Cold Weather Area Operation Specifications - Mitsubishi Electric Lossnay LGH-100RX3-CAN Technical Manual

( °C )
T
OA
50
45
40
35
30
25
20
15
10
5
0
5 10 15
( a ) When there is no target temperature
( °C )
T
OA
50
45
40
35
Free Heating
30
25
20
10°C
15
10
5
8°C
0
5 10 15
( c ) When there is a target temperature ( Heating )
Lossnay ventilation
By-pass ventilation
Comfortzone ( Maintains the condition
held prior to entering the range. )
T : Outdoor air temperature
OA
T : Indoor air temperature
RA
The indoor air and outdoor air temperature are detected by the two temperature sensors (thermistors) built into the main Lossnay unit.
10. Cold Weather Area Operation
Specifications
When the OA temperature falls below -10°C during operation, the SA fan will change to intermittent operation, off for 10 min-
utes, on for 60 minutes. However, intermittent operation can not take place for 60 minutes after starting operation.
During cold weather, the pre-heat unit is required if the OA temperature falls below -15°C Set up the pre-heat unit as seen in the
system example on the next page.
T = T
OA RA
4deg
20 25 30 35 40
24°C
T = T
OA RA
4deg
2deg
Free cooling
4deg
4deg
6deg
20 25 30 35 40
Target temperature
( °C )
T
OA
50
45
40
35
30
25
20
15
10°C
10
5
8°C
0
( °C )
45 50 5
T
RA
( b ) When there is no target temperature and the outside
temperature has been 28°C or higher in the last 24 hours.
( °C )
T
OA
50
45
40
35
30
25
20
15
10°C
10
5
8°C
0
( °C )
5
45 50
T
RA
( d ) When there is a target temperature ( Cooling )
Or the outside temperature has been 28°C or higher in the last
24 hours when interlocked with Mr.Slim and Mr.Slim in
ventilation mode.
T = T
OA
4deg
4deg
10 15 20 24 25 30
T = T
OA
4deg
2deg
10 15 20 25 30
Target temperature
RA
( °C )
35 40 45 50
T
RA
RA
( °C )
35 40 45 50
T
RA
143