VRF Indoor Units 3 Unit Placement 3.1 Placement Considerations Unit placement should take account of the following considerations: § Units should not be installed in the following locations: Where exposure to direct radiation from a high-temperature heat source or to interference from a source of electromagnetic radiation may occur.
VRF Indoor Units Notes for installers and service engineers 1. The distance between the indoor unit and the roof (B) shall be greater than 50mm to install the air duct. 2. The motor and fan can be maintained from the indoor unit top or the air outlet. If maintenance is performed from the indoor unit top, the distance between the indoor unit and the roof must be larger than 600mm.
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VRF Indoor Units Legend Code Name Code Name XS XP connectors Inlet Air Temp. Sensor Steam pipe temperature sensor* Gas Pipe Temp. Sensor CS-SW Water level switch Fresh air inlet temperature sensor* Electronic expansion valve ALARM Alarm output Anion Sterilization module DC Fan motor Liquid Pipe Temp.
Sound pressure levels are measured 1.4m below the unit in an anechoic chamber. During in-situ operation, sound pressure levels may be higher as a result of ambient noise. 8.2 Octave Band Levels Figure 8.8: MIH200T1N18 (KPDUF-200 DN5.0) octave band levels Figure 8.9: MIH224T1N18 octave band levels NR-70 NR-70...
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VRF Indoor Units Figure 8.12: MIH335T1N18 octave band levels Figure 8.13: MIH400T1N18 (KPDUF-400 DN5.0) octave band levels NR-70 NR-60 NR-50 NR-70 NR-40 NR-60 NR-30 NR-50 NR-20 NR-40 NR-10 NR-30 NR-0 NR-20 NR-10 NR-0 31,5 63 125 250 500 1000 2000 4000 8000 31,5 63 125 250 500 1000 2000 4000 8000 Octave band center frequency (Hz)
√ Constant Airflow Notes: The above is only an example. If you choose other controllers, please refer to their instructions for setting. 9.2 Constant Airflow mode 9.2.1 Fan performance diagram Figure 9.7: MIH200T1N18 (KPDUF-200 DN5.0) Figure 9.9: MIH252T1N18 (KPDUF-252 DN5.0)
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VRF Indoor Units Figure 9.10: MIH280T1N18 (KPDUF-280 DN5.0) Figure 9.12: MIH400T1N18 (KPDUF-400 DN5.0) Figure 9.13: MIH450T1N18 (KPDUF-450 DN5.0) Figure 9.14: MIH560T1N18 (KPDUF-560 DN5.0) 9.2.2 How to Read the Diagram (Constant Airflow mode) The vertical axis is the External Static Pressure (Pa) while the horizontal axis represents the Air Flow (m /h).
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9.3 Constant Speed mode 9.3.1 Set external static pressure parameters ①In the main interface, press " " +" " for 3 seconds at the same time, and the main interface will display "CC". Press the "▲" and "▼" to select the indoor unit ("n00-n63" is displayed, and the last two digits are the indoor unit addresses).
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VRF Indoor Units 9.3.3 How to Read the Diagram (Constant Speed mode) The vertical axis is the External Static Pressure (Pa) while the horizontal axis represents the Air Flow (m /h). The characteristic curve for the “SH”, “M” and “SL” fan speed control. The Air Flow decreases with the increase of the external static pressure.
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