Field Settings SiUS041111226 Trial Operation and Field Settings4.4 Facility Setting Switch (cooling at low outdoortemperature)Outline This function is limited only for facilities with air conditioning targeted toward equipment. Never useit in a residence or office where the space is occupied by people.Detail You can expand the cooling operation range from 10°C (50°F: normal operation) to –15°C (5°F:cooling at low outdoor temperature setting) by turning on the switch (SW4-B) on the outdoor unitPCB. When the target fan speed determined by the control to maintain pressure difference remains under150 ~ 250 rpm (depending on the model) for about 30 seconds, the fan is turned off to maintain thepressure difference. When the pressure difference returns to high again, the fan starts to rotate again.09/12 class15/18/24 classCaution 1. If the outdoor unit is installed where the outdoor heat exchanger of the unit is exposed to directwind, provide a windbreak wall.2. Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and offwhen using facility settings.3. Do not place humidifiers or other items which might raise the humidity in rooms where facilitysettings are being used.A humidifier might cause condensate to drip or blow from the indoor unit outlet vent.4. Cutting jumper sets the indoor fan tap to the highest position.J5J4J3Top panelPCB2) Cut the jumper J3.1) Remove the3 screws.(R14694)J5J7J8J6GNDTop panelPCBShield plate3) Cut the jumper J6.2) Remove the shieldplate.1) Remove the3 screws.(R14695)
