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SiBE121135
Indoor Unit Control (RA Models)
Function and Control
83
1.6
RADIANT Operation
Outline
Floor Standing Type: FVXG Series
The RADIANT operation has 2 operation modes.
RADIANT 1: RADIANT operation with heating
RADIANT 2: RADIANT operation only
1.6.1 Indoor Electronic Expansion Valve (Motor Operated Valve) Control
Initializing with
Power ON
The indoor electronic expansion valve is initialized when turning on the power.
Opening Limit
Control
Opening limit control limits the opening of the indoor electronic expansion valve in order to keep
a specified range during RADIANT operation.
Starting
Operation
Control
Starting operation control opens the indoor electronic expansion valve to a certain degree when
starting RADIANT operation. The indoor electronic expansion valve is kept open for a certain
period.
Target Panel
Temperature
Control
When the starting operation control finishes, the target panel temperature control starts and
adjusts the opening of the indoor electronic expansion valve to achieve the target panel
temperature. The panel temperature is categorized into stop, dropping, keep, up, and return
zones.
(The target panel temperature is 55°C at maximum but it may be lower depending on the
condition.)
Operation Stop
Control
In case operation stops during RADIANT operation (including thermostat off)
In case any of the following events occur while the indoor electronic expansion valve is open,
the operation stop control makes the indoor electronic expansion valve close completely.
Operation ON
→
OFF
RADIANT 1 or RADIANT 2 is canceled.
Thermostat off
Defrost control
Stop zone
Operation stops, the radiant panel temperature control is carried out.
Dropping zone
The opening of indoor electronic expansion valve decreases.
Keep zone
The opening of indoor electronic expansion valve is kept.
Up zone
The opening of indoor electronic expansion valve increases.
Return zone
Starting operation control is carried out.
Radiant panel temperature
45˚C
Up zone / return zone from stop
Up zone
51˚C
Stop zone
70˚C
Dropping zone
55˚C
Keep zone
53˚C
(R14636)
Содержание Super Multi NX 3MKS50E3V1B
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