Piping Insulation; Field Wiring - Daikin EKHBHE008BA3V3 Installation Manual

NOTE During filling, it might not be possible to remove all
air in the system. Remaining air will be removed
through the automatic air purge valves during first
operating hours of the system. Additional filling
with water afterwards might be required.
The water pressure indicated on the manometer
will vary depending on the water temperature
(higher pressure at higher water temperature).
However, at all times water pressure should
remain above 0.3 bar to avoid air entering the
circuit.
The unit might dispose some excessive water
through the pressure relief valve.
Water quality must be according to EU directive
98/83 EC.

Piping insulation

The complete water circuit, inclusive all piping, must be insulated to
prevent condensation during cooling operation and reduction of the
cooling and heating capacity.
If the temperature is higher than 30°C and the humidity is higher than
RH 80%, then the thickness of the sealing materials should be at
least 20 mm in order to avoid condensation on the surface of the
sealing.

Field wiring

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 and national legislation.
Switch off the power supply before making any
connections.
Use only copper wires.
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
European and national 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 earth. Do not earth the unit to
a utility pipe, surge absorber, or telephone earth.
Incomplete earth may cause electrical shock.
Be sure to install an earth leakage circuit breaker in
accordance with
regulations. Failure to do so may cause electrical
shock or fire.
Be sure to install the required fuses.
EKHBH/XE008BA
Indoor unit for air to water heat pump system
4PW56301-1A
relevant local and national
Overview
The illustration below gives an overview of the required field wiring
between several parts of the installation. Refer also to
application examples" on page
D
B E
2
C
3
4
1
A
A Single power supply for
outdoor unit, backup
heater and booster
heater
B Outdoor unit
C Bottom plate heater
(a)
EKBPHT
D Backup heater
E Indoor unit
F Room thermostat
(optional)
(a) Bottom plate heater is only applicable in combination with ERLQ or in case of
optional EKBPHT kit.
Item Description
1 Power supply cable for outdoor
unit
2 Indoor unit power supply and
communication cable
3 Power cable for bottom plate
heater
4 Power supply cable for backup
heater
5 Room thermostat cable
6 3-way valve control cable
7 2-way valve control cable
8 Booster heater power supply
and thermal protection cable
9 Thermistor cable
10 Booster heater power supply
cable
11 User interface cable
(a) Refer to nameplate on outdoor unit.
2
(b) Cable section 2.5 mm
(c) Minimum cable section 1.5 mm
(d) See table under "Connection of the backup heater power supply" on page
(e) Minimum cable section 0.75 mm
(f) The thermistor and connection wire (12 m) are delivered with the domestic hot
water tank.
2
(g) Cable section 0.75 mm till 1.25 mm
CAUTION
Select all cables and wire sizes in accordance with
relevant local and national regulations.
4.
5
T
F
I
K
11
6
M
7
M
8
9
10
G 3-way valve for domestic
hot water tank (optional)
H 2-way valve for cooling
mode (field supply)
I Domestic hot water tank
(optional)
J Booster heater
(optional)
K User interface (digital
controller)
Required
number of Maximum
conductors running current
(a)
2+GND
(b)
3+GND
(c)
2
(d)
2+GND or
3+GND
3 or 4 100 mA
2+GND 100 mA
2+GND 100 mA
(b)
4+GND
2
2+GND 13 A
2 (g)
2
2
2
, maximum length: 500 m.
Installation manual
"Typical
G
H
I
J
(e)
(e)
(e)
(f)
18.
17