Nibe ERS 20-250 Benutzerhandbuch
Installer manual
LEK
NIBE™ ERS 20-250
Ventilation heat exchanger
IHB EN 1726-3
331812
Table of Contents
41 Important information
4Safety information
4Serial number
5Recovery
5Country specific information
62 Delivery and handling
6Transport and storage
6Assembly
6Supplied components
7Removing the covers
8
3 The ventilation heat exchanger
design
8
9
104 Pipe and ventilation connections
10Dimensions and pipe connections
10Mounting
11Condensation water drain
11General ventilation connections
12Preheating the outdoor air
12Ventilation flow
12Adjusting ventilation
135 Electrical connection
13Connecting to main product
156 Commissioning and adjusting
15Preparations
15Filling and venting
15Start-up and inspection
167 Program settings
16Start guide
16Menu system
178 Disturbances in comfort
17Info-menu
17Manage alarm
17Troubleshooting
189 Service
18Water seal for condensation water
18Heat exchanger
1910 Accessories
2011 Technical data
20Dimensions
21Technical specifications
22Energy labelling
23Electrical circuit diagram
27Contact information
3Table of Contents |NIBE™ ERS 20-250
Safety information
This manual describes installation and service procedures
for implementation by specialists.
This appliance can be used by children
aged from 3 years and above and per-
sons 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 under-
stand 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 2017.
Symbols
NOTE
This symbol indicates danger to machine or
person.
Caution
This symbol indicates important information
about what you should observe when maintain-
ing your installation.
TIP
This symbol indicates tips on how to facilitate
using the product.
Marking
The CE marking means that NIBE ensures that the
product meets all regulations that are placed on it based
on relevant EU directives. The CE mark is obligatory for
most products sold in the EU, regardless where they are
made.
Serial number
The serial number can be found at the top left.
LEK
Serial number
LEK
Caution
You need the product's serial number for servi-
cing and support.
NIBE™ ERS 20-250Chapter 1 | Important information4
1 Important information
Recovery
Leave the disposal of the packaging to the in-
staller who installed the product or to special
waste stations.
When disposing of the product, the constituent
materials and components, such as compressors,
fans, circulation pumps and circuit boards, must be dis-
posed of at a special waste station or at a dealer who
provides this type of service.
To access the separate components, refer to the section
that shows the construction of the product. No special
tools are required for access.
Improper disposal of the product by the user results in
administrative penalties in accordance with current legis-
lation.
Country specific information
Installer manual
This installer manual must be left with the customer.
5Chapter 1 | Important informationNIBE™ ERS 20-250
Transport and storage
ERS 20 should be transported and stored in the dry.
Assembly
ERS 20 is installed in the roof using the enclosed roof
brackets. Noise from the fans can be transferred to the
brackets.
■Install ERS 20 on an outside wall, ideally in a room
where noise does not matter, in order to eliminate
noise problems. If this is not possible, avoid placing it
against a wall behind a bedroom or other room where
noise may be a problem.
■Wherever the unit is located, walls to sound sensitive
rooms should be fitted with sound insulation.
■Condensation comes from the underside of the ventil-
ation heat exchanger. Condensation outlet with water
seal must be installed and routed to an internal drain.
■The product's installation area must always have a
temperature of at least 10 °C and max 35 °C.
Installation area
Leave a free space of 1,000 mm in front of the distribu-
tion box and 200 mm in front of the other sides. Because
servicing is carried out from underneath, free space of
1,600 mm is recommended below the unit.
1000
200 200
200
Supplied components
2 x roof brackets
NIBE™ ERS 20-250Chapter 2 | Delivery and handling6
2 Delivery and handling
Removing the covers
1. Slacken off the four screws holding the side panel.
Move the panel out and downwards.
LEK
2. Unscrew all the screws holding the bottom panel.
LEK
3. Lift the bottom panel down.
LEK
7Chapter 2 | Delivery and handlingNIBE™ ERS 20-250
LEK
LEK
GQ3
XL32 XL34
XL33 XL31AA5
GQ2 EP26
XL40
HQ10HQ11
UB1
QN37
W1W2PF1
BT22BT20BT23BT21BL2
NIBE™ ERS 20-250Chapter 3 | The ventilation heat exchanger design8
3 The ventilation heat exchanger design
Pipe connections
Ventilation connection, exhaust airXL31
Ventilation connection, extract airXL32
Ventilation connection, supply airXL33
Ventilation connection, outdoor airXL34
Condensation water drainXL40
Sensors etc.
Temperature sensor, exhaust airBT20
Temperature sensor, extract airBT21
Temperature sensor, supply airBT22
Temperature sensor, outdoor airBT23
Level monitorBL2
Electrical components
Accessory cardAA5
Heat exchangerEP26
Cable glandUB1
Cord with connection plugW1
Communication cableW2
Ventilation
Heat exchangerEP26
Exhaust air fanGQ2
Supply air fanGQ3
Exhaust air filterHQ10
Supply air filterHQ11
Bypass damperQN37
Miscellaneous
Type platePF1
Condensation water troughWM5
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
9Chapter 3 | The ventilation heat exchanger designNIBE™ ERS 20-250
Dimensions and pipe
connections
673
1202
Ø15
Mounting
When installing on a wooden roof, a vibration damper
is recommended to prevent vibration being transferred.
1. Install the two enclosed roof mountings in the roof.
1205
2. Move ERS 20 into position.
LEK
3. Secure ERS 20 with screws.
NIBE™ ERS 20-250Chapter 4 | Pipe and ventilation connections10
4 Pipe and ventilation connections
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