21
Installation Pr
oc
edur
e
English
Nominal cross-
sectional size
Nominal
diameter of
thread
B
D
d1
E
F
L
d2
t
Basic
size Tolerance
Basic
size Tolerance
Basic
size Tolerance Min. Min. Max.
Basic
size Tolerance Min.
1.5
4
6.6
±0.2
3.4
+0.3
-0.2
1.7
±0.2
4.1
6
16
4.3
+0.2
0
0.7
4
8
2.5
4
6.6
±0.2
4.2
+0.3
-0.2
2.3
±0.2
6
6
17.5
4.3
+0.2
0
0.8
4
8.5
4
4
9.5
±0.2
5.6
+0.3
-0.2
3.4
±0.2
6
5
20
4.3
+0.2
0
0.9
CAUTION
• The circuit diagram given above shows only wiring
schematic, and the details of the actual installation
are not presented.
• 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.
• Never branch the terminal block power supply cable
from one fan coil unit to two fan coil units.
• When peeling the power cable, use a special tool for
it to prevent damage to the inner sheaths.
• Make sure that more than 20 mm of the outer sheaths
of the fan coil unit’s power and communication cables
are inserted inside the electrical part.
• Separate each communication cable from the power
cable and other communication cables.
• When wiring, make sure that the connecting wire is
loosened properly.
2
Selecting the crimping terminal lug
• Select the crimping terminal lug based on the
nominal cross-sectional size of the power cable.
• Cover the connection part of the power cable and
the crimping terminal lug to insulate it.
Silver solder
3
Specifications of the terminal blocks
(Unit: mm)
AC power: M4 screw
Communication: M3.5 screwELB
11
13
18
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)
DB68-11289A-01_IM_DVM FCU WindFree 4way_EU_EN_.indb 21
2022-04-26 오전 8:55:20