Daikin HXHD125A7V1B, Installation Manual

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Installation manual
20
HXHD125A7V1B
VRVIII system indoor unit
4PW62584-1A – 11.2010
8.4. Requirements
A power supply (see table below) must be provided for connection of
the unit. The power supply must be protected with the required safety
devices, i.e. a main switch, a slow blow fuse on each phase and an
earth leakage protector in accordance with applicable legislation.
Selection and sizing of the wiring should be done in accordance with
the applicable legislation based on the information mentioned in the
table below:
8.5. Routing
Take out the switchbox and put it in front of the unit and open the
switchbox cover. Refer to
"7.1. Selecting an installation location" on
page 10 .
Route the wires into the unit as follows:
To avoid electric noise problems, be sure that cables are put in the
correct bundle as mentioned on the figure.
Be sure to fix the cable with cable ties to the cable tie mountings to
ensure strain relief and to make sure that it does not come in contact
with the piping and sharp edges.
Item
Cable
bundle Description
Required number
of conductors
Maximum
running
current
In case of normal kWh rate power supply installation
1 PS Normal kWh rate power supply 2+GND
(a)
(a) Refer to the nameplate on the indoor unit
2 HV Multi tenant power supply
(b)
(b) Optional
2 1 A
In case of benefit kWh rate power supply installation
1 PS Normal kWh rate power supply 2+GND 1.25 A
2 PS Benefit kWh rate power supply 2+GND
(a)
–1.25 A
3 HV Multi tenant power supply
(b)
2 1 A
4 LV Transmission wiring (F1/F2) 2
(c)
(c) Minimum cable section 0.75 mm
2
.
5 LV Standard remote controller
(P1/P2) 2
(c)
6 LV Secondary remote controller
(P1/P2)
(b)
2
(c)
7 LV Domestic hot water tank
thermistor (R2T)
(b)
2
(d)
(d) This device and connection cable is delivered with the domestic hot water tank.
8 LV External room thermostat
signal ON/OFF
(b)
2 100 mA
(c)
9 LV Benefit kWh rate power supply
switch (S1S)
(b)
2 100 mA
(c)
10 LV Multiple set point signal 1
(b)
2 100 mA
(c)
11 LV Multiple set point signal 2
(b)
2 100 mA
(c)
12 HV 3-way valve (K1S)
(b)
3
(d)
13 HV Digital I/O PCB outputs
(b)
2 300 mA
(c)
PS = Power supply
LV = Low voltage
HV = High voltage
INFORMATION
When installing field supply or option cables, always make
sure that the switchbox is placed before the unit. This will
make it possible to remove the switchbox easily during
service.
NOTICE
Do not push or place redundant cable length in the unit.
PS
LV
HV
HV
LV
PS
LV
HV
PS
LV
HV+PS
LV HV
PS
LV PS HV