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14 Technical data
Installer reference guide
103
EKCB
EK2CB EKMBU EKMBUHCA9W1
Daikin Altherma low temperature monobloc
4P405544-1 – 2015.03
Control box option: option box
X1M/L
X1M/N
X1M/PE
A4P/X5A.1
A4P/X5A.2
A4P/X5A.3
F2U
X1A
X2A
1 2 3
X5A
X1M
1 2 3 4 5
X8M
X2M
3
2
1
5
4
3
2
1
1 2 3 4 5 6 7 8
X3A
X4A
X2M
1 2 3 4 5 6
X14A
ON
OFF
8 7 6 5 4 3 2 1
DS1
F1U
1 2 3
14
5 6 3 4 1 2 1a 2a
7 8 9 10 11 12
15
13
A4P
L N
+12V
GND
S1P
S2P
S3P
R6T
-t°
S5P
S6P
S4P
1 2
4D094176-1A_Page 10
Space C/H ON/OFF output
Max. voltage 250V AC
Max. load 3A
Min. load 10mA
Ext. heat source
Max. voltage 250V AC
Max. load 3A
Min. load 10mA
Control box
Option box
Power limitation digital inputs:
5 V DC detection
(voltage supplied by PCB)
Power limitation
digital input :
5 V DC detection
(voltage supplied by PCB)
external indoor ambient
sensor option
Electric pulse meter inputs:
5 V DC pulse detection
(voltage supplied by PCB)
Alarm output
Max. load 150mA - 12 V DC
A1P
Main PCB
A2P
Current loop PCB
A3P
*
On/OFF thermostat (PC=power circuit)
A3P
*
Heat pump convector
A4P
*
Extension PCB (control, optional)
A5P
User interface PCB
A7P
*
Receiver PCB (wireless On/OFF thermostat)
DS1 (A4P)
*
DIP switch
B1L
Flow sensor
E1H
Backup heater element (1 kW)
E2H
Backup heater element (2 kW)
E3H
Backup heater element
E4H
Booster heater (3 kW)
E6H
Plate heat exchanger heater tape
E7H
Expansion vessel heater
F1B
*
Overcurrent fuse backup heater
F2B
*
Overcurrent fuse booster heater
F1T, F2T
*
Thermal fuse backup heater
F1U (A4P)
Fuse T 2 A 250 V
F2U (A4P)
Fuse T 2 A 250 V for 3‑way valve
FU1 (A1P)
Fuse T 6.3 A 250 V
FU2 (A1P)
Fuse T 6.3 A 250 V
K1R
*
Backup heater relay (step 1)
K2R
*
Backup heater relay (step 2)
K1M
*
Contactor backup heater (step 1)
K2M
*
Contactor backup heater (step 2)
K3M
*
Contactor booster heater
K5M
*
Safety contactor backup heater (only for
*9W)
K*R
Relay on PCB
M1P
Main supply pump
M2P
#
Domestic hot water pump
M3S
3-way valve for domestic hot water
Q*DI
#
Earth leakage circuit breaker
Q1L
*
Thermal protector backup heater
Q2L
*
Thermal protector booster heater
R1T (A1P)
Outlet water heat exchanger thermistor
R1T (A5P)
Ambient sensor user interface
R1T (A3P)
*
Ambient sensor On/OFF thermostat
R2T
*
Outlet backup heater thermistor
R2T (A3P)
*
External sensor (floor or ambient)
R3T (A1P)
Refrigerant liquid side thermistor
R4T (A1P)
Inlet water thermistor
R5T
*
Domestic hot water thermistor
Summary of Contents for EK2CB07CAV3
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