Economizer (Optional); Control Logic - Samsung MCM-D211UN Installation Manual

Installing a Universal Comm. Kit

Economizer (optional)

1. Function
Purpose
temperature is low.
temperature.
How to work
signal
not activated.
• When the contact for free cooling is shorted, free cooling is enabled. When the contact is open,
free cooling is not available.
NOTE
•

2. Control Logic

Cooling ON
22
Yes
Thermo ON?
No
Thermo OFF
Yes
connected?
No
Thermo ON
Yes
Is free cooling
activated?
(Free cooling start)
No
Thermo ON
Thermo OFF