Turbovex TX 250A User manual

Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] - email: [email protected]k
www.turbovex.com
Installation, Operation and
Maintenance Manual
TX 250A
TX 500A
TX 750A
TX 1000A
Rev. 2023.10.23

Page 2 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – email: [e-mail] –
www.turbovex.com
1.0 Table of contents
1.0 Table of contents ....................................................................................... 2
2.0 General information .................................................................................. 3
2.1 Introduction..........................................................................................................................3
2.2 Fields of application .............................................................................................................3
2.3 Misuse ..................................................................................................................................3
2.4 Contents of delivery .............................................................................................................3
2.5 Operating principle...............................................................................................................4
2.6 Main components: ...............................................................................................................5
3.0 Installation................................................................................................. 6
3.1 Dimensions ...........................................................................................................................6
3.2 Placement.............................................................................................................................7
3.3 Minimum distance................................................................................................................9
3.4 Wall- or ceiling mounted unit ............................................................................................10
4.0 Connection............................................................................................... 16
4.1 Water connection...............................................................................................................16
4.2 Frost protection of water heating coil ...............................................................................16
4.3 Power connection ..............................................................................................................18
4.4 Power connection for accessories .....................................................................................19
5.0 Technical specifications............................................................................ 20
6.0 Operation ................................................................................................ 21
6.1 Regulation of airflow..........................................................................................................21
6.2 Heat regulation...................................................................................................................21
6.3 Master / slave.....................................................................................................................21
7.0 Service ..................................................................................................... 22
7.1 Change of filter...................................................................................................................22
7.2 Cleaning of heat exchanger................................................................................................23
8.0 Declaration of conformity........................................................................ 24

Page 3 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – email: [e-mail] –
www.turbovex.com
2.0 General information
2.1 Introduction
This user manual contains technical information about installation, operation and
maintenance of the unit.
2.2 Fields of application
TX Comfort is designed for comfort ventilation in institutions, offices, dining spaces,
conference rooms and indoor spaces occupied by people.
2.3 Misuse
TX Comfort is designed for the living spaces described above in section 3.2.0. The system
is not designed for the purpose of local exhaust ventilation.
2.4 Contents of delivery
The TX Comfort unit is delivered with the following main components:
1.
Turbovex TX Comfort unit
2.
Suspension bracket
3.
TX electronic controller
1
.
2
.
3
.

Page 4 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – email: [e-mail] –
www.turbovex.com
2.5 Operating principle
Turbovex TX Comfort is a decentralized ventilation system with built-in heat recovery for
ventilation of comfort rooms in particular in indoor living spaces.
TX Comfort operates with an aluminium counter flow heat exchanger (5) to ensure maximum
heat recovery. The unit utilizes warm indoor air to heat up inflowing fresh outdoor air. The
counter flow heat exchanger’s sole function is for heat retention.
Airflow:
The air supply ventilator (6) (Figure 2) creates inflow of fresh outdoor air through the filter
(10), leading the inflow through the heat exchanger (5), and further through the air supply
grate (4) and out into the room.
At the same time the air exhaust ventilator (7) creates outflow of indoor air leading it through
the exhaust pipe (2) and further out to the open air outside.
The desired temperature of the air supply is regulated on the control panel. A sensor records
the actual temperature of the flowing air supply. If the temperature is lower than the setpoint,
the control system reduces the flow of the air supply warming it as it flows through the heat
exchanger.

Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] - email: [email protected]k
www.turbovex.com
2.6 Main components:

Page 6 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – email: [e-mail] –
www.turbovex.com
3.0 Installation
3.1 Dimensions
Dimension [mm]
TX 250A
TX 500A
TX 750A
TX 1000
A
595
828
895
1050
B
403
493
565
665
C
500
710
766
917
D
313
382
442
542
E
1156
1506
1767
2067
F
1141
1491
1750
2050
G
1200
1550
1800
2100
H
906
1156
1355
1630
I
135
189
210
235
J
160
205
235
235
K
137
187
203
253
L
280
350
390
465
M
185
245
280
310

Page 7 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – email: [e-mail] –
www.turbovex.com
3.2 Placement
The unit is generally placed on a wall directly under the ceiling. This location best exploits
the coanda effect as it leads the air further into the room along the surface of the ceiling. In
this way inflowing air can mix with the room’s existing air for a longer period of time and
thereby prevent draught. This location, as the point for supply and exhaust airflow, provides
optimal circulation within a room.
Standard placement
The TX Comfort series also has the possibility of locating the unit in false ceilings. In this
way, the unit is less visible.
Installation in false ceiling

Page 8 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – email: [e-mail] –
www.turbovex.com
The TX Comfort series offer the possibility of installing ducts through the wall or the roof.
Fresh air can also flow in through a wall duct while exhaust air flows out through the roof.
This results in optimal conditions in comparison to a set up with close proximity between
the air supply and the air exhaust.

Page 9 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – email: [e-mail] –
www.turbovex.com
3.3 Minimum distance
Minimum allowed distance between the unit and walls, cupboards or other surfaces.
It is important to check that there is sufficient space for the sides of the unit to be fully opened
during installation. The minimum distance must be the length L as indicated in the illustration
above.
Dimension(mm)
TX 250A
TX 500A
TX 750A
TX 1000A
E
1156
1506
1767
2067
L
600
850
950
1100

Page 10 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – email: [email protected]k –
www.turbovex.com
3.4 Wall- or ceiling mounted unit
When the unit is wall- or ceiling mounted, the required outward free space from the centre
of each of the two ducts must be the distance M
The location of the suspension bracket and the measurements for mounting the bracket are
indicated in the illustrations below.
Dimension[mm]
TX 250A
TX 500A
TX 750A
TX 1000A
M
142
192
209
259
N
906
1156
1355
1630
O
137
187
218
218
P
112
162
193
218
Q
137
187
203
253
The location of the unit in relation to the ducts (Please note that the unit is viewed from the
rear in the figure below).
Wall-mounted with wall ducts
Ceiling-mounted with ceiling ducts

Page 11 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – email: [email protected]k –
www.turbovex.com
Install the suspension bracket on either the wall or the ceiling. Use the measurements to
pinpoint where to create the ducts and where to mount the bracket.
It is important that the ”MIN” measurement is followed carefully so that the unit has
enough space to be mounted on the bracket.
Dimension(mm)
TX 250A
TX 500A
TX 750A
TX 1000A
MIN
13
13
15
15
M
129
179
194
243
1
89
139
168
193
2
995
1295
1523
1823
3
1108
1458
1716
2016
4
142
192
209
258

Page 12 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – email: [email protected]k –
www.turbovex.com
Drill two holes, 5 to 10 mm bigger than the ducts (R) through the wall or the ceiling. It is
important to observe all the minimum measurements described in section 3.3 Minimum
distance.
Loosen the two finger screws to open the doors on each side. Remove the suspension
bracket and mount it on the wall or the ceiling.
Place the unit on the bracket and mount it with the included 4 bolts.
Dimension(mm)
TX 250A
TX 500A
TX 750A
TX 1000A
R
160
250
315
315
Finger screws
Suspension bracket

Page 13 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – email: [email protected]k –
www.turbovex.com
Mount the ducts. If mounted on the facade, there must be a descending gradient of 1-2%
toward the outside to avoid penetration of heavy rainwater into the unit.
Mount the outside facade grates. Mount the grate of the air exhaust with the lamellas facing
sideways. The sideways direction should be oriented in the direction away from the air
supply. Mount the grate of the air supply with the lamellas facing downwards.

Page 14 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – email: [email protected]k –
www.turbovex.com
Connect the power supply according to the included electrical diagram.
It is important to seal the ducts at the spigot of the unit; otherwise, false air will penetrate
the unit.
The ducts must under no circumstances be twisted or pressed against the installation
collars of the unit, as it will cause an increased noise level of up to +6dB. Make sure that
the duct holes leave enough room for insulation with Rockwool or insulation foam.
The power connection must be performed by a professional electrician

Page 15 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – email: [email protected]k –
www.turbovex.com
There are two different approaches of locating the main circuit board.
1. Open the left-hand side of the unit and remove the service hatch.
2. Remove the front panel.
The front panel can be removed by loosening the set screws with an Allen key.
The main circuit board will be found in the left side of the unit.
See 2.6 Main components
Mount the front panel and/or sides and the unit is ready for use. Make sure to tighten the
set screws, otherwise leakage may occur in the unit.
Set screw

Page 16 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – email: [email protected]k –
www.turbovex.com
4.0 Connection
4.1 Water connection
Refer to 4.2 Frost protection of water heating coil before connecting the water.
It is recommended to use a Danfoss FV filter on the inlet to the unit to prevent blockage of
the water heater.
NB! The connections are made to the units fixed connections.
4.2 Frost protection of water heating coil
To ensure safe frost protection of water heating coil with the built and factory-tested
automatic, the heating coil must always be connected to central heating systems with:
•Flow temperature which is never below + 40°C when freezing weather.
•Water flow in heating coil which is never less than 20 liters. hour at flow
temperature of +40°C when freezing weather.
The radiator thermostat inside the unit is, as antifreeze, locked to an air temperature of
approx. 14°C. This causes the radiator thermostat opens if the air temperature drops below
14°C, ensuring water flow through the heating coil, when the system is in standby. If you
change this setting, there is a risk that the heating coil can cause frost damage.
Water connection 3/8"
Outlet
Inlet

Page 17 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – email: [email protected]k –
www.turbovex.com
Warning for frost protection of water heaters
The hot water floor heating system must never be connected to central heating systems
where the heat supply is shut off, for instance during weekends and holiday periods,
causing the supply temperature to drop below +40°C in freezing weather.
If the flow temperature is below +40°C there is a risk of frost damage on the heating coil,
because the heating coil is placed in the inlet from the outdoor air, where the heating coil
(along with air-to-air heat exchanger) during normal operation, heat the clean outdoor air
for comfort temperature.
Water heating coil should never be connected to central heating systems where the water
flow through the heating coil is interrupted – i.e. central heating systems with circulation
pump is stopped or switched on for low pump pressure at night setting.
Please also refer to the label that is affixed to the unit:
.
Important!
Connection to units with water heating.
The heating element is secured against bursting
from frost down to -12°C, when the value at the
scale of the thermostat is set to min. “1,5”
The difference pressure must be at least 0,3 bar
and max 0,9 bar, which can be secured by
adding a regulator in the main circuit of the
system. If the difference pressure is less than
0,3 bar it will infer on the closing speed of the
servo valve.

Page 18 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – email: [email protected]k –
www.turbovex.com
4.3 Power connection
Connection of Turbovex TX Comfort according to the circuit diagram
The power connection must be performed by a professional electrician
A circuit breaker must be installed in front of the ventilation system

Page 19 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – email: [email protected]k –
www.turbovex.com
4.4 Power connection for accessories
Connection of Turbovex TX Comfort according to the circuit diagram
The power connection must be performed by a professional electrician

Page 20 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – email: [email protected]k –
www.turbovex.com
5.0 Technical specifications
Air flow indicates the balanced air renewal in relation to the motor voltage and is stated as m3/h.
Contact the distributor if the unit is to be used with forced operation.
The sound level is indicated in decibels (dB) in relation to the air renewal, measured at 1 meter in
front of and 1 meter directly below the air supply grate. By way of comparison, whispering
corresponds to 30 dBA, ordinary spoken conversation corresponds to 60 dB and street traffic to
about 90 dBA.
The temperature efficiency on the exchanger is indicated as a percentage (%) and is expressed
as the ratio between the obtained temperature difference and the maximum achievable
temperature difference.
TX 250A
TX 500A
TX 750A
TX 1000A
Unit
Dimension:
Lenght
Width
Height
1200
595
403
1550
828
493
1800
895
565
2100
1050
665
mm
Duct:
2x Ø160
2x Ø250
2x Ø315
2x Ø315
mm
Weight:
35
57
99
122
kg
Capacity:
Min
Max
Forced
100
250
480
300
500
800
350
750
1100
500
1000
1600
m³/h
Sound:
Min
Max
Forced
26
35
50
25
35
53
25
35
50
27
35
48
dB(A)
Filter:
F5
F5
F5
F5
Filter class
Energy consumpon (motor)
Min
12,6
454
9,8
118
28,5
293
14
101
Was
J/m³
Max
28
403
65
468
78
374
150
540
Was
J/m³
Forced
110
825
113,6
511
185
605
199
448
Was
J/m³
Output(motor):
2 x 71
2 x 90
2 x 170
2 x 175
Was
Power supply:
1 x 230/50
1 x 230/50
1 x 230/50
1 x 230/50
Volt/Hz
Temperature eciency:
80,6
84,5
78
80,6
%
Electric heang surface:
(opon):
400
650
1000
1250
Was
Water heang surface:
(opon):
340
670
1260
1340