4 Installation
Installation manual
3
EKMBU EKMBUHCA9W1
Daikin Altherma low temperature monobloc backup heater
4P405547-1C – 2015.08
>50
>50
>200
>500
>350
INFORMATION
If the backup heater is installed in a reversible system
(07CAV3) and valve kit EKMBHBP1 is part of the
system, it may be required to provide more space under
the backup heater than indicated above. For more
information, refer to the installer reference guide and to the
documentation of the valve kit.
▪ The backup heater is designed to be wall-mounted in indoor
locations only. Make sure the installation surface is a flat and
vertical non-combustible wall.
▪ The backup heater is designed to operate in ambient
temperatures ranging from 5~30°C.
3.2
Preparing water piping
When installing the backup heater in the system, make sure the
required minimum water flow rate is guaranteed at all times. For
more information, refer to the installation manual of the outdoor unit.
3.3
Preparing electrical wiring
3.3.1
Overview of electrical connections for
external and internal actuators
Item
Description
Wires
Maximum
running
current
Interconnection cable
1
Backup heater kit
thermistor
2
(a)
2
Backup heater kit
thermal protector
2
(a)
3
Backup heater kit
connection (from
control box)
2 (3V3)
3 (6V3, 6W1,
9W1)
(a)
(a)
Minimum cable section: 0.75 mm
2
; maximum length: 10 m.
Backup heater
Power supply
Required number of
conductors
EKMBUHCA3V3 1× 230 V
2+GND
EKMBUHCA9W1 1× 230 V
2+GND+2 bridges
3× 400 V
4+GND
NOTICE
More technical specifications of the different connections
are indicated on the inside of the backup heater.
4
Installation
4.1
Opening the units
4.1.1
To open the backup heater
2
1
2×
4.1.2
To open the switch box cover of the
backup heater
1
3×
2
4.2
Mounting the backup heater
4.2.1
To install the backup heater
1
Fix the wall bracket to the wall with M5 screws.
Summary of Contents for EKMBUHCA3V3
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