Mitsubishi Electric LGH-50RSDC-E1 Handbook page 15

(8) Function setting switches
SW1
Trial operation
Operation monitor output with delay function
Setting for exhaust fan in cold region operation mode
Ventilation priority mode during ventilation setting input on
Operation monitor output
Bypass auto ventilation priority setting
Automatic air volume increasing during bypass setting
Not to used
SW2
Decreasing exhaust fan power
Increasing exhaust fan power
Decreasing supply fan power
Increasing supply fan power
All switches are OFF at factory setting.
1 Trial operation (Refer to (6) (page 14).)
OFF ON
SW1 1 Normal operation
1 Trial operation
2 Operation monitor output with delay function (TM4
OFF ON
SW1 2 Not available
2 Available (Refer to (4) (page 13).)
3 Exhaust fan speed setting in cold region operation mode
(Refer to (1) (page 11).)
OFF ON
SW1 3 Not fixed
3 Exhaust fan : speed 5 fixed
4 Ventilation priority mode during ventilation setting input on
(Refer to (2) (page 11).)
OFF ON
SW1 4 Bypass ventilation mode fixed
4 Lossnay (Energy recovery) ventilation mode fixed
* Below 8°C, even SW1-4 is fixed any setting, ventilation mode should be Lossnay
(Energy recovery) ventilation.
5 Operation monitor output (TM4
OFF ON
SW1 5 Not available
5 Available (Refer to (3) (page 13).)
* During SW1-2 on, operation monitor output is prior to " 2 operation monitor output
with delay function".
6 Bypass automatic ventilation priority setting (Refer to (2)
(page 12).)
OFF ON
When outdoor temperature is 17°C or higher
6 within 24 hours, then bypass ventilation starts by
SW1 comparison OA and RA.
When outdoor temperature is 28°C or higher
6 within 24 hours, then bypass ventilation starts by
comparison OA and RA.
Operation
)
Operation
Operation
Operation
)
Operation
Operation
7 Automatic air volume increasing during bypass setting
OFF ON
7 Not increasing.
SW1
When unit is in bypass operation except power
7 bypass mode, the unit fan speed is automatically
increased 1 step.
8 Fan speed fine-tuning
ON OFF
2
1
or All supply air fan speeds are default settings.
2
1
Each of the supply air fan speed settings except
2
1
power bypass mode is increased.
Each of the supply air fan speed settings is
2
SW2
1
decreased.
4
3
or All exhaust fan speeds are default settings.
4
3
Each of the exhaust fan speed settings except
4
3 power bypass mode is increased.
Each of the exhaust fan speed settings is
4
3
decreased.
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Operation
Operation