Systemair Topvex SC03-11 Compact Air Handling Unit
Installation Instructions
1 Declaration of Conformity
Manufacturer: Systemair AB
Industrivägen 3
SE-739 30 Skinnskatteberg SWEDEN
Office: +46 222 440 00 Fax: +46 222 440 99
www.systemair.com
Systemair AB hereby confirms that the following products:
Air handling units
- Topvex SC03 EL
- Topvex SC03
- Topvex SC03 HW
- Topvex SC04 EL
- Topvex SC04
- Topvex SC04 HW
- Topvex SC06 EL
- Topvex SC06
- Topvex SC06 HW
- Topvex SC08 EL
- Topvex SC08
- Topvex SC08 HW
- Topvex SC11 EL
- Topvex SC11
- Topvex SC11 HW
(The declaration applies only to product in the condition it was delivered in and installed in the facility in accordance with the included installation instructions. The insurance does not cover components that are added or actions carried out subsequently on the product)
Comply with all applicable requirements in the following directives:
- Machinery Directive 2006/42/EC
- Low Voltage Directive 2006/95/EC
- EMC Directive 2004/108/EC
The following harmonized standards are applied in applicable parts:
| Standard | Description |
|---|---|
| EN ISO 12100-1 | Safety of machinery - Basic concepts, general principles for design - Part 1: Basic terminology, methodology |
| EN ISO 12100-2 | Safety of machinery – Basic concepts, general principles for design - Part 2: Technical principles |
| EN ISO 14121-1:2007 | Safety of machinery – Risk assessment - Part 1: Principles |
| EN 13857 | Safety of machinery - Safety distances to prevent hazard zones being reached by upper or lower limbs |
| EN 60 335-1 | Household and similar electrical appliances - Safety Part 1: General requirements |
| EN 60 335-2-40 | Safety of household and similar electrical appliances - Part 2-40: Particular requirements for electrical heat pumps, air-conditioners and dehumidifiers |
| EN 50 106 | Safety of household and similar appliances – Particular rules for routine tests referring to appliances under the scope of EN 60335-1 and EN 60967 |
| EN 60 529 | Degrees of protection provided by enclosures (IP Code) |
| 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 |
The complete technical documentation is available.
Skinnskatteberg, 02-01-2012
Mats Sándor
Technical Director
2 Warnings
The following admonitions will be presented in the different sections of the document.
Danger
- Make sure that the Mains supply to the unit is disconnected before performing any maintenance or electrical work!
- All electrical connections must be carried out by an authorized installer and in accordance with local rules and regulations.
Warning
- The unit must be duct connected or in some other way provided with protection so that it is not possible to come in contact with the fans through the duct connections
- The unit is heavy. Be careful during transport and mounting. Risk of injury through pinching. Use protective clothing.
- Beware of sharp edges during mounting and maintenance. Make sure that a proper lifting device is used. Use protective clothing.
- The units electrical connection to the mains supply must be preceded by an all pole circuit breaker with a minimum 3 mm gap.
Caution
- If the unit is installed in a cold place make sure that all joints are covered with insulation, and tape well
- Duct connections/duct ends should be covered during storage and installation
- Do not connect tumble dryers to the ventilation system
- Take care not to damage the water battery when connecting water pipes to connectors. Use a spanner to tighten the connection.
3 Product information
3.1 General
This installation manual concerns air handling unit type Topvex SC03-11 manufactured by Systemair AB. Topvex SC03-11 include the following model options:
- Model: SC03, SC04, SC06, SC08, SC11.
- Heating coil: EL (Electric), HW (Water coil) or None.
- Right or left models: R (Right) L (Left). The side where the supply air is located when viewed from the access side.
- Airflow control: CAV (Constant Air Volume), VAV (Variable Air Volume = Constant duct pressure control)
Water heating battery can be ordered as an accessory to units without re-heater.
This manual consists of basic information and recommendations concerning the design, installation, start-up and operation, to ensure a proper fail-free operation of the unit.
The key to proper and safe operating of the unit is to read this manual thoroughly, use the unit according to given guidelines and follow all safety requirements.
3.2 Technical data
3.2.1 Dimensions and weights Topvex SC03-SC04
Figure 1 illustrates the dimensions (in mm) for the SC03-SC04 models, presented as a left-hand unit, detailing measurements labeled A through P.
| Model | A | B | C | D | E | F | G | H | P |
|---|---|---|---|---|---|---|---|---|---|
| SC03 | 1597 | 1531 | 730 | 790 | 371 | 365 | 231 | 118 | 792 |
| SC04 | 1941 | 1531 | 730 | 790 | 371 | 365 | 181 | 118 | 965 |
| Model | I | J | K | L | M | N | O | Weight, kg | |
|---|---|---|---|---|---|---|---|---|---|
| SC03 | 280 | 59 | 1463 | 597 | 45 | 1 | 100 | 315 | 280 |
| SC04 | 380 | 80 | 1814 | 597 | 45 | 100 | 400 | 330 |
* male
3.2.2 Dimensions and weight Topvex SC06
Figure 2 illustrates the dimensions (in mm) for the SC06 model, presented as a left-hand unit, detailing measurements labeled A through U.
| Model | A | B | C | D | E | F | G | H | I | J | K | L |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SC06 | 2175 | 1622 | 895 | 619 | 937 | 600 | 300 | 234 | 280 | 147 | 78 | 244 |
| Model | M | M | O | P | Q | R | S | T | U | Weight, kg |
|---|---|---|---|---|---|---|---|---|---|---|
| SC06 | 280 | 100 | 52 | 45 | 761 | 523 | 876 | 562 | 900 | 470 |
* male
3.2.3 Dimensions and weight Topvex SC08-SC11
Figure 3 illustrates the dimensions (in mm) for the SC08-SC11 models, presented as a left-hand unit, detailing measurements labeled A through V.
| Model | A | B | C | D | E | F | G | H | I | J | K | L |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SC08 | 2650 | 1771 | 895 | 751 | 1139 | 600 | 400 | 195 | 583 | 147 | 78 | 215 |
| SC11 | 3211 | 1771 | 895 | 829 | 1552 | 600 | 500 | 195 | 384 | 147 | 78 | 234 |
| Model | M | M | O | P | Q | R | S | T | U | V | Weight, kg |
|---|---|---|---|---|---|---|---|---|---|---|---|
| SC08 | 360 | 100 | 52 | 45 | 761 | 653 | 1076 | 770 | 790 | 360 | 565 |
| SC11 | 420 | 100 | 52 | 45 | 761 | 733 | 1492 | 770 | 790 | 770 | 683 |
* male
3.2.4 Electrical data
Table 1: Power Consumption
| Model | Fans (W tot.) 400 V 3N~ | El Heating battery (kW tot.) | Fuse (mains) (A) for 230V 1~ and 400 V 3N~ |
|---|---|---|---|
| SC03 EL | 1012 | 5 | 3x16 |
| SC03 (None, HW) | 1012 | - | 10 |
| SC04 EL | 1526 | 7.5 | 3x20 |
| SC04 (None, HW) | 1526 | - | 10 |
| SC06 EL | 2032 | 12 | 3x25 |
| SC06 (None, HW) | 2032 | - | 3x10 |
| SC08 EL | 3788 | 15 | 3x32 |
| SC08 (None, HW) | 3788 | - | 3x10 |
| SC11 EL | 6264 | 22.5 | 3x50 |
| SC11 (None, HW) | 6264 | - | 3x13 |
3.3 Transport and storage
The Topvex SC03-11 should be stored and transported in a way that protects it against physical damage. It should be covered to prevent dust, rain, and snow from entering and damaging the unit and its components. The appliance is delivered with all necessary components, wrapped in plastic on a pallet for easy transportation.
When transporting Topvex SC03-11 units, use a forklift placed on the gable of the unit. For SC06-SC11 sizes, the units are delivered in parts on the pallet.
Warning
- The unit is heavy. Be careful during transport and mounting. Risk of injury through pinching. Use protective clothing.
- Be careful so the unit doesn't tip over.
4 Installation
4.1 Unpacking
Verify that all ordered equipment is delivered before starting the installation. Any discrepancies must be reported to the supplier of Systemair products.
4.2 Where/how to install
Topvex SC03-11 units are meant for indoor installation. They can be installed outdoors if weather-protected. Place the unit on a horizontal flat surface and ensure it is completely leveled before operation.
Preferably, place the unit in a separate room (e.g., storage, laundry room, attic). Electronic components should not be exposed to temperatures below 0°C or above +50°C.
If installed in a cold place, it's important not to shut off the unit via the main switch. Keeping the main voltage on will keep the electrical cabinet warm, even in cold climates, although the unit itself might be turned off by the control system.
Consider that the unit requires regular maintenance and that inspection doors should be easily accessible. Ensure sufficient free space for opening doors and removing main components.
Avoid placing the appliance against a wall, as low-frequency noise can cause vibrations. If unavoidable, insulate the wall carefully.
The outdoor air intake should ideally be on the northern or eastern side of the building, away from other exhaust outlets (e.g., kitchen or laundry room vents).
For SC06-SC11 sizes, units are delivered in parts on a pallet. Refer to Figure 4 for the mounting procedure. Attach fast couplings to electric wires, connect tubes for the pressure guard filter, push units together, and fasten with the assembly fitting (pos. 1) using a hex key. Ensure enough space behind the unit for tightening bolts.
Figure 4 shows the assembly procedure for SC06-SC11 units.
4.3 Condensation drain
The unit must be connected to the condensation drain provided. The drainage connects to the exhaust air side of the heat exchanger at the bottom of the unit (Figure 5). For cool recovery, the normally plugged drainage outlet must also be connected to a separate tube and water lock (accessories).
Use the enclosed connection tube, cut to the appropriate height. Table 2 shows the correspondence between height "H" and maximum negative pressure. Figure 6 provides dimensions and assembly details.
An extra middle piece/tube is needed to lead water out from beneath the unit to the water lock; its length "L" depends on the installation method and is not factory-included.
Note: When installed in an unheated place, insulate the drain pipe and trap to prevent freezing.
Figure 5 shows the drainage connection.
Figure 6 shows dimension and assembly for the drainage connection.
| H (mm) | Max. Negative pressure (Pa) |
|---|---|
| 65 | 300 |
| 95 | 600 |
| 135 | 1000 |
1. Normal conditions
4.4 Installing the Unit
The unit must be installed in the following positions:
Figure 7 illustrates the installation position for a left-hand unit, showing airflow directions.
Figure 8 illustrates the installation position for a right-hand unit, showing airflow directions.
Table 3: Symbol description
| Symbol | Description |
|---|---|
| → | Supply air |
| ←→ | Exhaust air |
| ← | Outdoor air |
| →← | Extract air |
4.4.1 Installation procedure
- Prepare the mounting surface: Ensure it is flat, leveled, and can support the unit's weight. Perform installation according to local rules and regulations.
- Lift the unit into place.
Warning: Beware of sharp edges during mounting and maintenance. Use a proper lifting device and wear protective clothing.
- Level the unit using the enclosed mounting feet.
Diagram shows a mounting foot with adjustment mechanism.
- Connect the unit electrically to the mains via the all-pole circuit breaker (safety switch) located inside the unit. Wiring is led through the top of the unit. Refer to the enclosed wiring diagram and tables for more information.
Warning: The unit's electrical connection to the mains supply must be preceded by an all-pole circuit breaker with a minimum 3 mm gap.
Danger:
- Make sure the Mains supply to the unit is disconnected before performing any maintenance or electrical work!
- All electrical connections must be carried out by an authorized installer and in accordance with local rules and regulations.
4.5 Supply air sensor
The supply air sensor is fitted in the supply air duct approximately 3 meters after the unit (Figure 9). Refer to Table 4 for terminal connections in the electrical connection box. Other temperature sensors are factory-built into the unit. The supply air sensor is included in the unit package.
Figure 9 shows the installed supply air sensor (right-hand connected unit).
4.6 Installation of VAV models
If the unit is delivered as a VAV (Variable Air Volume) unit, the pressure transmitters controlling fan speeds are supplied loosely. These need to be mounted in the supply and extract air ducts (Figure 10) and connected to terminals 40–42 (Table 4).
Figure 10 shows VAV installation.
4.7 Connections
4.7.1 Ducting
4.7.1.1 Air connections principles
Figure 11 shows the connections and basic components for left-hand connected units. It illustrates airflow directions and component positions.
| Position | Description | Symbol |
|---|---|---|
| A | Connection supply air | → |
| B | Connection exhaust air | ←→ |
| C | Connection outdoor air | ← |
| D | Connection extract air | →← |
| 1 | Fan supply air | |
| 2 | Fan extract air | |
| 3 | Filter supply air | |
| 4 | Filter extract air | |
| 5 | Heat exchanger | |
| 6 | Electric compartment | |
| 7 | Damper bypass extract air | |
| 8 | Damper bypass outdoor air | |
| 9 | Pressure transmitter Fans | |
| 10 | Pressure guard filters |
4.7.1.2 Condensation and Heat Insulation
Outdoor air ducts and discharge ducts must be well insulated against condensation. Proper insulation installation on ducts connected to the unit is crucial. All ducts in cold rooms/areas require good insulation. Use insulating covering (minimum 100 mm mineral wool) with a plastic diffusion barrier. In areas with extremely low outdoor temperatures, additional insulation is needed, totaling at least 150 mm insulation thickness.
Caution:
- If the unit is installed in a cold place, ensure all joints are covered with insulation and taped well.
- Duct connections/duct ends should be covered during storage and installation.
- Do not connect tumble dryers to the ventilation system.
4.7.1.3 Silencers
To prevent fan noise transfer via the duct system, silencers should be installed on both supply and extract air. For noise transfer between rooms and from the duct system itself, installing silencers before each inlet diffuser is recommended.
4.7.2 Mounting the Water heating battery
Note: Applies to units without re-heater!
A water heating battery can be acquired as an accessory for units without a re-heater (None). The following procedure describes how to mount and connect it.
4.7.2.1 HW installation in Topvex SC03-11 without re-heater
- Open the inspection door to the heating section. The motor must be removed before inserting the water heating battery (refer to "Operating and Maintenance instructions").
- Insert the water heating battery into the metal guide rails (pos. 1) in the heating section, pushing it fully in. Ensure the threaded connections (pos. 2 and 3) face the front of the unit towards the gable, as shown in the figure.
Diagram shows the water heating battery being inserted into guide rails.
- Fasten the water battery with two bolts (pos. 1). Reinstall the motor. Connect the frost protection sensor (pos. 2) to terminals 44 and 40 in the electrical connection box. Use the prepared internal lead-throughs for wiring between compartments.
Diagram shows the battery fastened and sensor connected.
- Connect the water piping to the threaded connections (pos. 1 and 2). These tubes have hexagonal connectors with internal 1/2" threads. Cover plates around the pipes are fixed to the unit. Arrows in the figure indicate hot water connection direction.
Caution: Take care not to damage the water battery when connecting water pipes. Use a spanner to tighten the connection.
- Connect all necessary accessories, such as water valves and valve actuators. Refer to the enclosed wiring diagram for details.
- Use the control panel to program the unit for water heating. Refer to the separate document "Configurating the software for water heating" available on www.systemair.com.
Diagram shows a control panel with buttons and a display.
4.7.3 Electric Connections
All electrical connections are made in the electrical connection box located at the front of the unit. The hatch is removed by unscrewing four screws (Figure 12). The unit must not be put into operation before all electrical safety precautions are read and understood. Refer to the enclosed wiring diagram for internal and external wiring. External connections for accessories are made to terminals inside the electrical connection box.
Figure 12 shows how to open the electrical connection box.
Danger:
- Make sure that the Mains supply to the unit is disconnected before performing any maintenance or electrical work!
- All electrical connections must be carried out by an authorized installer and in accordance with local rules and regulations.
4.7.3.1 Electrical connection box, Components
Topvex SC03-11 units are equipped with a built-in regulator and internal wiring. Figure 13 shows the electrical connection box components.
| Position | Description |
|---|---|
| 1 | Regulator E-28 |
| 2 | Transformer 230/24V AC |
| 3 | Terminals for internal and external components |
| 4 | Terminals for internal wiring |
| 5 | Terminals for mains supply to the unit |
| 6 | Contactor (K1) |
| 7 | Contactor (K2) On/Off Pump control water (HW units only, not present in EL-units) |
| 8 | Automatic fuse |
| 9 | Automatic fuse for heater |
| 10 | Contactor (K3) for on/off control of EL heater |
| 11 | TTC El heater control |
Figure 13 shows the electrical components within the connection box.
4.7.3.2 TopvexSC03, SC04, SC06, SC08, SC11 External Connections
Table 4: Connections to external functions
| Terminal block | Description | Remark | |
|---|---|---|---|
| PE | Ground | ||
| N | Earthed neutral (supply voltage) | ||
| L1 | Phase (supply voltage) | Used for phase 230V 1~ if the unit has this mains supply | |
| L2 | Phase (supply voltage) | 400V 3~/230V 3~ | |
| L3 | Phase (supply voltage) | 400V 3~/230V 3~ | |
| G0 | Reference (Water valve actuator mains supply) | 400V 3~/230V 3~ | |
| G | Mains supply (Water valve actuator) | 24V AC | |
| 10 | DO ref | DO reference | G (24V AC) |
| 121 | DO 2 | Outdoor/Exhaust air damper | 24V AC Max. 2,0 A continuous load |
| 11 | L1 | Circulation pump hot water system | 230V AC |
| 141 | DO 4 | Cooling pump | 24V AC |
| 151 | DO 5 | DX Cooling step 1 | 24V AC |
| 161 | DO 6 | DX Cooling step 2 | 24V AC |
| 171 | DO 7 | Sum alarm output for DO signals | 24V AC |
| 30 | AI Ref | AI reference | neutral |
| 31 | AI 1 | Sensor supply air | Use terminal 30 as reference |
| 40 | Agnd | UI reference | neutral |
| 412 | UAI 1/(UDI 1) | Pressure transmitter extract air | Use terminal 40 as reference |
| 422 | UAI 2/(UDI 2) | Pressure transmitter supply air | Use terminal 40 as reference |
| 44 | UAI 3/(UDI 3) | Frost protection sensor water heating battery | Use terminal 40 as reference |
| 43 | DI ref | DI reference | |
| 50 | B | Exo-line B | Modbus, Exo-line connection |
| 51 | A | Exo-line A | Modbus, Exo-line connection |
| 52 | N | Exo-line N | Modbus, Exo-line connection |
| 53 | E | Exo-line E | Exo-line connection |
| 57 | + | LON + | Option |
| 58 | - | LON - | Option |
| 59 | Egnd | LON Egnd | Option |
| 713 | DI 1 | External alarm | Normally open contact Use terminal 4 as reference |
Table 4 (cont.): Connections to external functions
| Terminal block | Description | Remark | |
|---|---|---|---|
| 743 | DI 4 | Extended running | Normally open contact Use terminal 4 as reference |
| 753 | DI 5 | Fire alarm | Normally open contact Use terminal 4 as reference |
| 763 | DI 6 | External stop | Normally open contact Use terminal 4 as reference |
| 90 | Agnd | AO Reference | neutral |
| 93 | AO 3 | Control signal valve actuator, Water Heating | Use terminal 90 as reference |
| 94 | AO 3 | Control signal valve actuator, Cooling | Use terminal 90 as reference |
1. Maximum current load for all DO combined: 8A
2. Connection to external pressure sensor in case of pressure controlled unit (VAV)
3. These inputs may only be wired to voltage free contacts
4.7.3.3 BMS Connection
Communication possibilities for standard controller E-28 WEB:
- RS485(Modbus): 50-51-52
- RS485(Exoline): 50-51-52-53
- TCP/IP(Exoline)
Note: RS-485 port and TCP/IP port cannot be used simultaneously! Possible communications are Modbus or Exoline via RS-485, or Exoline (WEB) via TCP/IP.
4.8 Installing the Control Panel
4.8.1 Dimensions
Figure 14 shows the dimensions (in mm) of the control panel.
| Position | Dimensions (mm) |
|---|---|
| A | 115.0 |
| B | 94.0 |
| C | 26.0 |
| D | c/c 60.0 |
| E | 50.5 |
4.8.2 General information
The control panel is delivered connected to the Corrigo control unit in the electrical connection box. The cable length is 10 m. The wires on the back of the control panel can be loosened if the panel needs to be detached from the signal cable. Self-adhesive magnet strips are included for installation on a metal surface.
4.8.3 Installation
- Find an appropriate place to install the control panel. The standard maximum length between the control panel and the unit is 10 m.
- If necessary, drill two holes in the wall to hang the control panel. The center-to-center distance for the holes is 60 mm (pos. 1, Figure 15).
4.9 Additional equipment
For information regarding additional external equipment such as valve actuators, motorized dampers, E-tool, wall grilles, etc., refer to the technical catalogue and its enclosed instructions. For electrical connections of external components, see the enclosed wiring chart.
Figure 15 shows control panel wire connections with positions 1-7 described.
