Daikin EKHBH030BA, Руководство по установке

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EKHBH/X030BA
Indoor unit for air to water heat pump system
4PW62568-1 – 07.2010
Installation manual
17
Field wiring
Overview
The illustration below gives an overview of the required field wiring
between several parts of the installation. Refer also to "Typical
application examples" on page 4.
WARNING
■
A main switch or other means for disconnection,
having a contact separation in all poles, must be
incorporated in the fixed wiring in accordance with
relevant local laws and regulations.
■
Switch off the power supply before making any
connections.
■
Use only copper conductors.
■
Never squeeze bundled cables and make sure that it
does not come in contact with the piping and sharp
edges.
Make sure no external pressure is applied to the
terminal connections.
■
All field wiring and components must be installed by a
licensed electrician and must comply with relevant
local laws and regulations.
■
The field wiring must be carried out in accordance
with the wiring diagram supplied with the unit and the
instructions given below.
■
Be sure to use a dedicated power supply. Never use a
power supply shared by another appliance.
■
Be sure to establish an ground. Do not ground the unit
to a utility pipe, surge absorber, or telephone ground.
Incomplete ground may cause electrical shock.
■
Be sure to install an ground fault circuit interrupter
(30 mA) in accordance with relevant local laws and
regulations. Failure to do so may cause electrical
shock or fire.
■
Be sure to install the required fuses or circuit
breakers.
A Single power supply for
outdoor unit, backup
heater and booster
heater G 3-way valve for domestic
hot water tank (optional)
H 2-way valve for cooling
mode (field supply)
B Outdoor unit
C Bottom plate heater I Domestic hot water tank
(optional)
D Backup heater J Booster heater
(optional)
E Indoor unit
F Room thermostat
(optional) K User interface (digital
controller)
Item Description
Required
number of
conductors
Maximum
running current
1 Power supply cable for outdoor
unit 2+GND
(a)
(a) Refer to nameplate on outdoor unit.
2 Indoor unit power supply and
communication cable 3+GND
(b)
(b) Cable section AWG13 (2.5 mm
2
)
3 Power cable for bottom plate
heater 2
(c)
(c) Minimum cable section AWG18 (0.75 mm
2
)
4 Power supply cable for backup
heater 2+GND or
3+GND
(d)
(d) See table under "Connection of the backup heater power supply" on page 19.
5 Room thermostat cable 3 or 4 100 mA
(e)
(e) Minimum cable section AWG18 (0.75 mm
2
)
6 3-way valve control cable 2+GND 100 mA
(e)
7 2-way valve control cable 2+GND 100 mA
(e)
8 Booster heater power supply
and thermal protection cable 4+GND
(b)
9 Thermistor cable 2
(f)
(f) The thermistor and connection wire (39.4 ft)(12 m) are delivered with the
domestic hot water tank.
10 Booster heater power supply
cable 2+GND 13 A
11 Benefit kWh rate power supply
cable (voltage free contact) 2 (g)
(g) Cable section AWG18 till AWG16 (0.75~1.25 mm
2
), maximum length: 164 ft
(50 m).
Voltage free contact shall ensure the minimum applicable load of 15 V DC,
10 mA.
12 User interface cable 2
(h)
(h) Cable section AWG18 till AWG16 (0.75~1.25 mm
2
), maximum length: 1640 ft
(500 m).
CAUTION
Select all cables and wire sizes in accordance with
relevant local laws and regulations.
T
I
M
M
2
B
1 4
5
D
6
7
8
9
3
E
A 10 11
F
K
I
C
J
H
G
4PW62568-1.book Page 17 Wednesday, June 30, 2010 12:02 PM