Disclaimer ..........1 Warranty ..........1 EU Declaration of Conformity ....2 Warnings............3 Product description..........3 Internal components .......3 Duct connections..........7 Topvex SC..........7 Topvex TC..........8 Access control cabinet ........9 Maintenance ..........10 Maintenance intervals ......10 How to replace supply/extract air filter ..........11 How to clean the heat exchanger.....
Overview | Overview This manual includes the information required for operating and maintaining the heat recovery unit. If other accessories not included at delivery are in use, read their separate instructions. Intended use The units are intended to provide ventilation and depending on settings, heat recovery, air heating or free cooling. Disclaimer The manufacturer may not be held liable for any damage to people or property caused by improper installation, start- up and/or improper use of the unit and/or failure to implement the procedures and instructions included in this manual.
Ventilation for buildings – Air handling units – Rating and performance for units, components and sections. The manufacturer hereby confirms that Topvex SC, TC The declaration applies only to product in the condition it comply with all applicable requirements in the following was delivered in and installed in the facility in accordance directives and regulations.
Warnings | Warnings The following admonitions will be presented in the different sections of the document: Danger • Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious injury. Warning • Indicates a potentially hazardous situation that may result in minor or moderate injuries. Caution •...
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3.1.4 Heat exchanger Topvex SC, TC models are equipped with a counter flow heat exchanger and a by-pass damper. The operation of the by-pass damper is automatic and depends on the set temperature or if defrosting is in operation. For defrosting a pressure transmitter is installed which measure the differential pressure over the heat exchanger.
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Product description | 3.1.8 Free cooling description This function is used during the warm period to save energy by using cold outdoor air, e.g. during night time, to cool down the building and thereby reducing the need for cooling during the day time. Note: The following is only valid if the free cooling function is activated in the program menu.
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| Product description 3.1.9 Section defrosting A differential pressure sensor measures the pressure drop over the exchanger’s extract/exhaust air side to detect any frost build up in the exchanger. The system automatically calibrates the exchanger’s nominal pressure drop to obtain the correct pressure limit in relation to the airflow.
Duct connections | Duct connections Topvex SC Supply air Extract air Exhaust air Outdoor air Description Position Fan supply air Fan extract air Filter supply air Filter extract air Heat exchanger Access control cabinet Damper by-pass outdoor air/Section defrosting (only units with section defrosting)
| Duct connections Topvex TC Supply air Exhaust air Outdoor air Extract air Description Position Fan supply air Fan extract air Filter supply air Filter extract air Heat exchanger Access control cabinet Damper by-pass outdoor air/Section defrosting (only units with section defrosting) Control box for section defrosting (only for unit with section defrosting) Internal electrical connection box Re-heater battery (EL or HWH/HWL)
Access control cabinet | Access control cabinet Danger Disconnect the mains power supply to the unit before moving the Access control cabinet or opening the lid. Warning Before obtaining access to terminals, all supply circuits must be disconnected. Access control cabinet is mounted on top of the unit. It is possible to remove the cabinet and mount it in a suitable loca- tion.
| Maintenance Maintenance Danger • Disconnect the mains power supply to the unit is before performing any maintenance or electrical work! • Carry out all electrical connections in accordance with local rules and regulation. Electrical connections must be carried out by an authorized installer. Warning •...
How to replace supply/extract air filter The bag filter must be changed when necessary, they cannot be cleaned. New filters can be ordered from Systemair. Operation time between filter changes depends on the air quality. A differential pressure transmitter indicates when it is time to change the filters, which will trigger an alarm in the control panel.
| Maintenance How to clean the fans Caution • Do not use water! Clean the fans with a cloth or a soft brush. White spirit can be used to remove obstinate settlements. Allow drying prop- erly. It is also possible to remove the fan for cleaning. 1.
Maintenance | How to clean the electrical heating battery Clean the heating rods with compressed air, vacuum or a brush. Remove the fan for access, see chapter 6.4. Where to reset tripped fuses Possible to reset tripped fuse without opening the hatch. Fig.
| Maintenance How to reset the manual overheat protection (EL units) Push the red button on the electrical heater, figure 3, pos 3. Possible to reset fuse and overheat protection for EL units without opening the hatch to the compartment. Fig.
Maintenance | How to replace the fan module When ordering a replacement fan module, note if it is supply or extract fan. This is important for the fan to get the cor- rect Modbus address. 1. Disconnect the fast coupling to the electric wire and the blue and red tubes from the supply air fan (standard units with CAV) 2.
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| Maintenance Remove damper Warning Beware of sharp edges. Use gloves and protective clothing. 4. Loosen the bolts holding the damper rails. Remove the damper rails. 5. Rotate the damper and lift in the direction away from the exchanger. 6. Lift the damper out from the middle section. Caution Do not drag the damper on the exchanger.
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Maintenance | Remove the door beam 8. Loosen the screw on the front door beam (6 screws) and remove the beam. Replace the exchanger Caution • Handle the heat exchanger with care. • The heat exchanger is heavy. 9. Push the exchanger out. 10.Remove the old exchanger.
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| Maintenance Fasten the door beam 12.Fasten the door beams (6 screws on front and 6 screws on the back). Fasten the rail holding the exchanger 13.Fasten the bolts holding the rail on the opposite side of the partition wall. 162528 | A001...
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Maintenance | Fasten the damper 14.Insert the damper in the area above the exchanger. Caution Do not drag the damper on the exchanger. 15.Lift the damper with the short end on the rail at the outer beams. Observe the small hooks to secure the damper. 16.Fasten the damper rails with the bolts.
| Maintenance 6.11 How to change the internal battery in CU27–C Internal battery error is shown in the control panel when it is time to change the battery. Caution ESD protection; i.e. an earthed wristband must be used! Replacement battery is of type CR2032. Open the CU27–C with a screwdriver on the bottom edge.
Troubleshooting | Troubleshooting Check or correct the following before contacting your service representative. Always check if there are any alarms ac- tive in the control panel (chapter 8). 1. Fan(s) do not start • Check if there are any alarm messages. •...
| Alarms Alarms A LED-light in the home button indicate the status of the air handling unit. • Fixed green — Status ok (no active alarms). • Flashing red — Active/returned alarms in one or several air handling units. • Fixed red — Acknowledged/blocked alarms in one or several air handling units, alarms not reset. Different alarm levels Class A alarm Needs to be acknowledged...
If other accessories not included at delivery are in use, read their separate instructions. Commissioning record form is available on www.systemair.com. Spare parts See spare parts at https://portal.systemair.com, or use the QR code on the type label, figure 6. 162528 | A001...
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Systemair Sverige AB Industrivägen 3 SE-739 30 Skinnskatteberg, Sweden Phone +46 222 440 00 www.systemair.com...
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