19
2
Ventilation
mode control
(continued)
2. Air to Air Heat Exchanger system linked with air conditioners
1) Automatic ventilation mode control in the air-conditioning linkage
• Determine the mode from the operation mode of the air conditioner.
[Cooling zone]: The air conditioner operation mode is Automatic cooling,
Cooling, or Drying mode.
[Heating zone]: The air conditioner operation mode is Automatic heating or
Heating mode.
In Fan mode, the zone is determined by the automatic ventilation mode control
in the Air to Air Heat Exchanger system.
• The setting of the automatic ventilation control in the Air to Air Heat Exchanger
system linked with air conditioners can be changed with CODE No. (DN) [EC]
of the DN setting.
0000: Valid only when the air conditioner is running (factory default). When the
air conditioner is stopped, the zone is determined by the automatic
ventilation mode control of the Air to Air Heat Exchanger system.
0001: Valid even if the air conditioner is stopped. If the air conditioner is
stopped, the zone is determined by the operation mode and set
temperature before stop.
0002: Invalid. The zone is determined by the automatic ventilation mode
control in the Air to Air Heat Exchanger system.
2) The Bypass condition at the time of automatic ventilation mode control in the Air
to Air Heat Exchanger system linked with air conditioners (excluding Fan mode)
[Cooling zone]
RA OA + 3°C and RA set tempe 2°C and OA RA/10°C + 14.5°C
and RA 20°C
[Heating zone]
OA RA + 3°C and RA set temperature - 2°C and OA RA/10°C + 14.5°C
and RA 27°C
• Condition for returning to Heat Exchange (determined by the set temperature
before stop, even when the air conditioner is stopped)
(For details, see the section “Cold Mode Control.”)
[Cooling zone] RA set temperature - 2°C or RA 18°C
[Heating zone] RA set tempe 2°C or RA 29°C
• If the system is in an undefined zone when operation starts, the system is
operated in Heat exchange mode. If the state moves to this zone during
operation, the previous state is retained.
NO.
Item
Specification outline
Remarks
4
8
12
16
20
24
28
32
8
12
16
20
24
28
32
Automatic ventilation mode control in the Air to Air Heat
Exchanger system linked with air conditioners
Cooling zone
Heat Exchange
Bypass
Undefined
zone
OA:
Outdoo
r Air (
°C
)
RA: Return Air (°C)
Minimum set
temperature
Summary of Contents for VN-M1000HE
Page 150: ......
