Mitsubishi Electric PAC-IF051B-E Installation Manual page 66

. Multiple outdoor units control
Wiring specification and field supply parts
Model and specifications
Item Name
External Outputs Use sheathed vinyl coated cord or cable.
output wire Max. 30 m
function Wire type: CV, CVS or equivalent
Wire size: Stranded wire 0.5 mm² to 1.25 mm²
Solid wire: ø0.65 mm to ø1.2 mm
Note: Do not connect multiple water circulation pumps directly to each output (OUT1). In such a case, connect them via (a) relay(s).
PAC-SIF051B-E
CN108
FTC4 (Slave)
LED4
SW2
SW4
1
1
6
8
SW1
1
LED3
8
CNW12 CN21
(RED) (YLW)
TBIN 2 4
1 2 3 4 1 3
1 4 1 3
TBOUT
<Fig. ..3>
Signal inputs
Name Terminal block Connector
RC TBIN 1-2 —
IN2 TBIN 3-4 CN2F
Wiring specification and field supply parts
Model and specifications
Item Name
Signal input Signal input wire Use sheathed vinyl coated cord or cable.
function Max. 10 m
Wire type: CV, CVS or equivalent
Wire size: Stranded wire 0.5 mm² to 1.25 mm²
Switch Non-voltage "a" contact signals
Remote switch: minimum applicable load 12V DC, 1mA
Thermistor inputs
Name Terminal block Connector
TH2 — CN21
THW1 — CNW12 1-2 Thermistor (Flow water temp.)
THW2 — CNW12 3-4 Thermistor (Return water temp.)
Note:
Do not splice the wiring to extend or shorten it, or this could affect correct monitoring of each temperature.
If the wiring is too long, bundle it with a strap to adjust the length.
Output
Name Terminal block Connector Item
OUT1 TBOUT 1-2 —
N L
1 2 3 4
TBOUT
OUT1
<Fig. ..4>
Wiring specification and field supply parts
Model and specifications
Item Name
External Outputs Use sheathed vinyl coated cord or cable.
output wire Max. 30 m
function Wire type: CV, CVS or equivalent
Wire size: Stranded wire 0.5 mm² to 1.25 mm²
Solid wire: ø0.65 mm to ø1.2 mm
Note: Do not connect multiple water circulation pumps directly to each output (OUT1). In such a case, connect them via (a) relay(s).

LED1
CNS2
(RED)
S1 S2 S3
3 1
L N
TB6
Item
Communication cable between indoor units
Flow switch input
Solid wire: ø0.65 mm to ø1.2 mm
Item
Thermistor (Ref. liquid temp.)
Water circulation pump 1 output
OFF (Open) OFF (Short)
— —
Refer to SW2-2 in <9.6 Dip Switch Functions>.
Optional part model
—
—
—
Signal/Max current
OFF ON
OFF ON 230V AC 1.0 A Max