Installation/Use/Maintenance Instructions
Fan coil units VFC, installation in sills
E
LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA
VFC_USA_BA (07/19)
Phone 864 599-6340, Fax -6344 · e-mail: [email protected] · Internet: www.LTG-INC.net
Former editions are invalid · Subject to technical modifications
page 28 of 19
Continuation 4.9.1 Electrical connection
Speed control wiring diagram for 5-speed AC motor
Note: - Capacitor motor with 5 tappings.
- Multiple unit triggering possible (max. 4 units).
- The technical data contain details about the current consumption and the corresponding electrical power.
switch
1 2 3
L1
L1
S
Disconnector
on site
Po
w
e
r
su
pply
For a safe start of the fan
coil unit, it is necessary to
use speed III.
Use
te
rm
in
a
ls
1
...5
depen
d
in
g
o
n
th
e
sp
e
e
d
stag
e
S
p
eed
1
w
hi
te
sp
eed
2
red
sp
eed
3
g
re
y
sp
eed
4
o
ra
ng
e
sp
eed
5
b
la
ck
Co
n
n
e
ct
io
n
side
LT
G
ye
llo
w
br
o
w
n
C
a
p
a
ci
tor
ye
llo
w
-g
re
e
n
blue
1
2
3 4 5
1
2
3 4 5
6
7
C C
PE
N
L
L
PE PE
N N
Power supply 115 V-AC
Fuse 2A: slow-blow, on site,
can vary according to project
(see design data)
N
L
N
L
1 2 3 01
Speed control wiring diagram for EC motor 0…10 V
Two connections are necessary for electrically connecting
the fan convector. These are provided by plug connections,
protection IP 21. The plugs are preassembled on the motor
side at the factory. Only the supplied mating plugs have to
be assembled by others accordingly.
Note:
As a rule, we are not familiar with the full scope of
the ventilation, air-conditioning and control engineering
systems. For this reason, the designs, drawings and
circuit diagrams only show the systems that are relevant
to the basic functions. Other units or components, such as
those required for overall control engineering and/or de
sign in compliance with VDE regulations, are not shown
and are not explicitly mentioned. Please also note the as
sembly and installation instructions in the original docu
mentation. The controllers for this application are
parametrized by others.
N
L
N
L
1 2 3 4
Speed control 0…10 V-DC, plug 4-pin
115 V-AC main power supply - plug 3-pin
Circuit breaker
by others
N, L operating voltage 115 V-AC
0…10 V
+
-
1 = 0...10 V-DC (yellow),
speed, input
With control voltage U < 1 V
is speed n = 0
2 = GND, 0 V-DC (blue),
input
3 = Tacho signal (white),
output (optional)
4 = 10 V steady signal (red)
output (optional)
Fuse 4A slow-blow, on
site, can vary according to
project, see design data
