Daikin EKMBUHCA3V3 User manual

Installation manual
Daikin Altherma low temperature monobloc backup heater English
Installation manual
Daikin Altherma low temperature monobloc backup
heater
EKMBUHCA3V3
EKMBUHCA9W1

Table of Contents
Installation manual
2
EKMBUHCA3V3 + EKMBUHCA9W1
Daikin Altherma low temperature monobloc backup heater
4P405547-1C – 2015.08
Table of Contents
1 About the documentation 2
1.1 About this document.................................................................. 2
2 About the box 2
2.1 Backup heater ........................................................................... 2
2.1.1 To remove the accessories from the backup heater... 2
3 Preparation 2
3.1 Preparing installation site .......................................................... 2
3.1.1 Installation site requirements of the backup heater .... 2
3.2 Preparing water piping .............................................................. 3
3.3 Preparing electrical wiring ......................................................... 3
3.3.1 Overview of electrical connections for external and
internal actuators ........................................................ 3
4 Installation 3
4.1 Opening the units ...................................................................... 3
4.1.1 To open the backup heater......................................... 3
4.1.2 To open the switch box cover of the backup heater ... 3
4.2 Mounting the backup heater...................................................... 3
4.2.1 To install the backup heater........................................ 3
4.3 Connecting the water piping...................................................... 4
4.3.1 To connect the water piping to the backup heater...... 4
4.4 Connecting the electrical wiring................................................. 5
4.4.1 To connect the electrical wiring on the backup heater 5
4.4.2 To connect the backup heater power supply .............. 5
4.4.3 To connect the backup heater kit to the control box ... 6
5 Starting up the system 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:
▪General safety precautions:
▪ Safety instructions that you must read before installing
▪ Format: Paper (in the box of the outdoor unit)
▪Outdoor unit installation manual:
▪ Installation instructions
▪ Format: Paper (in the box of the outdoor unit)
▪Control box installation manual:
▪ Installation instructions
▪ Format: Paper (in the box of the control box)
▪Option box installation manual:
▪ Installation instructions
▪ Format: Paper (in the box of the option box)
▪Backup heater installation manual:
▪ Installation instructions
▪ Format: Paper (in the box of the backup heater)
▪Installer reference guide:
▪ Preparation of the installation, technical specifications, good
practices, reference data,…
▪ Format: Digital files on http://www.daikineurope.com/support-
and-manuals/product-information/
▪Addendum book for optional equipment:
▪ Additional info about how to install optional equipment
▪ Format: Paper (in the box of the outdoor unit) + Digital files on
http://www.daikineurope.com/support-and-manuals/product-
information/
Latest revisions of the supplied documentation may be available on
the regional Daikin website or via your dealer.
The original documentation is written in English. All other languages
are translations.
2 About the box
2.1 Backup heater
NOTICE
▪ The backup heater is an option and can only be used in
combination with outdoor units EDLQ05+07CAV3 and
EBLQ05+07CAV3.
▪ To be able to use the backup heater, it is required that
optional control box EKCB07CAV3 is part of the
system.
2.1.1 To remove the accessories from the
backup heater
1Remove the wall bracket from the box.
3 Preparation
3.1 Preparing installation site
3.1.1 Installation site requirements of the
backup heater
▪ Mind the measurement guidelines:
Maximum distance between the backup heater and
the outdoor unit
10m
▪ Mind the following spacing installation guidelines:

4 Installation
Installation manual
3
EKMBUHCA3V3 + 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
(EBLQ05+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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 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
1Fix the wall bracket to the wall with M5 screws.

4 Installation
Installation manual
4
EKMBUHCA3V3 + EKMBUHCA9W1
Daikin Altherma low temperature monobloc backup heater
4P405547-1C – 2015.08
2×
2Hang the backup heater onto the wall bracket.
3Mark the position of the hole at the bottom of the backup
heater.
4Remove the backup heater from the wall bracket.
5Drill a hole for the bottom screw and insert a plug.
6Hang the backup heater onto the wall bracket. Make sure it is
fixed properly.
7Fix the bottom of the backup heater to the wall with an M5
screw.
4.3 Connecting the water piping
4.3.1 To connect the water piping to the backup
heater
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.
1Connect the water piping (field supply) to the water in- and
outlet of the backup heater.
ba
aWater inlet
bWater outlet
NOTICE
When the backup heater is installed in a reversible system
(EBLQ05+07CAV3), and below conditions are met (see
illustration), condensation may occur inside the backup
heater. To provide a bypass for the condensate, install
valve kit EKMBHBP1. Do NOT install any other valve kit
than EKMBHBP1. For installation instructions, refer to the
installer reference guide and the documentation delivered
with the valve kit.
Valve kit conditions
7
10
13
16
19
22
25
28
31
7
10
13
16
19
22
25
28
31
20 23 26 29 32
A (°C) A (°C)
B (°C DB)
ALeaving water evaporator temperature
BDry‑bulb temperature
Relative humidity 40%
Relative humidity 60%
Relative humidity 80%
Example: Given are an ambient temperature of 25°C and a relative
humidity of 40%. If the leaving water evaporator temperature is
<12°C, condensation will occur.
Note: See the psychrometric chart for more information.

4 Installation
Installation manual
5
EKMBUHCA3V3 + EKMBUHCA9W1
Daikin Altherma low temperature monobloc backup heater
4P405547-1C – 2015.08
INFORMATION
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
"Commissioning" chapter of 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
Low voltage
▪ Backup heater kit thermistor (interconnection with
control box EKCB07CAV3)
▪ Backup heater kit thermal protector (interconnection
with control box EKCB07CAV3)
▪ Backup heater kit connection (to control box
EKCB07CAV3)
b
High
voltage
▪ Main power supply
1Insert the wiring from the bottom of the backup heater.
2Inside the backup heater, route the wiring as follows:
Backup heater
type
Routing
*3V
a b
a Low voltage wiring
b High voltage wiring
*9W
a b
a Low voltage wiring
b High voltage wiring
3Fix 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 To connect the backup heater power
supply
CAUTION
To guarantee the unit is completely earthed, always
connect the backup heater power supply and the earth
cable.
CAUTION
If a tank with a built‑in 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61000-3-12 (European/
International Technical Standard setting the limits for
harmonic currents produced by equipment connected to
public low-voltage systems with input current >16A and
≤75A per phase.).
(b) This equipment complies with EN/IEC61000‑3‑11
(European/International Technical Standard setting the
limits for voltage changes, voltage fluctuations and flicker in
public low-voltage 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.
1Connect the backup heater power supply. For *3V models, a
double‑pole fuse is used for F1B. For *9W models, a 4‑pole
fuse is used for F1B.
2If required, modify the connection on terminal X14M.
Backup heater
type
Connections to
backup heater power
supply
Connections to
terminals
3kW 1~ 230V
(*3V)
L NL N
F1B
—

5 Starting up the system
Installation manual
6
EKMBUHCA3V3 + EKMBUHCA9W1
Daikin Altherma low temperature monobloc backup heater
4P405547-1C – 2015.08
Backup heater
type
Connections to
backup heater power
supply
Connections to
terminals
3kW 1~ 230V
(*9W)
6kW 1~ 230V
(*9W)
LLNN
F1B
1234 5 6
X14M
6kW 3N~ 400V
(*9W)
9kW 3N~ 400V
(*9W)
F1B
L1 L2 L3
1234 5 6
X14M
3Fix 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.
3kW
1~ 230V
6kW
1~ 230V
6kW
3N~
400V
9kW
3N~
400V
K1M/1 K5M/13 52.9Ω 52.9Ω ∞ ∞
K1M/3 ∞ ∞ 105.8Ω 105.8Ω
K1M/5 ∞ ∞ 105.8Ω 105.8Ω
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 ∞ ∞ ∞ ∞
Example measure resistance between K1M/1 and K5M/13:
K1M K2MK2M
1 3 5 13
2 4 6 14
K5M
1 3 5 13
2 4 6 14
1 3 5 13
2 4 6 14
Ω
Ω
4.4.3 To connect the backup heater kit to the
control box
1For the thermistor, connect 2 wires between backup heater
terminals X15M/1+2 and control box terminals X2M/5+6.
2For the thermal protector, connect 2 wires between backup
heater terminals X15M/3+4 and control box terminals
X2M/11+12.
3For 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
X8M
X1M
X15M
A4P
F1B
14
13
12
11
6
5
15
1234567
4Fix the cable with cable ties to the cable tie mountings.
INFORMATION
▪ For details about the connections, refer to the wiring
diagram.
▪ Use a multi-core cable.
▪ 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.
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.

4P405547-1C 2015.08
Copyright 2015 Daikin