NATURAL VENTILATION SYSTEM The Complete Solution - Gilberts ...

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Control Display OptionsMISTRALE LCD displayThe LCD unit may be used to provide a programmable interface to the Radiatorsystem for overall strategy and comfort control.A switch on the LCD unit displays its module address for about 4 seconds.Up to 8 LCD units can be connected to the LON cable, which can be up to100m long. Each LCD unit must be given a different module address (0 to n).To set the LCD module address hold down all three buttons for >10 seconds.The unit will then display “module X”, press the right button to increase the moduleaddress and the left button to decrease it.Pressing the centre button selects the next menu item, which is the LCD backlight ontime, this can be between 1 and 25 seconds or OFF for always off and ON for alwayson. Once set up just wait 10 seconds (without pressing a button) for the display toreturn to normal and the new settings to be saved.MODBUSThe TC02 unit supports the MODBUS RTU open network protocol. This allowsconnection to any standard BMS, a PC based area control system or HID panel.The hardware interface is half duplex RS485 (single twisted pair) and we normallyuse a unit load driver chip with +/-60 volt line protection (LT1785CN8).There are four screw terminal connections on the board these are RS485 B, RS485 A,Shield In, and Shield Out. Either or both Shield In and Shield Out can be connectedto local ground via a jumper link. Normally only the Shield Out is linked to local ground.The open protocol we use is MODBUS RTU at 19200 baud, no parity, 8 data bits,and 1 stop bit. Each unit has a network address ID from 1 to 247 (8bit) settablefrom the LCD interface.The following MODBUS function codes are implementedRead Holding Registers (3)Write Single Register (6)Write Multiple registers (16)LON LED HVAC plate SpecificationThe LON LED HVAC plate is design as a direct replacement for the standardplastic wall units found on many HVAC systems.The unit consist of user display board of approximately 95 x 60 mm fittedwith a stainless steel front plate. This board has ten LEDs and two push buttons forcontrolling damper positions and set point. It is connected to the TC range of controlunits via a twin twisted pair cable.• Can be surface or flush mounted in a standard UK back-box or patress.• Simple multi-drop digital twin twisted pair connection to controller.• Powered via the twisted pair cable.• Five temperature settings indicated by multi-colour LED’s• Four Fresh Air damper positions and ‘closed’ indicated by five LED’s.• Flashing LED’s indicate status information such as Damper or sensor fail.• Engineering mode for full system status.• Front plate Standard Supply is Brushed Stainless Steel (plates can becustomised to client requirements, e.g. brass or anodised aluminium.)32
System PerformanceNatural Ventilation UnitPressure DropAlthough pressure/volume graphs are providedfor individual components the information hereprovides pressure loss details for a completenatural ventilation assembly.Data based on Model Type A for all standardsizes.119876543Face Velocity m/s2 3 4 5 6 7 8 9 12 3 4 5 6 7 8 9 11987654322ExamplePressure (Pa)19876543219876543219876519876544332212 3 4 5 6 7 8 92 3 4 5 6 7 8 90.1 1.0 101ExampleUnit Size1300 x 6001300 x 4001300 x 200800 x 600800 x 400800 x 200300 x 600300 x 400300 x 200EffectiveArea m 20.780.520.260.480.320.160.180.120.06Volume @0.3 m/seffectivefacevelocity0.2340.1580.0780.1440.0960.0480.0530.0360.018Pressuredrop (Pa)1.61.61.61.61.61.61.61.61.6Ce1.181.181.181.181.181.181.181.181.18Alternative effective face velocities can be selected from the graph withrevised pressure detailsFor the sizing of all unit types when incorporated into buildingdesigns please refer to Gilberts selection software program33
Page 1 and 2: NATURAL VENTILATION SYSTEMThe Compl
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Page 6 and 7: Mistrale NaturalVentilationOur Mist
Page 8 and 9: Mistrale NaturalVentilationMistrale
Page 10 and 11: Mistrale NaturalVentilationModel EE
Page 12 and 13: Mistrale Natural VentilationCompone
Page 14 and 15: Intake LouvresGilberts Natural Vent
Page 16 and 17: Volume Control DamperControllabilit
Page 19 and 20: Heat output against temperature dif
Page 21 and 22: Roof Top Penthouse LouvreThe Gilber
Page 23 and 24: Type 2 - Exhaust Turret Terminal wi
Page 25 and 26: Airflow DiagramsIntake or Exhaust T
Page 27 and 28: 27UnitVNT/1VNT/2PressureDrop@1m/s0.
Page 29 and 30: Acoustic InformationExtensive acous
Page 31: Control StrategyThe system maintain
Page 35 and 36: Ordering SpecificationPenthouse Ter

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