Samsung Electronics 240
Piping Diagram
Auto Change Over
ƒ Purpose
Automatically turn on heating or cooling mode according to the indoor temperature when using auto mode on HR model
units.
ƒ Concept
- How to turn on the mode :
Select Auto Changeover
- Heating or cooling mode automatically turns on after comparing the indoor temperature (Tr) with the set temperature
(Ts). It is possible to adjust the Auto Changeover condition according to the value of installation option 2.
ƒ Control specifications in detail
1. Initial operation mode determination
If Tr ≥ Ts - A + 1 K If Tr < Ts – A + 1 K
Auto Cooling Auto Heating
2. Mode change
Cooling ױ Heating Heating ױ Cooling
Thermo off for T & T
r < Ts - D Thermo off for T & Tr ≥ Ts + C
3. Thermo On/Off
In cooling mode In heating mode
Thermo on : Tr ≥ Ts + B + 1 K
Thermo off : Tr < Ts + B – 1 K
Thermo on : Tr < T
s - A – 1 K
Thermo off : Tr ≥ Ts - A + 1 K
- Install Option 2 value
Symbol Function 0 1 2 3 4 5 6 7
A Offset the set heating temp 0 0.5 1 1.5 2 2.5 3 3.5
B Offset the set cooling temp 0 0.5 1 1.5 2
2.5 3 3.5
C Change the mode (heat ױ cool) 1 1.5 2 2.5 3 3.5 4 4.5
D Change the mode (cool ױ heat) 1 1.5 2 2.5 3 3.5 4 4.5
T T time 5 7 9 11 13 15 20 30
7-3 Functions (cont.)
7-3-2-6 Indoor unit control (cont.)
7-3-2 Control (cont.)
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