<html><head><link rel="stylesheet" href="systemair.css" type="text/css" /></head><body><span id="A1"><p class="header1">Systemair E28 integrated control system</p><p class="poffset1">Topvex air handling units are built with a complete and fully integrated control system. </p><p class="poffset1">Before shipment the unit has been assembled and passed a final functional test and inspection.</p><p class="flowchart">FLOWCHART</p><p class="header2">Switchboard and mains supply</p><p class="poffset2">The switchboard with terminal blocks, relays, fuses, 24 V AC power supply and controller.&#xB;Mains power supply is to be connected directly in the main switchboard and cables for external components in the main switchboard or in terminal boxes at the gable of the unit. The unit should be permanently connected to the mains electric supply through a lockable safety switch. The safety switch is not mounted from the factory but delivered with the unit. </p><p class="header2">Controller and hand terminal</p><p class="poffset2">The controller is installed in the switchboard, and the programming and normal handling is carried out from a separate cable-connected (10m) hand terminal with display and buttons - the Systemair Control Panel - the SCP. The protection class of the hand terminal is IP 41. </p><p class="header2">Schedules</p><p class="poffset2">The regulator has individual schedules for start, stop and air flow rate for each week-day as well as schedules for holidays.</p><p class="poffset2">The regulator has an automatic summer-winter-time change over. </p><p class="poffset2">Outside normal operating hours free cooling is available according to settings. </p><p class="header2">Constant Air Volume (CAV) - fixed air volumes in m³/h</p><p class="poffset2">The air flow rates of supply and extract air are controlled separately. The supply, extract, high and low airflow in m³/h is set separately on the hand terminal. The differential pressures across the fans are measured by pressure transducers. Based on the pressures the actual air flows are calculated by the controller. A PI-regulator is maintaining the set point values by controlling the speed of the fans.</p><p class="header2">Access rights - passwords</p><p class="poffset2">There are 3 different log-on levels</p><p class="bullet1">Basic level (no password) - read-only access to all settings and parameters</p><p class="bullet1">Operator level (password) - read/write access to all settings and parameters, but no access right to the configuration of the system</p><p class="bullet1">Administrator level which has the highest authority (special password) - full read/write access to all settings and parameters (also configuration of the whole system)</p><p class="header2">Alarms and safety functions</p><p class="poffset2">If an alarm condition occurs, the Alarm LED on the hand terminal will flash. The LED will continue to flash as long as there are unacknowledged alarms. Alarms are logged in the alarm list. The list shows the type of alarm, date and time for the alarm and alarm class - A, B or C:</p><p class="bullet1">Alarm type A will stop the fans and close the dampers or switch the unit to a special mode according to the configuration </p><p class="bullet1">Alarm type B is only to inform the users about a failure, and the unit is still running as well as possible</p><p class="bullet1">Alarm type C - only to inform the user that the unit has been switched away from automatic running mode to manual control</p><p class="poffset2">If water heater is used then for frost protection a temperature sensor is installed in a return circuit of the coil. The control signal to the mixing valve is kept at a level that secures that water return temperature at all times is held at a factory set minimum. This protection is also active when the unit is not running. This extended system offers the maximum of protection safety. If the water temperature is getting too low anyway the unit including fans is shut down.</p><p class="header2">Flexible System</p><p class="poffset2">A skilled service technician - on the site and on the demand from the user - will be able to adapt the regulation further to the requirements of the users;</p><p class="bullet1">The air flow can be adaptable to the CO2 concentration for CAV air flow regulation as well as for VAV air flow regulation</p><p class="bullet1">The temperature control mode can be changed.</p><p class="bullet1">In addition to the fixed schedule an external start signal for extended operation is available.</p><p class="bullet1">In addition or as an alternative to the fixed schedule an external start/stop input signal is available.</p><p class="bullet1">A large number of other alternative functions are optional.</p></span><span id="A2"><p class="header1">Systemair E28 integrated control system</p><p class="poffset1">Topvex air handling units are built with a complete and fully integrated control system. Before shipment the unit has been assembled and passed a final functional test and inspection.</p><p class="flowchart">FLOWCHART</p><p class="header2">Switchboard and mains supply</p><p class="poffset2">The switchboard with terminal blocks, relays, fuses, 24 V AC power supply and controller. </p><p class="poffset2">Mains power supply is to be connected directly in the main switchboard and cables for external components in the main switchboard or in terminal boxes at the gable of the unit. The unit should be permanently connected to the mains electric supply through a lockable safety switch. The safety switch is not mounted from the factory but delivered with the unit. </p><p class="header2">Controller and hand terminal</p><p class="poffset2">The controller is installed in the switchboard, and the programming and normal handling is carried out from a separate cable-connected (10m) hand terminal with display and buttons - the Systemair Control Panel - the SCP. The protection class of the hand terminal is IP 41. </p><p class="header2">Schedules</p><p class="poffset2">The regulator has individual schedules for start, stop and air flow rate for each week-day as well as schedules for holidays.</p><p class="poffset2">The regulator has an automatic summer-winter-time change over. </p><p class="poffset2">Outside normal operating hours free cooling is available according to settings. </p><p class="header2">Variable Air Volume (VAV) control through constant pressure in ducts</p><p class="poffset2">The air pressure of supply and extract air are controlled separately. The supply, extract, high and low air pressure in Pa is set separately on the hand terminal. The total air pressures are measured by pressure transducers in the supply air duct and in the extract air duct. A PI-regulator maintains the set point value by controlling the speed of the fans. </p><p class="header2">Access rights - passwords</p><p class="poffset2">There are 3 different log-on levels</p><p class="bullet1">Basic level (no password) - read-only access to all settings and parameters</p><p class="bullet1">Operator level (password) - read/write access to all settings and parameters, but no access right to the configuration of the system</p><p class="bullet1">Administrator level which has the highest authority (special password) - full read/write access to all settings and parameters (also configuration of the whole system)</p><p class="header2">Alarms and safety functions</p><p class="poffset2">If an alarm condition occurs, the Alarm LED on the hand terminal will flash. The LED will continue to flash as long as there are unacknowledged alarms. Alarms are logged in the alarm list. The list shows the type of alarm, date and time for the alarm and alarm class - A, B or C:</p><p class="bullet1">Alarm type A will stop the fans and close the dampers or switch the unit to a special mode according to the configuration </p><p class="bullet1">Alarm type B is only to inform the users about a failure, and the unit is still running as well as possible</p><p class="bullet1">Alarm type C - only to inform the user that the unit has been switched away from automatic running mode to manual control</p><p class="poffset2">If water heater is used then for frost protection a temperature sensor is installed in a return circuit of the coil. The control signal to the mixing valve is kept at a level that secures that water return temperature at all times is held at a factory set minimum. This protection is also active when the unit is not running. This extended system offers the maximum of protection safety. If the water temperature is getting too low anyway the unit including fans is shut down.</p><p class="header2">Flexible System</p><p class="poffset2">A skilled service technician - on the site and on the demand from the user - will be able to adapt the regulation further to the requirements of the users;</p><p class="bullet1">The air flow can be adaptable to the CO2 concentration for CAV air flow regulation as well as for VAV air flow regulation</p><p class="bullet1">The temperature control mode can be changed.</p><p class="bullet1">In addition to the fixed schedule an external start signal for extended operation is available.</p><p class="bullet1">In addition or as an alternative to the fixed schedule an external start/stop input signal is available.</p><p class="bullet1">A large number of other alternative functions are optional.</p></span><span id="A3"><p class="header1">Systemair E17S integrated control system</p><p class="poffset1">Topvex air handling units are built with a complete and fully integrated control system. All internal components and cables have been installed.</p><p class="poffset1">Before shipment the unit has been assembled and passed a final functional test and inspection.</p><p class="flowchart">FLOWCHART</p><p class="header2">Switchboard and mains supply</p><p class="poffset2">The switchboard with terminal blocks, relays, fuses, 24 V AC power supply and controller is inside the unit.</p><p class="poffset2">Mains power supply is to be connected directly in the main switchboard and cables for external components in the main switchboard or in terminal boxes at the gable of the unit. The unit should be permanently connected to the mains electric supply through a lockable safety switch. The safety switch is not mounted from the factory but delivered with the unit. </p><p class="header2">Controller and hand terminal</p><p class="poffset2">The controller is installed in the switchboard, and the programming and normal handling is carried out from a separate cable-connected (10m) hand terminal with display and buttons - the Systemair Control Panel - the SCP. The protection class of the hand terminal is IP 41. </p><p class="header2">Schedules</p><p class="poffset2">The regulator has a week-base clock function. This means that the unit s operation time can be programmed with two individual times for each week-day. The clock has an automatic summer-winter-time changeover. </p><p class="poffset2">For each week-day two individual Periods, when the unit should be ON, can be set. This ON time can</p><p class="poffset2">be set to low, medium or high fan speed. Remaining time (not programmed) can be set to shut off, low, medium or high fan speed. </p><p class="poffset2">Outside normal operating hours free cooling is available according to settings.</p><p class="header2">Fan control</p><p class="poffset2">The units have EC-motors with very high efficiency. The EC motors are controlled in three steps via the control unit. All three steps are step-less variable between 0 and 100% and each fan are step-less differentiable by using two built in resistors. </p><p class="header2">Access rights - passwords</p><p class="poffset2">The menu system has two different log on levels. In the first level it is only possible to set temperature values and activate extended/forced operation. In the second level it is possible to reset alarms and to change settings like Time/Date, week program, time for extended running, reset filter alarm and other functions.</p><p class="header2">Alarms and safety functions</p><p class="poffset2">If an alarm condition occurs, the Alarm LED on the hand terminal will flash. The LED will continue to flash as long as there are unacknowledged alarms. </p><p class="poffset2">If water heater is used then for frost protection of the heating coil a temperature sensor is installed in a return circuit of the coil. The control signal to the mixing valve is kept at a level that secures that water return temperature at all times is held at a factory set minimum. This protection is also active when the unit is not running. This extended system offers the maximum of protection safety. If the water temperature is getting too low anyway the unit including fans is shut down.</p><p class="header2">Flexible System</p><p class="poffset2">A service technician - on the site and on the demand from the user - will be able to adapt the regulation further to the requirements of the users;</p><p class="bullet1">The temperature control mode can be changed to; Supply air control, Supply air control with outdoor temperature compensation or Extract air control (cascade).</p><p class="bullet1">In addition to the fixed schedule an external start signal for extended/forced operation is available.</p><p class="bullet1">Cooling recovery can be activated. </p><p class="bullet1">Night cooling can be activated.</p><p class="bullet1">An external fire alarm input can be activated. The fire alarm input will then forced the unit to run on high speed or to be switched off.</p><p class="bullet1">Also other alternative functions are possible.</p><p class="header2"> Supply air temperature control </p><p class="poffset2">The supply air temperature is kept at the set-point value by measuring the actual temperature at the Supply air sensor (SS) and then controlling the output signals for Heat exchanger, Heater and Cooler (if installed). </p><p class="poffset2">A single PI control loop is used.</p><p class="poffset2">The set-point value is set by using the front panel. </p></span><span id="C1"><p class="header2">Damper - supply air</p><p class="poffset2">The damper is not mounted on the unit. Mount the damper on the outdoor air entrance. The damper is opened and closed by a spring return damper motor.</p></span><span id="C2"><p class="header2">Damper - extract air</p><p class="poffset2">The damper is not mounted on the unit. Mount the damper on the exhaust air entrance. The damper is opened and closed by a spring return damper motor. </p></span><span id="F1"><p class="header2">Communication to BMS systems with TCP/IP</p><p class="bullet1">The controller is prepared for communication via TCP/IP to a BMS system (Building Management System) </p><p class="poffset2">The controller can work as a stand-alone system without any support from other controllers. </p></span><span id="F2"><p class="header2">Communication to BMS systems with LON</p><p class="bullet1">The controller is prepared for communication via LON communication port to a BMS system (Building Management System)</p><p class="bullet1">By use of LonWorks networks variables according to the LonMark-guidelines are available. </p><p class="poffset2">The controller can work as a stand-alone system without any support from other controllers. </p></span><span id="F3"><p class="header2">Communication to BMS systems with MODBUS</p><p class="poffset2">The controller is prepared for communication via RS485 communication port to a MODBUS based BMS system (Building Management System). </p><p class="poffset2">The controller can work as a stand-alone system without any support from other controllers. </p></span><span id="F4"><p class="header2">Modbus via RS 485, EXO line via TCP/IP (built-in WEB)</p><p class="poffset2">The controller is prepared for communication via RS485 communication port to a MODBUS based BMS system (Building Management System). </p><p class="poffset2">The controller can work as a stand-alone system without any support from other controllers.</p><p class="poffset2"> </p></span><span id="G1"><p class="header2">2-way valve - heating coil</p><p class="poffset2">Heating coil capacity is controlled by a 2-way control valve. The valve is de livered unfixed in a separate package.</p></span><span id="G2"><p class="header2">3-way valve - heating coil</p><p class="poffset2">Heating coil capacity is controlled by a 3-way control valve. The valve is de livered unfixed in a separate package.</p></span><span id="H1 Not for Topvex"><p class="header2">2-way valve - cooling coil - chilled water</p><p class="poffset2">Cooling coil capacity is controlled by a 2-way control valve with a modulating valve motor.</p><p class="poffset2">Valve motor cables are connected and tested by Systemair - ready for start-up after installation of the valve at the return pipe of the coil.</p></span><span id="H2 Not for Topvex"><p class="header2">3-way valve - cooling coil - chilled water</p><p class="poffset2">Cooling coil capacity is controlled by a 3-way control valve with a modulating valve motor.</p><p class="poffset2">Valve motor cables are connected and tested by Systemair - ready for start-up after installation of the valve at the return pipe of the coil. </p></span></body></html>