 6 74,20 ÷ 82,00 2,80 ÷ 3,10
230V
EKCO.L1F-6 01024 ver.18 6 49,40 ÷ 54,70 4,20 ÷ 4,70
EKCO.L1F-8 01026 ver.24 6 37,10 ÷ 41,00 5,60 ÷ 6,20
EKCO.L1-4 01022 ver.12 6 74,20 ÷ 82,00 2,80 ÷ 3,10
EKCO.L1-6 01024 ver.18 6 49,40 ÷ 54,70 4,20 ÷ 4,70
EKCO.L1-8 01026 ver.24 6 37,10 ÷ 41,00 5,60 ÷ 6,20
EKCO.L1-12 01022 ver.12 6 74,20 ÷ 82,00 4,80 ÷ 5,40
400V
EKCO.L1-15 01023 ver.15 6 59,30 ÷ 65,60 6,00÷ 6,80
EKCO.L1-18 01024 ver.18 6 49,40 ÷ 54,70 7,30 ÷ 8,10
EKCO.L1-21 01025 ver.21 6 42,40 ÷ 46,00 8,60 ÷ 9,50
EKCO.L1-24 01026 ver.24 6 37,10 ÷ 41,00 9,70 ÷ 10,80
EKCO36.L1-30 01160 ver.30 6 33,16 ÷ 35,08 11,40 ÷ 12,06
EKCO36.L1-36 00903 ver.36 6 28,16 ÷ 32,84 12,18 ÷14,20
EKCO.L1F-4 01027 ver.12 6 68,08 ÷ 75,24 2,90 ÷ 3,30
220V
EKCO.L1F-6 01029 ver.18 6 44,50 ÷ 49,18 4,40 ÷ 5,00
EKCO.L1F-8 01031 ver.24 6 33,21 ÷ 36,71 5,90 ÷ 6,70
EKCO.L1-4 01027 ver.12 6 68,08 ÷ 75,24 2,90 ÷ 3,30
EKCO.L1-6 01029 ver.18 6 44,50 ÷ 49,18 4,40 ÷ 5,00
EKCO.L1-8 01031 ver.24 6 33,21 ÷ 36,71 5,90 ÷ 6,70
EKCO.L1-12 01027 ver.12 6 68,08 ÷ 75,24 5,00 ÷ 5,60
380V
EKCO.L1-15 01028 ver.15 6 54,46 ÷ 60,20 6,30 ÷ 7,00
EKCO.L1-18 01029 ver.18 6 44,50 ÷ 49,18 7,70 ÷ 8,60
EKCO.L1-21 01030 ver.21 6 37,95 ÷ 41,95 9,00 ÷ 10,10
EKCO.L1-24 01031 ver.24 6 33,21 ÷ 36,71 10,30 ÷ 11,50
EKCO.L1F-9 01032 ver.F9 6 35,80 ÷ 39,50 6,00 ÷ 6,80
240 V
EKCO.L1F-12 01033 ver.F12 6 26,80 ÷ 29,60 8,10 ÷ 9,00
EKCO.L1F-14.4 01034 ver.F14.4 6 22,40 ÷ 24,70 9,70÷ 10,80
Boiler type Service code
EKCO.L1F-4
01013
EKCO.L1F-6
EKCO.L1F-8
EKCO.L1F-9
01014EKCO.L1F-12
EKCO.L1F-14,4
EKCO.L1-4
01012EKCO.L1-6
EKCO.L1-8
EKCO.L1-12
01011
EKCO.L1-15
EKCO.L1-18
EKCO.L1-21
EKCO.L1-24
ECKO36.L1-30 00904
EKCO36.L1-36
niebieski
¿ó³ty
czerwony
niebieski
blue
blue
yellow
red
Table 3
Table 2

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8. DHWT electric connection chart
The VCZMH600E is an example of the three-way valve for the DHWT and central heating systems separated. The
valve should come together with the VC6012ZZ00 servo and the 45900445-013B wire. Switching of the valve requires
230V mains connnection to be applied to brown or black wire. The blue wire should be connected to the mains neutral
connector. By supplying voltage to the brown wire of the A/B the A way will be open. The voltage connecton to black
wire will open A/B to B way. The A/B, A and B indicates appropriate ends of the valve.
Pic.7 An example of three-way valve and temperature sensor connections to ZIO 21 board.
If the A/B valve connector is connected to the boiler supply outlet then “A” will supply central heating system and the
“B” DHWT system.
DS 1820 DHW temperature sensor should be to “Tzas” connector (white wire to “+” and yellow to “-“). If the DHW tank
has the thermostat then connect it's wires to WZ connector (voltage free).
Pic.7 An example of three-way valve connection and DHWT temperature sensor or thermostat
DS 1820
Termostat
00867
Thermostat
white
yellow
black
brown
blue

Service Manual
12
Cascade system enables possibility to increase maximum power output by parallel connection of several boilers. Cascade
system uses the EKCO.M1 as master boiler and up to 8 Slim boilers as slaves. This system is controlled by one main control panel
with the weather controlling system. All the Slim boiler settings are managed by the master boiler. The heating system temperature is
calculated on the base of outside temperature. The operating power is calculated on the base of flow and return and supply tempe-
ratures.
Boilers should be connected according to Tichelmann schema. By using this schema the flow will be equal and power will
be set to equal. Each of the supply connectors of the boiler should be equipped with the return valve to prevent back flow. On the
return pipe mechanical filter with the magnetic cartridge should be installed. When the system heats more then one heating system
with individual pump boilers should be separated by the hydraulic clutch.
Pictures below show some examples of cascade systems connections.
9. Cascade unit for a heating system with two or more
heating boilers .
Pic. 8 Direct supply boilers heating system and the DHW tank. The wide heating system it may turn out that the internal pumps parameters are too
low. In such conditions please install an external circulating pump PO*. If the thermostat valves are installed on the radiators the bypass pipe
system should included in the pipe system.
Pic. 9 Heating system with separated supply boilers equipped with the hydraulic clutch (SH). Each of the heating system is supplied with the pump
(PO). The master boiler regulates the temperature in up to two heating systems. If more heating systems are supplied that are loaded with
the equal or lower temperature system should be supplied with the independent temperature regulated systems.
CTP - room temperature sensor ZP – by-pass valve
CTZ – outside temperature sensor ZT – radiator valve with thermostatic head
TZ – DHW thermostat ZZ – no-return valvey
NW – expansion vessel ZR – regulating valve
RW – expansion pipe ZU – drain valve
PO – circulating pump ZM – mixing valve
F – filter ZTD – three-way valve
SH – hydraulic clutch ZO – deaerate valve

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Control panel settings
PSM.M2
Set the “Nr” to the definite number of boilers
PSK.P4
In service menu switch from "r0” to “ r1 “ and the position “A1” to the adequate identification number which will be simply recogni-
sed as unique. For every boiler an unique "A" number must be assigned.
Cascade mode
PSM.M2
In the main menu the power output is shown as a sum of power outputs of all boilers.
On the page “Heating data” each of the boilers has its own parameters information. Master boiler has number 0. To switch the
preview of other boilers press the upper or lower arrow. The additional information is the data transmission time. If the boiler will
not answer in more then 255 seconds the “kocioł nie odpowiada” message will appear.
Switching off the master boiler will also switch off all the slave boilers
PSK.P4
The master control panel controls all the slave boilers panels therefore temperature settings cannot be changed individually on
PSK.P4 panel. Each of the slave boilers can be switched off separately. If the PSK.P4 control panel has not confirmed transmis-
sion to PSK.M in more then 60 seconds all the indicators start to blink and heating of this particular boiler will be stopped.
If the master boiler sends an order to stop heating minus symbol will appear on display of adequate boiler.
Install all boilers and connect mains as pictured in manual. The slave boilers should be connected to the master by two
wires connected to the control panel as in pic. 10. Use the twin wire LIYY 2x0.14. Use this wire to make a series of connections of
A and B connectors in all boilers. Order or direction of connections is not important. Do not make the ring connections!
Pic.10 PSK.M2 (master) and PSK.P4 (slaves)
To next boiler
PSK.P4 panel
PSK.M2 panel

Service Manual
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10. Wiring diagram
Pic.11 Ver. I EKCO.L1, EKCO.L1N 12kW, 15kW, 18kW, 21kW, 24kW, 30kW, 36kW.
E1 - heating box M1 - Circulating pump F1 - WT-3 safety cut-off A1 - Front panel BV - flow sensor A2 - Power board T1 - inlet temperature sensor K - Capillary WT-3 T2 - inlet temperature sensor A3 - ZIO-21 board
superordi-
nated
signal
room
thermostat
DHW
thermostat
DS 1820
temperature
sensor
PUMP

15
Pic.12 Ver.II EKCO.L1, EKCO.L1N 4kW, 6kW, 8kW.
IN OUT
E1 - heating box M1 - Circulating pump F1 - WT-3 safety cut-off A1 - Front panel BV - flow sensor A2 - Power board T1 - inlet temperature sensor K - Capillary WT-3 T2 - inlet temperature sensor A3 - ZIO-21 board
superordi-
nated
signal
room
thermostat
DHW
thermostat
DS 1820
temperature
sensor
PUMP

Service Manual
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Pic.13 Ver.III EKCO.L1F, EKCO.L1NF 4kW, 6kW, 8kW.
IN OUT
E1 - heating box M1 - Circulating pump F1 - WT-3 safety cut-off A1 - Front panel BV - flow sensor A2 - Power board T1 - inlet temperature sensor K - Capillary WT-3 T2 - inlet temperature sensor A3 - ZIO-21 board
superordi-
nated
signal
room
thermostat
DHW
thermostat
DS 1820
temperature
sensor
PUMP

17
G1
X.NA
ZM U N
PUMP
W N U
Tzas W Z R P N A
N LA LB
I2C
DS
1820
Room
thermostat
External
switch off
DHWT
ZIO 21
white -
yellow +
Or
jumper
Or
jumper
yelow
N blue
LA brown
LB black
blue
blue
red
red
G6 G4 G2
G5 G3
U V W
ZM 43
NA Tin Tout QI2C
PSK P4
Three way valve
servo
Heating
box
A/B
A
B
Thermostat
or
NO
NO NC
B A
Parallel boiler connection
2X 0.5 to PSK.M
11. Simplified schema of internal connections.
Pic.14 Simplified schema of internal connections

Service Manual
18
12. Parts list.
pos. service code picture no description
Amount (pcs.)
notice
EKCO.L1
EKCO.L1N
EKCO36.L1
EKCO36.L1N
1
01022 EKCO.L-01.00.00a/5 Heating box 12 / 400V
1 1
01023 EKCO.L-01.00.00a/4 Heating box 15 / 400V
01024 EKCO.L-01.00.00a/3 Heating box 18 / 400V
01025 EKCO.L-01.00.00a/2 Heating box 21 / 400V
01026 EKCO.L-01.00.00a/1 Heating box 24 / 400V
01032 EKCO.L-01.00.00a/14 Heating box 9 / 240V
01033 EKCO.L-01.00.00a/13 Heating box 12 / 240V
01034 EKCO.L-01.00.00a/12 Heating box 14,4 / 240V
01160 EKCO36.L-01.00.00a/4 Heating box 30 / 400V 1 1
00903 EKCO36.L-01.00.00a/3 Heating box 36 / 400V
2
3 00863 CZP-00.00.00 Flow sensor 1 1 1 1
4
5
701016 EKCO.L-03.02.00 Front cover EKCO.L1 / EKCO36.L1 1 1
01017 OK.B3-02.00 Front cover EKCO.L1N / EKCO36.L1N 1 1
8 00786 EKCO.L-03.01.00 Base EKCO.L / EKCO36.L1 1 1
9 01251 OK.B3-01.00 Back base EKCO.L1N / EKCO36.L1N 1 1
10 01252 OK.B3-02.00a Front base EKCO.L1N / EKCO36.L1N 1 1
11 01010 EKCO.L-14.00.00a ZIO-21 board 1 1 1 1
12 00784 EKCO.LN-17.00.00 Expansion vessel pipe 1 1
13 00661 EPCO.M-16.00.00 Manometer pipe 1 1 1 1
14 00936 PSK.P4-00.00.00 Front panel PSK.P4 1 1 1 1
15
16 01107 EKCO.L-09.00.00a Power board connection pipe 1 1
01158 EKCO36.L1-09.00.00a Power board connection pipe 1 1
17
00904 EKCO36.L-10.00.00a Power board EKCO.L1 type ”36kW” 1 1
01011 EKCO.L-10.00.00a/I Power board EKCO.L1 type ”I”(12-24)
1 1
01012 EKCO.L-10.00.00a/II Power board EKCO.L1 type ”II”(4-8)
01013 EKCO.L-10.00.00a/III Power board EKCO.L1F type”III”(4-8)
01014 EKCO.L-10.00.00a/IV Power board EKCO.L1F type ”IV”(4-8)
18
19 00790 WE-005/02 Temperature sensor Tin 1 1 1 1 sensor resistance 10kΩ at temperature 25°C
20 00791 WE-005/01 Temperature sensor Tout 1 1 1 1 sensor marked with red colour sensor
resistance 10kΩ at temperature 25°C
21
01254 EKCO36.L-04.00.00a Inlet connection pipe EKCO36.L1 1
01255 EKCO36.LN-18.00.00a Inlet connection pipe EKCO36.L1N 1
01018 EKCO.L-04.00.00a Inlet connection pipe EKCO.L1 1
01020 EKCO.LN-04.00.00a Inlet connection pipe EKCO.L1N 1
01019 EKCO.L-18.00.00a Inlet connection pipe UK ver. 1
01021 EKCO.LN-18.00.00a Inlet connection pipe UK ver. 1
22
01256 EKCO36.L-06.00.00 Outlet connection pipe EKCO36.L1 1
01256 EKCO36.LN-19.00.00 Outlet connection pipe EKCO36.L1N 1
00919 EKCO.L-06.00.00 Outlet connection pipe EKCO.L1 1
00921 EKCO.LN-08.00.00 Outlet connection pipe EKCO.L1N 1
23 00144 Safety valve 3 bar 1 1 1 1
24
00516 WT3-00.00/2
WT3 safety cut-out 1 1 1 1
t=100°C
00489 WT3-00.00/3 underfloor heating t=75°C
00879 WT3-00.00/5 t=100°C I=55A EKCO36.L1
Table 4

19
25 00035 Manometer M53-0..0,4 Mpa 1 1 1 1
26 00001 Automatic air-vent G1/2” 1 1 1 1
27 00225 Pump (UPS 15-50 130 lub RS 15/5-3) 1 1
00506 Pump (UPSO 15-70 130 9H) 1 1
28 00853 Expansion vessel (CP387 G1/2” 6L) 1 1
29 00492 EPCO.M-04.00.00 Pump connection pipe 1 1 1 1
30
35
36
37
38
39
40 00253 Gasket 1,5x14,8x8 1 1 1 1
41 00272 Gasket 1,5x18,2x11,7 5 5 5 5
42 00373 Gasket 1,5x20x13 3 4 3 4
43
44 00647 Gasket 2x30x21 2 2 2 2
45 00115 Z-010A/00/0-1 Pipe union 5/8"x1/2" 1 1 1 1

Service Manual
20
13. Technical data.
Max.pressure MPa 0,3
Min.pressure MPa 0,05
Outflowing water temp. °C 40 ÷ 85 (30 ÷ 60)*
Max. water temp. °C 100
Overall dimensions mm EKCO.L1 660 x 380 x 175 EKCO.L1N 700 x 425 x 285
Weight kg EKCO.L1 ~16 EKCO.L1N ~24
Water connection G 1/2"
Expansion vessel (in EKCO.L1Nz only) l 6
Safety class IP 21
Boiler type EKCO.L1Fz, EKCO.L1NFz
4 6 8 6 9 12 14,4
Rated power consumption kW 4 6 8 6 9 12 14,4
Rated voltage 230V~ 240V~
Rated current A 17,4 26,0 34,8 25 37,5 50 60
Fuse rated current A 20 32 40 32 50 63 80
Min. connecting wires section mm23 x 2,5 3 x 4 3 x 6 3 x 2,5 3 x 6 3 x 10
Max. connecting wires section mm23 x 16 3 x 25
Boiler type EKCO.L1z, EKCO.L1Nz
4 6 8 12 15 18 21 24
Rated power consumption kW 4 6 8 12 15 18 21 24
Rated voltage 400V 3N~
Rated current A 3 x 5,7 3 x 8,7 3 x 11,7 3 x 17,3 3 x 21,7 3 x 26,0 3 x 30,3 3 x 34,6
Fuse rated current A 10 16 20 25 32 40
Mini. connecting wires section mm25 x 1 5 x 1,5 5 x 2,5 5 x 4 5 x 6
Max. connecting wires section mm25 x 16
*Relates to EKCO.p for underfloor heating
Table 5
Copiled by Paweł Wojtanowski
Copyright Kospel S.A.