Heat Exchange Ventilation Heat Exchange Ventilation
The principle increase or decrease humidity ventilation without loss of heat recovery of thermal energy potential to reduce air conditioning system requirements Heat Exchange Ventilation
Heat Exchange Ventilation Fresh air ventilation increasingly required on internal rooms without window access 23ºC 18ºC 0ºC Example: Heating Mode Helps prevent “sick building syndrome” Reclaims 20-50% of the energy lost by ventilation Improves energy efficiency, especially during hot and cold seasons
Heat Exchange Ventilation Five models VN-250SE VN-350SE VN-500SE VN-800SE VN-1KSAE
Heat Exchange Ventilation Heat exchange Normal Air volume (m 3 /h) Input power (w) Low High Extra high Low High Extra high External static (pa) Noise level (dB) Temperature exchange efficiency(%) Ventilation Mode VN-250SE Fan speeds
Heat Exchange Ventilation Heat exchange Normal Air volume (m 3 /h) Input power (w) Low High Extra high Low High Extra high External static (pa) Noise level (dB) Temperature exchange efficiency(%) Ventilation Mode VN-350SE Fan speeds
Heat Exchange Ventilation Heat exchange Normal Air volume (m 3 /h) Input power (w) Low High Extra high Low High Extra high External static (pa) Noise level (dB) Temperature exchange efficiency(%) Ventilation Mode VN-500SE Fan speeds
Heat Exchange Ventilation Heat exchange Normal Air volume (m 3 /h) Input power (w) Low High Extra high Low High Extra high External static (pa) Noise level (dB) Temperature exchange efficiency(%) Ventilation Mode VN-800SE Fan speeds
Heat Exchange Ventilation Heat exchange Normal Air volume (m 3 /h) Input power (w) Low High Extra high Low High Extra high External static (pa) Noise level (dB) Temperature exchange efficiency(%) Ventilation Mode VN-1KSAE Fan speeds
Heat Exchange Ventilation Supply air Heat exchanger element Return air Control pcb
Heat Exchange Ventilation Exhaust air Heat exchanger element Outside air
Heat Exchange Ventilation Removable, washable air filters
Heat Exchange Ventilation Heat exchanger element (removed for cleaning) Heat exchanger element access door Heat exchanger element
Heat Exchange Ventilation Operation switch 230v 50Hz power supply Airflow switch (low) Airflow switch (high) Damper changeover switch Electrical connections
Heat Exchange Ventilation Fan speed connections CN8 + CN6 = high speed CN7 + CN5 = extra high speed
Heat Exchange Ventilation Operating conditions Outdoor air Minimum -10 o C Maximum +40 o C Maximum RH 85% or less Indoor air Minimum -10 o C Maximum +40 o C Maximum RH 85% or less
Heat Exchange Ventilation Installation Power supply 230 vac 50Hz 1 ph & ground Supply cables 1.5mm 2 Standards Installation should comply with all national and local electrical codes & standards as required Isolation The power supply should be Isolated and the unit protected with the correctly sized isolator and mcb
Heat Exchange Ventilation Installation The unit is fitted with four support brackets which must be used for fixing the unit. It is recommended that the unit is fixed using 10mm or 12mm diameter drop rods Ensure that adequate service access is provided for filter and heat exchanger element removal
Heat Exchange Ventilation Ductwork connections (supply and return) VN 250SE150mm diameter VN 350SE150mm diameter VN 1KSAE250mm diameter VN 800SE250mm diameter VN 500SE200mm diameter All external ductwork must be insulated to prevent condensation All external ductwork joints must be taped to prevent air leakage
Start up Heat exchanger operationCheck damper position is correct (towards control box) Ventilation operationCheck damper position is correct (away from control box) Air flow switchCheck fans operate in high and low speeds during both heat exchanger and ventilation modes Heat Exchange Ventilation
Heat Exchange Ventilation Heat Exchange Ventilation