Mitsubishi Electric PAC-IF013B-E Installation Manual page 5

3 System
3.2 System configuration
(Intelligent multiple outdoor unit control *1 )
(2-1) Manual step mode (example)
15
Exhaust Air
(E.A.)
Outdoor Air
(O.A.)
3(Ref. adress: 0)
3(Ref. adress: 1)
3.3 Operation range
(1) Operation range
Make sure to keep operation range shown at the table below.
Operation range Outdoor temperature
Coil on temperature
(2) Set temperature range in Auto step mode
Set temperature range in Supply air control
*1
Auto step mode
Return/Room air
temperature control
Auto cooling/heating
Note
*1. When potential of the DX coil does not match the capacity of outdoor unit, the air temperature may not reach the set temperature or there may be ON-OFF cycle.
Design the DX coil to match the capacity of outdoor unit. (As for capacity of outdoor unit, refer to "6.2 Standard conditions".)
*2. This function is available ONLY when capacity setting (DIP SW1 and SW6) is "No input (Auto step mode)" and return/room air temp. control is selected (DIP SW
1-7 is ON).
14 13
12
8
Return Air
7
Supply Air
1(Main)
1(Sub)
2
<Fig. 3.2.1>
Cooling
Heating
Cooling
Heating Number of outdoor unit: 1
Number of outdoor unit: 2 or more
Cooling
Heating
Cooling
Heating
*2
*1. Interface system receives step request signal correspond to
total capacity of outdoor units, and calculates necessary
capacity for each outdoor unit automatically.
Note
• This intelligent multiple outdoor unit control function is available
only when Manual step mode is selected.
(R.A.)
• Up to 6 outdoor units can be connected.
• 2 different type of outdoor units (capacity and/or series) can be
mixed,but connecting the same capacity outdoor units is highly
10
recommended.
6
• Ref. address setting on each outdoor unit is needed.
11
• Interface unit which connects to the Ref. address 0 outdoor unit,
becomes main interface unit.
• Connect AHU local controller (Part No. 9) to the main interface
unit.
(S.A.)
• Connect ONE remote controller (Part No. 2) to the interface unit.
• Connect between the interface units with a remote controller (dai-
sy chain). MAX. : 500m
5
No.
1 Interface unit
2 Remote controller
3 Outdoor unit
9
4 Target air temp. thermistor (TH1)
5 Ref. liquid temp. thermistor (TH2)
6 2-Phase temp. thermistor (TH5)
7 HEX inlet (Coil on) temp. thermistor (TH11)
8 Air-Handling Unit (AHU) (Local supply)
9 AHU local controller (Local supply)
10 Direct expansion (DX) coil (Local supply)
11 Target air temp. thermistor (Local supply)
12 Louver (Local supply)
13 Air filter (Local supply)
14 Heat recovery (Local supply)
15 Fan (Local supply)
*2. If outdoor unit is PUHZ-SHW model, it's not needed to install
this thermistor.
Depend on outdoor unit
Depend on outdoor unit
Part name
15 - 32°C
0 - 28°C
5 - 28°C
12 - 30°C
17 - 28°C
19 - 30°C
17 - 28°C
19 - 28°C
System (2-1)
─
*2
5