Nibe EVC 13 User manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS
EVC 13
MOS GB 1538-2
EVC 13
511291
LEK
2
1bar 3
04
20 100
40 80
60
°C
0 120

English
Removing the cover
General
System description
4General
4Principle of operation
Front panel
5Heating curve offset
5Select heating curve
5Night reduction
5Indicator lamps
5Clock
5Fuse
5Switch
5Switch
6Boiler temperature
6Boiler pressure
Settings
7Heating control system
7Default setting
7Changing the room temperature
8Basic values for the automatic heating control
9Offset heating curve -2
9Offset heating curve 0
9Offset heating curve +2
9Setting after diagram
Clock
10Setting of time
10Programming of clock
10Night reduction
Monitoring and maintenance
11Max. thermostat
11Tariff control, (option)
11Safety valve
12Pressure gauge
12Temperature gauge
12Operating fuse
Rectifying any malfunctions
13Low room temperature
13No hot water
13High room temperature
14Emergency mode
14Resetting the temperature limiter
Pipe installation
15Transport and installation
15Connections
15Overflow pipe
15Tapping valve
15Circulation pump
15Pump and pressure drop diagrams
16Expansion vessel
16Max radiator volume
16Pressure controlled bypass valve
16Draining the boiler water
Electrical installation
17Connection
17Cable entry
17Switch
18Returning power/self-test
19Max thermostat/Temperature limitation
Commissioning and adjusting
20Filling
20Venting
20Secondary adjustment
Electrical circuit diagram
Component positions
26List of components
Dimensions
27Dimensions and setting-out coordinates
27Measuring principle
Accessories
28
Fuse and tariff kit for electrical supply of external electric
water heater
28Room sensor
Enclosed kit
Technical specifications
30Energy labelling
1EVC 13
Table of Contents

Removing the cover
LEK
LEK
LEK
LEK
1
2
EVC 132
English
Removing the cover

General
To get the ultimate benefit from your EVC 13, you should read through these Installation and Maintenance Instructions.
EVC 13 is intended for houses with waterborne heating. The electric boiler must be installed horizontally, ideally on
a cabinet type electric water heater, for example NIBE COMPACT.
The electric boiler is ready for centralised load control, has integrated load monitor and has accessory equipment for
tariff control of the electric water heater, which can be directly supplied direct from the boiler. The controls are con-
veniently located on the front panel and easy to see.
EVC 13 is a high quality electric boiler with a long service life, developed and made in Sweden for Swedish conditions.
Serial number* (103), must always be stated in all correspondence with NIBE.
089___________
Installation date
Installer
Setting "Power limiting"
Setting "Fuse size" (load monitor)
Setting "Max thermostat"
Setting "Temperature limiting"
Setting "Heating curve selection"
Setting "Offset heating curve"
Insert any notes here.
Datum__________________________ Sign___________________________
This appliance can be used by children aged from 8 years and above and persons with reduced
physical, sensory or mental capabilities or lack of experience and knowledge if they have been
given supervision or instruction concerning use of the appliance in a safe way and understand
the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance
shall not be made by children without supervision.
Rights to make any design or technical modifications are reserved.
©NIBE 2015.
3EVC 13
English
General

System description
General
EVC 13 has outdoor temperature controlled boiler temper-
ature, which is why a shunt valve is not needed. Outdoor
temperature sensor supplied. The power is connected and
disconnected using two contactors and two relays.
EVC 13 has an integrated circulation pump, expansion
vessel, safety valve, drain valve, load monitoring input for
centralised load control.
Current regulations require the heating installation to be
inspected before it is commissioned. The inspection must
be carried out by a suitably qualified person and should
be documented.
The above applies to electric boilers with a closed expan-
sion vessel. If the boiler or the expansion vessel is replaced,
the installation must be inspected again.
Principle of operation
Explanation
Outside sensorGT1
Boiler/supply temperature sensorGT2
Safety valve, boilerSÄV
Expansion vesselEXP
Tapping valveAV1
Shut-off valve, radiator circuit supply lineAV2*
Shutoff valve in radiator circuit return lineAV3*
Filler valveAV4
Pressure controlled bypass valveAV7
Circulation pumpCP
Immersion heaterEP
Heating control systemRC
Connection clockUR
Contactor tariff control of electric water heaterK2*
Bypass of tariff controlBR*
Miniature circuit-breaker groupSÄK*
Radiator circuitRAD*
*Not included in standard delivery
RAD*
P
GT1
SÄV GT2
CP
RC
Till VVB
EXP
AV1
AV3*
AV2*
EP
UR
Matning
EVC 13
Från tariffur
K1
K2* BR*
SÄK*
Utrustning för matning av yttre elvattenvärmare (tillbehör)
Vedenlämmittimeen
Syöttö
Tariffikellosta
K1
Laite ulkoisen vedenlämmittimen syöttöä varten (lisävaruste)
AV7
AV4
RAD*
P
GT1
SÄV GT2
CP
RC
EXP
AV1
AV3*
AV2*
EP
UR
AV5 AV6
EVC 13
K2* BR*
SÄK*
AV7
AV4
From Tariff clock
Equipment for supplying external electric water heater (accessory)
Supply
To HWH
EVC 13
EVC 134
English
System description

Front panel
D
a
y
15
12
24
21
618
R
3
9
15
O N O F F
2
1bar 3
0 4
20 100
40 80
60
°C
0 120
Indicator lamps
Night reduction
Boiler temperatureFuse
Switch
SwitchClock
Selection,
heating curve
Offset,
heating curve
Boiler pressure
Heating curve offset
This setting knob is used to increase or decrease the
heat, see section ・Changing the room temperat-
ure" on page 7.
Select heating curve
The setting depends on the geographical situation
and type of heating system. For correct setting, see
section ・Default setting" on page 7.
Night reduction
This setting knob is used to change the heating for
a certain time of the day. The change is connected
in and out according to the times set on the clock,
see also under "Switch"
Indicator lamps
■The top lamp lights when the immersion heater
is connected.
■The lower lamp is lit:
■When the electrical power is limited because
of overloaded main fuses.
■The first two hours after the boiler is started.
■During activated centralised load control if in-
stalled.
■Alternately flashing lamps mean that the outdoor
sensor is not correctly connected (short circuit or
open circuit).
Clock
The time for connecting and disconnecting of
"Night reduction" is set on the clock, see also under
"Switch"
Fuse
Fuse (2.5 A) for control, and circulation pump.
Switch
Three position switch.
Always day
Night reduction inactive.
Automatic
Clock controlled night reduction.
Always night
Night reduction permanently active.
Switch
The power switch has four positions:
■0: The boiler is completely switched off.
■1: Summer mode.
Only the clock and any tariff control for the
heater are operational.
■2: Heating mode.
Normal operating mode, all functions connected.
■3: Emergency mode.
This mode is used in the event of malfunctions.
The boiler/supply temperature is then governed
by the ”Max thermostat”. Circulation pump and
immersion heater are in operation.
The immersion heater is restricted to 6 kW. Any
water heater connected is powered up.
5EVC 13
English
Front panel

Boiler temperature
The gauge displays the present boiler temperature,
which is the same as the supply temperature.
Boiler pressure
The system/boiler pressure is shown here. The
gauge graduation is 0 – 4 bar. Normal pressure is
0.5 – 1.5 bar.
EVC 136
English
Front panel

Settings
Heating control system
The indoor temperature depends on several different
factors. During the warmer times of the year, solar radi-
ation and heat given off by people and equipment are
sufficient to keep the house warm. When it gets colder
outside, the heating system must be started. The colder
its gets, the hotter the radiators need to be.
D
a
y
15
12
24
21
618
R
3
9
15
O N O F F
2
1bar 3
0 4
20 100
40 80
60
°C
0 120
Night reduction
Select heating curve
Heating curve offset
This adjustment is made automatically, however the correct
basic settings must first be made on the boiler (see below).
Default setting
The basic heating is set with the “Heating curve selection”
knob and with the “Offset heating curve” knob. If you do
not know the correct settings use the basic data from the
map opposite. If the required room temperature is not
obtained, post adjustment may be necessary
NOTE
Wait one day between settings so that the temperat-
ures have time to stabilise.
Post-balancing adjustment of the default setting.
Cold weather conditions
If the room temperature is too low, increase the “Heating
curve selection” setting by one step clockwise.
If the room temperature is too high, reduce the “Heating
curve selection” setting by one step anti-clockwise.
Warm weather conditions
If the room temperature is too low, increase the “Offset
heating curve” setting by one step clockwise.
If the room temperature is too high, reduce the “Offset
heating curve” setting by one step anti-clockwise.
Changing the room temperature
Changing the room temperature manually
If you want to temporarily or permanently lower or raise
the indoor temperature relative to the previously set
temperature, turn the “Offset heating curve” knob anti-
clockwise or clockwise. One line approximately represents
a 1 degree change in room temperature.
Changing the room temperature with time controls
Use the "Night reduction" knob to increase or reduce the
room temperature at certain times of day. The start posi-
tion for this knob is 0. A change of one corresponds to
approximately 1 degree change in room temperature. The
change is active during the times that you have set on the
clock (see section“Programming of clock" on page 10).
NOTE
An increase in the room temperature may be ”inhib-
ited” by the radiator or under floor heating thermo-
stats, if so these must be turned up.
7EVC 13
English
Settings

Basic values for the automatic heating control
Skellefteå
Umeå
Örnsköldsvik
Sundsvall
Hudiksvall
Gävle
Stockholm
Visby
Luleå
Jönköping
Göteborg
Borås
Halmstad Markaryd
Helsingborg
Malmö
Växjö Kalmar
Linköping
Norrköping
Karlskrona
Ystad
Simrishamn
Örebro
Karlstad
Hässleholm
Uppsala
Västerås
Söderhamn
11 (5)
10 (5)
9 (5)
9 (4)
8 (4)
8 (4)
9 (4)
Gällivare
Östersund
Kiruna
Falun
9 (5)
11 (5)
12 (6)
Example
The values stated on the map apply for “Heating curve selection”.
The first value applies for low temperature radiator systems. If
you have a high temperature radiator system the stated value
should increase by 3 units. In both cases the “Offset heating
curve” is set to -2.
The value in brackets refers to under floor heating systems. In
this case the “Offset heating curve” is set to -1.
The map values are usually a good starting point and concern
an approximate room temperature of 20°C. The values can be
adjusted later if necessary.
Examples of default values selection
1. Houses with low temperature* radiator systems:
Markaryd = Area 10 (5). Set 10 on the ”Heating curve selec-
tion” knob and -2 on the ”Offset heating curve” knob.
2. Houses with high temperature** radiator systems:
Markaryd = Area 10 (5). Set 10+3=13 on the "Heating curve
selection" knob and -2 on the "Offset heating curve" knob.
3. House with under floor heating***.
Markaryd = Area 10 (5). Set 5 on the "Heating curve selection"
knob and -1 on the "Offset heating curve" knob.
* A low temperature radiator system refers to a system where the supply temperature
needs to be 55 °C on the coldest day..
** A high temperature radiator system refers to a system where the supply temperature
needs to be 70 °C on the coldest day.
*** Under floor heating can be dimensioned very differently. Example 3 above refers
to a system where the supply temperature needs to be approximately 35–40 °C on
the coldest day.
EVC 138
English
Settings

Offset heating curve -2
30
40
50
60
80
•C
- 40 •C- 10
0
10 - 20 - 30
15 14 13
11
10
9
8
7
6
5
4
3
2
1
- 5
+ 5
70
16171819 12
Offset heating curve
Outdoor temperature
Heating curve
Supply temperature
Offset heating curve 0
30
40
50
60
80
•C
- 40 •C- 10
0
10 - 20 - 30
15 14 13 12 11
10
9
8
7
6
5
4
3
2
1
- 5
+ 5
70
16171819
Offset heating curve
Outdoor temperature
Heating curve
Supply temperature
Offset heating curve +2
30
40
50
60
80
•C
- 40 •C- 10
0
10 - 20 - 30
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
- 5
+ 5
70
16171819
Offset heating curve
Outdoor temperature
Heating curve
Supply temperature
Setting after diagram
EVC 13 is equipped with an outdoor temperature con-
trolled heating control system. This means the boiler
temperature and therefore the supply temperature is
regulated in relation to the current outdoor temperature.
The relationship between outdoor temperature and supply
temperature is set with the “Offset heating curve” and
“Offset heating curve” knobs.
First, select "Offset heating curve". A suitable value for
under floor heating is -1 and for a radiator system -2.
The diagram is based on the dimensioned outdoor tem-
perature for the area and the dimensioned supply temper-
ature of the heating system. When these two values
“meet”, the heating control's curve coefficient can be read
off.
D
a
y
15
12
24
21
618
R
3
9
15
O N O F F
2
1bar 3
0 4
20 100
40 80
60
°C
0 120
Select heating curve
Heating curve offset
9EVC 13
English
Settings

Clock
Setting of time
NOTE
Setting is only necessary if automatic timing is re-
quired.
Resetting of clock
All programmed data in the clock can be erased by insert-
ing a pin in the hole (R) and pushing. This is usually done
at start-up/commissioning.
Setting of time
Press the button. The ON/OFF indicator on the clock's
LCD display will go out. Hold the button in, to advance
the hours. Release the button at the required hour. Set
the minutes by short presses on the button.
Set weekdays by pressing the “Day” button until the re-
quired weekday is set. Wait until the clock ON/OFF indic-
ator relights, 5 seconds after the button was last pressed.
When the correct time and day have been programmed,
the clock can be programmed for function, see program-
ming the clock.
D
a
y
15
12
24
21
618
R
3
9
15
O N O F F
2
1bar 3
0 4
20 100
40 80
60
°C
0 120
On/Off indication
relay status
Day/day button
Setting
hour/minute
Time activation
blue - night
yellow - day
Time
Time activation
for activated
clock function
Reset/
resetting
Weekday
Monday-Sunday
Manual
operation
15 minute key
Programming of clock
This programming is done to determine what times night
reduction is to be activated. The clock is programmed as
follows:
■Press the “Day” key until the day you want it shown in
the display.
■Program the desired time for night reduction by pressing
the buttons, which are placed around the clock display.
The numbers around the display indicate the 24 hours
of the day.
One press: Night reduction activated the full hour.
Two presses: Night reduction activated in the first half
hour.
Three presses: Night reduction activated in the second
half hour.
Four presses: Night reduction deactivated the full hour.
■Select a new day with the “Day” key, and repeat the
previous procedure.
■When programming is completed press the ”Day” button
for the current day.
The clock can also be programmed in 15 minute intervals.
Start by selecting the desired half hour where the 15
minute activation is desired. Press the same segment but-
ton again, and hold it in. By pressing the ”15” button in
this mode the desired 15 minute interval can be selected.
The clock can also be operated manually (not normally
used). This is done as follows:
■Press the button, and keep it pressed in or 3 seconds.
The relay will switch off and OFF will start to flash.
■Press the button and the relay will shift between on
and off, ON/OFF will flash all the time.
■To return to automatic press the button again and
keep it pressed for 3 seconds. ON/OFF indication will
now light constantly.
Night reduction
This setting is used to change the heating during certain
periods during the day and night.
Night reduction is activated by the timer. The mode is se-
lected using the switch (25).
The clock's programmed on/off determines the times
when the supply temperature should change to give a
change of room temperature. ON indicates night reduction
on. OFF indicates night reduction off.
If a reduction in the temperature is required, the value is
reduced using the “Night reduction” knob. If an increase
in the room temperature is required, the value is increased
using the "Night reduction" knob. The setting range is -10
to +10. One step change gives approx. 1 degree change
in the room temperature.
NOTE
NOTE! An increase in the room temperature may be
inhibited if the thermostats for the radiators or under
floor heating are set too low, if so these must be
turned up.
If you want to temporarily or permanently change the
room temperature the "night reduction" switch can be
used in addition to the manual on/off on the clock. The
button switches between ”Constant day", Constant night”
and ”Automatic” modes. See section "Front panel" on page
5.
EVC 1310
English
Clock

Monitoring and maintenance
Max. thermostat
To access the max thermostat and the breaker for the tariff
control the front hatch must be opened. The max thermo-
stat is set to limit the max boiler/supply line temperature
for the heating system. Suitable setting is approx. 10 °C
above the dimensioned supply temperature. This is espe-
cially important for under floor heating, to prevent damage
to the floor covering.
Tariff control, (option)
With the switch pressed so that the red marking is visible,
the external water heater is always powered via EVC 13
regardless of external control.
Safety valve
The front hatch must be opened to access the safety valve.
Turn the button anticlockwise and open the hatch.
Manually open and close (turn the knob a click anticlock-
wise) the safety valve approx. four times a year, at which
time check that a small amount of water flows out and
that the valve seals closed. After the checks, ensure that
the system has the required pressure. If necessary top up
with water. This is done using the hose via the drain valve
(51) or via the filler valve fitted by the installer, see the
section ”“Commissioning and adjusting” – “Filling".
Effekt-
begränsning
kW
Temperatur
begränsning
50°C
20 80
60
40
7030
97
11
13
5
5 35
30
10
25
20
15
Säkrings-
storlek (A)
11EVC 13
English
Monitoring and maintenance

Pressure gauge
The pressure gauge located
on the right hand part of the
front panel should display a
pressure between the pre-
pressure of the expansion
vessel (normally 0.5 – 1.5 bar).
2
1bar 3
0 4
If the pressure is too low, there
is a risk that not all the radiat-
ors will heat up. If the pressure
is too high, the safety valve
must release excess water. The
highest pressure is obtained
when it is coldest outdoors.
Water must be topped up
when necessary, see the sec-
tion ”Commissioning and ad-
justing” – “Filling”.
Temperature gauge
The temperature gauge loc-
ated on the right hand part of
the front panel displays the
present boiler/supply temper-
ature.
20 100
40 80
60
°C
0 120
Operating fuse
The boiler's circulation pump
and operating circuits are
fused by a 2.5A glass fuse. This
is accessible from the front of
the panel. If the fuse has
tripped, the cause must be es-
tablished and rectified before
the fuse is replaced.
EVC 1312
English
Monitoring and maintenance

Rectifying any malfunctions
Low room temperature
■Circuit or main MCB tripped.
■Tripped operating fuse, see section ”Operating fuse" on
page 12.
■Incorrectly set heat curve, see section ”Default setting"
on page 7.
■Tripped temperature limiter, see section "Resetting the
temperature limiter" on page 14.
■Air in the boiler/heating system.
■Circulation pump stopped.
■Max thermostat, or temperature limit, set too low see
section ”Max. thermostat" on page 11and ”Max thermo-
stat/Temperature limitation" on page 19.
■The power switch set to position 1 or in position 0.
■Air in the circulation pump.
■Too low capacity set on the circulation pump.
■Switch (25) set in position "Constant night”.
■Radiator thermostats/room thermostat set too low.
■The load monitor restricts part of the power because
there is too great a total load on the main fuse.
No hot water
When EVC 13 feeds an electric water heater, a lack of hot
water can be caused by one of the following:
■Circuit or main MCB tripped.
■Water heater blocked by tariff control, where applicable.
■High hot water consumption (especially during tariff
control).
■Tripped internal fuse (27) (only in cases of internal on-
ward supply to electric water heater).
High room temperature
■Incorrectly set heat curve, see section ”Default setting"
on page 7.
■Radiator thermostats/room thermostat set too high.
NOTE
The product's serial number should always be stated
with all correspondence with NIBE.
089___________
13EVC 13
English
Rectifying any malfunctions

Emergency mode
EVC 13 is equipped with an ”Emergency mode” (position 3) on
the operating mode switch, as an additional safety measure. This
mode can be used if the normal automatic controls do not work.
In this mode, the max thermostat controls the boiler/supply
temperature to the set value. Circulation pump and immersion
heater in operation. The immersion heater is limited to 6 kW.
Any water heater is supplied with power.
Effekt-
begränsning
kW
Temperatur
begränsning
50°C
20 80
60
40
7030
97
11
13
5
535
3010
25
20
15
Säkrings-
storlek (A)
Resetting the temperature limiter
If the temperature limiter has tripped, it is reset by pressing
the reset button, using a screwdriver or similar.
Effekt-
begränsning
kW
Temperatur
begränsning
50°C
20 80
60
40
7030
97
11
13
5
535
3010
25
20
15
Säkrings-
storlek(A)
Reset button
NOTE
If the cause of the malfunction cannot be located and
rectified using the above, a service must be requested.
EVC 1314
English
Rectifying any malfunctions

Pipe installation
Transport and installation
The electric boiler must be transported and stored dry.
EVC 13 is designed to be positioned on top of an electric
water heater of the NIBE COMPACT type. Ensure that any
anode in the water heater is accessible. For installation
and access for service, there must be space of approx.
30 cm above and approx. 60 cm in front of the boiler.
NOTE
EVC 13 must be installed horizontally, at least 50 cm
from the floor. To ensure sufficient ventilation for the
electric components, there must be an air gap of at
least 10 mm under the bottom plate of the boiler.
Connections
Pipe installation must be carried out in accordance with
current norms and directives. The boiler is equipped with
R20 connections, externally threaded. Shut off valves
should be installed outside EVC 13 to simplify any future
service.
NOTE
The pipe installation must be flushed, so that any
contaminants do not damage the equipment.
Overflow pipe
The overflow pipe must be routed according to current
norms and directives.
The overflow pipe from the safety valves must be routed
to a floor drain to prevent hot water splashes when
checking the valves or when bleeding the boiler. The outlet
of the overflow pipe must be visible.
When installing a NIBE COMPACT water heater, the over-
flow pipe for the electric boiler must be routed straight
down through the top panel of the water heater.
Tapping valve
EVC 13 is equipped with a drain valve (51) on the boiler
with a R15 ( 1/2” ) hose connection. To drain the boiler,
remove the cap for the valve and screw the hose connec-
tion into position. Open the drain valve. The safety valve
(52) is then set to the open position for air supply. The
drain valve for the radiator system must be located in a
suitable place.
Circulation pump
The boiler has a circulation pump located in the return
line. The pump capacity is set using the diagram. To pre-
vent cavitation in the pipes the flow must not exceed 1700
l/h.
Pump and pressure drop diagrams
0
0 500
Tillg ngligt tryck (Pa)
3000 3500
Flöde (l/h)
2000 2500
10
20
30
1000 1500
40
50
60
70
Max flöde: 1700 l/h
Available pressure circulation pump
kPa
Flow (l/h
Max flow:1700 l/h
15EVC 13
English
Pipe installation

Expansion vessel
The expansion vessel (85) volume is 12 litres and has a pre-pres-
sure of 50 kPa (0.5 bar) as standard. This means that the maxim-
um height (H) between the vessel and the highest situated radi-
ator is 5 m, see the figure to the side.
If the standard pre-pressure in the pressure vessel is not high
enough it can be increased by adding air via the valve in the ex-
pansion vessel. The pre-pressure of the expansion vessel must
be stated in the inspection document. Any change in the pre-
pressure affects the ability of the expansion vessel to handle the
expansion of the water.
If the heating installation has an open expansion vessel, the dis-
tance between the highest radiator and the expansion vessel
must not be less than 2.5 m.
H Min 2,5 m
Max radiator volume
Max permitted radiator volume is 150 litres at a pre-pressure of
0.5 bar.
Pressure controlled bypass valve
EVC 13 is equipped with a pressure controlled bypass valve (48).
This is to protect the circulation pump in installations where the
radiator flow can stop completely. When the radiator side is
closed the boiler water is circulated across the pump internally
in EVC 13.
Draining the boiler water
HUMMEL
Patent
!
WARNING!
Before draining the boiler water, cut the power sup-
ply.
The drain valve is used to drain the boiler of water. Un-
screw the protective cap and install a hose on the draining
pipe, open the valve.
Arrange air supply, for example via the safety valve by
setting it to open mode.
EVC 1316
English
Pipe installation

Electrical installation
NOTE
Electrical installation and service must be carried out
under the supervision of a qualified electrician. Elec-
trical installation and wiring must be carried out in
accordance with the stipulations in force.
Connection
■If an insulation test is to be carried out in the building,
disconnect the boiler.
■If the building is equipped with an earth-fault breaker,
EVC 13 should be equipped with a separate one.
■Connect the boiler on terminal block (9) to 400 V 3-
phase, neutral + ground via an electrical distribution unit
with fuses.
■EVC 13 does not include an omnipolar circuit breaker
on the incoming power supply. The installation must be
preceded by a circuit breaker with at least a 3 mm gap.
■Connection must not be carried out without the permis-
sion of the electricity supplier and must occur under the
supervision of a qualified electrician.
Select max. output using the power limiter, see section ・
Power control immersion heater" on page 18. The installer
must document the selected output. The factory setting
for the power limit is 9.0 kW.
All electrical equipment, except for the outdoor sensor
and current sensor, come already connected internally.
Connecting outdoor temperature sensors is described in
section "Outside sensor" on page 19
The boiler is equipped with load monitor, prepared for
centralised load control and has equipment for tariff con-
trol of electric water heater as an option.
Cable entry
Cable entry is at the rear or top of the boiler, see section
".Component positions" on page 25.
Switch
■Mode "0"
The boiler is completely switched off, heating not avail-
able.
NOTE
Terminal block (26) is supplied with power.
■Mode "1"
Only clock and any tariff control of water heaters run-
ning.
■Mode "2"
Normal operating mode. As mode”1” but with clock,
immersion heater, automatic controls and circulation
pump connected.
■Mode "3"
Emergency mode. This mode can be used temporarily if
something in the automatic controls does not work. The
boiler/supply temperature is then governed by the max
thermostat. Pump and immersion heater (limited to 6
kW) are in operation. Any connected water heater is
supplied with power.
NOTE
Check that the max thermostat is not set too high.
This is particularly important if there is an under floor
heating system.
NOTE
The power switch must not be turned from ”0” before
the boiler has been filled with water. Otherwise, the
temperature limiter, thermostat, thermometer and
the immersion heater could be damaged.
17EVC 13
English
Electrical installation

Returning power/self-test
The electric boiler is equipped with a time relay, which
blocks part of the immersion heater so that a maximum
of 6.0 kW is connected the first two hours after the boiler
has been disconnected.
The time delay can be easily bypassed by pressing the quick
start button. This action can be used when servicing and
function-testing the boiler.
NOTE
However, there is always 4 minutes between each
step size (see table under heading ”Power control
immersion heater().
EVC 13 has an integrated self-test program. This is activ-
ated by holding the quick start button in, then pressing
the restart button. The quick start button is released when
the relay engages. The self-test runs through the necessary
relay combinations. After completed self-test the electric
boiler must be restarted again.
GRUNDFOS
TypeUPS 25 - 60 130 P/N:59526447
230-
50Hz DK
PC:0202NIB
2,5uF
IP44
TF110
ClassH
Max 10bar
1/1(A) P1(W)
020 45
030 65
040 90
Restart button
Concealed behind the relay board!
Quick start button (2 hour delay)
Concealed behind the relay board!
Power control immersion heater
The boiler temperature is controlled by the outdoor tem-
perature. The control equipment connects power in steps
of 1 – 2 kW and controls itself in the relevant power range.
Restriction of the power is set using the ”Power restriction”
potentiometer, see image. To maintain an even supply
temperature, the stepping is time limited to 3-4 minutes
per power step.
Effekt-
begränsning
kW
Temperatur
begränsning
50C
20 8a0
60
40
70
30
97
11
13
5
535
30
10
25
20
15
Säkrings-
storlek(A)
Effekt-
begränsning
kW
Temperatur
begränsning
50°C
20 80
60
40
70
30
9
7
11
13
5
535
30
10
25
20
15
Säkrings-
storlek(A)
Effekt-
begränsning
kW
Temperatur
begränsning
50C
20 80
6040
7030
97
11
13
5
5 35
3010
2 5
20
15
Säkrings-
storlek (A)
Load per phase (A)Step size (kW)Output (kW)
L3L2L1
-5.05.022
5.85.85.82+24
4.39.39.33+25
8.78.78.766
10.110.110.12+2+37
8.713.713.76+28
13.013.013.06+39
13.018.018.06+3+211
5.018.818.86+3+2+213
Centralised load control/load monitor
If centralised load control or load monitor is used the HP
pipes for signal cables must be routed to the boiler. The
load monitor is set using the ”Fuse size" potentiometer,
see section "Power control immersion heater" on page 18.
Connection of the load monitor current sensor is made on
the terminal block (14) pre Safety Extra-Low Voltage (SELV),
see image. Centralised load control is connected using
potential free connections on the same terminal block.
29
121110987654321
14
50% 100%
29
121110987654321
14
50% 100%
Centralised load
Closed contact
causes cut in
power (accessory)
Outside sensor
Current sensor
EVC 1318
English
Electrical installation