Nibe ELK 213 User guide
Installer manual ELK 213
LEK
Immersion heater
IHB GB 1535-3
031403
General
NIBE ELK 213 is an electric heater intended for heating
buildings and indirect heating of domestic hot water.
ELK 213 can also be mounted together with a boiler,
accumulator tank or heat pump. When installing to-
gether with, for example, a heat pump, the electric
heater is engaged automatically as supplementary
heating when the heating demand is greater than the
heat pump's capacity.
ELK 213 contains overheat protection and contactors
for external control of the four power groups, 7, 9, 11
and 13 kW Thermostat for the immersion heater and
isolator switch is operated by knob on the front of the
control panel.
The stainless steel electric coils and electric boiler tube
in ELK 213are made of stainless steel (SIS 2333), which
gives a very good service life.
ELK 213 is equipped with a time relay. Time delay is
recommended according to the Swedish Power Asso-
ciation standards when connected power exceeds 6
kW.
Compatible products
Connection is different depending on which product
ELK 213 is to be used with.
These products can be connected directly to ELK 213:
■F1345
■SMO 20
■SMO 40
These products require the accessory AXC 40:
■F1145
■F1155
Contents
Immersion heater1 x
Assembly
The electric heater must be installed upright (see image
below).
Free space of 200 mm in front and 500 mm above the
cassette is required for service. If this is not possible,
detachable connections must be used.
200
500
Immersion heaterChapter 1 | English, IHB - ELK 2132
1 English, IHB - ELK 213
Component positions
123456789NI
N1
N2
L1
L2
L3
QA3
QA2QA1
X8
KF1
X1
SF1
FA1
BT35
FD1
XL1
XL2
EB1
PF3
XL10
*
Component list
Immersion heaterEB1
Thermostat 3-poleBT35
Miniature circuit-breakerFA1
Temperature limiterFD1
Time relayKF1
Serial number platePF3
Contactor (-K10)QA1
Contactor (-K22)QA2
Contactor (-K21)QA3
SwitchSF1
Terminal blockX1
Terminal blockX8
Connection supply line, R50XL1
Connection return line, R50XL2
Drain connection R20XL10
* Counter flanges, R50. Accessory needed. See section "Accessories" on page 14 for more information.
3Chapter 1 | English, IHB - ELK 213Immersion heater
Front panel
SF1
FA1
BT35
FD1
NOTE
The switch (SF1) must not be put in "
D
a
y
15
12
24
21
618
R
3
9
15
ON OF F
" mode
before the boiler water has been filled. The
overheat protection, thermostat and the im-
mersion heater could be damaged.
Functions on the front panel
Switch
with 3 positions 0 -
D
a
y
15
12
24
21
618
R
3
9
15
ON OF F
-
D
a
y
15
12
24
21
618
R
3
9
15
ON OF F
:
SF1
Electric heater off (immersion heater and
any connected devices not in operation).
0
Any circulation pump in operation.
D
a
y
15
12
24
21
618
R
3
9
15
ON OF F
Immersion heater operating (immersion
heater and any connected devices in opera-
tion).
D
a
y
15
12
24
21
618
R
3
9
15
ON OF F
Immersion heater thermostat
This thermostat controls the immersion heaters.
BT35
Miniature circuit-breaker
Reset a tripped miniature circuit breaker by
pushing the button.
FA1
Overheat protection
Reset overheat protection by pushing the but-
ton. The fault must be rectified before doing this,
see section “Troubleshooting" on page 14.
FD1
Immersion heaterChapter 1 | English, IHB - ELK 2134
Pipe connections
General
Pipe installation must be carried out in accordance with
current norms and directives.
ELK 213 can be installed as a freestanding electric
boiler or as an electric heater with another heat source.
Tapping valve
If a drain valve is necessary, it can be installed in the
water heater's drain connection XL10). This connection
can also be used as a circulation pump connection. The
connection is plugged upon delivery.
Circulation pump
A circulation pump must be used to ensure the flow
over the immersion heater. If the heating system valves
can close the circulation completely, a bypass valve
must be installed so that the flow through the electric
heater does not stop. For a closed boiler installation, a
pressure expansion valve must be installed.
Safety valve
In closed boiler installations, the safety valves must be
installed in connection with the highest part of the
electric heater, but not directly on the heater. The
connection line must rise continuously.
The safety valve must be "exercised" regularly, at least
four times a year.
Pressure drop diagram
Flow
kPa
l/h
0
1
0,5
1,5
2
0 500 1000 1500 2000 2500
Pressure drop
Flow (l/h)
(kPa)
NOTE
The pipe work must be flushed before the
electric heater is connected, so that any con-
taminants do not damage the component
parts.
5Chapter 1 | English, IHB - ELK 213Immersion heater
System diagram
TIP
See www.nibe.eu for complete docking prin-
ciples.
NOTE
This is the outline diagram. Actual installations
must be planned according to applicable
standards.
Explanation
Electric heater ELK 213EB1
Pressure gaugeBP5
Expansion vesselCM4
Safety valveFL2
Circulation pumpGP10
Shut off valvesQM40 - QM41
Shunt valveQN11
Non-return valveRM5
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
System diagram
ELK 213 as electric heater
-RM5
Värmepump/
Inomhusmodul
-GP10 -QM41
-BT25
-QM40
-FL2
-CM4
-EB1
P
-BP5
Heat pump/
Indoor module
ELK 213 as freestanding boiler
-GP10 -QM41
-QM40
-FL2
-CM4
-EB1
P
-BP5
Immersion heaterChapter 1 | English, IHB - ELK 2136
Installation alternative
Accumulator tank (SP 300)
In the event of large hot water demands, ELK 213, in-
stalled on double-jacket accumulator tank type, can
be used to heat the domestic hot water. This is also a
good solution for aggressive or hard water. This install-
ation requires accessories. See section "Accessories" on
page 14.
Recommended thermostat setting: 75 °C
Explanation
Expansion vesselCM4
SP 300CP1
ELK 213EB1
Safety valve, heating medium sideFL2
Mixer valve, external heat sourceFQ2
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
-CP1
-EB1
-FL2
-FQ2
-CM4
7Chapter 1 | English, IHB - ELK 213Immersion heater
Boiler with internal water heater
Explanation
With the immersion heater installed on an existing boiler,
the existing control equipment is used.
Install the electric heater so that external heating does not
cause overheating, for example, in front of the firebox door
(to prevent flames blowing out) or next to the flue pipe (to
prevent damaging heat radiation). A suitable location is
normally at the side of the boiler, directly on the double
jacketed heater’s flanges or similar location.
When the electric heater is installed on the existing wood
boiler and is solely responsible for the heating demand, the
flue should be sealed.
Pressure gaugeBP5
Expansion vesselCM4
ELK 213EB1
Oil/gas boilerEM1
Safety valve, hot waterFL1
Safety valve, heating medium sideFL2
Mixing valveFQ1
Circulation pump, boilerGP4
Circulation pump, heating medium extern-
al
GP10
Tapping valveQM4
Shut-off valveQM40 - QM44
Shunt valveQN11
Non-return valveRM1
Designations in component locations according to standard
IEC 81346-1 and 81346-2.
-EM1 -QM43-GP4
-GP10
-QM44
-QM40 -QM41 -QM42-QM4 -RM1
-CM4
-FL1
-EB1
-FQ1
-FL2
P
-BP5
-QN11
Immersion heaterChapter 1 | English, IHB - ELK 2138
Boiler with external water heater
Explanation
When supplementing with the hot water heater, it is best
to equip the installation with a shut-off valve QM42, which,
during the summer time, when the electric hot water heater
is solely responsible for the hot water supply, by-passes the
existing hot water coil. This prevents condensation and in-
creases the service life of the boiler.
Pressure gaugeBP5
Expansion vesselCM4
ELK 213EB1
Water heaterEB2
Oil/gas boilerEM1
Safety valve, hot waterFL1
Safety valve, heating medium sideFL2
Mixing valveFQ1
Circulation pump, boilerGP4
Circulation pump, heating medium extern-
al
GP10
Tapping valveQM4
Shut-off valveQM40 - QM45
Shunt valveQN11
Non-return valveRM1
Designations in component locations according to standard
IEC 81346-1 and 81346-2.
-EM1
-FL1
-QM44-GP4
-GP10
-QM45
-QM40 -QM41 -QM43
-QM42
-QM4 -RM1
-EB1
-EB2
-FQ1
-CM4
-FL2
P
-BP5
-QN11
9Chapter 1 | English, IHB - ELK 213Immersion heater
Electrical connection
NOTE
All electrical connections must be carried out
by an authorised electrician.
Electrical installation and wiring must be car-
ried out in accordance with the stipulations in
force.
The climate unit must not be powered when
installing ELK 213.
NOTE
To prevent interference due to any splicing,
communication and/or sensor cables to extern-
al connections must not be laid closer than 20
cm from high voltage cables.
The electrical circuit diagram is at the end of this In-
staller handbook.
ELK 213 must be installed via a circuit breaker, with a
minimum breaking gap of 3mm.
All electrical equipment is connected at the factory.
Do not connect the electric heater without the permis-
sion of the electricity supplier.
NOTE
Reset the overheat protection, it may have
tripped during transport.
NOTE
The switch (SF1) must not be put in "
D
a
y
15
12
24
21
618
R
3
9
15
ON OF F
" mode
before the boiler water has been filled. The
overheat protection, thermostat and the im-
mersion heater could be damaged.
External control
If ELK 213 is to be controlled externally, the straps
between X8:1-X8:6, X8:2-X8:7 and X1:N1-X1:N2 must
be removed. In addition, the strap between X8:3-X8:5
must be moved so that it runs between X8:3-X8:9.
Electrical connection versions F1345
F1345 has different electrical connection versions de-
pending on when the heat pump was manufactured.
To check which electrical connection applies to your
F1345, check the designation "2.0" visible above the
right hand side of the terminal block as illustrated.
LEK
F1345 without 2.0
Terminal blocks X1 and X8 in ELK 213 connect to the
terminal blocks X2-X4 in the heat pump as illustrated.
X2 X3 X4
F1345
ELK 213
7 8 9 N PE
4321 5 6
X1
N1 N2 L1 L2 L3
X2
1 2 3 4 5 6 1 2 3 1 2 34 5 67 8 9
X2 X3 X4
ELK213
Heat pump
X8X1
X4X3X2
Immersion heaterChapter 1 | English, IHB - ELK 21310
F1345 with 2.0
Terminal blocks X1 and X8 in ELK 213 connect to the
terminal blocks X5, X7 and X8 on the input board
AA101 in the heat pump as illustrated.
X5 X7 X8
L1
-X3 -X4
123
-AA101 -AA101
NL2 L3 1 2 3456789
-X5
1 2 3456789
-X6
-X7 -X8 -X9
-FC1
-AA101 -AA101
-AA101 -AA101 -AA101
1 2 341 2 31 2 31 2 345
-X10
A B A B
-AA3-X7
K1
-AA101
K2 K3
C C NO NC
K4
CNO NC
QN10 GP16
LNL L L N N N LNLNPE
PE
6789 10 11 12 13 14 15 16 17 18 19 20 21 22
12V
A B 13 14
-BE1
-GP16
-BE2
-BE3
AUX 4
AUX 5
1 2 3456789 10 11 12 13 14 15
-AA3
-X6
0-10V
-EP14 -EP15
-BF1
16 17 18 2
-AA3
-X22
-AA3
-AA3
-X20 -X21
131 2 3
-X23
-BT1
-BT50
-BT25
-BT6
AUX 1
AUX 2
AUX 3
-BT7
-BT71
2.0
F1345 2.0
ELK 213
7 8 9 N PE
432
15 6
X1
N1 N2 L1 L2 L3
X2
1 2 3 1 2 3 44 5 6
X5
X7 X8
1 2 3
ELK213
Heat pump
X1 X8
X8X7X5
F1145 and F1155
To connect ELK 213 to F1145, the AXC 40 accessory is
required.
Terminal blocks X1 and X8 in ELK 213 connect to ter-
minal block X9 in AXC 40 as illustrated.
AXC 40
ELK 213
4321 7 865
X9
7 8 9 N PE
4321 5 6
X1
N1 N2 L1 L2 L3
X2
ELK213
Accessory card
X8X1
X9
SMO 20 and SMO 40
ELK 213
7 8 9 N432
15 6
X8
N1 N2 L1 L2 L3
X1
654321
2 3 41 0 PE
X1 AA7:X2
ELK213
Control module
X1 X8
AA7:X2X1
11Chapter 1 | English, IHB - ELK 213Immersion heater
Power supply
The power cable must be selected for the relevant
power and connected to terminal block X1.
Upon delivery the electric heater has three unopened
cable grommets. These are for supply, external control,
circulation pump and load monitor.
Output
The immersion heater can be set up to a maximum of
13 kW. The delivery setting is 9 kW in two steps.
The immersion heater power output is divided into
steps, 7, 9, 11 and 13 kW. Connection to another power
output is made at the top of the water heater, directly
on the immersion heater’s connections and on terminal
block (X8) in the electrical connection.
The power output can be controlled in three steps in
all powers and in two steps for power outputs 7 and
9 kW. Powers 11 and 13 kW must not be controlled in
two steps. Change-over occurs on terminal block (X8)
using the wiring enclosed.
7/9 kW in three steps
7 8 9 N4321 5 6
X8
X8
11/13 kW in three steps
7 8 9 N4321 5 6
X8
X8
Controlling the immersion heater
NOTE
It is recommended that ELK 213 is linearly
controlled. If binary control is still required,
ensure that step one has lowest output, step
two next highest output and step three the
highest output.
Power step (kW)Set output (kW)
1, 2, 47
2, 3, 49
1, 4, 611
3, 4, 613
Time relay
ELK 213 is equipped with a time relay (KF1), which
blocks part of the electric heater via contactor (QA2)
so that a maximum of 6 kW is connected the first two
hours after the immersion heater has been disconnec-
ted.
LEK
LEK
Immersion heaterChapter 1 | English, IHB - ELK 21312
Sensors
LEK
Thermostat bulb
Overheat protection bulb
1. Install the thermostat bulb (long).
2. Install the overheat protection bulb (short).
Connection of the circulation pump (GP10)
Connect the cable for any circulation pump fitted to
terminal block (X8), fused with miniature circuit
breaker (FA1) on 10 A and routed through separate
strain-relief.
8
9
N
X8
GP10
L
N
PE
ELK 213 Externt
ELK213
X8
External
GP10
Activation of ELK 213 together
with heat pump
The menu setting of ELK 213 can be performed via the
start guide or directly in the menu system.
Caution
Also see the Installer manual for the product
that ELK 213 will be connected to.
Start guide
The start guide appears upon first start-up after heat
pump installation, but is also found in menu 5.7.
Menu system
F1345, SMO 20 and SMO 40
Menu 4.9.3 - degree minute setting
Select when the addition is to start.
Menu 5.1.12 - addition
Setting:
■Max. number of permitted additional steps
■If binary stepping is to be used.
Caution
Linear stepping of ELK 213 is recommended.
F1145 and F1155
Information about menu settings for the products
above can be found in the manual for AXC 40.
See the ”Compatible products” section on page 2 to
see which accessory is required for your product.
13Chapter 1 | English, IHB - ELK 213Immersion heater
Disturbances in comfort
Troubleshooting
TIP
In the event of malfunction or operating mal-
function, first check the points below.
NOTE
Work behind covers secured by screws may
only be carried out by, or under the supervision
of, a qualified installation engineer.
NOTE
In the event of action to rectify malfunctions
that require work within screwed hatches, the
incoming supply electricity must isolated at
the safety switch.
Low room temperature
■Circuit or main MCB tripped.
■Possible earth circuit-breaker tripped.
■Switch (SF1) set in position "0" or "
D
a
y
15
12
24
21
618
R
3
9
15
ON OF F
".
■Miniature circuit breaker (FA1) has deployed.
■The overheat protection (FD1) has deployed. If the
overheat protection has deployed, the function of
the system's circulation pumps and valves must be
checked. To reset, press the button on the overheat
protection, when the temperature has fallen below
80 °C.
■Circulation pump has stopped.
■Air in boiler or system.
■The pressure is to low in the expansion vessel.
■The load monitor or some external control unit may
have blocked the power output.
Poor circulation
■Circulation pump, if fitted is stationary.
Accessories
Thread flange kit
For installing ELK 213 on SP 300.
Part no. 022 077
Immersion heaterChapter 1 | English, IHB - ELK 21314
Technical data
Dimensions
All dimensions in mm.
280
400
605
200
15Chapter 1 | English, IHB - ELK 213Immersion heater
Technical specifications
IP 21
ELK 213
Electrical data
400V 3N ~ 50HzRated voltage
13 (output on delivery 9 kW)kWMax output, electric heater
10AMax. permitted total current for connected apparatus
20ARecommended fuse rating immersion heater
IP21Enclosure class
Heating medium circuit
0.3/3MPa/barMax permitted pressure in the boiler
-l/hMin flow
1800l/hMax flow
Dimensions and weight
200mmWidth
280mmDepth
605mmHeight
18kgWeight
7litreVolume
Miscellaneous
069 500Part No.
Immersion heaterChapter 1 | English, IHB - ELK 21316
Energy labelling
Information sheet
NIBESupplier
ELK 213Model
D
Energy efficiency class for space heating
9kWRated heat output (Pdesignh)
20,310kWhAnnual energy consumption space heating
36.6%Seasonal space heating energy efficiency
35dBSound power level LWA indoors
Technical documentation
ELK 213Model
Yes No
Condensing boiler
Yes No
Low-temperature boiler
Yes No
B11 boiler
Yes No
Cogeneration space heater
Yes No
Combination heater
%36.6ƞs
Seasonal space heating energy efficiencykW9PratedRated heat output
For boiler space heaters and boiler combination heaters: Useful efficiencyFor boiler space heaters and boiler combination heaters: Useful heat output
%40ƞ4
At rated heat output and high-temperature
regime
kW9P4
At rated heat output and high-temperature
regime
%ƞ1
At 30 % of rated heat output and low-temper-
ature regime
kWP1
At 30 % of rated heat output and low-temper-
ature regime
Other itemsAuxiliary electricity consumption
kW0.15Pstby
Standby heat losskWelmaxAt full load
kWPign
Ignition burner power consumptionkWelminAt part load
kWh20,310QHE
Annual energy consumptionkW0.01PSB
Standby mode
dB35LWA
Sound power level, indoors
For combination heaters
%ƞwh
Water heating energy efficiencyDeclared load profile for water heating
kWhQfuel
Daily fuel consumptionkWhQelec
Daily energy consumption
GJAFCAnnual fuel consumptionkWhAECAnnual energy consumption
17Chapter 1 | English, IHB - ELK 213Immersion heater
Electrical circuit diagram
Immersion heaterChapter 1 | English, IHB - ELK 21318
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