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Operation
Installer and user reference guide
28
R R8T7V1B
VRV IV heat pump for indoor installation
4P499898-1A – 2020.10
INFORMATION
▪
The heating capacity drops when the outside temperature falls. If this happens,
use another heating device together with the unit. (When using together with
appliances that produce open fire, ventilate the room constantly). Do not place
appliances that produce open fire in places exposed to the air flow from the unit
or under the unit.
▪
It takes some time to heat up the room from the time the unit is started since the
unit uses a hot-air circulating system to heat the entire room.
▪
If the hot air rises to the ceiling, leaving the area above the floor cold, we
recommend that you use the circulator (the indoor fan for circulating air).
Contact your dealer for details.
8.2.4 To operate the system (WITHOUT cool/heat changeover remote control switch)
1
Press the operation mode selector button on the user interface several times
and select the operation mode of your choice.
Cooling operation
Heating operation
Fan only operation
2
Press the ON/OFF button on the user interface.
Result:
The operation lamp lights up and the system starts operating.
8.2.5 To operate the system (WITH cool/heat changeover remote control switch)
Overview of the changeover remote control switch
a
b
a
FAN ONLY/AIR CONDITIONING SELECTOR
SWITCH
Set the switch to for fan only operation or to
for heating or cooling operation.
b
COOL/HEAT CHANGEOVER SWITCH
Set the switch to for cooling or to for
heating
Note:
In case a cool/heat changeover remote control switch is used, the position of
DIP switch 1 (DS1-1) on the main PCB needs to be switched to the ON position.
To start
1
Select operation mode with the cool/heat changeover switch as follows:
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