Topvex FC Compact Air Handling Unit Operation and Maintenance Instructions Document in original language | 125918 · A003 GB
125918 | A003
Contents 1 2 3 4 5 Warnings.......................................................1 Product Description..........................................2 2.1 Internal components ...............................2 2.2 Description of internal components ............2 2.2.1 Supply and Extract air Fans ........................................2 2.2.2 Supply and Extract air Filters ......................................3 2.2.3 Heat Exchanger .........................3 2.2.4 Temperature sensor....................3 2.
Warnings | 1 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 door handles are only intended to be used during the installation and service.
2 | Product Description 2 Product Description 2.1 Internal components Fig.
Product Description | 2.2.2 Supply and Extract air Filters The filters are of bag filter type with filter quality F7 for the supply air filter and M5 for the extract air filter. The filters need to be replaced when polluted. New filters can be acquired from your installer or wholesaler. 2.2.2.1 Pressure guard for filters A pressure guard measures the differential pressure over the supply and extract air filters (pos. 9 figure 1.
4 | Interface Description Fig.
Commissioning | 3.1.1 Operating the control panel Fig. 3 The control panel Position Explanation 1 Alarm button: Gives access to the alarm list. 2 Alarm LED: Indicates alarm by flashing red light. 3 Write LED: Indicates by flashing yellow light that parameters can be set or changed. 4 OK button: Press this button to be able to change or set parameters whenever possible. Also used to move between changeable parameters in one dialogue window frame.
6 | Commissioning • Outdoor air intake is positioned with sufficient distance to pollution sources (kitchen ventilator exhaust, central vacuum system exhaust or similar) • All external equipment are connected • The following data is available: • Intended configuration, for example temperature control functions, fan control, external control functions etc. • How the unit is supposed to operate according to a weekly schedule (normal and reduced speed) 4.
Commissioning | See below menu overviews that display the available menus in the Operator level followed by the “Service level” manual. To enter Service level use code 2222 in the “Access rights” menu. For operator level use code 1111.
8 | Commissioning 4.3 Menu overview Below menu overview shows both the Operator, Service and Administrator level. The overview of the parts unique to the levels in below table are marked with different background color. To logon to Operator level use code 1111 under Access rights. Main menu item To logon to Administrator level use code 3333 under Access rights. To logon to Service level use code 2222 under Access rights.
Commissioning | Main menu item Sub -menu item 1 Sub-menu item 2 Explanations →AI exp3 Status of the Analogue inputs for expansion unit. O nl y v is i bl e for co u nte r/ c ro s s f l ow u n i t s w i t h a co n n e c t e d p re s s u re m o d u l e →DI Status of the Digital inputs. →UI Status of Universal Analogue inputs or Universal Digital inputs. →UI exp3 Status of the Universal Analogue inputs for expansion unit.
10 | Commissioning Main menu item Sub -menu item 1 Sub-menu item 2 Explanations Actual heat recovery efficiency. The function calculates the heat exchangers temperature efficiency in % when the output signal to the exchanger is higher than 5% and the outdoor temperature is lower than 10° C. Efficiency calculated from the Outdoor, Extract and Efficiency air temperature. When the control signal is lower than 5% or the outdoor temperature is higher than 10° C the display will show 0%. Efficiency exch.
Commissioning | Main menu item Sub -menu item 1 Sub-menu item 2 Explanations Outdoor comp.Setp. –20°C = 0 m³/h 0°C = 0 m³/h Act. Comp: 0 m³/h Set the SAF airflow compensation for the settable outdoor temperature. The outdoor compensation is linear and is set using two parameter pairs which give the value of the compensation at two different outdoor temperatures. The compensation can be positive or negative. Shows the actual airflow compensation.
12 | Commissioning Main menu item → Time settings Sub -menu item 1 Sub-menu item 2 Explanations Outdoor comp.Setp. 1 —20°C = 0 Pa 10°C = 0 Pa Act. Comp: 0 Pa Set the EAF pressure compensation for the settable outdoor temperature. The outdoor compensation is linear and is set using two parameter pairs which give the value of the compensation at two different outdoor temperatures. The compensation can be positive or negative. Shows the actual pressure compensation.
Commissioning | Main menu item Sub -menu item 1 Sub-menu item 2 Explanations → Holidays Holidays (mm:dd) 1:01–01 — 01–02 2:01–01 — 01–01 3:01–01 — 01–01 Set up to 24 separate possible holiday periods for a full year. A holiday period can be any number of consecutive days from one and upwards. The dates are in the format: MM: DD. When the current date falls within a holiday period, the scheduler will use the settings for the weekday “Holiday”.
14 | Commissioning Main menu item Sub -menu item 1 Sub-menu item 2 Explanations P1–Cooling Auto Set the pump control for the cooling coil to Auto, On or Off Fire damper Auto Set the Fire damper to Auto, Open or Close Note: N e e d s to be ac ti vate d i n o rd e r t o b e v i s i b l e h e re C o n f i g u ra t i o n o f f i re damper fun ct io ns are m a d e a t Administrator level Outdoor air damper Auto S e t the Outdoor air damper to Auto, Open or Close Exhaust air damper Auto S e t the Exha
Commissioning | Main menu item Sub -menu item 1 Sub-menu item 2 Explanations → Frost protection Active Setp shutdown: 25.0°C P-band active: 5.0° C Status for frost protection. When running mode switched to "Off". Shutdown controller will control the heating output to maintain a constant settable temperature at the frost protection sensor for the hot water coil.
16 | Commissioning Main menu item Sub -menu item 1 Sub-menu item 2 → Sensor settings → Control function Fan control → Extra sequency Y4 Explanations Setup of sensor types and control range. Control function Mode: Cascade extract ctrl S e t type of temperature control function you want the unit to operate under. Choose between Room control, Cascade extract ctrl, Outd comp room, Outd comp extr air, Supply air control, Outdoor comp.
Commissioning | Main menu item Sub -menu item 1 → Support control → CO2/VOC Control Sub-menu item 2 Explanations Time to block heat output after Free cooling 60 min S e t the delay in minutes from the time where the free cooling sequence has stopped until a possible heating sequence is initiated, i.e.
18 | Commissioning Main menu item Sub -menu item 1 Sub-menu item 2 Explanations Fire alarm input Normally open Damper exercise Fire alarm input can be configured to normally open or normally closed. Fire alarm input is also available to be configure from digital inputs. Note the risk of a twice changed signal can create an undesired function. Activate the fire damper exercising, choose between No, Yes unit running or Yes unit stopped. Set the parameters for damper exercise in the submenu.
Commissioning | Main menu item Sub -menu item 1 Sub-menu item 2 Explanations → Communication Function Port1 Slave Choose between different communications Slave, Expansion unit, Freq conv/ Press tran, External display, Exp and freq conv or Exp and ext display. 19 → Function Port2 Exp and ext display TCP/IP → Access rights 4.4 → Log on Log on Enter password xxxx Actual level: None L o g o n to service level by entering a 4-digit code.
20 | Commissioning When free cooling is active, the fans run at normal speed or the set value for pressure/flow control and the digital output Free cooling is active. The outputs Y1-Heating, Y2-Heat exchanger and Y3-Cooling are shut down. After free cooling has been activated, the heating output is blocked for 60 minutes (configurable time). When using free cooling, an offset to normal fan control setpoint is adjustable.
Commissioning | 4.5 Defrost function By measuring the pressure difference over the exchanger the need for defrosting can be detected. The differential pressure transmitter is auto calibrated by the system to obtain the correct pressure in relation to the airflow. Manual calibration is possible, e. g. after cleaning of exchanger. The bypass damper opens to reduce the flow of cold outdoor air through the heat exchanger.
22 | Maintenance 5 Maintenance 5.1 Important 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 • Although the Mains supply to the unit has been disconnected there is still risk for injury due to rotating parts that have not come to a complete standstill.
Maintenance | 5.3 Maintenance instructions 5.3.1 Open the doors The doors are secured with safety wire connection to ensure that the doors don’t fall downwards with force (figure 5). Open the door using the enclosed handles, push back the door to be able to unhook the two carabiners. Lower the door carefully. The middle hatch is opened by unscrewing 4 screws (figure 6.) Fig. 4 Note: Attach the safety wire again when maintenance is finished.
24 | Maintenance 5.3.2 Changing Supply/Extract air filter The bag filter cannot be cleaned and must be changed when necessary. New filters can be ordered from Systemair. Operation time between filter changes depends on the air pollution at the installation site. A differential pressure switch indicates when it’s time to change the filters. This will trigger an alarm in the control panel. When this occurs do the following: 1. Replace the filters with new ones as described below. 2.
Maintenance | 5.3.3 Checking the heat exchanger After a long time of use dust may build up in the exchanger and block the airflow. It is important to clean the exchanger regularly (once a year) to maintain high efficiency. The heat exchanger can be taken out of the unit for maintenance (figure 6). Danger • Risk of personal injury! The heat exchanger is heavy. There is a risk that the heat exchanger falls out of the unit.
26 | Maintenance The fans are easily taken out from the unit (figure 7) by loosening 4 screws and disconnecting the fast couplings to the electric wires. Depending on the accessories installed, remove the tubing next to the fast couplings for the extract air fan or both the extract air fan and supply air fan. Clean the fans with a cloth or a soft brush with a recommended interval of once per year. Do not use water. White spirit can be used to remove obstinate settlements.
Maintenance | 5.3.7 Cleaning the extract louvers and inlet diffusers The system supplies treated outdoor air to the building and extracts the used indoor air via the duct system and diffusers/louvers. Diffusers and louvers are mounted in ceilings/walls in bedroom, living room, wet rooms, WC etc. Remove diffusers and louvers and wash in hot soapy water if required. Diffusers/ louvers must be put back with their original settings and positions in order not to unbalance the system.
28 | Troubleshooting 6 Troubleshooting Should problems occur, please check or correct the following before contacting your service representative. Always check if there are any alarms active in the control panel. 1. F a n ( s ) d o n o t s t a r t • Check if there are any alarm messages • Check that the fuses are not defect (pos.7 figure 2) • Check the settings in the control panel (times, week schedule, auto/manual operation etc.) 2.
Service | 7 Service Before calling your service representative, make a note of the specification and production number from the type label (figure 8) 5 Ver. A Topvex XXXX 230/400V 25 A 4016 W 50Hz IP23 225kg 16kW 16kW Serial. no: 1234/567891-0001/140214 Systemair Sverige AB Industrivägen 3 SE-73930 Skinnskatteberg Sweden www.systemair.com 2 3 4 Fig.
Phone +46 222 440 00 Fax +46 222 440 99 www.systemair.
