VENTBOX 150 Thin

Apartments up to 100 m²

The VENTBOX 150 Thin central air recovery system is a revolutionary, user-friendly solution for optimising air quality in your home. This modern unit has been designed taking into account the latest technologies and technical developments to offer optimum comfort and performance for residential homes and small family houses. The unit's features include air purification from allergens and pollens, it has efficient extraction of stale air and water vapour, it has low energy consumption and reduces excess CO₂ and can be controlled via a web interface. With the VENTBOX 150 unit, you can be sure that your home will always have fresh, healthy air.

Version Optimum

This is an innovative and powerful heat recovery unit designed to optimally achieve maximum performance while ensuring economic efficiency. The unit is equipped with all the necessary technical equipment to ensure efficient operation and optimization of all performance parameters.

Version Premium

The unit is additionally equipped with unrivalled motors with constant flow function. These unique fans compensate for pressure losses (e.g. in case of flow blockage at the inlet). With these premium EC motors, the unit can operate more efficiently and economically; this has a positive effect on the overall dynamics and also the economy when using the heat recovery system. Compensation for changes in pressure losses in the system, e.g. when the filters gradually become clogged. Ensuring uniform ventilation and high efficiency of heat recovery. The unit is more sophisticated.

Technické údaje Poptávka

Efektivní odvod odpadního vzduchu
Na strop, stěnu nebo podlahu
Nízká spotřeba

Recommended area	up to 100 m²
Energy class	A
Installation option	Floor mounting, under the ceiling, wall mounting / left or right variant
Dimensions (h × w × d)	192 × 593 × 1 248 mm
Weight [kg]	20 kg
Voltage	230 V AC/50 Hz
Electric current without preheating [A]	0,3 A
Electric current including preheating [A]	3,7 A
Max. input power of the unit without preheating [W]	51 W
Max. preheating input power [W]	1 024 W
Total power input
IP coverage	30
Air flow [m³/h]	30–150 m³/h
Maximum airflow in BOOST setting [m³/h]	200 m³/h
Reference air flow [m³/h]	105 m³/h
Displacement pressure [Pa]	50–350 Pa
Acoustic energy L_WA [m³/h/Pa/dB]	105 m³/h/50 Pa/46,9 dB
Heat transfer efficiency / Flow rate	78 %/150 m³/h; 83 %/105 m³/h; 88 %/50 m³/h
Electrical input (without preheating)	55 W/150 m³/h; 29 W/105 m³/h; 17 W/50 m³/h
∅ of the connection necks [mm]	125 mm
Type of pipe for condensate drainage	HT DN 32 mm
Specific power consumption SPI* W/m³/h	0,29 W/at reference airflow 105 m³/h and disposition pressure of 50 Pa
Max. number of all sensors (CO₂ / RH / RADON …)	9
Connector for fire sensor or EPS connection	Yes
Automatic frost protection	Yes
Bypass function (exchanger bypass)	Yes
Shock ventilation	Yes
Weekly time mode	Yes
Measuring energy consumption	Yes
Modbus TCP/IP communication	Yes
Modbus RTU communication	Yes
Analogue input	2
Digital input	1
Filter clogging indicator based on time interval	Yes
Filter clogging indicator based on filter pressure drop	Premium version
Filters supply/exhaust (% of particles captured in a given filter class) Optimum version	M5 ePM10 55 % (F7 optional)
Filters supply//exhaust (% of particles captured in a given filter class) Premium version	F7 ePM1 70 %
By default, the unit is supplied with a counterflow heat exchanger (HRV)

Enthalpy counterflow heat exchanger ERV

The enthalpy counterflow heat exchanger is an optional part of the heat recovery system which, in addition to heat recovery, also allows moisture recovery, thus supporting the maintenance of optimal indoor air humidity and thus improving the user comfort of apartments and residential buildings. These systems bring many benefits, including energy efficiency, reduced heating costs, and improved indoor air quality.

Working principle of the counterflow exchanger

Main features and benefits

• Heat exchange – an enthalpy heat exchanger ERV allows heat energy to be transferred from warmer exhaust air to cooler outdoor air, thereby increasing the temperature of the air entering the building in winter. This helps to reduce heating costs because the fresh air is heated passively during the exchange.

• Moisture exchange – in addition to heat, the enthalpy heat exchanger allows moisture transfer. This is important for maintaining optimum humidity indoors. The moisture in the exhaust air is transferred
to the supply air, which can be useful in areas with extreme climatic conditions.

• Reduction of losses and pollution – the enthalpy heat exchanger also serves to separate the supply and extract air, preventing the transfer of pollution, dirt and unwanted odours from the outside into
the building. This improves the indoor air quality

• Energy savings – operation without the need to preheat the incoming air down to -5 °C.

The enthalpy heat exchanger can be ordered separately or later; after a very simple installation, the entire unit is upgraded with advanced technology. Ordering code: P-019

Specifications with enthalpy exchanger VENTBOX 150 Thin Optimum and Premium version
Weight of the entire unit	21,5 kg
Energy class	A
Heat transfer efficiency / Flow rate	70 %/150 m³/h 74 %/105 m³/h 82 %/50 m³/h
Moisture transfer efficiency / Flow rate	48 %/150 m³/h 53 %/105 m³/h 63 %/50 m³/h

Order Code for the Enthalpy Exchanger for the VENTBOX 150 Thin: P-019

VENTBOX COMPONENTS, FILTERS, CONTROL, BY-PASS

VENTBOX components

Basic specifications

1 VENTBOX 150 Thin ventilation unit with white galvanised sheet metal on one side (casing not removable)
2 casing of the device
3 air duct connection necks ∅ 125 mm
4 connection caps
5 outlet for condensate discharge
6 unit body
7 bypass damper including actuator
8 plate counterflow heat exchanger (HRV/ERV)
9 fixing rail
10 fans with efficient EC motor
11 control electronics and power supply of the unit (2× analog inputs, 1× digital input, connector for connecting fire sensor or electrical fire alarm system (EPS), temperature sensors)
12 control and information panel
13 Wi-fi
14 control electronics cover
15 air filters
16 filter closing caps
17 fan cover
18 heat exchanger cover
19 preheating cover
20 preheating
21 wedge for directing the airflow (when using side outlets)
22 Verankerung / Befestigung von Blechscharnieren einschließlich Verbindungselemente

230 V mains power cable
anchoring/fixing sheet metal hinges with included fasteners

Basic software functions

• automatic frost protection
• bypass function (exchanger bypass)
• control via a web interface
• weekly time mode
• Modbus RTU communication
• measuring energy consumption
• BOOST shock ventilation

Optional specification

• enthalpy counterflow heat exchanger
• continuous variable manual control
• CO₂ sensors
• relative humidity (RH) sensor
• radon concentration sensors
• TVOC and HCHO (volatile substances and formaldehyde) sensor
• filter clogging indicator based on filter pressure drop
• filter clogging indicator based on time interval
• INPUT filters (Optimum) F7 (ePM1 70 %)* – pollen
• EXHAUST filters (Optimum) F7 (ePM1 70 %)* – pollen
• insulation box (place the unit in a place with lower temperature)
_{* the figure in (%) tells how many particles in a given filter class the filter “captures”}

FILTERS

• Filtration class M5 – inlet (Optimum version only) – 204 × 127 × 29 mm, ePM10 50 %

• Filtration class M5 – exhaust (Optimum version only) – 204 × 127 × 29 mm, ePM10 50 %

• Filtration class F7 inlet – 204 × 127 × 29 mm, ePM1 70 %

• Filtration class F7 exhaust – 204 × 127 × 29 mm, ePM1 70 %

CONTROL

Unit control via web interface

The home screen is used to view information, control and set up the VENTBOX 150 Thin. The middle part displays the current power of the
unit; information and status icons are below, then the current values are measured by the room sensors used by the unit (provided that the sensors are connected to the heat recovery unit). The lower part contains buttons for operating and setting the heat recovery unit.

Control and information panel

The VENTBOX 150 Thin can normally be operated via the web interface, but all basic service operations can also be performed manually
(by pressing the appropriate button) on the control panel located on the front of the device:

R a short press of the button to perform a reboot, which preserves all user and service settings of the device.

D a longer press of the button (5 s) to enter the factory settings, where the ventilation unit runs permanently at reduced power.
At the same time, all user settings will be lost, including weekly program settings and network connections if previously made. The settings for the type of exchanger (ERV/HRV) and fan corrections remain unchanged. The ventilation unit goes back to AP mode including the login password set by the manufacturer.
F press the button (2 s) to set the new filter change interval. Use this only for filter changes!

Information LED
• green – power – flashing – connected to power (Standby mode), lit – device in operation
• blue – filters – lit or flashing request for filter change
• red – error – must check “Error messages”

By-pass mode

Bypass mode is one of the key components of VENTBOX central heat recovery units. This mode is enabled by a bypass flap equipped with a servo drive. In case of manual or automatic activation and based on defined temperatures in the web interface, the bypass flap allows bypassing the heat exchanger. The air extracted from the interior is deflected by the bypass flap, so that it does not pass through the heat exchanger, after which it is directly discharged outside the building and does not transfer thermal energy to the outdoor air brought into the unit.

Bypass mode is commonly used during summer operation, especially at night when the outdoor air is naturally cooler. This allows the temperature of the interior spaces to be effectively reduced without the need for active cooling. The bypass thus provides an effective way to ensure optimal thermal comfort in the interior during the warm summer months.

By-pass mode description

1. The principle of the by-pass modeI
– In active mode, warm air from the interior is directly discharged outside without heat exchange. The heat exchanger is deactivated in this mode with the help of a bypass flap, which prevents unwanted heating of the fresh air being supplied. Fresh cool air is blown into the interior.

2. Activation conditions

– Bypass is activated automatically if the temperature in the interior rises above the desired value set in the web interface. Once the desired temperature in the interior is reached, the bypass mode is deactivated and the unit switches back to the standard recovery mode. The web interface can also define the lowest possible temperature of the air supplied to the interior.

3. Protection and filtration

– For the correct function and protection of the system, the bypass flap is supplemented with a bypass filter. This protects the heat exchanger and motor from dust with impurities that may be contained in the air diverted from the interior when there is no air flow through the standard exhaust filter. The bypass filter is necessary to ensure long-term reliability and efficiency of the recovery unit.

Advantages of the bypass flap

• Energy savings – reduces the need for active interior cooling in the summer.
• Increased comfort – allows the use of naturally cooler outdoor air to improve the indoor climate.

User functions that you can control

• ventilation shutdown – Standby mode (unit is not disconnected from a power supply)
• switching between automatic and manual mode (A/M)
• one-time reduction of ventilation power when leaving the building (holiday)
• short-term increase of ventilation intensity (BOOST mode)
• manual bypass flap switching (summer only)
• user device settings

REQUIREMENTS FOR OTHER PROFESSIONS

Electrical requirements Mandatory preparation Fixed power cables 3×2.5 with circuit breaker 16 A char. B from the switchboard to the heat recovery unit • Terminate with an AC 230 V/50 Hz socket no further than 1 m from the power socket of the heat recovery unit (the power socket of the heat recovery unit is located between the necks facing the interior). • Marking of the circuit breaker with the label “heat recovery”. • Do not block – bulk remote control! Optional preparation UTP cable from the home Wi-fi router to the heat recovery unit • Terminate with RJ 45 socket at the location of the heat recovery unit. This is used only in case of a weak Wi-fi signal, for possible connection of a Wi-fi router, and for Wi-fi signal amplification (it is not used for physical connection of the heat recovery unit). Intensive exhaust buttons “WC, Bathroom, Kitchen” • Bring UTP cable or J-Y(ST)Y 2×2×0.8 to all rooms with exhaust requirement (WC, bathroom, kitchen and other optional rooms). • Connect all wires from the intensive exhaust buttons in parallel and connect them to the recovery unit. • Terminate with a free cable with a reserve of min. 2 m, not farther than 0.5 m from the data terminal of the heat recovery unit and mark “WC button, Bathroom, Kitchen”, etc. • In the rooms, install a push button with a return to the original position. CO₂ and HYG sensors and continuous control panel (P.R.T.) • Bring UTP cable or J-Y(ST)Y 2×2×0.8 for sensors and P.R.T. to the required rooms, the wires must be connected in series according to the requirements of the technical design of the RS 485 bus – sensors communicate using Modbus RTU! • Terminate the cable with a margin of min. 2 m, at the furthest 0.5 m from the data terminal of the heat recovery unit (data terminals are always located between the necks facing the interior). Recommendations • The CO₂ sensor for bedrooms or living rooms should be placed at the height of the switches. • Humidity sensors for bathrooms should be placed on the wall 10 cm below the ceiling. • Always leave a margin of at least 0.3 m on the continuous cables that connect the individual sensors in series.
ELECTRICAL CONNECTION
The electrical power connection of the VENTBOX 150 Thin is by means of a 1.5 metre power cable. All connector connections are located on the Control Panel, which is located between the interior necks. This is also the location of the unit’s main switch. 1 The unit’s main power switch with a socket for 230 V mains cable connection and FST 5× 20 10 A/250 V fuse 2 Modbus – connection of RH, CO₂, TVOC, Radon sensors, P.R.T. 3 P.R.T. – analogue input for connection of external controller 4 AI2 – analogue input 5 DI1 – digital input for intensive exhaust buttons (bathroom, kitchen, WC) 6 Antenna used for wireless communication (connection to Wi-fi network).

Requirements for water installation Mandatory preparation HT waste pipe – DN 32 mm • Fit with a dry siphon and terminate it near the outlet of the condensate drain from the recovery unit (the condensate drain is always located between the outlet of the recovery unit that faces the exterior). • Keep in mind the required “inspection opening” and the possibility of disconnecting the recovery unit from the waste. • It is necessary to ensure that the outlet has free flow, considering the overall gradient of the waste system (min. 3 %). Vertical wall mounting • Terminate the drain at least 20 cm below the bottom edge of the recovery unit. Horizontal mounting on the ceiling or floor • Terminate the drain at least 5 cm from the bottom edge of the recovery unit.	Requirements for construction Mandatory preparation Air ducts ∅ 125 mm • Supply air ducts according to the selected configuration of the rec. unit (right / left variant) and the location of air inlets (front / side outlet). Keep in mind the overall location of the heat recovery unit in the building (wall / drop ceiling / floor mounting). Revision opening (min. 1 580 × 880 mm) • Ensure sufficient space for installation and servicing with regard to the location of the heat recovery unit. • The minimum required installation depth of the heat recovery unit is 220 mm! Anchor holes • With regard to the chosen mounting variant and it’s weight. Horizontal mounting Installation under the ceiling (e.g. drop ceiling) – always the left variant of the heat recovery unit! Floor mounting (e.g. attic) – always the right variant of the heat recovery unit! Vertical mounting Wall mounting – mounting of both right and left variants of the heat recovery unit

ASSEMBLY

Floor mounting
		1 socket 230 V AC/50 Hz, or RJ 45 2 placement of wall mounting anchors – anchor holes 4× ∅ 10.5 mm, mounting spacing 1 215 × 642 mm 3 optional side connections 4 inspection opening 1 580 × 880 mm 5 dry trap (recommended HL 138 DN 32) Caution! Possible only with the right variant of the unit.
Installation under the ceiling
		1 socket 230 V AC/50 Hz, or RJ 45 2 placement of wall mounting anchors – anchor holes 4× ∅ 10.5 mm, mounting spacing 1 215 × 642 mm 3 optional side connections 4 inspection opening 1 580 × 880 mm 5 dry trap (recommended HL 138 DN 32) Caution! Possible only with the left variant of the unit. Always place the unit on a level surface, and ensure it is correct orientation and overall gradient!

Wall mounting – left variant	Wall mounting – right variant	1 socket 230 V AC / 50 Hz, or RJ 4 2 placement of wall mounting anchors – anchor holes 4× ∅ 10.5 mm, mounting spacing 1 298 × 536 mm 3 optional side connections 4 min. inspection opening 1 580 × 880 mm 5 dry trap (recommended HL 138 DN 32) _{Dimensions in mm. Technical changes reserved.}

Galerie

ORDERING CODES

Example of ordering code: VB1-0150-TC-OHR
VENTBOX 150 Thin first generation with central heat exchanger, standard EC fans version Optimum, standard heat exchanger with right-hand side connection.

VENTBOX	Generation		Volume flow		Design	Heat recovery unit type		Model / Type	Exchanger type	Connection option
V B	1	-	0150	-	T	C	-	O	H	R
					Thin	C - centralized		O - Optimum P- Premium	H - standard E - enthalpy	R - right L - left

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