Samsung MCU Series, Installation Manual, Page: 21 / 28

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• The Direct-connected indoor unit without MCU like below picture, be sure to set their options to
"Cooling only unit setting“ and then connect them to a low pressure gas pipe and a liquid pipe. This
indoor unit only operate to cooling mode.
MCU
Set to Cooling Only Unit
1. Check whether power is supplied or not.
- When the indoor unit is not plugged in, there should be additional power supply in the indoor unit.
2. The panel(display) should be connected to an indoor unit to receive option.
3. Enter mode to set option (
࢜
Detail method of entering option mode refer to indoor unit installation manual)
4. Set the 05 series installation option at SEG3 to '2' like this '050200 - 100000 - 20000 - 30000'.
(The default setting of an indoor unit 05 series installation is '050000 - 100000 - 20000 - 30000')
• When setting the "Cooling only unit" option, be sure to set the SEG 9 (Hot water heater) of 02 Series installation to "0".
• When "Cooling only unit" option is set, heating operation is not performed when the controller (wireless remote
controller, central controller) is set to the heating mode.
• En cas de réglage de l'unité sur le mode refroidissement exclusif, veillez à régler le SEG 9 (chauffe-eau) de la série
02 sur 0 lors de l'installation.
• Lorsque l'option de refroidissement uniquement est sélectionnée pour l'unité, aucun fonctionnement en mode
chauffage n'est possible lorsque le contrôleur (de la télécommande sans fil ou central) est réglé sur le mode
chauffage.
Option No. : 05XXXX-1XXXXX-2XXXXX-3XXXXX
Option SEG1 SEG2 SEG3 SEG4 SEG5 SEG6
Explanation PAGE MODE
Use of Auto Change Over
for HR only in Auto mode /
Cooling only unit setting
(When setting
SEG3)
Standard heating
temp. Offset
(When setting
SEG3)
Standard cooling
temp. Offset
(When setting SEG3)
Standard
for mode change
Heating
→
Cooling
Remote
Controller
Display
Indication
and
Details
Indication Details Indication Details Indication Details Indication Details Indication Details Indication Details
0 5
0
Follow product
option
0 0 0 0 0 1
1
Use Auto Change
Over for HR only
1 0.5 1 0.5 1 1.5
2 1 2 1 2 2
3 1.5 3 1.5 3 2.5
2
Cooling only unit
setting
4 2 4 2 4 3
5 2.5 5 2.5 5 3.5
6 3 6 3 6 4
7 3.5 7 3.5 7 4.5
Direct-connected indoor unit without MCU
(Connecting Only Low Pressure Gas Pipe / Liquid Pipe)