X-CUBE ROOMAIR-V-ZAB/SEK-HE

Construction KL (room view)

Tested to VDI 6022

Conforms to VDI 6022

Cross counter flow heat recovery unit

Revision filter and cross-counterflow heat recovery unit

Water and electrical connection

Optional control FSL-CONTROL III

Part number A00000075513

X-CUBE ROOMAIR-V-ZAB/SEK-HE

SUPPLY AND EXTRACT AIR UNIT WITH SWITCHOVER OPTION TO SECONDARY AIR MODE, INCLUDING HEAT RECOVERY (HRU) AND HEAT EXCHANGER FOR VERTICAL INSTALLATION IN FRONT OF THE SILL

Ready-to-operate decentralised ventilation unit for comfortable room temperature control and ventilation of rooms

Acoustically optimised EC fans with low specific fan power, acc. to DIN EN 16798-3 SFP = 0
Cross-counterflow heat recuperator (heat recovery efficiency 83 %)
With highly efficient 2- or 4-pipe heat exchanger for heating and/or cooling
Mirror image version possible
Condensate drip tray with condensate drain
Year-round use of the HRU possible (condensate connection required on site)
Very low unit depth of only 260 mm
Unit floor space approx. 0.16 m²
Reduction of fine dust and pollen contamination due to integral filters that conform to VDI 6022 3 filter class ISO ePM1 65 %/ISO Coarse 50 %
Inspection access panel simplifies filter change and cleaning of the heat exchanger
Motorised shut-off dampers, normally closed (NC)
Automatic switching to secondary air mode (based on air quality)

Optional equipment and accessories

Control system FSL-CONTROL III, specially designed and modularly constructed for decentralised ventilation systems
Wood panelling covers in various colours, with TROX ventilation grilles for supply and extract air (self-assembly kit)

Technical information

Function, Technical data, Quick sizing, Specification text, Order code

1 Fixing brackets

2 Casing

3 Filter chamber cover

4 Inspection access panel

5 2- or 4-pipe heat exchanger

6 Condensate drip tray

7 Condensate drain

8 Levelling feet

9 Supply voltage connecting cable

10 Return screw connection (located in the flow)

11 Supply air temperature sensor

12 Control valve (located in return)

13 Network connection for service area

14 Screw connections for customer-side connections

15 Cross-counterflow heat recuperator

16 Outdoor air filter ISO ePM1 65 %

17 Extract air filter ISO coarse 50 %

18 Outdoor air temperature sensor (optional)

19 Seal on the wall side

SEH Single room exhaust air

SET Single room extract air

SRO Single room outdoor air

SRS Single room supply air

SEC Secondary air (optional)

Width	604 mm
Height	2200 mm
Depth	260 mm
Volume flow rate	75, 90, 120 m³/h (boost 150 m³/h)
Nominal volume flow rate	120 m³/h
Sound pressure level at nominal volume flow rate and 8 dB room attenuation	33 dB(A)
Sound power level	30 – 45 dB(A)
Heat recovery efficiency	83 %
Maximum operating pressure, water side	6 bar
Maximum operating temperature	75 °C
Supply voltage	230 V AC ±10 %, 50/60 Hz
Power rating	275 VA
Weight	70 kg

X-CUBE/ROOMAIR-V-ZAB/SEK-HE (design example 4-pipe isothermal version)Supply air volume flow m³/h 75 90 120 150
Total cooling capacity
W 220 260 360 450
Room cooling capacity
W 200 241 321 401
Air temperature inside the unit °C 26,7 26,7 26,9 27
relative humidity
% 54,3 54,3 53,7 53,4
Water content of dry air
g/kg 11,9 11,9 11,9 11,9
Supply air temperature °C 18 18 18 18
Condensate g/h
0
0
0
0
Chilled water flow rate l/h 50 80 130 180
Water temperature, inlet °C 16 16 16 16
Water temperature, outlet °C 19,7 18,8 18,4 18,1
Water side pressure drop kPa 1,5 3,4 7,9 13,9
Total heating capacity
W 140 170 240 340
Room heating capacity
W 78 78 100 70
Air temperature inside the unit °C 18,4 18,1 17,6 15,7
Supply air temperature °C 24,1 23,6 23,5 22,4
Condensate g/h 300 300 400 600
Hot water flow rate l/h 20 25 40 60
Water temperature, inlet °C 35 35 35 35
Water temperature, outlet °C 28,8 29,2 29,8 30,1
Water side pressure drop kPa 0,5 0,6 1,2 2,5
Sound power level Lw,a dB(A) 30 35 41 45
Sound pressure level including 8 dB room attenuation
dB(A) 22 27 33 37
Active power P_el
W 12 14 19 26

Air-side data Cooling mode:

Temperature/relative humidity outdoor air: 32 °C/40 %
Temperature/relative humidity room air: 26 °C/50 %

Air-side data Heating mode:

Temperature/relative humidity outdoor air: -12 °C/90 %
Temperature/relative humidity room air: 21 °C/40 %

X-CUBE/ROOMAIR-V-ZAB/SEK-HE (design example 4-pipe version active heating)

Supply air volume flow	m³/h	75	90	120	150
Total cooling capacity	W	220	260	360	450
Room cooling capacity	W	200	241	321	401
Air temperature inside the unit	°C	26,7	26,7	26,9	27
relative humidity	%	54,3	54,3	53,7	53,4
Water content of dry air	g/kg	11,9	11,9	11,9	11,9
Supply air temperature	°C	18	18	18	18
Condensate	g/h
Chilled water flow rate	l/h	50	80	130	180
Water temperature, inlet	°C	16	16	16	16
Water temperature, outlet	°C	19,7	18,8	18,4	18,1
Water side pressure drop	kPa	1,5	3,4	7,9	13,9
Total heating capacity	W	480	620	790	990
Room heating capacity	W	411	523	645	696
Air temperature inside the unit	°C	18,4	18,1	17,6	15,7
Supply air temperature	°C	37,4	38,4	37,1	34,9
Condensate	g/h	300	300	400	600
Hot water flow rate	l/h	40	80	130	180
Water temperature, inlet	°C	60	60	60	60
Water temperature, outlet	°C	49,5	53,3	54,7	55,2
Water side pressure drop	kPa	1,1	3,6	8,4	14,8
Sound power level Lw,a	dB(A)	30	35	41	45
Sound pressure level including 8 dB room attenuation	dB(A)	22	27	33	37
Active power P_el	W	12	14	19	26

Air-side data Cooling mode:

Temperature/relative humidity outdoor air: 32 °C/40 %
Temperature/relative humidity room air: 26 °C/50 %

Air-side data Heating mode:

Temperature/relative humidity outdoor air: -12 °C/90 %
Temperature/relative humidity room air: 21 °C/40 %

X-CUBE/ROOMAIR-V-ZAB/SEK-HE-4-KR/604x2200x260/C3

Under sill units for vertical installation on an external wall

Please note: The vertical decentralised ventilation unit variant described is equipped with an individual room control located in the unit for self-sufficient room operation. The supplied controllers contain the parameters of the standard control for operation according to our control description.

FSL-V-ZAB/SEK-HE with automatic secondary air changeover function - master unit

TROX FSL-V-ZAB/SEK-HE vertical decentralised ventilation unit with supply and extract air function and switchover option to secondary air operation (depending on air quality), WRG as well as heating and cooling function for installation on on-site facade construction:

Casing made of galvanised sheet steel, cover and sheet metal connections with deep-drawn threads and stainless steel cross-head screws, internal ducts sealed and lined as required, internal cable penetrations sealed, exposed surface powder-coated (RAL 9005, jet black)
For fastening the unit on site:
- On the top of the unit: L-bracket with slotted holes
- In the lower part of the unit: oblong holes below the heat exchanger
Opening on the room side in the upper area for the extract air and secondary air intake, without sealing tape, sealing to the sill panelling by means of closed-pored sealing tape to prevent air short-circuits (sealing tape not included in TROX scope of delivery) is required
Sound- and heat-insulating lining on suction and discharge side made of mineral wool faced with glass fibre scrim (material classification A, non-combustible according to DIN 4102, T1), erosion resistant up to air velocities of 20 m/s, or closed cell insulation material
The unit meets the hygiene requirements of VDI 6022
Levelling feet, +40 mm
Connection to the on-site fresh air and exhaust air openings of the façade by means of a circumferential, closed-pore sealing tape (40 mm wide, 10 mm thick) on the rear side of the unit. The intake and discharge resistance of the on-site construction should not exceed 20 Pa at nominal volume flow. The weather protection must be provided on the façade side and serves to protect the unit (weather protection not included in TROX scope of delivery)
Use of 2 energy-saving EC centrifugal blowers, supply and extract air fan classified in category SFP 0 (< 300 W/(m³/s)) according to DIN EN 16798-3:2017-11
Suitable for 4 speed levels (e.g. 60, 90, 120 and 150 m³/h), control via unit-internal individual room control, volume flow rate level correction by adjusting the control voltage subsequently possible
Meets the requirements of EU Regulation 1253/2014 (ErP Directive)
Low sound power level in supply/extract air mode and secondary air mode
Integrated recuperative, cross-counterflow heat recovery unit, heat recovery efficiency > 82 %, including condensate drip tray and discharge into the heat exchanger condensate drip tray. Accessibility for maintenance purposes via separate service cover possible without removing the unit cover
With electric motor bypass, which bypasses the air volume flow to the WRG, drive 24 V (continuous), 0 - 100 %, control via unit-internal single room control
Motorised shut-off dampers in fresh air and exhaust air areas, normally closed in inactive state via energy storage, 230 V drive, open-close, control via unit-internal individual room control system
Automatic switching to secondary air mode (only with an air quality sensor) if the room air quality (measured with the integral CO₂sensor, for example) is within the defined limits. The outdoor air damper closes, the self-powered secondary air damper opens and the extract air fan is switched off.
Integral electrical components are completely wired with FSL-CONTROL III, control components are integrated. Cable for connection (connection by others) to the power supply (L, N, PE), with wire end ferrules, approx. 1 m routed out of the casing:
- Supply voltage (230 V): 3 wires, 3 × 1.5 mm² (L, N, PE)
Connection option for bus communication (optional), connection of room control unit etc. after opening the customer area of the control. As a transfer point to the on-site trade measurement/control/regulation:
- Rail mount terminals type Wago 260 for the connection (by others) of
  - Digital inputs DI
  - Digital outputs DO
  - Master-slave connection RS485
  - Optional connection to building automation (GA) via RS485 (Modbus/BACnet)
  - Room control panel
  - RJ45 socket as service access to the user interface
  - Optional connection to GA via Ethernet (Modbus/BACnet)
The following sensors are arranged in the unit to control the individual room control (the actual room temperature is recorded on the room control unit or (optionally) transmitted via the GA):
- Indoor air quality sensor CO₂
- Supply air temperature measurement downstream of the heat exchanger
- Outdoor air temperature measurement in the outdoor air intake
2- or 4-pipe aluminium copper tube heat exchanger for air heating or air cooling, matched to project-specific data, easily removable for cleaning (depends on the connection to the main pipe - by others, not included in the TROX supply package), drainage and venting option per heating/cooling circuit, arrangement on the room side on the right. We recommend flexible hoses (not part of the supply package) to connect the unit to the existing pipe network (by others) as they simplify removal of the heat exchanger for cleaning
Transfer points are the manually pre-assembled control components
- Valves in the return: transfer with G ½" external thread, flat seal
- Lockshields in the flow: transfer with G ½" external thread, flat seal
Easy-to-clean condensate pan made of galvanised sheet steel, powder-coated RAL 9005, with condensate drain Ø 12 × 1 [mm]
Outdoor air filter as Mini Pleat filter, class ePM1 (fine dust filter):
- Filter class to ISO 16890: ISO ePM1 65%
- Eurovent-certified
- ePM1 filter media made of high-quality, wet-strength fibreglass paper are laid in tight pleats, the spacers are made of thermoplastic hot-melt adhesive and ensure that the pleats are evenly spaced (4 mm) from each other
- The frame is made from moisture-resistant non-woven fibre with brackets (for pulling it out) and must not reduce the flow cross-section (filter size = flow cross-section)
- Filter area ≥ 1.8 m²
Extract air filter (coarse dust filter) as flat filter medium, filter class according to ISO16890: ISO coarse 50 %
Easy inspection of the filters and the heat recovery unit due to the compact arrangement of the components behind the service cover. The service lid can be opened without tools via user-friendly quarter-turn fasteners. Accessibility must not be restricted by the on-site parapet cladding
Closed cell sealing tapes for sealing and adaptation to the outer casing provided by others (not included in the TROX supply package)
The sill cladding provided by the customer shall have perforations in areas of the heat exchanger to be specified for the introduction of supply air into the room and shall not restrict maintenance work or unit assembly/disassembly on the front side of the unit. An opening for extract air intake must also be arranged in the upper area of the cladding
The clear distance between the front edge of the unit and the inner edge of the parapet cladding should not be less than approx. 30 mm
The front of the device must be completely accessible after disassembly of the outer casing

RA-V-ZAB/SEK

–

604 × 2200 × 260

–

0.4

–

0.25

1 Type
FSL-V-ZAB/SEK Vertical under sill ventilation unit

2 Variant
HE High degree of heat recovery

3 Heat exchanger
2 2-pipe
4 4-pipe

4 Construction
KR with condensate drain, extract air opening on the right when seen from the room
KL with condensate drain, extract air opening on the left when seen from the room

5 Dimensions [mm]
Width × height × depth
604 × 2200 × 260

6 Control system
OR without control system
C3 with FSL-CONTROL III

7 Control function
MA Master
SL Slave

8 Real time clock
Only with control function MA
No entry: without real time clock
T with real time clock

9 Interface
No entry: without interface
MT with Modbus TCP
MR with Modbus RTU (only with control function MA)
BI with BACnet IP
BM with BACnet MS/TP (only with control function MA)

10 Air quality sensor
Only with control function MA
No entry: without air quality sensor
C with CO₂sensor
V with VOC sensor

11 Supply air temperature sensor
Z with supply air temperature sensor

12 Outdoor air temperature sensor
Only with control function MA
No entry: without outdoor air temperature sensor
A with outdoor air temperature sensor

13 Heating valve
HV with heating valve

14 Lockshield – heating circuit
R with lockshield

15 kVS value – heating valve
0.25 (straight-way valve)
0.40 (straight-way valve)
0.63 (straight-way valve)
1.00 (straight-way valve)
F0.50 (pressure-independent control valve)

16 Cooling valve
With heat exchanger '4' only
KV with cooling valve

17 Lockshield – cooling circuit
R with lockshield

18 kVS value – cooling valve
0.25 (straight-way valve)
0.40 (straight-way valve)
0.63 (straight-way valve)
1.00 (straight-way valve)
F0.50 (pressure-independent control valve)

Order example: FSL-V-ZAB/SEK-HE-4-KR/604×2200×260/C3/MA-T/MR/C/Z/A/HV-R-F0.40/KV-R-F0.25

Type	FSL-V-ZAB/SEK
Variant	High degree of heat recovery
Heat exchanger	4-pipe
Construction	Extract air opening right
Dimensions [mm]	Width 604, height 2200, depth 260
Control system	with FSL-CONTROL III
Control function	Master
Real time clock	with real time clock
Interface	with Modbus RTU
Air quality sensor	with CO₂-sensor
Supply air temperature sensor	with supply air temperature sensor
Outdoor air temperature sensor	with outdoor air temperature sensor
Heating valve	with heating valve
Lockshield – heating circuit	with lockshield
kVS value – heating valve	0.40 (straight-way valve)
Cooling valve	with cooling valve
Lockshield – cooling circuit	with lockshield
kVS value – cooling valve	0.25 (straight-way valve)

Variants, Dimensions, Product details

Downloads

product information

Product data sheet X-CUBE/ROOMAIR-V-ZAB/SEK-HE

FSL-V-ZAB-SEK-HE_PD_2023_07_20_DE_en 580 KB pdf

certificates

Energielabel RA-V-ZAB/SEK-HE

Label_1938605_V-ZABSEK-HE 110 KB pdf

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X-CUBE ROOMAIR-V-ZAB/SEK-HE

SUPPLY AND EXTRACT AIR UNIT WITH SWITCHOVER OPTION TO SECONDARY AIR MODE, INCLUDING HEAT RECOVERY (HRU) AND HEAT EXCHANGER FOR VERTICAL INSTALLATION IN FRONT OF THE SILL

Technical information

Function, Technical data, Quick sizing, Specification text, Order code

Variants, Dimensions, Product details

Downloads

product information

Product data sheet X-CUBE/ROOMAIR-V-ZAB/SEK-HE

certificates

Energielabel RA-V-ZAB/SEK-HE

TECHNICALLY NECESSARY

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