10. Installation
N
1-NO 2-NC
N
2-NO 2-NC
3
Specifications of the terminal blocks
(Unit: mm)
AC power:
M4 screw
Communication:
M3 screw
Communication:
M3.5 screwELB
11
13
18
6.62
7.62
10
7.5
9.0
13
.8
CAUTION
• When installing the product, be sure to install a 2-way
electric valve on the water inlet pipe.
When connecting a 2-way electric value, be sure to
check the correct sub PBA terminals as shown in the
figure below.
Incorrect terminal connection may cause product
malfunction. (Valve: Purchased at site)
– Specification: AC 220 to 240V (Operating current
must be 0.3A or less.)
– Applicable type: ON / OFF startup contact
• The standard specification is that the power supply for
the fan coil unit should be separate from that for a heat
source such as a chiller.
N
N
1-NO 1-NC
N
2-NO 2-NC
Wiring diagram when connecting a 2-way valve
2-Way valve1
(installed on site)
2-Way valve2
(installed on site)
N
N
1-NO 1-NC
N
2-NO 2-NC
Wiring diagram when connecting a 3-way valve
3-way valve1
(installed on site)
3-way valve2
(installed on site)
• In the 05 series installation options, the SEG15 and
SEG22 values define the valve signals, classified as
shown in the table below.
• SEG15 and SEG22 are set to 0 by default. After delivery,
connect N, NO, and NC terminals depending on the
valve specifications noting the table below:
Valve specification
Normal Close
Normal Open
PBA
terminal
N
Connect
Connect
NO
Connect
Do not connect
NC
Do not connect
Connect
