Samsung IDH4400A Service Manual

Also see for DH44ZA1: Technical manual Owner's instructions

Contents

Samsung IDH4400A Service Manual Manual pdf 64 page image

7-1Samsung Electronics7. Schematic Diagrams7-1 Graph of air flow rate vs external static pressureHow to Read Diagram1. The vertical axis is the external static pressure(mmAq) while the horizontal axis represents the AIRFLOW(m3/min).2. The characteristic curves for ‘HH’, ‘H’, ‘Med’, and ‘Low’ fan speed controller are shown.3. The nameplate values are shown based on the ‘H’ air flow.4. If external static pressure is too great, the air flow volume may drop too low as explained above.HH : DIP Switch OFF position(High speed) H : At shipment(Normal speed)If external static pressure is too great(due to long extension of ducts, for example), the air flow volume may drop toolow at each air outlet. This problem can be solved by increasing the fan speed using the following procedure.1. Remove the screw on the electrical component box and remove the cover plate.2. Adjust the DIP switch(SW2) on the main PCB to the “OFF” position.Note: This air conditioner is tested under 14mmAq external static pressure.Note: If you increase the fan speed, you can use the air conditioner under the external static pressure of 20mmAq maximally.3. Re-install the cover plate and join the removed screw.(Without air filter)Air Flow (m3/min)252010155020 25 30 35 40 44LMHHHStatic pressure (mmAq)Switch No.5Switch PositionONOFFFunctionNormal speedHigh speedLimit lineLimit line(With air filter)Air Flow (m3/min)252010155020 25 30 35 40 44LMHHHStatic pressure (mmAq)Limit lineLimit line