Daikin VAM150FC Installation Manual page 11

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
with the main units.
I
Remove the screw securing the cover and open the
switch box.
I
Secure the power cord control wires with the clamp,
as shown in the next figures.
1
2
3
4
5
6
X9A
7 8
12
13
13
1 Switch box
2 Terminal board
3 Grounding terminal
4 Control PCB
5 Power supply cable
6 BRP4A50A (optional accessory)
7
Double or reinforced insulated flexible cable (0.75 mm
external damper or heater (field supply)
8 KRP2A51 (optional accessory)
9 Transmission wiring to optional controller
10 Transmission wiring terminal board
11 Wiring for connection of additional damper or heater
12 Switch box cover
13 Securing screw
14
Insulated splices-closed barrel connector (0.75 mm
supply)
VAM150+250FC
Total Heat Exchanger
HRV (Heat Reclaim Ventilation)
4P586307-1 – 2019.06
10
P2 P1 F1F2
9 14
5 6 7
8
9
2
) to
2
) (field
Required electrical connections for possible additional field
supplied external damper
The external damper prevents the intake of outdoor air if the HRV is
switched off. (Refer to figure 2, item 19).
1. The HRV's main unit PCB operates the HRV and supplies power
for the external damper.
1 HRV main unit
2 External damper
3 Earth to external damper, if no class II construction
(EN60335-2-40)
Source voltage supply starts when HRV starts operating.
Source voltage supply is stopped when HRV is switched off.
Supply voltage
220 V
11
230 V
240 V
2. Required electrical connections
Connect one end of the accessory harness to the X1/X2
connector on the PCB and the other end to the harness leading
to the external damper via a insulated splices-closed barrel
connector (0.75 mm
Make sure that the wire is released from strain.
3. Required settings
• Mode No.: 18 (Group control) or 28 (Individual control)
• Setting switch No.: 3
• Setting position No.: 03
X1/X2
2
3
PCB
1
Connected load capacity
≤0.5 A
2
).
Installation manual
8