• Heat reclaim ventilation • VAM-FA/FB
1
9
• Ventilation • Heat reclaim ventilation
26
9
Wiring diagrams
9 - 1 Wiring Diagrams - Single Phase
VAM1500-2000FB
NOTES
1
In case you use the central remote control, connect it to the unit in accordance with the attached manual.
2
When connecting the input wires from outside, fresh-up or on/off control operation can be selected. (Contact with a minimum applicable load of 12V DC, 1mA)
3
For details of connection see the attached manual of the option kit.
4
SS1 (A1P) has already been set to “nor.” at factory set. The unit will not run if the setting is changed.
1 Do not open the EL. Compo. box cover for 10 minutes
after the power supply is turned off.
2 After opening the EL. Compo. box, measure the points
shown at the right with a tester and confirm that the
voltage of the capacitor in the main circuit is less than
DC50V
A1P
Printed circuit board
M4F
Motor (Supply air fan) (Top)
V1R
Diode bridge
A2P - A4P Printed circuit board assy (Fan)
M1D,M2D Motor (Damper)
Z1F
Noise fi lter
A5P
Printed circuit board assy (Fan)
PS
Switching power supply (A1P)
REMOTE CONTROL
C1
Capacitor (M1F)
Q1DI,
Q2DI
Field earth leak detector
(Max. 300 mA)
SS1
Selector switch
F1U
Fuse T, 6.3A 250V (A1P)
CONNECTOR FOR OPTION (See note 3)
F3U
Fuse T, 5A, 250V (A1P)
R1T
Thermistor (Indoor air)
X14A
Connector (CO
2
sensor)
HAP
Pilot lamp (Service monitor - green)
R2T
Thermistor (Outdoor air)
X24A
Connector (Outside damper)
K1R
Magnetic relay
R3T
Thermistor (PTC)
X26A
Connector (Filter sign)
K2R, K5R Magnetic relay
S1C, S2C Limit switch damper motor
X33A
Connector (Contact PCB)
L1R - L4R Reactor
X1M
Terminal (A1P)
X35A
Connector (Appendices PCB)
M1F
Motor (Exhaust air fan) (Bottom)
X2M
Terminal (Outside input) (A1P)
X41A
Connector (Humidity sensor 1)
M2F
Motor (Supply air fan) (Bottom)
X3M
Terminal (Power supply)
X42A
Connector (Humidity sensor 2)
M3F
Motor (Exhaust air fan) (Top)
: Live
: Connection
Colors:
Black
White
: Neutral
: Relay connector
Blue
Yellow
: Field wiring
: Protective earth (screw)
Orange
Green
: Terminal strip
: Noiseless earth
Red
: Connector
See note 1
Control box
Wired remote control
(opt. accessory)
Indoor
220-240V/220V
~
50/60Hz
Measuring
points for
voltage
Caution when performing service inside the EL. Compo. box
WARNING
Caution for ELECTRIC SHOCK
2D080684A
Printed circuit board