Low Noise Mode - Mitsubishi Electric Ecodan HUS210FTC4ST Installation Manual

Low Noise Mode

11
To activate low noise mode an optional 3 wire adaptor is required (PAC-SC36NA). This can either be wired into a
manual switch or a timed version. The level of low noise mode which will be activated (as shown in the relevant
graphs below and over the page) is determined by the combination of DIP switch settings (SW5-1 and SW5-2) on
the outdoor unit as shown below. As low noise mode reduces maximum capacity it is important that the capacity at
the low noise mode selected is sufficient to overcome the building's calculated heat losses.
SW5 1 Max. fan step
selection
2 Max. frequency
selection
3 No Function
4 No Function
PUHZ-W50VHA BS Noise Curve
FTC4 Installation Manual
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STEP 9 STEP 9
Middle Level Low Level
Do NOT use PUHZ-W50,85VHA
Do NOT use PUHZ-W50,85VHA
OFF Selection of max. fan step
at the silent mode
OFF Selection of compressor
frequency at the silent mode
OFF -
OFF -
Always
Always
-
-