EKHBH/X016BB
Indoor unit for air to water heat pump system
4PW62572-1A – 01.2011
Installation manual
20
Connection of the backup heater power supply
Power circuit and cable requirements
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.
(1)(2)
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.
Connection of the thermostat cable
Connection of the thermostat cable depends on the application.
Typical application examples" on page
"8.2. Room thermostat installation configuration" on page 23
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
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.
"3.4. Typical application examples" on page 4
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
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
and field setting [F-00] in
CAUTION
Use a dedicated power circuit for the backup heater and
booster heater
(a)
. Never use a power circuit shared by
another appliance.
(a) Only applicable for tank with built-in electrical booster heater (EKHW*).
Indoor unit model
Backup
heater
capacity
Backup heater
nominal
voltage
Maximum
running
current
Z
max
(
Ω
)
EKHB*016BB3V3
3 kW
1x 230 V
13 A
—
EKHB*016BB6V3
(a)(b)
(a) Equipment complying with EN/IEC 61000-3-12
(b) This equipment complies with EN/IEC 61000-3-11
provided that the system
impedance Z
sys
is less than or equal to Z
max
at the interface point between the
user's supply and the public system. It is the responsibility of the installer or user
of the equipment to ensure, by consultation with the distribution network operator
if necessary, that the equipment is connected only to a supply with a system
impedance Z
sys
less than or equal to Z
max
.
6 kW
1x 230 V
26 A
0.29
EKHB*016BB6WN
6 kW
3x 400 V
8.6 A
—
EKHB*016BB9WN
9 kW
3x 400 V
13 A
—
EKHB*016BB6T1
6 kW
3x 230 V
15 A
—
EKHB*016BB9T1
9 kW
3x 230 V
23 A
—
(1) European/International Technical Standard setting the limits for harmonic
currents produced by equipment connected to public low-voltage systems
with input current >16 A and
≤
75 A per phase.
(2) European/International Technical Standard setting the limits for voltage
changes, voltage fluctuations and flicker in public low-voltage supply
systems for equipment with rated current
≤
75 A.
3x 230 V
3x 400 V
1x 230 V
L1
N
L1
L2
L3
N
L1
N
X1M
X1M
X3M
L1 L2 L3
X2M
SP1
SP2
1
2
3
4
SP1
First set point contact
SP2
Second set point contact
