Connection Of The Backup Heater Power Supply; Connection Of The Thermostat Cable - Daikin EKHBX008BB3V3S Installation Manual

Connection of the backup heater power supply

Power circuit and cable requirements
CAUTION
Use a dedicated power circuit for the backup heater and
(a)
booster heater . Never use a power circuit shared by
another appliance.
(a) Only applicable for tank with built-in electrical booster heater (EKHW*).
This power circuit must be protected with the required safety devices
according to the applicable legislation.
Select the power cable in accordance with the applicable legislation.
For the maximum running current of the backup heater, refer to the
table below.
Backup heater
Indoor unit model capacity
EKHB*008BB3V3S 3 kW
Procedure
1 Using the appropriate cable, connect the power circuit to the
main circuit breaker as shown on the wiring diagram and the
illustration below.
2 Connect the earth conductor (yellow/green) to the earthing
screw on the X1M terminal.
3 Fix the cable with cable ties to the cable tie mountings to ensure
strain relief.
Note: only relevant field wiring is shown.
1x 230 V
X1M
L1 N
L1 N
EKHBX008BB3V3S
Indoor unit for air to water heat pump system
4PW62597-1 – 10.2010
Backup heater Maximum running
nominal voltage current
1x 230 V 13 A

Connection of the thermostat cable

Connection of the thermostat cable depends on the application.
See also "3.4. Typical application examples" on page 4
"8.2. Room thermostat installation configuration" on page 24
information and configuration options on pump operation in
combination with a room thermostat.
Thermostat requirements
■
Power supply: 230 V AC or battery operated
■
Contact voltage: 230 V.
Procedure
1 Connect the thermostat cable to the appropriate terminals as
shown on the wiring diagram and installation manual of the room
thermostat kit.
2 Fix the cable with cable ties to the cable tie mountings to ensure
strain relief.
3 Set DIP switch SS2-3 on the PCB to ON. See
thermostat installation configuration" on page 24
information.
Connection of the first set point and second set point contacts
The connection of the set point contact is only relevant in case dual
set point contact is enabled.
See also "3.4. Typical application examples" on page 4
point control" on page 33.
Contact requirements
The contact shall be a voltage free contact that ensure 230 V
(100 mA).
Procedure
1 Connect the contact of first set point and second set point to the
appropriate terminals as shown in the figure below
X2M
1 2 3 4
SP2 SP1
SP1 First set point contact
SP2 Second set point contact
2 Fix the cables with cable ties to the cable tie mountings to
ensure strain relief.
3 Depending on the required pump operation set DIP switch
SS2-3 and field setting [F-00]. See
configuration" on page 24
setup" on page 38.
"8.2. Room
for more
and "Dual set
"8.3. Pump operation
and field setting [F-00] in "[F] Option
Installation manual
and
for more
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