3. System
(1-2) Auto step mode
& Supply air temp. control
*4
15
Exhaust Air
(E.A.)
Outdoor Air
(O.A.)
3
(1-3) Auto step mode
& Return/ Room air temp. control
*6
15
Exhaust Air
(E.A.)
Outdoor Air
(O.A.)
3
14
13
12
8
7
2
1
<Fig. 3.1.2>
13
14
12
8
Return Air
7
2
1
<Fig. 3.1.3>
*4. Auto step mode:
• In this mode, the capacity step of the outdoor unit is con-
trolled automatically to let the target temperature reach the
set temperature.
Return Air
Note
(R.A.)
• Auto change over function between cooling and heating
mode is NOT available in this system.
• Keep operation range shown at the following section 3.3.
10
• Standard setting of DIP SW3-4 and SW3-5 is 3°C
(SW3-4 : ON , SW3-5 : OFF).
6
(Refer to "4.1.7 Switch setting".)
4
Supply Air
(S.A.)
No.
1
2
5
3
4
5
6
9
7
8
9
10
11
12
13
14
15
*5. If outdoor unit is SHW series, It's not needed to install
*6. Auto step mode:
*7
• In this mode, the capacity step of the outdoor unit is con-
trolled automatically to let the target temperature reach the
set temperature.
*7. Return/Room air temp. control:
• Set the DIP SW 1-7 to ON.
Note
4
(R.A.)
• Auto change over function between cooling and heating
mode is available ONLY when this system is selected and
the input selection of capacity setting (DIP SW1 and SW6)
10
is "No input (Auto step mode)".
• Keep operation range shown at the following section 3.3.
6
No.
1
2
Supply Air
3
(S.A.)
4
5
5
6
7
8
9
9
10
11
12
13
14
15
*8. If outdoor unit is SHW series, It's not needed to install this
Part name
Interface unit
Remote controller
Outdoor unit
Target air temp. thermistor (TH1)
Ref. liquid temp. thermistor (TH2)
2-Phase temp. thermistor (TH5)
HEX inlet (Coil on) temp. thermistor (TH11)
Air-Handling Unit (AHU) (Local supply)
AHU local controller (Local supply)
Heat exchanger of AHU (Local supply)
Target air temp. thermistor (Local supply)
Louver (Local supply)
Air filter (Local supply)
Heat recovery (Local supply)
Fan (Local supply)
this thermistor, and set the DIP SW 1-5 to ON.
Part name
Interface unit
Remote controller
Outdoor unit
Target air temp. thermistor (TH1)
Ref. liquid temp. thermistor (TH2)
2-Phase temp. thermistor (TH5)
HEX inlet (Coil on) temp. thermistor (TH11)
Air-Handling Unit (AHU) (Local supply)
AHU local controller (Local supply)
Heat exchanger of AHU (Local supply)
Target air temp. thermistor (Local supply)
Louver (Local supply)
Air filter (Local supply)
Heat recovery (Local supply)
Fan (Local supply)
thermistor, and set the DIP SW 1-5 to ON.
System (1-2)
*5
─
System (1-3)
*8
─
5