6 Installation
Installer and user reference guide
16
VAM350~2000J7VEB
Heat reclaim ventilation unit
4P487293-1 – 2017.08
WARNING
▪ After finishing the electrical work, confirm that each
electrical component and terminal inside the electrical
components box is connected securely.
▪ Make sure all covers are closed before starting up the
unit.
NOTICE
If the power supply has a missing or wrong N-phase,
equipment will break down.
NOTICE
Do NOT install a phase advancing capacitor, because this
unit is equipped with an inverter. A phase advancing
capacitor will reduce performance and may cause
accidents.
6.5.2
Opening the switch box
CAUTION
Before opening the cover, be sure to turn off the power
switches of the main units and other devices connected to
the main units.
▪ Remove the screw that secures the cover and open the
switch box.
▪ Secure the power supply control wires with the clamp,
as shown in the figures.
VAM350~650
X33A
a
X14A
J3 J2 J1JC F2F1P2P1
X35A
X24A
X29A
C-
C+
b
b
k
d+e
l
i
f
j
o
o
h
g
r
m
p
n
m
a
l
m
j
i
b
b
k
d+e
c
n
h
o
i
l
q
q
q
r
a
Switch box
b
Printed circuit board
c
Switch box cover
d
Securing screw and washer
e
Grounding terminal
f
Terminal board
g
Transmission wiring terminal board (P1, P2, F1, F2)
h
Transmission wiring (to optional user interface)
i
Power supply cable
j
Wires for connection of additional external damper
(supplied accessory)
k
Insulated splices-closed barrel connector (0.75 mm²) (field
supply)
l
Double or reinforced insulated flexible cable (0.75 mm²) to
external damper (field supply)
m
Tie wrap (field supply)
n
BRP4A50A (optional accessory)
o
KRP2A51 (optional accessory)
p
CO
₂
sensor (optional accessory)
q
Tapping screw
r
Wires for fresh-up operation
