EXHAUSTO VEX1000 RS Quick Guide

1. Product Information

1.1 Symbols, Terms and Warnings

Prohibition Symbol: ? Failure to observe instructions marked with a prohibition symbol may result in serious or fatal injury.

Danger Symbol: ⚠️ Failure to observe instructions marked with a danger symbol may result in personal injury and/or damage to the unit.

Stop and Wait Symbol: ⏳ After switching off the AHU, please wait 4 minutes for the system to de-energise.

Use and Designation of the Manual: This instruction manual is for use with EXHAUSTO VEX1000-type Air Handling Units (AHU). The Quick Guide provides essential warnings and information for swift and ready operation, covering the most relevant installation steps. Instructions must be fully observed for personal safety and equipment protection. EXHAUSTO A/S is not liable for accidents caused by equipment not used according to the manual's recommendations.

For more detailed information on dimensions, data points, application, handling, and maintenance, consult the installation and assembly guide. For electrical aspects, consult the electrical guide and wiring diagrams.

Warnings:

• Prohibited: The VEX unit must not be used to transport solid particles or in areas with a risk of explosive gases.
• No Duct Connection: If one or more spigots are not connected to a duct, fit a protective net with a maximum mesh width of 20 mm (in accordance with EN294).

1.1.1 Opening the Air Handling Unit

? Do not open the service doors before the supply voltage has been disconnected at the supply disconnecting switch (main switch). The supply disconnecting switch is located on the control system panel on the AHU.

1.1.2 Installation Requirements and Recommendations

Comfort Ventilation: EXHAUSTO VEX AHUs are used for comfort ventilation tasks. Refer to the mechanical guide for the operating temperature range.

Supply Disconnecting Switch and Mini Circuit Breaker Protection: The supply disconnecting switch (-Q1) and automatic fuses are built into the unit for internal overload and short-circuit protection.

Additional Supply Disconnecting Switch: ⚠️ If the VEX1000 is equipped with an electric heating coil, it is supplied by a separate supply disconnecting switch (main switch). Both supply disconnecting switches must be switched off to de-energise the system when a heating coil is installed.

1.1.3 Data Plate

The VEX unit data plate displays:

• VEX unit type
• Production number
• Supply data
• Filter data
• Weight
• [QR code] for documentation access
• EXHAUSTO contact information

NB: Always have the production number ready when contacting EXHAUSTO A/S.

Latest Version of the Guidelines: Important: Always check for the latest version of the manual. Scan the [QR code]s on the side of the air handling unit to access attached documentation.

Section Data Plate

VEX unit section data plates are located at the bottom of each section and show:

• Production number
• Section information
• Section weight

1.1.4 Technical Data

[EX SELECT PRO logo] Technical data regarding the configuration of the VEX1000 unit, as well as coil connections, is given on the accompanying spec sheet from the EXselectPRO calculation program.

2. Handling

2.1 Location Requirements

2.1.1 Requirements for Underlying Surface

When fitting the unit directly to an existing surface, the surface must be:

• Level
• Horizontal (±3 mm per meter)
• Hard
• Vibration-resistant

2.2 Unpacking

Supplied Components:

• VEX1000 unit
• Accessories (as indicated in the EXselectPRO configuration)

Packaging:

The unit is delivered attached to a disposable pallet or placed on a wooden frame and wrapped in plastic.

NB: Once the plastic is removed, the unit must be protected against dirt and dust. Whenever possible, keep the unit closed during fitting.

Clean Unit Before Use:

Once the VEX1000 unit is fitted, it must be checked and thoroughly cleaned. All dust, debris, and metal shavings must be vacuumed up.

2.3 Transport

Transport Equipment

Transport the VEX unit in one of the following ways:

Method: Using a pallet truck or forklift truck

IMPORTANT: The forks on the lifting equipment must be long enough to prevent damage to the bottom of the unit.

[Drawing: Unit being lifted by a pallet truck]

Method: Installation on base frame - split

Use straps and lifting yokes to prevent damage to the unit.

[Drawing: Unit sections being positioned on a base frame, secured with straps]

3. Mechanical Assembly

3.1 Installing the Unit

The VEX1000 unit is installed in a horizontal position.

3.1.1 Installed Directly Onto the Floor

The requirements for the floor surface must be met (see "Requirements for Underlying Surface").

NB: After installation, ensure the VEX1000 unit is completely level. If not, fit the adjustable set screws supplied with the unit.

3.1.2 Installation of Unit with Multiple Sections

Some VEX1000 units are supplied with 2 or 3 sections. They are assembled using both external and internal joint brackets. Ensure sections are fully assembled before clamping.

• 1: Start with the internal brackets in the back and front, top and bottom.
• 2-3: The internal brackets are then clamped together in the middle of the sections, both at the top and the bottom.
• 4-5: Mount the external brackets supplied with the unit.
• 6: Tighten the external brackets.

[Image description: Sequence of 6 photos showing mechanical assembly steps: inserting brackets, clamping sections, mounting external brackets, tightening brackets.]

3.1.3 Connecting the Heating/Cooling Coils

The internal heating or cooling coil can be connected to the pipe system using boiler hoses to prevent vibrations from spreading to the pipe system, if needed.

Note:

• a) When there is no heating/cooling requirement, valve adjustment must be based on the required primary circuit water flow.

? Do not connect the heating or cooling coil like this!

⚠️ Connection without circulation pump risks frost damage!

3.1.4 General Warnings for a Unit with DX (Direct Expansion) Cooling

• Note that the coolant from the evaporator must be collected and disposed of in accordance with national regulations concerning coolant disposal.
• Note that if the door is opened in the cooling section, there is a risk of frostbite from touching cold components.
• If coolant has escaped into the room, personnel may only be present if wearing respiratory protection. Coolant is odourless but displaces oxygen, leading to suffocation.

3.1.5 Connecting DX Cooling

• Connection of the DX section must be performed by an authorized cooling company.
• The pipe layout must be carried out by an authorized cooling technician.
• The pipes must be laid manually.
• The permitted pressure, stated for the cooling coil, must be maintained (Max pressure is 42 bar).
• Avoid contact with coolant and use personal protective equipment in accordance with national regulations.

4. Electrical Installation

4.1 Scope of Installation

The work must be performed by an authorized electrician, in accordance with locally applicable regulations and legislation.

4.2 Dimensioning and Installation

4.2.1 Dimensioning and Installation

• The supply cable must be dimensioned and installed in accordance with applicable regulations and legislation.
• The earth terminal (PE) must always be connected.

4.2.2 Installation Prerequisites

The installer must, in accordance with local applicable laws and regulations, install one line fuse and a supply cable.

4.2.3 Line Fuse

The line fuse is used for:

• Short-circuit protection of the VEX1000 unit.
• Short-circuit protection of the supply cable.
• Overload protection of the supply cable.

4.2.4 Supply Cable

When dimensioning the supply cable, consider the installation site conditions, including temperature, cable layout, and voltage drop.

4.2.5 Electrical Connection/Data

The unit's power consumption is described in the configuration supplied from the ExSelectPro calculation program.

4.2.6 Hovedforsyning (Main Supply)

The supply cable to the supply disconnecting switch must be connected directly to the supply disconnecting switch (main switch), tagged -Q1, as shown in the illustration below.

[Diagram: Shows connection terminals labeled PE, 1 L1, 3 L2, 5 L3, (N)7 L4 on one side, and PE, 2 T1, 4 T2, 6 T3, (N)8 T4 on the other side, with a switch labeled -Q1 in the center.]

4.2.7 Supply Connections

VEX1000 - Control panel 230 VAC, 50 Hz with one (1) heater:

These connections apply to 230 VAC, TT and TN-S power grids. Wiring diagrams: 0440681/0440682.

[Diagram: Shows wiring for 230VAC single-phase supply.]

⚠️ In Denmark and Germany, a three-phase installation is legally required due to local legislation stipulating a maximum current consumption of 16 A for single-phase installations.

VEX1000 - Control panel 3x230 VAC, 50 Hz:

These connections apply to 3x230 VAC, TT and TN-S power grids. Wiring diagrams: 0440683.

[Diagram: Shows wiring for 3x230VAC three-phase supply.]

VEX1000 - Control panel 3x400 VAC + N, 50 Hz:

These connections apply to 3x400 VAC, TT and TN-S power grids. Wiring diagrams: 0440684.

[Diagram: Shows wiring for 3x400VAC three-phase supply with neutral.]

4.2.8 Krav og anbefalinger til installationen (Requirements and Recommendations for Installation)

Supply Disconnecting Switch and Mini Circuit Breaker Protection: The supply disconnecting switch (-Q1) and automatic fuses are built into the unit for internal overload and short-circuit protection.

Additional Supply Disconnecting Switch: ⚠️ If the VEX1000 is equipped with an electric heating coil, it is supplied by a separate supply disconnecting switch (main switch). Both supply disconnecting switches must be switched off to de-energise the system when a heating coil is installed.

Residual Current Device (RCD)

VEX1000: The unit must have protection against indirect contact.

If RCD protection is fitted, it must meet the following requirements:

• PFI type B switch that breaks the circuit on registering a fault current with DC content (pulsating DC) or stray residual current in accordance with EN 61008.
• The fault current switches must be marked with the following symbol: [Symbol for RCD Type B].
• Disconnection time must be max. 0.3 s.

Current Leakage: RCD protection of 300 mA is recommended, as leakage currents of more than 30 mA can occur.

4.2.9 Short-circuit Current

[EX SELECT PRO logo] The minimum and maximum short-circuit current (IKmin and IKmax) is stated in the supplied electrical documentation from EXselect Pro, on the data plate, and for the electrical heating coil, if included.