flowair Cube O Guide

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Cube O
TECHNICAL DOCUMENTATION
USER’S AND INSTALLATION MANUAL
DTR Cube O v1.0 EN

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V1.0 MT-DTR-CUBE-O-EN-V1
06.2023r

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Thank you for purchasing Cube O unit.
This manual was published by FLOWAIR Sp. z o. o. User’s and installation manual is a set of recommendations and tips designed to
show procedures, methods and remarks for proper installation, launch and operation of the unit.
The manufacturer reserves the right to correct and change the user’s manual anytime without notice, so as changes in
the devices not influencing its operation.
The manual is an integral part of the device and must be delivered with it to the customer. Before installation, launch and operation
of Cube O device, the customer should read thoroughly this manual, especially with security section to eliminate risk of harm to the
health or damage to material property. All guidelines mentioned in the manual should be applied without omitting any point. Failure
to adhere to the following points may result in life-threating due to improper transport and installation and can lead to damages to
the unit or its improper operation. The manufacturer shall not be liable for deficiencies during installation and unit improper
operation due to failure to comply with this manual. Meanwhile, the producer’s warranty will not be applied in case of gross
negligence or not complying with this manual.
You should consult the service or manufacturer if this manual contains incomprehensible or ambiguous descriptions.
It should be ensured that all users of unit are complied with this manual before launching it. In case of unit’s transfer to
another user, this manual must also be transferred.
All activities during connecting to electrical installation must be conducted by qualified staff, having necessary
attestations and certificates to work with voltage devices according to the laws of the country.
This manual is only intended to use for persons using or installing the Cube O devices. Its content is legally protected and must not
be copied, translated or processed (including electronic media) in total or partially without the manufacturer’s written declaration
of consent.
FLOWAIR Sp. z. o. o.
(formerly FLOWAIR Głogowski i Brzeziński Sp.J.)
Office:
ul. Chwaszczyńska 135, 81-571 Gdynia
tel. [phone], fax [phone]

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TABLE OF CONTENTS
TECHNICAL DOCUMENTATION: EN
1. IMPORTANT INFORMATION................................................................................................................................................ 5
2. GENERAL INFORMATION .................................................................................................................................................... 7
2.1. Cube O application ...................................................................................................................................................... 7
2.2. Device configuration ................................................................................................................................................... 7
2.3. General characteristics construction Cube O................................................................................................................8
2.4. General characteristics construction of the Cube ORNK configuration with the roof section.........................................9
2.5. General characteristics construction of the Cube OR....................................................................................................9
3. TECHNICAL DATA.............................................................................................................................................................. 10
3.1. Technical parameters..................................................................................................................................................... 10
3.2. Service distances K-roof section ..................................................................................................................................... 11
4. TRANSPORT ...................................................................................................................................................................... 12
4.1. Horizontal transport....................................................................................................................................................... 12
4.2. Lifting information......................................................................................................................................................... 12
5. FOUNDATION.................................................................................................................................................................... 13
5.1. Foundation Cube O unit ................................................................................................................................................. 13
5.2. Roof crossing (Cube O wit K-roof section) ...................................................................................................................... 14
5.3. Cube O with K-roof section installation .......................................................................................................................... 15
5.4. Installation of ceiling devices.......................................................................................................................................... 17
6. INSTALLATION .................................................................................................................................................................. 18
6.1. Hydraulic connection ..................................................................................................................................................... 18
6.2. Hydraulic hub chart for water heater / cooler .................................................................................................................. 19
6.3. Condensation drain........................................................................................................................................................20
6.4. Electric connection.........................................................................................................................................................20
6.5. Installation flow chart..................................................................................................................................................... 23
7. START-UP AND EXPLOITATION ........................................................................................................................................ 25
7.1. Gas heater ..................................................................................................................................................................... 25
7.2. Electric heater................................................................................................................................................................26
7.3. Water heat exchanger....................................................................................................................................................26
7.4. Water cooler ..................................................................................................................................................................26
7.5. Fans............................................................................................................................................................................... 27
7.6. Dampers ........................................................................................................................................................................ 27
7.7. Automation control systems .......................................................................................................................................... 27
7.8. Filter replacment............................................................................................................................................................ 27
8. RESPONSIBILITY TABLE ....................................................................................................................................................28
9. SERVICE AND WARRANTY ................................................................................................................................................29

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TECHNICAL DOCUMENTATION:
EN
1. IMPORTANT INFORMATION
This manual contains important information about preventing possible accidents and damage to Cube O units during operation.
Special care should be taken during all actions with the unit and obey to this manual and all technical data. FLOWAIR shall not be
responsible for any omissions and damages caused by them.
In the manual you will find warnings and important tip marked as below:
Threat of loss of life or
health or permanent
damage to the unit.
Risk of electric shock.
Warnings regarding
unauthorized use of Cube O
devices. Unsafe practices,
the occurrence of which may
result in property damage or
minor personal injury.
Advice and
information on how to
use Cube devices.
SAFETY INFORMATION:
It is prohibited to use Cube units for industrial vacuum caused by renovations or other construction
works when dust, harsh or explosive compounds are emitted.
The device is dedicated to work with air with a maximum dust content of 0,3 g/m3.
The appliance presents a risk of injury from rotating parts.
The appliance presents a risk of injury from sharp edges and considerable weight.
The appliance presents a risk of injury from high and low temperature elements.
The appliance presents a risk of injury from burns from high-temperature exhaust fumes.
Prior to start operations it is essential to switch off the unit with main switch.
Prior to open casing it is essential to assure that electricity is disconnected and secured against
accidental switching on by other persons.
Electrical equipment should be connected to a fixed electrical installation equipped with means for
disconnection from the power source, having contact gaps in all poles, ensuring full disconnection in
overvoltage category III conditions.
Cube O units must not be used by children or adults with reduced mobility, or limited mental abilities.
Cube O units must not be used by non-trained users or who are not familiar with this manual.
Cube O unit must be used in accordance with its intended use.
All installation or service works must be done by qualified staff with proper attestations for electricity.
Staff should wear suitable protective equipment (helmet, glasses, gloves, etc.).
During unit operation, some of its parts heat up over 60°C. Precautions shall be taken. Even after
switching off the unit, high temperature may persist which can lead to skin burns.
Do not touch water exchanger.
Do not touch electric heaters with skin under any circumstances.
In order to comply with CE regulations, only original spare parts accepted by the manufacturer can be
used.
After service works make sure that doors are closed.

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Before unit is launched make sure that all fans and moving parts won’t be interfered by any external
factors.
NAMEPLATE
Each Cube O unit is equipped with a nameplate glued under the main switch (the roof section) or near the automation cabinet (in
ceiling mounted configurations), as shown in the figure below:
The nameplate contains basic product information such as unit’s code allowing to determine configuration, serial number,
parameters and basic electrical and air flow parameters.

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2. GENERAL INFORMATION
2.1. Cube O application
The Cube O devices, due to their modular construction, can be equipped with all the necessary systems for heating, cooling, and
single-direction ventilation of rooms. Depending on the type and size of the Cube O device, it can be applied in the following
facilities:
large industrial buildings.: production or storage halls, printeries, logistic centers,
commercial buildings (shopping malls, supermarkets, petrol stations, car showrooms),
public buildings such as: cinemas, theatres, gyms.
2.2. Device configuration
Cube O units can be additionally equipped with a heater or cooler to increase or cool down the air temperature at the outlet. There
is water heater, electric and gas modulating heater or water cooler. Unit’s size, together with types and optional equipment
creates range described according to chart below:
1
Type
2
Model
OR
Recirculation device
ON
Supply device
ORK
Recirculation device with roof section
ORK
Supply device with roof section
ORNK
Recirculation and supply unit with roof section
3
Source of heat / cold
N
No heater/cooler
W2
2-row water heater
W3
3-row water heater
C2
2-row water cooler-heater
C3
3-row water cooler-heater
G[xx]
Gas heater [nominal heating power in kW]
E[xx]
Electric heater [nominal heating power in kW]
4
Fan type
A
EC axial fan
2A
2x EC axial fan
P1
EC radial fan size 1
P2
EC radial fan size 2
P3
EC radial fan size 3
P4
EC radial fan size 4
5
Supply module
D
Swirl diffuser with actuator
V[x]
Ventilation ducts connections [number of duct connections]
J[x]
Long range nozzles [number of air nozzles]

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Full unit’s configuration is set on ordering process, leaded by our Sales Department or Project Support Department
consultations.
2.3. General characteristics construction Cube O
1. K-Roof section (ORK, ONK, ORNK)
2. Axial fan section (A, 2A)
3. Water cooler section (C2, C3)
4. Radial fan section (P1, P2, P3, P4)
5. Electric heater section (E)
6. Water heater section (W2, W3)
7. Supply module (D, V, J)

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2.4. General characteristics construction of the Cube ORNK configuration with the roof section
1. EC radial fan
2. Recirculation damper
3. Fresh air filter
4. Recirculation air filter
5. Gas heater (Cube O –G)
6. Acoustic silencers
7. Housing with insulation
8. Possible supply module configurations
D - swirl diffuser with actuator
V - ventilation ducts connections
3J - long range nozzles
2.5. General characteristics construction of the Cube OR
1. EC axial fan
2. Water heater
3. Housing with insulation
4. Possible supply module configurations
D - swirl diffuser with actuator
V - ventilation ducts connections

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3. TECHNICAL DATA
3.1. Technical parameters
Options
Model
OR
ON
ORNK
ONK
ORK
Nominal air flow
m3/h
12 000
12 000
12 000
12 000
12 000
Water heater
[-]
available
available
available
available
available
Water cooler
[-]
available
available
available
available
available
Electric heater
[-]
on request
on request
on request
on request
on request
Gas heater
[-]
available
available
available
Filters
[-]
Coarse 80% (~G4) / ePM2,5 65% (~F7) / ePM10 50% (~M5)
Construction data
Construction
Thermal insulation class
-
M0
Casing / middle panel color
-
RAL 7035
Casing
-
insulated panels with 50 mm mineral wool
Main frame
-
steel, integrated
Weight
kg
>60
<460
Electrical data
Electrical data
Max. power consumption
kW
on request
Max. current consumption
A
on request
Power supply
V/Hz
3x400/50
Optional data
Water heater (Cube W)
Type of exchanger
-
2-row / 3-row
Nominal heating power (1)
kW
14,0 –68.3 / 16,8 –100,8
3J - long range nozzles

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Connection
″
G 1″external
Water cooler (Cube C)
Type of exchanger
-
2-row / 3-row
Nominal cooling power (2)
kW
10,0 –22.7 / 14,4 –33,4
Connection
″
G 1″external
Electric heater (Cube E)
Nominal heating power
kW
on request
Heating degrees
-
on request
Gas heater technical data (3)
Gm20
Gm34
Gm45
Gm65
Nominal heating power
kW
18,2
33,6
40,5
62,9
Gas consumption (G20)
m3/h
2,01
3,69
4,44
6,88
Flue gas exhaust system
-
integrated
Gas connection
″
GZ 3/4”
GZ 3/4”
GZ 3/4”
GZ 3/4”
Minimum air flow
m3/h
3000
3500
4200
6500
(1) heating factor's temperature 70/50°C and inlet air temperature 8°C
(2) cooler factor's temperature 7/12°C and inlet air temperature 26°C / 50%
(3) data refer to G20 gas supply
3.2. Service distances K-roof section
In the configuration with the roof section, it is important to pay special attention to maintaining a greater distance on the inspection
side, as shown in the diagram below.
The dimensions given are only minimal ones, necessary for any service works and do not reflect the distance
between unit’s inlet and outlet and buildings determined by law regulation in certain country..
If the device is installed on a flat roof (<5%) at a height of more than 50 cm, safe service access to the device must
be ensured through the use of a service platform.
Make sure there is easy service access to the connection stub.
Minimal required service distance
A
min. 0,5 m
B
min. 1,5 m
C
min. 0,5 m

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D
min. 0,5 m
4. TRANSPORT
The K-roof section has been designed for transport with an integrated frame that allows for lifting the unit using a forklift.
Additionally, K-roof section and room section are equipped with transport handles for lifting with ropes.
Please follow below regulations during transport:
Before unloading the transport, complete the handover protocol.
Please check parcel completion and unit state immediately after delivery (T-box - option, three-way valve with actuator
–option, room temperature sensor). In case of any irregularities a damage protocol should be written down. This can
help claiming indemnities from shipping company later.
Unloading should be done with forklift (using frame handles or palette where unit is mounted) or a lift (using handles on
unit’s casing).
During transport or storage, the unit must stand on integrated frame or palette where unit is mounted. Leaving unit in
different way may lead to its damage.
After unloading, during waiting for installation, a cover protecting from external factors must be used.
The manufacturer is not responsible for damages caused by not following the guidelines written in the manual or for
transport irregularities.
4.1. Horizontal transport
The Cube O devices are prepared for transport using a forklift. The integrated frame of the K-roof section or the pallet on which the
room section is mounted allows for easy transportation with a forklift.
Because of unit’s weight and front-end center of gravity, the size of the forklift and length of truck forks must be adapted
to unit’s dimension. Pay special attention to the length of truck forks. Shorter truck forks application may result in
damage to the unit or accident what the manufacturer is not responsible for.
4.2. Lifting information
When lifting the Cube O, follow these rules:
Make sure that the ropes are properly attached to all holders,
Make sure that the device is level during lifting,
Be especially careful when removing from the truck, so as not to damage the device by hitting the trailer elements,
Be careful not to hit the device with any other objects,
Do not lift the device at excessive speed,
Do not change direction abruptly,

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Be especially careful when setting the device on a structural frame or a roof base.
Do not stand under the device during lifting.
The manufacturer is not responsible for damages caused by not following the guidelines written in the manual or for
transport irregularities.
Before lifting, check that the locks on all service panels are closed and verify by pulling the handles.
Before placing the K-roof section on the room section, unscrew the transport lugs.
5. FOUNDATION
5.1. Foundation Cube O unit
Cube O units are built on self-supporting frame, which should be installed on brackets or frames connected to the roof, according
to construction law in specific country and must be ousted from roof slope to a height determined by this law. The manufacturer
determines unit’s installation on the unit’s contour in accordance with frame dimensions listed below. The manufacturer allow
installing on a supported frame on two longer sides of unit’s frame.
K-roof section
demonstrative solution
A1 [mm]
max. 1400 *
A2 [mm]
min. 1200
B1 [mm]
max. 1400 *
B2 [mm]
min. 1200

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Unit should be mounted to a frame in such way to ensure no move of unit. Using rubber pads between unit and frame is
highly advisable.
Install unit in such way that inlet is not directed to windward.
The manufacturer allows installation on a frame with support on the two long sides of the unit's frame.
The K-roof section is attached to the base using the assembly screws provided in the kit.
5.2. Roof crossing (Cube O wit K-roof section)
For the Cube O with the K-roof section, as additional accessories there is a base that serves as a roof transition and an adapter for
the room section. The base supporting frame, under which the substructures shown in the drawing [1] should be designed.
A hole in the roof should be made in order to mount the roof base duct with the room section. The hole should be made in
accordance with the guidelines contained in the figures [2], [3].
1. 2.
3.

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Device should be attached to the frame in a way that prevents any movement. It is recommended to use rubber spacers
between the device and the mounting frame.
Install unit in such way that inlet is not directed to windward.
5.3. Cube O with K-roof section installation
During the foundation, pay attention to the correct assembly in relation to the ducts.
A
Supply channel
B
Exhaust channel

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Before placing the K-roof section on the room section, unscrew the transport holders. Then, through the prepared openings, route
the power and control cables from the supply air module to the device control cabinet as described below.
Through the prepared openings, route the power and control cables from the room section to the device control cabinet in K-section
[1].
(bottom K-section view)
(bottom view)
Open the service panel and route cables as shown in the figure [2].
The K-roof section is attached to the base using the assembly screws provided in the kit.
Before placing the K-section on the base it is necessary to lead the cables from room section to the control cabinet.
It is necessary to seal the area of connection between the room section and roof section.

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5.4. Installation of ceiling devices
The Cube O device, designed for indoor installation, is suitable for horizontal mounting using 4 pieces of M10 threaded studs. The
installation process should begin by preparing 4 mounting holes in the ceiling according to the provided diagram.
969
969
M10

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The mounting studs should be installed in the solid ceiling using, for example, expansion anchors or chemical anchors, and then
secure the device according to the following diagram.
1 –Ceiling
2 –Expansion anchor or chemical anchor
3 –M8 threaded rods
4 –M8 bolt with a washer
5 –Mounting brackets
The ceiling must have sufficient load-bearing capacity.
The device must be leveled.
The manufacturer does not provide the mentioned mounting accessories.
6. INSTALLATION
6.1. Hydraulic connection
Cube units in configuration with a water heat exchanger are equipped with a three-way mixing valve. The three-way valve is
transported in the device control cabinet. The valve should be installed in accordance with the hydraulic diagram of this manual.
During assembly of the installation it is absolutely necessary to immobilize the exchanger's connector pipes (counter).
Water heater

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Water cooler
A water filter must be installed. It is required to protect the hydraulic system.
Make sure there is easy service access to the connection stub.
6.2. Hydraulic hub chart for water heater / cooler
NWS-W / NWL-W
ZK ZO
ZK
ZKZR
ZK
ZD
FS
B
AAB
Z3d
TM
ZK –shut-off valve
ZO –vent valve
ZD –drain valve
TM –temperature sensor
ZR –regulating valve
FS –mesh filter
Z3d –3-way valve with actuator
To avoid water exchanger damage caused by freezing, if electrical power is not available, glycol must be used as a
refrigerant.

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Units are equipped with a passive frost protection system.
6.3. Condensation drain
Cube O units can are equipped with water cooler. Condensate precipitation is possible. The Cube unit’s in the set are equipped with
a condensation drain and a siphon.
Please ensure proper drainage of excess condensate to the plant’s plumbing installation according to pictures below.
Remember to periodically check the water level in the siphon.
It is necessary to install the condensate drainage on your own.
6.4. Electric connection
Before installing the unit make sure that the system is disconnected from power supply. Units should be powered with power cords
of proper diameter resulting from the length, method of routing and unit’s rated power.
The following pictures show where to route the power cord for each device.
Cube OR-W-A-D
Lead the power cord of the device to the power supply and control cabinet. Next, the cable should be connected to the ZUG
terminals as described in the further part of the description.
Cube OR-W/C-P-D