NIBE ELK 15 Electric Heater Instruction Manual

: June 12, 2024
: NIBE

Table of Contents

Important information
Assembly
Component positions
General
System diagram
Dimensions
Technical specifications
Energy labelling
Electrical circuit diagram
References
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NIBE ELK 15
Installer Manual – Electric heater

IHB SV 2205-13
331546

Important information

Safety information
This manual describes installation and service procedures for implementation by specialists.
The manual must be left with the customer.
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 givensupervision 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.
This is an original manual. It may not be translated without the approval of NIBE. Rights to make any design or technical modifications are reserved. ©NIBE 2022.
ELK 15 must be installed via an isolator switch. The cable area has to be dimensioned based on the fuse rating used.
ELK 15 must not be used for heating tap water.
Symbols
NOTE
This symbol indicates danger to person or machine.
Caution
This symbol indicates important information about what you should consider when installing or servicing the installation.
TIP
This symbol indicates tips on how to facilitate using the product.
Marking
Explanation of symbols that may be present on the product’s label(s).
Serial number
The serial number can be found on the type plate on the side of ELK 15.
Caution
You need the product’s (14 digit) serial number for servicing and support.
Recovery
Leave the disposal of the packaging to the installer who installed the product or to special waste stations.
Do not dispose of used products with normal
household waste. It must be disposed of at a special waste station or dealer who provides this type of service.
Improper disposal of the product by the user results in administrative penalties in accordance with current legislation.
ELK 15 is an electric heater that can be used to supplement the heating capacity of your NIBE climate unit. When the heating demand is greater than the climate unit’s capacity, the electric heater connects automatically. The electrical equipment is adapted to the climate unit’s function.
The stainless steel electric coils and electric boiler tube are made of acid- resistant steel (SIS 2333), which gives a very good service life.
ELK 15 contains temperature limiter and contactors to enable external control of the power.
Compatible products
Connection is different depending on which product ELK 15 is to be used with.
These products can be connected directly to ELK 15:

F1345
F1355
SMO 20
SMO 40
SMO S40

These products require the accessory AXC 40:
S-series

S1155
S1255
VVM S320

F-series

F1145
F1155
F1245
F1255
VVM 225
VVM 320

VVM 310 requires the accessory DEH 310 .
VVM 500 requires the accessory DEH 500.
Contents
1 x Electric heater

NIBE ELK 15 Electric Heater - supplement1

Assembly

The electric heater must be installed upright (see image below).
A free space of 800 mm in front of the water heater is required to carry out servicing. If this is not possible, detachable connections must be used.

Component positions

NIBE ELK 15 Electric Heater - Component

Component list

Designations according to standard EN 81346-2.

General

The pipe installation must be carried out in accordance with applicable standards.
A circulation pump must be used to ensure the flow over the immersion heater. If the heating system valves can close the circulation completely, the bypass valve must be installed so that the flow through the electric heater does not stop. In closed installations an approved safety valve and pressure expansion vessel must be used.
Caution
Also see the installer manual for your heat pump/indoor module.
NOTE
The pipe work must be flushed before the electric heater is connected, so that any contaminants do not damage the component parts.
DRAINING
The system is most easily drained by installing a drainage valve at the lowest point on the pipe installation. The remaining water in ELK 15 is drained through the return line connection (XL2), see “Component location” on page 18. If the return line connection on ELK 15 is normally used for draining the unit, a drain valve can be installed here.
NOTE
The pipe work must be flushed before the electric heater is connected, so that any contaminants do not damage the component parts.

Pressure drop diagram ELK 15
Pressure drop NIBE ELK 15 Electric Heater -
Pressure

System diagram

NOTE
This is the outline diagram. Actual installations must be planned according to applicable standards.
SYMBOL KEY

Symbol	Meaning
Shut-off valve
Non-return valve
Circulation pump
Expansion vessel
Pressure gauge
Temperature sensor
Trim valve
Heat pump
Radiator system

Designations according to standard EN 81346-2.
OUTLINE DIAGRAM NIBE ELK 15 Electric Heater -
OUTLINE

NOTE
All electrical connections must be carried out by an authorised electrician.
Electrical installation and wiring must be carried out in accordance with the stipulations in force.
The climate unit must not be powered when installing ELK 15.
ELK 15 must be installed on terminal block X1 via a circuit breaker with a minimum breaking gap of 3 mm.
ELK 15 contains temperature limiter and two contactors to control the two power steps, 5 kW and 10 kW. For the best function, the power should be binary controlled, i.e. 5, 10 and 15 kW.
The electrical circuit diagram is at the end of this Installer handbook.
Electrical connection versions F1345
F1345 has different electrical connection versions depending 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. NIBE ELK 15 Electric Heater -
connection

F1345 2.0 / F1355
Terminal block X1 on ELK 15 is connected to terminal blocks X5, X7 and X8 on the input board AA101 in the heat pump as illustrated.
NIBE ELK 15 Electric Heater - connection

WITHOUT THERMOSTAT, TWO ACTIVE POWER STEPS
15 kW electric heater step active.
WITH THERMOSTAT, TWO ACTIVE POWER STEPS
15 kW electric heater step active.
10 kW electric heater step active in emergency mode. NIBE ELK 15 Electric
Heater - POWER

F1345
Terminal block X1 in ELK 15 connects to the terminal blocks X2-X4 in the heat pump as illustrated. NIBE ELK 15 Electric Heater -
terminal

WITHOUT THERMOSTAT, TWO ACTIVE POWER STEPS NIBE ELK 15 Electric Heater -
THERMOSTAT

WITH THERMOSTAT, TWO ACTIVE POWER STEPS
15 kW electric heater step active. NIBE ELK 15 Electric Heater -
ACTIVE

SMO S40 NIBE ELK 15 Electric Heater - ACTIVE POWER

SMO 20 and SMO 40
Terminal block X1 in ELK 15 connects to the terminal blocks X1 and AA7-X2 in the control module as illustrated.

WITHOUT THERMOSTAT, TWO ACTIVE POWER STEPS

NIBE ELK 15 Electric Heater - climatses

WITH THERMOSTAT, TWO ACTIVE POWER STEPS
15 kW electric heater step active. NIBE ELK 15 Electric Heater - ACTIVE
emergency

S1155, S1255, VVM S320, VVM S325
For connection of ELK 15 to the above products an accessory is required.
See the ”General” section on page 17 to see which accessory is required for your climate unit.
Terminal block X1 in ELK 15 connects to terminal block X9 on the accessory board as illustrated.

F1145, F1155, F1245, F1255, VVM 225, VVM 310, VVM 320, VVM 325 and VVM 500
For connection of ELK 15 to the above products an accessory is required.
See the ”General” section on page 17 to see which accessory is required for your climate unit.
Terminal block X1 in ELK 15 connects to terminal block X9 on the accessory board as illustrated.

Program setting the ELK 15 can be performed via the start guide or directly in the menu system in your compatible heat pump/indoor module.
Caution
Also see the Installer manual for the product that ELK 15 will be connected to.
The start guide appears at the first start-up after installation, but can also be found in menu 7.7 in the S-series and 5.7 in the F-Series.
Menu system
S-SERIES
SMO S40, S1155, S1255, VVM S320
Information about menu settings for the above products can be found in the manual for AXC 40 or in the main product’s manual.
Menu 7.2.1 – Add/remove accessories Add or remove accessories here.
Select “Step-controlled additional heat”.
Menu 7.2.6 – Step-controlled additional heat (AXC)
Here you can perform the following settings:

Select when the addition is to start.
Set max permitted number of additional steps.
If binary stepping is to be used.

Caution
“Start additional heat” in the menus 7.2.6 (external step-controlled additional heat) and 7.1.10.3 (degree minute settings internal additional heat) are factory set at 400DM. If both of the additional heat options are used and you want to have more steps, the start difference needs to be changed in one of the menus.
Menu 7.5.3 – Forced control
Forced control of the various components in the main product and of any connected accessories.

EB1-AA5-K4: Activating the circulation pump (GP10).
EB1-AA5-K1: Activating additional step 1.
EB1-AA5-K2: Activating additional step 2.
Setting of 0–10 V stepless forced control.
See the ”General” section on page17 to see which accessory is required for your product.

F-SERIES
F1345, F1355, SMO 20 and SMO 40
Menu 4.9.3 – degree minute setting
Here you select when the additional heat is to start and the degree minute intervals.
Menu 5.1.12 – addition
add. heat in tank
Setting range: on/off
Factory setting, fuse: off
max step
Setting range (binary stepping deactivated): 0 – 3
Setting range (binary stepping activated): 0 – 7
Default value: 3
fuse size
Setting range: 1 – 400 A
Factory setting: 16 A
transformation ratio
Setting range: 300 – 2500
Factory setting: 300
Here, you select whether the step-controlled additional heat is placed before or after the reversing valve for hot water charging (QN10). Step-controlled additional heat could be, for example, an external electric boiler.
Here you can set the max permitted number of additional heat steps and binary or linear stepping. When binary stepping is deactivated (off), the settings refer to linear stepping. If the hot water accessory is available and additional heat
location is selected as “after QN10” and additional heat in the tank is selected, the number of steps are restricted to 2 steps linear or 3 steps binary. Output AA7-X2:6 is reserved in this mode for additional heat in the hot water tank.
You can also set the fuse size.
TIP
See the accessory installation instructions for function description.
Menu 5.2 – system settings
Activating/deactivating of accessories.
Select: “step controlled add. heat”.
Menu 5.3.6 – step controlled add. heat
Here you can perform the following settings:

Select when the addition is to start.
Set max permitted number of additional steps.
If binary stepping is to be used.

Caution
“start additional heat” in the menus 5.3.6 (external step-controlled additional heat) and 4.9.3 (degree minute settings internal additional heat) are factory set at 400DM. If both of the additional heat options are used and you want to have more steps, the start difference needs to be changed in one of the menus.
Menu 5.6 – forced control
Forced control of the different components in the heat pump as well as in the different accessories that may be connected.

EB1-AA5-K1: Activating additional step 1.
EB1-AA5-K2: Activating additional step 2.
EB1-AA5-K4: Activating the circulation pump (GP10).

Caution
Linear stepping of ELK 15 is recommended.
F1145, F1155, F1245, F1255, VVM 225, VVM 310, VVM 320, VVM 325 and VVM 500
Information about menu settings for the products above is in the manuals for AXC 40, DEH 310 and DEH 500.
Menu 5.2 – system settings
Activating/deactivating of accessories.

Dimensions

All dimensions in mm.
Select: “step controlled add. heat”.
Menu 5.3.6 – step controlled add. heat
Here you can perform the following settings:

Select when the addition is to start.
Set max permitted number of additional steps.
If binary stepping is to be used.

Caution
“start additional heat” in the menus 5.3.6 (external step-controlled additional heat) and 4.9.3 (degree minute settings internal additional heat) are factory set at 400DM. If both of the additional heat options are used and you want to have more steps, the start difference needs to be changed in one of the menus.
Menu 5.6 – forced control
Forced control of the different components in the heat pump as well as in the different accessories that may be connected.

EB1-AA5-K1: Activating additional step 1.
EB1-AA5-K2: Activating additional step 2.
EB1-AA5-K4: Activating the circulation pump (GP10).

See the ”General” section on page17 to see which accessory is required for your product.

NIBE ELK 15 Electric Heater - ACTIVE climacte

Technical specifications

ELK 15

Energy labelling

Supplier
Model
Energy efficiency class for space heating| | NIBE
ELK 15
D
---|---|---
Rated heat output (Pdesignh)| kW| 15
Annual energy consumption space heating| kWh| 33,850
Seasonal space heating energy efficiency| %| 37.
Sound power level LWA indoors| dB| 35
Model
Condensing boiler| ELK 15
---|---
❑Yes 0 No
Low-temperature boiler| ❑Yes 0 No
B11 boiler| ❑Yes 0 No
Cogeneration space heater| ❑Yes 0 No
Combination heater| ❑Yes 0 No
Rated heat output| Prated| 15| kW| Seasonal space heating energy efficiency| rls| 37.| %
For boiler space heaters and boiler combination heaters: Useful heat output| For boiler space heaters and boiler combination heaters:Useful efficiency
At rated heat output and high-temperature re- gime| 134| 15| kW| At rated heat output and high-temperature re- gime| q4| 40| %
At 30 % of rated heat output and low-temperat- ure regime| P1| | kW| At 30 %of rated heat output and low-temperat- ure regime| qi| | %
Auxiliary electricity consumption| Other items
At full load| elmax| | kW| Standby heat loss| Pstby| 0.2| kW
At part load| elmin| | kW| Ignition burner power consumption| P;9| | kW
Standby mode| PSB| 0.01| kW| Annual energy consumption| OHE| 33.850| kWh
| | | | Sound power level, indoors| LwA| 35| dB
For combination heaters
Declared load profile for water heating| | Water heating energy efficiency| rlwh| | %
Daily energy consumption| Qelec| | kWh| Daily fuel consumption| Qfuel| | kWh
Annual energy consumption| AEC| | kWh| Annual fuel consumption| AFC| | 3

Electrical circuit diagram

NIBE ELK 15 Electric Heater - diagram

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