Turbovex TX 250A General instructions

Page 1 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – Fax: [phone]
e-mail: [email protected] – www.turbovex.dk
Installation, Operation and
Maintenance Manual
TX 250A TX 500A TX 750A TX 1000A
Rev. 2012.11.06

Page 2 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – Fax: [phone]
e-mail: [email protected] – www.turbovex.dk
1.0.0 Table of contents
1.0.0 TABLE OF CONTENTS ........................................................................................................................................2
2.0.0 ILLUSTRATIONS ..................................................................................................................................................2
3.0.0 GENERAL INFORMATION.................................................................................................................................3
3.1.0 FOREWORD ........................................................................................................................................................3
3.2.0 FIELDS OF APPLICATION ................................................................................................................................3
3.3.0 MISUSE................................................................................................................................................................3
3.4.0 CONTENTS OF DELIVERY ...............................................................................................................................3
3.4.0 OPERATING PRINCIPLE...................................................................................................................................4
3.5.0 MAIN COMPONENTS:.......................................................................................................................................5
4.0.0 INSTALLATION.....................................................................................................................................................6
4.1.0 SCALE ILLUSTRATION.....................................................................................................................................6
4.2.0 LOCATION..........................................................................................................................................................7
4.2.1 MINIMUM DISTANCE.......................................................................................................................................9
4.2.2 WALL- OR CEILING-MOUNTED UNIT ...........................................................................................................9
4.3.0 INSTALLATION OF UNIT................................................................................................................................11
4.3.1 INSTALLATION WITH 2DUCTS....................................................................................................................11
5.0.0 CONNECTION......................................................................................................................................................16
5.1.0 WATER CONNECTION....................................................................................................................................16
5.1.1 FROST PROTECTION OF WATER HEATING COIL .....................................................................................16
5.2.0 POWER CONNECTION....................................................................................................................................18
5.3.0 POWER CONNECTION FOR ACCESSORIES ................................................................................................19
6.0.0 TECHNICAL SPECIFICATIONS ......................................................................................................................20
6.1.0 VENTILATION SYSTEM .................................................................................................................................20
7.0.0 OPERATION.........................................................................................................................................................21
7.1.0 REGULATION OF AIRFLOW..........................................................................................................................21
7.2.0 HEAT REGULATION........................................................................................................................................21
7.3.0 MASTER /SLAVE.............................................................................................................................................21
8.0.0 SERVICE ...............................................................................................................................................................22
8.1.0 CHANGE OF FILTER........................................................................................................................................22
8.2.0 CLEANING OF EXCHANGER.........................................................................................................................23
9.0.0 DECLARATION OF CONFORMITY................................................................................................................24
2.0.0 Illustrations
FIGURE 1CONTENTS OF DELIVERY .............................................................................................................................3
FIGURE 2MAIN COMPONENTS......................................................................................................................................5
FIGURE 3SCALE ILLUSTRATION...................................................................................................................................6
FIGURE 4LOCATION, CONVENTIONAL.......................................................................................................................7
FIGURE 5LOCATION IN AFALSE CEILING..................................................................................................................7
FIGURE 6MINIMUM DISTANCE.....................................................................................................................................9
FIGURE 7WALL-MOUNTED WITH WALL DUCTS………..........................................................................10
FIGURE 8CEILING-MOUNTED WITH CEILING DUCTS…........................................................................................10
FIGURE 9LOCATION OF DUCTS...................................................................................................................................10
FIGURE 10 MEASUREMENTS FOR MOUNTING THE SUSPENSION BRACKET OF ATX COMFORT UNIT......11
FIGURE 11 WATER CONNECTION................................................................................................................................16
FIGURE 12 CIRCUIT DIAGRAM.....................................................................................................................................18
FIGURE 13 CIRCUIT DIAGRAM FOR ACCESSORIES.................................................................................................18

Page 3 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
Telefon: [phone] – Fax: [phone]
e-mail: [email protected] – www.turbovex.dk
3.0.0 General information
3.1.0 Introduction
This user manual contains technical information about installation, operation and
maintenance of the unit.
3.2.0 Fields of application
TX Comfort is designed for comfort ventilation in institutions, offices, dining spaces,
conference rooms and indoor spaces occupied by people.
3.3.0 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.
3.4.0 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
Figure 1 Contents of delivery
1.
2.
3.

Page 4 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
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3.4.0 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.

Page 5 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
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3.5.0 Main components:
Figure 2 Main components

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Turbovex A/S
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4.0.0 Installation
4.1.0 Scale illustration
Figure 3 Dimension Drawing
Dimension [mm] TX 250A TX 500A TX 750A TX 1000
A
A 595.00 828.00 895.00 1050.00
B 403.00 493.00 565.00 665.00
C 500.00 710.00 766.00 917.00
D 313.00 382.00 442.00 542.00
E 1155.50 1505.50 1766.50 2066.50
F 1141.00 1491.00 1750.00 2050.00
G 1200.00 1550.00 1800.00 2100.00
H 906.00 1156.00 1355.00 1630.00
I 134.50 189.00 210.00 235.00
J 159.50 205.00 235.00 235.00
K 136.60 186.60 202.50 252.50
L 280,00 350,00 390,00 465,00
M 185,00 245,00 280,00 310,00

Page 7 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
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4.2.0 Location
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.
Figure 4 Location, conventional
The TX Comfort series also has the possibility of locating the unit in false ceilings. In this
way, the unit is less visible. Figure 5 Location in a false ceiling

Page 8 of 24
Turbovex A/S
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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] – Fax: [phone]
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4.2.1 Minimum distance
Minimum allowed distance between the unit and walls, cupboards or other surfaces.
Figure 6 Minimum distance
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.
4.2.2 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 (see Figure 7 and 8.)
The location of the suspension bracket and the measurements for mounting the bracket
are indicated in the illustrations below.
Mål TX 250A TX 500A TX 750A TX 1000A
E 1155.50 1505.50 1766.50 2066.50
L 600.00 850.00 950.00 1100.00

Page 10 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
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Figure 7 Wall-mounted with wall ducts Figure 8 Ceiling-mounted with ceiling ducts
The location of the unit in relation to the ducts (Please note that the unit is viewed from the
rear in the figure below). Figure 9 Location of ducts
Mål TX 250A TX 500A TX 750A TX 1000A
M 142.00 192.00 209.00 259.00
N 906.00 1156.00 1355.00 1630.00
O 137.25 187.25 218.25 218.25
P 112.25 162.25 193.25 218.25
Q 136.60 186.60 202.50 252.50

Page 11 of 24
Turbovex A/S
Industrivej 45, DK – 9600 Aars
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4.3.0 Installation of unit
4.3.1 Installation with 2 ducts
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.
Figure 10 Measurements for mounting the suspension bracket of a TX Comfort unit
It is important that the ”MIN” measurement is followed carefully so that the unit has enough
space to be mounted on the bracket.
Mål TX 250A TX 500A TX 750A TX 1000A
MIN 13.00 13.00 15.00 15.00
M 129.00 178.50 194.00 243.00
1 88.50 138.50 168.00 192.50
2 994.50 1294.50 1523.00 1822.50
3 1108.00 1458.00 1716.00 2016.00
4 142.00 191.50 209.00 258.00

Page 12 of 24
Turbovex A/S
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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 4.2.1 Minimum
distance.
Mål TX 250A TX 500A TX 750A TX 1000A
R 160.00 250.00 315.00 350.00

Page 13 of 24
Turbovex A/S
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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.
Finger screws
Suspension bracket

Page 14 of 24
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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.
Connect the power supply according to the included electrical diagram.
Note!
It is important to seal the ducts 100% at the spigot of the unit; otherwise
false air will penetrate the unit.
The ducts must on no account be twisted or pressed against the installation
collars of the unit, as it will cause an increased noise level of up to +6dB. Be
sure that the duct holes leave enough room for insulation with rockwool or
insulation foam.

Page 15 of 24
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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 figure 2 page 5.
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
Note!
The power connection must be performed by a professional electrician.

Page 16 of 24
Turbovex A/S
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Water connection 3/8" Outlet
Inlet
5.0.0 Connection
5.1.0 Water connection
Refer to Section 5.1.1 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 unit fixed connections, see Fig. 11
Figur 11 Water connection
5.1.1 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.

Page 17 of 24
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Important!
Connection to units with water heating.
The difference pressure must be at least 0.3 bar and max.
0.9 bar, wich can be secured by adding a regulator in the
systems main circuit
If the difference pressure is less than 0.3 bar, it will infer
on the closing speed of the servo valve.
The heating element is secured against bursting from frost,
down to -12 °C, when the value at the scale of the
thermostate is set to min. 1,5""
Warning for frost protection of water heaters
Water heating coil should never be connected to central heating systems, which closed for
heat supply - eg. in weekend and holiday periods, so the flow temperature falls below
+40°C by 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:

Page 18 of 24
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5.2.0 Power connection
Connection of Turbovex TX Comfort according to the circuit diagram, see Fig. 12
Figure 12 Circuit diagram
Note!
The power connection must be performed by a professional electrician.
Note!
A circuit breaker must be installed in front of the ventilation system.

Page 19 of 24
Turbovex A/S
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5.3.0 Power connection for accessories
Connection of Turbovex TX Comfort according to the circuit diagram, see Fig. 13
Figure 13 Circuit diagram for accessories
Note!
The power connection must be performed by a professional electrician.

Page 20 of 24
Turbovex A/S
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6.0.0 Technical specifications
6.1.0 Ventilation system
Air flow indicates the balanced air renewal in relation to the motor voltage and is stated as m3/h.
The control unit has 4 levels. Level 4 gives maximum capacity. The standard setting of the unit is
the maximum capacity (see the diagram below). 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 a distance
of 1 meter in front of and 1 meter directly below the air supply grate. By way of comparison it may
be mentioned that 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. This is, specifically, the outdoor
temperature minus the air supply temperature divided by the outdoor temperature minus the room
temperature, expressed as a percentage.
Unit: TX 250A TX 500A TX 750A TX 1000A Unit
Dimension:
S Length 1200 1550 1800 2100 mm
Depth 595 828 895 1050 mm
Height 403 493 565 665 mm
Duct: 2 x 160 2 x 250 2 x 315 2 x 315 mm
Weight: 32 41 80 95 Kg
Capacity:
Min 100 300 350 500 m³/h
Max 250 500 750 1000 m³/h
Forced 480 800 1100 1600 m³/h
Sound:
Min 26 25 25 27 dB(A)
Max 35 35 35 35 dB(A)
Forced 50 53 50 48 dB(A)
Filter: F5 F5 F5 F5 Filter class
Energy consumption (motor):
12,6 9,8 28,5 14 Watts
Min 454 118 293 101 J/m³
28 65 78 150 Watts
Max 403 468 374 540 J/m³
110 113,6 185 199 Watts
Forced 825 511 605 448 J/m³
Output (motor): 2 x 71 2 x 90 2 x 170 2 x 175 Watts
Power supply: 1 x 230/50 1 x 230/50 1 x 230/50 1 x 230/50 Volt/Hz
Temperature efficiency: 80,6 84,5 78 80,6 %
Electric heating surface
(option): 400 650 1000 1250 Watt
Water heating surface
(option): 340 670 1260 1340 Watt