Daikin EKHBH054BA Manuel D'installation page 21

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 "Typical application examples" on page 4 and "Dual set
point control" on page 29.
Contact requirements
The contact shall be a voltage free contact that ensure 24 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
SP1
1 2 3 4
SP2
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 "Pump operation
configuration" on page 23 and field setting [F-00] in "[F] Option
setup" on page 34.
Connection of the valve control cables
Valve requirements
Power supply: 24 V AC
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.
Wiring is different for a NC (normal closed) valve
NOTE
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 5 6 7
M
NC
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.
NOTE Type of 3-way valve to be connected. (Delivered
with optional domestic hot water tank)
"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
X2M 8 9 10
M
2 Fix the cable(s) with cable ties to the cable tie mountings to
ensure strain relief.
EKHBH/X054BA
Indoor unit for air to water heat pump system
4PW54216-1
First set point contact
Second set point contact
Normal open (NO) 2-way valve
X2M 5 6 7
M
NO
Power input selection to transformer TR2
This selection is needed to ensure a stable 24 V AC output.
Procedure
DANGER
Switch off all relevant power supply (outdoor unit, backup
heater, booster heater) before changing the connector.
1 Measure main input power.
2 Reconnect wire according to the result of measurement.
X8M
3 229~253 V AC
209~228 V AC
2
1 187~208 V AC
Connection to a benefit kWh rate power supply
Electricity companies throughout the world work hard to provide
reliable electric service at competitive prices and are often authorized
to bill clients at benefit rates. E.g. time-of-use rates, seasonal rates,
Wärmepumpentarif in Germany and Austria, ...
This equipment allows for connection to such benefit rate power
supply delivery systems.
Consult with the electricity company acting as provider at the site
where this equipment is to be installed to know whether it is
appropriate to connect the equipment in one of the benefit kWh rate
power supply delivery systems available, if any.
When the equipment is connected to such benefit kWh rate power
supply, the electricity company is allowed to:
interrupt power supply to the equipment for certain periods of
time;
demand that the equipment only consumes a limited amount of
electricity during certain periods of time.
Installation manual
19