Oxygen X-Air C180E User manual

Rev 1.3 2022.01
Installation and operation manual
Heat Recovery Unit OXYGEN X-Air C180E
enthalpy exchanger

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TABLE OF CONTENTS
1. TRANSPORT AND STORAGE OF EQUIPEMENT....................................................................................................................................................................................3
2. PACKAGE CONTENTS....................................................................................................................................................................................................................................4
3. SAFETY REQUIREMENTS ..............................................................................................................................................................................................................................5
4. TECHNICAL DATA..........................................................................................................................................................................................................................................6
4.1. EU declaration of conformity..................................................................................................................................................................................................6
4.2. Product information sheet. Delegated regulation (EU) 1254/2014 ..........................................................................................................................7
4.3. Performance curves....................................................................................................................................................................................................................8
4.4. Sound characteristics. LST EN13141-7 .....................................................................................................................Error! Bookmark not defined.
4.5. Performance and power consumption. LST EN13141-7 ...............................................................................................................................................9
4.6. Dimensions and weight ......................................................................................................................................................................................................... 10
4.7. Functionality............................................................................................................................................................................................................................... 11
5. INSTALLATION.............................................................................................................................................................................................................................................. 12
5.1. Mounting orientation ............................................................................................................................................................................................................. 12
5.2. Mounting location ................................................................................................................................................................................................................... 12
5.3. Ducts............................................................................................................................................................................................................................................. 13
5.4. Maintenance and service hatch .......................................................................................................................................................................................... 14
5.5. Ventilation system balancing............................................................................................................................................................................................... 14
5.6. Operating parameters of the ventilation system.......................................................................................................................................................... 15
6. CONNECTION ............................................................................................................................................................................................................................................... 16
6.1. Electric circuit connection ..................................................................................................................................................................................................... 16
6.2. Control panel installation...................................................................................................................................................................................................... 17
6.3. Comfort functions connector .............................................................................................................................................................................................. 18
6.4. Control board electrical wiring diagram.......................................................................................................................................................................... 19
6.5. Control board contacts .......................................................................................................................................................................................................... 20
7. OPERATION ................................................................................................................................................................................................................................................... 21
7.1. Operating conditions.............................................................................................................................................................................................................. 21
7.2. Operation of the Unit during warm period of year ..................................................................................................................................................... 21
7.3. Operation of the Unit during cold period of year ........................................................................................................................................................ 22
7.4. Right ventilation power setting .......................................................................................................................................................................................... 23
7.5. Weekly ventilation program................................................................................................................................................................................................. 23
7.6. Air filters ...................................................................................................................................................................................................................................... 24
7.7. WiFi controller........................................................................................................................................................................................................................... 26
7.7.1. Downloading the app ...................................................................................................................................................................................................... 26
7.7.2. WiFi connection set-up ................................................................................................................................................................................................... 27
7.7.3. Home screen ....................................................................................................................................................................................................................... 29
7.7.4. Weekly operation program............................................................................................................................................................................................ 30
7.7.5. Ventilation boost activation........................................................................................................................................................................................... 31
7.7.6. Away....................................................................................................................................................................................................................................... 31
7.7.7. Filter menu........................................................................................................................................................................................................................... 32
7.7.8. System settings menu...................................................................................................................................................................................................... 32
7.7.9. Ventilation system balancing ........................................................................................................................................................................................ 33
7.7.10. Factory defaults.................................................................................................................................................................................................................. 33
7.7.11. P2P connection................................................................................................................................................................................................................... 34
7.8. Control panel with touchscreen display .......................................................................................................................................................................... 35
7.8.1. Standby mode .................................................................................................................................................................................................................... 35
7.8.2. Main screen ......................................................................................................................................................................................................................... 36
7.8.3. Settings menu..................................................................................................................................................................................................................... 37
7.8.4. Weekly operation program............................................................................................................................................................................................ 38
7.8.5. Failure indication ............................................................................................................................................................................................................... 39
7.9. Control panel with a knob .................................................................................................................................................................................................... 40
7.9.1. Operating state indicator................................................................................................................................................................................................ 40
7.9.2. Air filter replacing / anti-frost protection indicator .............................................................................................................................................. 40
7.9.3. Failure indicator ................................................................................................................................................................................................................. 41
7.9.4. RESET procedure................................................................................................................................................................................................................ 42
7.9.5. Resetting filter lifetime meter ....................................................................................................................................................................................... 42
7.9.6. Additional system settings............................................................................................................................................................................................. 43
8. MAINTEINANCE AND WARRANTY........................................................................................................................................................................................................ 44
9. CONTACTS ..................................................................................................................................................................................................................................................... 45

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1. TRANSPORT AND STORAGE OF EQUIPEMENT
Heat Recovery Unit (hereinafter –the Unit) is prepared for transportation and storage. Packaging
materials ensure protection against exposure to environment, dust and humidity. The Unit must be
properly secured during transportation to protect it against possible housing deformation or other
mechanical damage.
Transportation conditions: -20oC - +30oC.
Long-term storage conditions: +5oC - +30oC, relative air humidity <= 50%.
CONSIGNMENT ACCEPTANCE:
•Carefully check the received consignment –make sure that the number of packages matches
with the consignment documentation. Upon noticing any non-conformity or damage of the
package (tears, dents or compressed box, detached or reattached packaging tape) inform the
courier immediately and indicate the disrepancies or damages in the consignment document.
•Verify if the right product was delivered. Upon noticing any non-conformity inform the sender
immediately.
•Verify if all the supplementary parts listed were delivered. In case of any doubt contact the
Sender immediately.
•Do not attempt to repair the Unit damaged during the transportation by yourself.
IMPORTANT! Sender does not assume any obligations towards damage or loss of the Unit or its part,
if there is no corresponding record in the consignment document.

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2. PACKAGE CONTENTS
Heat Recovery Unit OXYGEN X-Air C180E
1 pc
Control panel (10m connection cable included) or WiFi adapter.
May be delivered as separate package.
1 pc
Fastening elements:
L-shaped horizontal installation bracket
4 pcs
Bolt, type M5, 8 mm
8 pcs
Spring washer, type M5
8 pcs
Installation manual
1 pc

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3. SAFETY REQUIREMENTS
Carefully read and follow safety requirements provided below before installing and while operating
the Unit:
•Do not discard the Installation and operation manual, keep it for future reference.
•The Unit should be installed and operated in compliance with this Installation and operation
manual, following the requirements of effective legislation and standards.
•When connecting the Unit to mains supply, grounding must be installed in compliance with
requirements of effective legislation and standards.
•To prevent accidents and potential damage to the Unit it should be installed, connected,
maintained and repaired only by qualified technician. Never attempt to do this by yourself.
•Turn off the Unit by using Control panel and wait for fans to stop completely before replacing
air filters.
•Turn off the Unit by using Control panel, wait for fans to stop completely and disconnect the
Unit from mains supply before performing any maintenance.
•Disconnect the Unit from mains supply before disconnecting or reconnecting the control
panel.
•Before connecting the Unit make sure that no items will get sucked into the its air intake
openings.
•The Unit is not intended to be used by persons (including children) with reduced physical,
sensory or mental capabilities, unless they have been instructed to use the Unit and under
constant supervision of person held responsible for their safety.
•Children may only use the Unit under adult supervision.
•Only original supplementary parts and consumables, certified by manufacturer should be
used.
•The Unit package (cardboard, plastic, foam polystyrene) can pose hazard to children. Dispose
or recycle the package elements.
•Disused Unit should be disposed in accordance with requirements of legislation on handling
of waste electrical and electronic equipment.
•IT IS FORBIDDEN to operate the Unit with damaged mains supply cable. Switch off the power
circuit-breaker to disconnect mains supply and contact a qualified technician or manufacturer
service centre immediately upon noticing such damage.
•IT IS FORBIDDEN to attempt the repair of the damaged Unit or its part, to open its service
cover. Contact a qualified technician or manufacturer service centre.
•IT IS FORBIDDEN to operate the Unit while construction works are still in progress to remove
dust or excess moisture. Fine dust of building materials, used in construction, can irreversibly
change characteristics of the heat exchanger or cause damage to sensitive electronic
components. Failure of the Unit caused by such operation will void the warranty.

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4. TECHNICAL DATA
4.1. EU declaration of conformity
We, undersigned below, representing the manufacturer of ventilation equipment:
OXYGEN group, JSC
Birzelio 23-osios g. 29
50201 Kaunas
LITHUANIA
confirm, that heat recovery ventilation device OXYGEN X-Air C180E conforms to Europe Union
standards, directives and regulations:
2009/125/EC –eco-design requirements for energy-related products
ES 1253/2014
ES 1254/2014
ES 2017/1369
EN 13141-7:2010
2010/30/EU –labelling and standard product information of the consumption of energy and other
resources by energy-related products
ES 1254/2014
2011/65/EU –restriction of the use of certain hazardous substances in electrical and electronic
equipment (RoHS)
EN 50581(2012)
2014/35/EU –harmonization of the laws of the Member States relating to the making available on
the market of electrical equipment designed for use within certain voltage limits
EN 60335-1:2012
EN 60335-1:2012/A11:2014
CEO Zilvinas Salialionis
01.08.2020, Kaunas

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4.2. Product information sheet. Delegated regulation (EU) 1254/2014
a)
Supplier's name or trade mark
OXYGEN
b)
Model identifier
X-Air C180E
c)
Specific energy consumption (SEC), SEC
class
A+
Cold climate
kWh/m2.a
-87.8
Average climate
kWh/m2.a
-43.3
Warm climate
kWh/m2.a
-17.9
d)
Declared typology
Bidirectional,
residential
e)
Type of drive installed or intended to be
installed
Variable speed drive
f)
Type of heat recovery system
Recuperative
g)
Thermal efficiency of heat recovery
%
87.9
h)
Maximum flow rate
m3/h
143
i)
Electric power input of the fan drive,
including any motor control equipment, at
maximum flow rate
W
76
j)
Sound power level (LWA)
49
k)
Reference flow rate
m3/s
0.028
l)
Reference pressure difference
Pa
50
m)
Specific power input (SPI)
W/(m3/h)
0.24
n)
Control factor
0.65
Control typology
Local demand control
o)
Declared maximum leakage rate:
internal
%
1.4
external
%
2.5
q)
Position and description of visual filter
warning
Refer to user's manual
s)
Internet address for pre-/dis-assembly
instructions
www.oxygenvent.com
v)
The annual electricity consumption (AEC),
average climate zone
kWh/100m2.a
172
w)
The annual heating saved (AHS)
Cold climate
kWh/100m2.a
9096
Average climate
kWh/100m2.a
4650
Warm climate
kWh/100m2.a
2103
Table 1. Product information sheet. Delegated regulation (EU) 1254/2014
Refer to comprehensive product fiche to evaluate device parameters for different control options.

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4.3. Performance curves
Graph. 1. Ventilation power dependence on the resistance of installed ventilation system
0
50
100
150
200
250
300
350
400
050 100 150 200
Resistance, Pa
Air flow, m3/h
Performance curves
Max
Med
Min

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4.4. Performance and power consumption. LST EN13141-7
Power setting
Resistance, Pa
Air flow, m3/h
El. consumption, W
Max
100
200
77.2
125
192
77.2
150
184
77.1
175
176
77.1
200
168
77
225
161
77.2
250
155
77.3
275
147
77.1
300
139
76.9
325
131
78.4
350
121
79.9
Med
50
158
43.1
70
153
43
90
147
42.9
110
141
42.8
130
132
42.7
150
124
42.6
170
114
42.5
190
102
42.4
Min
20
112
23.1
30
109
23.0
40
105
22.9
50
100
23.0
60
95
23.1
70
90
23.0
80
85
22.9
90
77
22.8
Table 2. Performance and power consumption. Measured according to LST EN13141-7 with M5 (EN 779:2012) class filters
installed

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4.5. Dimensions and weight
Figure 1. Unit dimensions
Body dimensions and weight
Length, mm
Width, mm
Height, mm
Weight, kg
OXYGEN X-Air C180E
1015
537
272
25
Table 3. Dimensions and weight
OXYGEN X-Air C180E left-side version
OXYGEN X-Air C180E right-side version

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4.6. Functionality
Function
Control panel
with a rotary
switch
LCD control
panel / WiFi
controller
Ventilation
Efficient EC fans
✓
Stepless ventilation intensity adjustment within 30-100% range
✓

Ventilation intensity setting at 5% steps within 30-100% range

✓
Weekly operation program, up to 4 different modes for every week day

✓
Ventilation boost activation by control panel button

✓
System balancing by adjusting power of each fan
✓
Display of extract air temperature and relative air humidity

✓
Display of date and time

✓
Preservation of indoor air humidity
✓
Stepless increase of preheater power
✓
Ventilation boost activation by external switch
✓
"Away" - reduced ventilation power, when security system is active
✓
Adjustment of ventilation power according to CO2 level indoors
✓*
Adjustment of ventilation power according to humidity level indoors
✓*
Disabling of supply air stream

✓
Filtration
M5 (EN 779:2012) / EPM10 50% (ISO 16890), retains average size particles
✓
Carbon G4 (EN 779:2012) / EPM2.5 60% (ISO 16890), retains average size
particles and unwanted odors
✓
F7 (EN 779:2012) / EPM1 70% (ISO 16890), retains smallest particles and
pollen
✓
Visual warning of the necessity to replace filters
✓
Filter lifetime metering
✓
Protection functions
Overheat protection
✓
Anti-frost protection
✓
Ventilation shutdown function upon activation of fire alarm
✓*
Visual warning of the Unit failure
✓
Additional functions / features
Possibility to install according to the layout of outdoor ventilation openings
(right-side / left-side versions)
✓**
Control of electric damper
✓**
Control of in-duct comfort heater
✓**
Table 4. Functionality
* requires additional ventilation system components to be purchased
** depends on device configuration (to be selected prior ordering) and software version

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5. INSTALLATION
5.1. Mounting orientation
Choose the right mounting orientation of the Unit before ordering. It will not be possible to change
the mounting orientation later.
Figure 2. Mounting orientation
5.2. Mounting location
The Unit should be installed in a heated room such as bathroom, storage room, boiler room or attic.
Make sure, that there is sufficient space to install not only the Unit itself, but also auxiliary ventilation
system components –noise silencers or air distribution boxes. Make sure that there is a possibility to
connect the condensate drain pipe of the Unit to building's sewerage system and to mount siphon.
A –Outside air
B –Exhaust air
C –Extract air
D –Supply air
Right-side version
Left-side version

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The Unit should be installed horizontally with service cover looking downwards.
L-shape fastening brackets (provided) should be used to fasten Unit to the ceiling. Use ceiling pins or
locking sleeves (not included), depending on installation surface. It is recommended to use vibro-
isolation gaskets (not included) to ensure that Unit vibration will not be transferred to the mounting
surface.
5.3. Ducts
It is recommended to install outside air supply and exhaust ducts as far as possible from each other
to prevent the ingress of contaminated air back to premises. Please refer to local construction
regulations.
Make sure that outdoor humidity or precipitation will not get into the Unit, when connecting outside
air supply and exhaust ducts. Make sure that openings in the outside wall are installed lower than
corresponding ducts of the Unit. The air intake opening in the outside wall should be protected
against precipitation ingress to ventilation duct by grille or roof.
Figure 3. Air intake duct connection diagram
IMPORTANT! At least 1° ventilation duct incline (refer to Figure 3 "Air intake duct connection
diagram") should be ensured or other sufficient measures taken to prevent ingress of outdoor
humidity or precipitation into the Unit.
IMPORTANT! Both outside air intake and exhaust ducts should be covered with a layer of thermal
insulation of sufficient thickness to prevent condensation of humidity on their walls due to difference
between outdoor and indoor air temperatures.
IMPORTANT! Avoid using duct grille with dense mesh –it can quickly become clogged with dust and
will prevent fresh air supply. The Unit is equipped with supply air filter to trap dust and insects.

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5.4. Maintenance and service hatch
When installing the Unit ensure enough space for its maintenance. Maintenance and service hatch
installed in the ceiling should be of suitable size to allow convenient access to all Unit components.
At least 100 mm distance should be ensured from every edge of the Unit. Suspended ceiling should
be installed at least 30 mm from the lowest point of the Unit housing (refer to section Error! Reference
source not found. "Error! Reference source not found.").
Figure 4. Maintenance and service hatch
IMPORTANT! Owner of the Unit shall ensure the possibility to perform Unit maintenance. If there is
not enough space for Unit maintenance, the manufacturer's representative is entitled to refuse to
perform maintenance or repairs.
5.5. Ventilation system balancing
It is necessary to balance the supply and exhaust air flows of the air handling unit during first launch
of the ventilation system. Ventilation system will ensure proper operation, optimal heat recovery and
the lowest possible electricity consumption during the cold season only if properly balanced.
System has to be balanced according to ventilation system installation project. Balance supply and
exhaust air flows by choosing necessary coefficients in App (refer to section 7.7.9 "Ventilation system
balancing"), setting values for Fan1 and Fan2 in the operating parameters setting menu of control
panel with touchscreen display (refer to section 1.5 of Operating parameters setting manual) or
adjusting P3 and P4 controls of control panel with the knob (refer to section 7.9.6 "Additional system
settings").

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There is a risk of heat exchanger freezing when operating an unbalanced ventilation system during
the cold season, as a result of which the Unit may start supplying cold air to the premises. Unexpected
indoor air moisture condensation can occur on the supply air ducts.
IMPORTANT! Balancing of the system can only be entrusted to qualified professional possessing all
the necessary properly calibrated technical equipment.
IMPORTANT! Request a ventilation system passport to be prepared.
IMPORTANT! Freezing of heat exchanger which occurred during operation of an unbalanced
ventilation system can irreversibly change the properties of the heat exchanger and damage the
internal air tightness of the Unit. Failure of the Unit due to freezing while operating the unbalanced
ventilation system will void the warranty.
5.6. Operating parameters of the ventilation system
The Unit is fully operational. However, depending on its configuration, installation location, and the
characteristics of installed ventilation system, it may be necessary to set different than preset
operating parameters. Failure to do so may result in unforeseen changes in ventilation speed while
operating the Unit during cold season, higher than usual electricity consumption may be expected.
IMPORTANT! Only entrust setting of operating parameters to qualified technician with necessary
knowledge to perform this task.
IMPORTANT! It is only possible to set operating parameters if the Unit is being controlled by control
panel with touchscreen display or an app.

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6. CONNECTION
Mains supply, control panel cable and, if necessary, comfort function connector should be connected
to the Unit, according to the following diagram:
Figure 5. Connection of the Unit
IT IS FORBIDDEN to connect any cables or devices to connectors of control panel and comfort
functions, despite similarity to any standard connectors. External similarity of connectors does not
guarantee compatibility –connected devices may fail or damage the Unit. Failure of the Unit due to
incompatible supplementary parts connection will void the warranty.
IT IS FORBIDDEN to connect or disconnect control panel or WiFi controller without turning off the
mains power first. Failure of control panel or the Unit due to improper connection will void the
warranty.
6.1. Electric circuit connection
WARNING!!!
•To prevent accidents and potential damage to the Unit, it can only be connected by a qualified
technician. Do not attempt to do that by yourself.
•Mains supply power rating shall comply with the rating indicated in the Unit manual.
•Mains supply should be disconnected when connecting the Unit.
•The Unit should be connected according to diagram provided in the User Manual.
•Only power cable provided with the Unit should be used to connect it to power source.
•Grounding should be installed in compliance with the requirements of effective legislation and
standards when connecting the Unit to mains supply.
•Electric circuit must be equipped with suitable power circuit-breaker.
- Control panel connector (USB)
- Comfort functions connector (RJ-45)
- Mains cable (230V, 3x1.5mm2L+N+PE)

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Power supply
230V, 50Hz, 5A
Maximum electric power consumption –fans
77W
Maximum electric power consumption –preheater
800W
IP protection class
20
Table 5. Electrical parameters
6.2. Control panel installation
It is recommended to install control panel of the Unit in a living space or hall at 1.5 –1.6 m height
from the floor for convenient access. Lay the control panel connection cable supplied from the Unit
location to the control panel location before finishing decoration works.
The maximum permissible installation distance of control panel from the Unit is 100 m. Use a flexible
mounting cable 4x0.22mm² to connect the panel, the resistance of each conductor must not exceed
40ꭥ.
Figure 6. Installation of the control panel
IT IS FORBIDDEN to install control panel in premises, where relative air humidity may exceed 70%.

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6.3. Comfort functions connector
The Unit supports following external functionality:
Fire alarm
emergency shutdown of the Unit upon activation of fire alarm
Boost
ventilation boost activation by external switch
CO2sensor
ventilation power increase based on readings of auxiliary CO2or humidity sensors
connected
Away
reduction of ventilation power while away from home by security system or
external switch
Table 6. Comfort functions
Function can be activated by short circuiting the respective digital contacts of RJ45 function
connector.
Figure 7. Contacts of functions connector
IMPORTANT! Only passive electric switch or electric relay should be used to activate the function.
IMPORTANT! If the Unit is being controlled by control panel with a knob, please make sure that
corresponding S2 switch does not block the usage of function (refer to section 7.9.6 "Additional
system settings").
IT IS FORBIDDEN to connect the functions connector directly to electrical wiring network.
Optional RJ45 adapter can be used for more convenient connection:
Figure 8. Comfort functions RJ45 connector adapter
Conn. contact No.
Function of ventilation system
1-2
Away
3-4
CO2sensor
5-6
Boost
7-8
Fire alarm

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6.4. Control board electrical wiring diagram
Figure 9. Control board electrical wiring diagram
IMPORTANT! Make sure that the Unit is disconnected from mains supply before connecting or
disconnecting system components.