Connection Of The Thermostat Cable; Connection Of The Valve Control Cables - Daikin EKCBX008BBV3 Installation Manual

Connection of the thermostat cable

Connection of the thermostat cable depends on the application.
See also "8. Typical application examples" on page 7
"12.2. Room thermostat installation configuration" on page 21
more 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 21
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 "8. Typical application examples" on page 7
point control" on page 29.
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
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 22
setup" on page 34.
EKCBX/H008BBV3
Unit for air to water heat pump system
4PW66983-1C – 08.2011
"12.2. Room
for more
and "Dual set
SP1 First set point contact
SP2 Second set point contact
"12.3. Pump operation
and field setting [F-00] in "[F] Option

Connection of the valve control cables

Valve requirements
■
Power supply: 230 V AC
and
■
for
Maximum running current: 100 mA
Wiring the 2-way valve
1 Using the appropriate cable, connect the valve control cable to
the X2M terminal as shown on the wiring diagram.
NOTICE
Wiring is different for a NC (normal closed) valve and
a NO (normal open) valve. Make sure to connect to
the correct terminal numbers as detailed on the wiring
diagram and illustrations below.
Normal closed (NC) 2-way valve
X2M
2 Fix the cable(s) with cable ties to the cable tie mountings to
ensure strain relief.
Wiring the 3-way valve
1 Using the appropriate cable, connect the valve control cable to
the appropriate terminals as shown on the wiring diagram.
NOTICE
Two types of 3-way valves can be connected. Wiring
is different for each type:
■
■
"Spring return 2-wire" valve
X2M
2 Fix the cable(s) with cable ties to the cable tie mountings to
ensure strain relief.
Normal open (NO) 2-way valve
5 6 7
X2M
M
NC
"Spring return 2-wire" type 3-way valve
The 3-way valve should be fitted as such that
when the 3-way valve is idle (not activated), the
space heating circuit is selected.
"SPST 3-wire" type 3-way valve
The 3-way valve should be fitted as such that
when terminal ports 9 and 10 are electrified, the
domestic hot water circuit is selected.
"SPST 3-wire" valve
8 9 10 X2M 8
M
5 6 7
M
NO
9 10
M
Installation manual
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