Daikin RKMBUHCA3V3, RKMBUHCA9W1 Installation manuals

Installation manual

ROTEX HPSU low temperature monobloc backup

heater

RKMBUHCA3V3
RKMBUHCA9W1

Installation manual

ROTEX HPSU low temperature monobloc backup heater

English

Table of Contents

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

▪ Installer reference guide:

▪ Preparation of the installation, technical specifications, good

practices, reference data,…

▪ Format: Digital files on the ROTEX homepage

▪ 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

the ROTEX homepage

Latest revisions of the supplied documentation may be available on
the regional ROTEX 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 RDLQ05+07CAV3 and
RBLQ05+07CAV3.

▪ To be able to use the backup heater, it is required that

optional control box RKCB07CAV3 is part of the
system.

2.1.1 To remove the accessories from the backup heater

1 Remove the wall bracket from the box.

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)

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

▪ Mind the following spacing installation guidelines:

10m

Installation manual

2

ROTEX HPSU low temperature monobloc backup heater

RKMBUHCA3V3 + RKMBUHCA9W1

4P414875-1 – 2015.08

>50 >50

>200

>500

>350

INFORMATION

2

1

2×

1

3×

2

If the backup heater is installed in a reversible system
(RBLQ05+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.

4 Installation

4 Installation

4.1 Opening the units

4.1.1 To open the backup heater

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

Interconnection cable

1 Backup heater kit

2 Backup heater kit

3 Backup heater kit

Backup heater Power supply Required number of

RKMBUHCA3V3 1× 230V 2+GND

RKMBUHCA9W1 1× 230V 2+GND+2 bridges

thermistor

thermal protector

connection (from
control box)

(a) Minimum cable section: 0.75mm2; maximum length: 10m.

3× 400V 4+GND

2

2

2 (3V3)

3 (6V3, 6W1,
9W1)

conductors

running

current

(a)

(a)

(a)

4.1.2 To open the switch box cover of the backup heater

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.

NOTICE

More technical specifications of the different connections
are indicated on the inside of the backup heater.

RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc backup heater
4P414875-1 – 2015.08

Installation manual

3