Systemair Topvex SoftCooler SR09, SR11 Installation Instructions

1 Declaration of Conformity

Manufacturer: Systemair Sverige AB, Industrivägen 3, SE-739 30 Skinnskatteberg, SWEDEN. Office: +46 222 440 00, Fax: +46 222 440 99, www.systemair.com

Confirms that the following products comply with applicable directives and regulations:

• Cooling unit
• Topvex SoftCooler SR09
• Topvex SoftCooler SR11

Applicable Directives and Regulations:

• Machinery Directive 2006/42/EC
• Low Voltage Directive 2014/35/EU
• EMC Directive 2014/30/EU
• Ecodesign Directive 2009/125/EC (327/2011 Requirements for fans, 1253/2014 Requirements for ventilation units)

Applied Harmonized Standards:

• EN ISO 12100:2010 (Safety of machinery - General principles for design - Risk assessment and risk reduction)
• EN 13857 (Safety of machinery – Safety distances to prevent hazard zones)
• EN 60204-1 (Safety of machinery – Electrical equipment of machines – Part 1: General requirements)
• EN 60335-1 (Household and similar electrical appliances – Safety Part 1: General requirements)
• EN 60335-2-40 (Safety of household and similar electrical appliances - Part 2-40: Particular requirements for electrical heat pumps, air-conditioners and dehumidifiers)
• EN 50106:2007 (Safety of household and similar appliances – Particular rules for routine tests)
• EN 60529 (Degrees of protection provided by enclosures (IP Code))
• EN 62233 (Measurement methods for electromagnetic fields)
• EN 61000-6-2 (Electromagnetic compatibility (EMC) – Part 6-2: Generic standards – Immunity for industrial environments)
• EN 61000-6-3 (Electromagnetic compatibility (EMC) – Part 6-3: Generic standards – Emission standards for residential, commercial and light-industrial environments)

Complete technical documentation is available. Dated: Skinnskatteberg, 15-03-2016. Signed: Mats Sándor, Technical Director.

2 Warnings

The following admonitions are presented throughout the document:

[Danger]

• Ensure Mains supply is disconnected before any maintenance or electrical work.
• All electrical connections must be carried out by an authorized installer according to local rules and regulations.
• Refrigerant circuit operation and refrigerant handling must be performed by certified personnel.

[Warning]

• Door handles are for installation use only and must be removed before operation for safety.
• The unit is heavy; handle with care during transport and mounting to avoid pinching injuries. Use protective clothing.
• Beware of sharp edges during mounting and maintenance. Use a proper lifting device and protective clothing.
• Avoid skin contact with refrigerant; use protective equipment (goggles, gloves, clothing) and ensure good ventilation.
• Seek medical attention for freezing injury.
• Wash exposed skin thoroughly after refrigerant contact.
• For eye contact, flush with eyewash or lukewarm water for 20 minutes and consult a doctor.
• The unit's electrical connection must include an all-pole circuit breaker with a minimum 3 mm gap.

[Caution]

• If installed in a cold place, ensure all joints are covered with insulation and tape.
• Cover duct connections/duct ends during storage and installation.
• Do not connect tumble dryers to the ventilation system.

3 Refrigerant Control/Reporting

Topvex SoftCooler SR units contain more than 3kg of refrigerant per circuit. A control report must be established by a certified cooling technician before commissioning. Leakage control with record keeping is required annually. Reporting to the inspection authority is necessary if the total refrigerant amount on the property exceeds 10 kg. Regulations may vary by country; consult local government.

4 Product Information

4.1 General

This manual concerns the Systemair Topvex SoftCooler SR, including models SR09 and SR11. It is available in Right (R) or Left (L) configurations, indicating the supply air outlet side when viewed from the access side. The manual provides basic information and recommendations for design, installation, start-up, and operation to ensure proper function. Thoroughly reading and adhering to this manual and safety requirements is crucial for proper and safe operation.

4.2 Technical Data

4.2.1 Dimensions and Weights

Figure 1: Dimensions (mm) SR09, SR11 (Drawn as left hand unit)

Diagram description: A diagram showing the unit with dimensions labeled A through G. Arrows indicate supply and exhaust air flow.

4.2.2 Technical Data

4.3 Components

Figure 2: Basic components in left hand unit

Diagram description: A schematic showing the internal components of the unit.

4.4 Electrical Cabinet

Figure 3: Electrical cabinet

Diagram description: A diagram showing the internal layout of the electrical cabinet.

5 Transport and Storage

Store and transport the Topvex SoftCooler to protect it from physical damage. Cover the unit to prevent dust, rain, and snow ingress. The appliance is delivered as one piece on a pallet. Use a forklift for transport. Avoid transferring the unit once installed on the floor, as feet can be damaged by lateral loading.

[Warning] The unit is heavy. Handle with care during transport and mounting to avoid pinching injuries. Use protective clothing. Ensure the unit does not tip over.

6 Installation

6.1 Unpacking

Verify all ordered equipment is delivered before starting installation. Report any discrepancies to the supplier.

6.2 Where/How to Install

Topvex SoftCooler units are for indoor installation. Place the unit on a horizontal, flat, and completely levelled surface. Electronic components require temperatures between 0°C and +50°C for interference-free operation. Maximum operating temperatures are: Outside air +33°C, Extract air +28°C, Ambient temperature +28°C. Ensure easy access for regular maintenance and inspection doors. Leave sufficient space for opening doors and removing main components. General maintenance includes inspecting and cleaning the drip tray and flange coils. A floor drain is required for condensation water. Avoid placing the unit directly against a wall to prevent low-frequency noise vibrations; insulate the wall if necessary.

6.3 Installing the Unit

6.3.1 Installation

Figure 4: Installation, left hand unit

Diagram description: Shows the unit with connections for Supply, Exhaust, Outdoor, and Extract air. Includes positions for VAV pressure transmitters, dampers, and sensors.

6.3.2 Installation Procedure

1. Prepare the mounting surface: Ensure it is flat, level, and can support the unit's weight. Follow local rules and regulations.
2. Lift the unit into place. [Warning] Beware of sharp edges during mounting and maintenance. Use a proper lifting device and protective clothing.
3. Level the unit using the enclosed mounting feet.
4. Connect the unit electrically to the mains via the all-pole circuit breaker (safety switch) located inside the unit. Wiring is routed through the top casing to the electrical connection box. Refer to the wiring diagram and chapter 6.4.2.1 for details.

[Warning] The unit's electrical connection must be preceded by an all-pole circuit breaker with a minimum 3 mm gap.

[Danger] Ensure Mains supply is disconnected before maintenance or electrical work. All electrical connections must be by an authorized installer according to local rules and regulations.

6.4 Dividing the Topvex SR Air Handling Unit

Before installing the Topvex SoftCooler SR, the Topvex SR unit must be divided (Figure 5). To split the unit: Remove the heat exchanger, supply air fan, and extract air filter. Loosen cable connectors. The unit halves are joined by 4 M10 screws. Identify sections: C. Control section, D. Heat recovery section. Gables can be dismounted by removing 6 MRX M6 screws. Reassemble in reverse order.

Figure 5: Left hand version

Diagram description: Illustrates the unit split into sections labeled A, B, C, D, E.

Note: When reassembling, ensure correct cable connections as per cable markings.

6.4.1 Assembly the Topvex SoftCooler SR

Figure 6: Left hand unit (right hand units are mirrored)

Diagram description: Shows the steps for assembling the SoftCooler with the air handling unit parts.

Ensure sealing stripes and faces between unit halves are undamaged. Place the SoftCooler between the air handling unit parts and push them together. Join with 4 M10 screws. Remove the cover plate on top, the exhaust air filter, and the supply air fan to access the inner upper mounting screws. Remount these components after securing the screws.

6.4.1.1 Condensation and Heat Insulation

Outdoor air and discharge ducts must be well insulated against condensation, especially in cold rooms. Use insulating covering (minimum 100 mm mineral wool) with a plastic diffusion barrier. For extremely low outdoor temperatures, additional insulation is required, totaling at least 150 mm. [Caution] Ensure all joints are covered with insulation and tape in cold places. Cover duct connections/ends during storage and installation. Do not connect tumble dryers to the ventilation system.

6.4.1.2 Condensation Drain

[Warning] The unit must not be operated before the condensation drain and water seal are connected to the floor drain. The drain connects under the drip-tray in the bottom of the unit. Use the included plastic connection pipe, cut to the correct height 'H' based on the table below, which relates 'H' to maximum negative pressure.

Figure 7: Dimension and assembly

Diagram description: Shows the condensation drain connection with height 'H' and a table relating 'H' to maximum negative pressure.

An extra pipe is needed to connect the water seal outlet to the floor drain. Ensure this pipe has a minimum slope of 1:200 to the floor drain and is in a frost-free space.

Figure 8: Pipe to floor drain

Diagram description: Illustrates the pipe connection from the unit to the floor drain.

6.4.2 Electrical Connection

[Danger] Ensure Mains supply is disconnected before maintenance or electrical work. All electrical connections must be by an authorized installer according to local rules and regulations. Operation in the refrigerant cycle and handling refrigerants must be performed by certified personnel.

6.4.2.1 External/Internal Connections

Figure 9: Electrical connection, left hand unit

Diagram description: Shows cable fastener, control cable, and power supply connections.

Connections:

1. Wire the prepared control cable from the Topvex SoftCooler electrical connection box to the Topvex SR electrical cabinet (supply air part). Use the grommet to enter the cabinet and secure the cable with self-adhesive fasteners.
2. Connect wires to the terminal block in the electrical cabinet according to labeling and the wiring diagram.
3. Connect the cooler unit electrically to the mains (400V 3~, 50 Hz) via the all-pole circuit breaker (safety switch). The power cable connects directly to the SoftCooler electrical connection box. Dimension wire and fuses according to electrical data (Figure 4.2.2).
4. Make electrical connections for the Topvex SR air handling unit as per its installation instruction.

Mains supply is the only external connection for the Topvex SoftCooler.

The prepared operating cable in the Topvex SoftCooler should be routed to the electrical cabinet in the supply air part of the Topvex air handling unit and connected to terminal blocks matching the cable markings.

7 Function Description

Figure 10: Left hand unit

Diagram description: A schematic illustrating the functional components of the unit.

7.1 General

Control unit E28 (UC) senses the extract temperature sensor (ETS) to maintain the set extract temperature by sequentially controlling the compressor (CPR), heat exchanger (HE), and hot water/electrical heater (HWL/H, ELH). The supply air temperature sensor (SS) limits the supply air temperature.

7.2 Power Control

The compressor (CPR) is controlled steplessly by the frequency converter (FC) between set minimum and maximum frequencies.

7.3 Power Limitation

The programmable controller monitors the condensing pressure via the high pressure sensor (HPS). If the pressure exceeds the set limit, the compressor (CPR) speed is gradually reduced to prevent a high pressure alarm.

Note: This instruction covers functions for the Topvex SoftCooler SR. For a complete description, refer to "SR 09,11, TR 09-15 Installation instruction".

8 Commissioning Protocol

Company:

Responsible:

8.1 General

8.2 Installation Protocol

8.3 Preparing Control Unit E28

To ensure correct functions, configure the control unit E28 (or use PC software "Corrigo E-tool Ventilation"). Log in to E28 (using code 3333) or download the configuration file (.vtc) from the Systemair online catalogue.

8.4 Before Compressor Start

The compressor crankcase oil must be heated before the first start to prevent damage.

8.5 Control Cooling Operation

Note: Important! Restore the cooling operation to "Auto": Log in to control unit E28 (2222), Select menu Hand/Auto, Select Cooler type/coil, Set Cooler to Auto.