Installation manual
Daikin Altherma low temperature monobloc backup
heater
EKMBUHCA3V3 EKMBUHCA9W1
Installation manual
Daikin Altherma low temperature monobloc backup heater
English
Table of Contents
Document
Table of Contents
1 About the documentation
1.1
2
About this document..................................................................
2 About the box
2.1
3.2
3.3
4.2
4.3
4.4
2
2
Latest revisions of the supplied documentation may be available on
the regional Daikin website or via your dealer.
3
The original documentation is written in English. All other languages
are translations.
Preparing installation site ..........................................................
3.1.1
Installation site requirements of the backup heater ....
Preparing water piping ..............................................................
Preparing electrical wiring .........................................................
3.3.1
Overview of electrical connections for external and
internal actuators ........................................................
3
3
3
3
2
About the box
2.1
Backup heater
2.1.1
To remove the accessories from the
backup heater
3
3
Opening the units ......................................................................
4.1.1
To open the backup heater .........................................
4.1.2
To open the switch box cover of the backup heater ...
Mounting the backup heater......................................................
4.2.1
To install the backup heater........................................
Connecting the water piping......................................................
4.3.1
To connect the water piping........................................
Connecting the electrical wiring.................................................
4.4.1
To connect the electrical wiring on the backup heater
4.4.2
To connect the backup heater power supply ..............
4.4.3
To connect the backup heater kit to the control box ...
5 Starting up the system
Format
Digital files on http://
www.daikineurope.com/
support­and­manuals/
product­information/.
2
4 Installation
4.1
Contains…
Additional info about how to Paper (in the box of the
install optional equipment
outdoor unit)
2
Backup heater ...........................................................................
2.1.1
To remove the accessories from the backup heater...
3 Preparation
3.1
Addendum
book for
optional
equipment
3
3
3
4
4
4
4
4
4
5
6
1
Remove the wall bracket that is attached to the backside of the
backup heater.
6
1
About the documentation
1.1
About this document
Target audience
Authorised installers
Documentation set
This document is part of a documentation set. The complete set
consists of:
Document
General
safety
precautions
Contains…
Format
Safety instructions that you Paper (in the box of the
must read before installing outdoor unit)
Outdoor unit Installation instructions
installation
manual
Paper (in the box of the
outdoor unit)
Control box
installation
manual
Installation instructions
Paper (in the box of the
control box)
Option box
installation
manual
Installation instructions
Paper (in the box of the
option box)
Backup
heater
installation
manual
Installation instructions
Paper (in the box of the
backup heater)
Installer
reference
guide
Preparation of the
installation, technical
specifications, good
practices, reference data,…
Digital files on http://
www.daikineurope.com/
support­and­manuals/
product­information/.
Installation manual
2
EKMBUHCA3V3 + EKMBUHCA9W1
Daikin Altherma low temperature monobloc backup heater
4P405547­1 – 2015.03
3 Preparation
NOTICE
3
Preparation
3.1
Preparing installation site
3.1.1
Installation site requirements of the
backup heater
More technical specifications of the different connections
are indicated on the inside of the backup heater.
▪ Mind the measurement guidelines:
Maximum distance between the backup heater and
the outdoor unit
4
Installation
4.1
Opening the units
4.1.1
To open the backup heater
10 m
>200
▪ Mind the following spacing installation guidelines:
2
>50
>500
>350
>50
▪ The backup heater is designed to be wall­mounted in indoor
locations only. Make sure the installation surface is a flat and
vertical non­combustible wall.
1
▪ The backup heater is designed to operate in ambient
temperatures ranging from 5~35°C.
3.2
Preparing water piping
2×
4.1.2
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
2
Interconnection cable
1
Interconnection cable 6 (*3V)
between backup heater
7 (*9W)
kit and control box
EKCB07CAV3
(a)
To open the switch box cover of the
backup heater
(a)
Minimum cable section: 0.75 mm2; 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
1
3×
4+GND
EKMBUHCA3V3 + EKMBUHCA9W1
Daikin Altherma low temperature monobloc backup heater
4P405547­1 – 2015.03
Installation manual
3
4 Installation
4.2
Mounting the backup heater
4.3
Connecting the water piping
4.2.1
To install the backup heater
4.3.1
To connect the water piping
1
Fix the wall bracket to the wall with M5 screws.
NOTICE
Do NOT use excessive force when connecting the piping.
Deformation of the piping can cause malfunctioning of the
unit. Make sure that the tightening torque does NOT
exceed 30 N•m.
1
Connect the water piping (field supply) to the water in­ and
outlet of the backup heater.
b
a
a
b
Water inlet
Water outlet
NOTICE
2×
When installing the backup heater in a reversible system
(EBLQ05+07CAV3), condensation may occur. Therefore
provide a bypass by installing a valve kit to the water inlet
of the backup heater. For instructions, refer to the installer
reference guide. Do NOT install any other valve kit than
the one specified in the installer reference guide.
2
INFORMATION
Hang the backup heater onto the wall bracket.
Inside the backup heater, an automatic air purge valve is
installed. For the location of this valve, refer to the
"Technical data" chapter of the installer reference guide.
For instructions on how to perform an air purge, refer to the
installation manual of the outdoor unit.
4.4
Connecting the electrical wiring
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
4.4.1
To connect the electrical wiring on the
backup heater
Routing
Possible cables (depends on the installed options)
a
▪ Backup heater kit thermistor (interconnection with
control box EKCB07CAV3)
Low voltage
▪ Backup heater kit thermal protector (interconnection
with control box EKCB07CAV3)
▪ Backup heater kit connection (to control box
EKCB07CAV3)
b
▪ Main power supply
High
voltage
3
4
5
6
7
Mark the position of the hole at the bottom of the backup
heater.
Remove the backup heater from the wall bracket.
Drill a hole for the bottom screw and insert a plug.
Hang the backup heater onto the wall bracket. Make sure it is
fixed properly.
Fix the bottom of the backup heater to the wall with an M5
screw.
Installation manual
4
1
Insert the wiring from the bottom of the backup heater.
2
Inside the backup heater, route the wiring as follows:
EKMBUHCA3V3 + EKMBUHCA9W1
Daikin Altherma low temperature monobloc backup heater
4P405547­1 – 2015.03
4 Installation
Backup heater
type
(b)
Routing
*3V
a
b
a Low voltage wiring
1
Connect the backup heater power supply. For *3V models, a
double­pole fuse is used for F1B. For *9W models, a 4­pole
fuse is used for F1B.
2
If required, modify the connection on terminal X14M.
b High voltage wiring
*9W
This equipment complies with EN/IEC 61000­3­11
(European/International Technical Standard setting the
limits for voltage changes, voltage fluctuations and flicker in
public low­voltage supply systems for equipment with rated
current ≤75 A) provided that the system impedance Zsys is
less than or equal to Zmax 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 Zsys less than or equal to
Zmax.
Backup heater
type
Connections to
backup heater power
supply
3 kW 1~ 230 V
(*3V)
a
Connections to
terminals
—
F1B
b
L N
a Low voltage wiring
b High voltage wiring
3
Fix the wiring with cable ties to the cable tie mountings.
NOTICE
The distance between the high voltage and low voltage
cables should be at least 25 mm.
4.4.2
3 kW 1~ 230 V
(*9W)
6 kW 1~ 230 V
(*9W)
To connect the backup heater power
supply
F1B
L
X14M
1 2 3 4 5 6
N
CAUTION
To guarantee the unit is completely earthed, always
connect the backup heater power supply and the earth
cable.
6 kW 3N~ 400 V
(*9W)
CAUTION
If a tank with a built­in electrical booster heater (EKHW) is
part of the system, use a dedicated power circuit for the
backup heater and booster heater. NEVER use a power
circuit shared by another appliance. This power circuit
must be protected with the required safety devices
according to the applicable legislation.
Depending on the model, the backup heater capacity can vary. Make
sure that the power supply is in accordance with the backup heater
capacity, as listed in the table below.
Backup
heater type
Backup
heater
capacity
Power
supply
Maximum
running
current
Zmax(Ω)
*3V
3 kW
1~ 230 V
13 A
—
*9W
3 kW
1~ 230 V
13 A
—
6 kW
1~ 230 V
26 A(a)(b)
—
6 kW
3N~ 400 V
8.6 A
—
9 kW
3N~ 400 V
13 A
—
(a)
Equipment complying with EN/IEC 61000­3­12 (European/
International Technical Standard setting the limits for
harmonic currents produced by equipment connected to
public low­voltage systems with input current >16 A and
≤75 A per phase.).
EKMBUHCA3V3 + EKMBUHCA9W1
Daikin Altherma low temperature monobloc backup heater
4P405547­1 – 2015.03
9 kW 3N~ 400 V
(*9W)
3
F1B
X14M
1 2 3 4 5 6
L1 L2 L3
Fix the cable with cable ties to the cable tie mountings.
INFORMATION
For more information on the backup heater types, and for
how to configure the backup heater, refer to the
"Configuration" chapter of the installation manual of the
outdoor unit.
During connection of the backup heater, miswiring is possible. To
detect possible miswiring on the *9W model, it is highly
recommended to measure the resistance value of the heater
elements. Depending on the different backup heater types, following
resistance values (see table below) should be measured. ALWAYS
measure the resistance on the contactor clamps K1M, K2M, and
K5M.
Installation manual
5
5 Starting up the system
K1M/1
INFORMATION
3 kW
6 kW
6 kW
9 kW
1~ 230 V
1~ 230 V
3N~
400 V
3N~
400 V
▪ For details about the connections, refer to the wiring
diagram.
K5M/13
52.9Ω
52.9Ω
∞
∞
▪ Use a multi­core cable.
K1M/3
∞
∞
105.8Ω
105.8Ω
K1M/5
∞
∞
105.8Ω
105.8Ω
▪ For backup heater kit EKMBUHCA3V3, it is NOT
required to make a connection between backup heater
terminal X15M/6 and control box terminal X2M/14.
K1M/3
K1M/5
26.5Ω
26.5Ω
105.8Ω
105.8Ω
K2M/1
K5M/13
∞
26.5Ω
∞
∞
K2M/3
∞
∞
52.9Ω
52.9Ω
K2M/5
∞
∞
52.9Ω
52.9Ω
K2M/3
K2M/5
52.9Ω
52.9Ω
52.9Ω
52.9Ω
K1M/5
K2M/1
∞
∞
∞
∞
5
Starting up the system
For instructions on how to configure and commission the system,
and hand it over to the user, refer to the installation manual of the
outdoor unit.
Example measure resistance between K1M/1 and K5M/13:
Ω
Ω
K1M
K2M
1 3 5 13
1 3 5 13
2 4 6 14
2 4 6 14
K5M
1 3 5 13
2 4 6 14
4.4.3
To connect the backup heater kit to the
control box
1
For the thermistor, connect 2 wires between backup heater
terminals X15M/1+2 and control box terminals X2M/5+6.
2
For the thermal protector, connect 2 wires between backup
heater terminals X15M/3+4 and control box terminals
X2M/11+12.
3
For the connection with the control box, connect 3 wires
between backup heater terminals X15M/5+6+7 and control box
terminals X2M/13+14+15.
X2M
A4P
F1B
X15M
X8M
Fix the cable with cable ties to the cable tie mountings.
Installation manual
6
6
5
X1M
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14
13
12
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EKMBUHCA3V3 + EKMBUHCA9W1
Daikin Altherma low temperature monobloc backup heater
4P405547­1 – 2015.03
4P405547­1 2015.03
Copyright 2015 Daikin