IVT AirX Series, AirModule E 9 Series, Airbox E Series, AirModule E15 Series, Airbox S Series Operating Instructions Manual

Operating Instructions

AirX, AirModule E 9/15, Airbox E/S

6 720 809 065-00.1I

230V 1N~ / 400V 3N~

6 720 810 266 (2014/10)

Table of Contents

AirX, AirModule E 9/15, Airbox E/S – 6 720 810 266 (2014/10)

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Table of Contents

1 Key to symbols and safety instructions . . . . . . . . . . . . . . . . . . . 2

1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . 3

2 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1 Control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2 Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3 System overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3.1 Description of the functions . . . . . . . . . . . . . . . . . . . . . . . 4

4 Overview of the most common functions . . . . . . . . . . . . . . . . . 6

4.1 Changing the room temperature . . . . . . . . . . . . . . . . . . . 7

4.2 Setting the operating mode . . . . . . . . . . . . . . . . . . . . . . . 7

4.3 Selecting a heating circuit for the standard display . . . . 8

4.4 Favourite functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

5 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5.1 Remove dirt and leaves . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5.2 Protective covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5.3 Evaporator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5.4 Snow and ice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5.5 Moisture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5.6 Checking the safety valves . . . . . . . . . . . . . . . . . . . . . . . . 9

5.7 Particle filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5.8 Pressure Switch and Overheat protection . . . . . . . . . . 10

5.9 Cleaning the condensate pan . . . . . . . . . . . . . . . . . . . . 12

6 Connection for IP-module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

7 Environment / disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1 Key to symbols and safety instructions

1.1 Key to symbols

Warnings

The following keywords are defined and can be used in this document:

• NOTICE indicates a situation that could result in damage to property
or equipment.

• CAUTION indicates a situation that could result in minor to medium
injury.

• WARNING indicates a situation that could result in severe injury or
death.

• DANGER indicates a situation that will result in severe injury or death.

Important information

Additional symbols

Warnings in this document are identified by a warning
triangle printed against a grey background.
Keywords at the start of a warning indicate the type and
seriousness of the ensuing risk if measures to prevent
the risk are not taken.

This symbol indicates important information where
there is no risk to people or property.

Symbol Explanation

▶ Step in an action sequence
 Cross-reference to another part of the document

• List entry
– List entry (second level)

Table 1

General

AirX, AirModule E 9/15, Airbox E/S – 6 720 810 266 (2014/10)

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1.2 General safety instructions

These operating instructions are intended for the user of the heating
system.

▶ Read any operating instructions (heat pump, heating controls, etc.)

carefully before operation and keep them.

▶ Observe the safety instructions and warnings.

Intended use

This heat pump must only be used as a heat appliance in a sealed hot
water heating system for domestic purposes.

Any other use is considered inappropriate. Any damage that results from
such use is excluded from liability.

Safety of electrical appliances for domestic use and similar
purposes

The following requirements apply in accordance with EN 60335-1 in
order to prevent hazards from occurring when using electrical
appliances:

“This device can be used by children of 8 years and up as well and by
people with reduced physical, sensory or mental capabilities or lacking
in experience and knowledge, if they are supervised and have been given
instruction in the safe use of the device and understand the resulting
dangers. Children must not play with the device. Cleaning and user
maintenance may not be performed by children without supervision”

“If the power supply cable is damaged, in order to avoid risks it must be
replaced by the manufacturer or its customer service department or a
similarly qualified person.”

Inspection and servicing

Regular inspection and maintenance are prerequisites for safe and
environmentally compatible operation of the heating system.

We recommend you enter into a contract for the annual inspection and
demand-dependent servicing with an authorised contractor.

▶ Have any work carried out only by an authorised contractor.
▶ If any faults are discovered, have them remedied immediately.

Modifications and repairs

Unprofessional modifications to the heat pump or other parts of the
heating system can result in injury and/or damage to property or
equipment.

▶ Have any work carried out only by an authorised contractor.
▶ Do not remove the casing of the heat pump.
▶ Do not modify the heat pump or other parts of the heating system in

any way.

Room air

The air in the installation room must be free of combustible or chemically
aggressive substances.

▶ Do not use or store combustible or explosive materials (paper,

propellants, thinners, paints, etc.) within the vicinity of the appliance.

▶ Do not use or store corrosive substances (solvents, adhesives,

chlorinated cleaning agents, etc.) within the vicinity of the appliance.

2 General
Cooling is disabled in the UK model to comply with

the regulations for RHI.

Heat pum p AirX is together with h eat pump module AirModule or Air box
part of a series of heating systems that use outside air to provide energy
for water transferred heat and hot water.

By reversing the process and extract heat from the water and release it
into the outdoor air, the heat pump can if needed produce cooling. This
however requires the heating system to be intended for cooling.

The heat pump outdoors is connected to a heat pump module indoors
and possibly also an external heat source, which constitutes a complete
heating system. The heat pump module with an integrated immersion
heater, or the external source, acts as a supplement when additional
heat is needed, for example if the outside temperature is too low for
effective heat pump operation.

The heating system is operated via a user interface, which is fo und in the
heat pump module. The user interface manages and supervises the
system with different settings for heat, cold, hot water and other
operations. The monitoring function will e.g. turn off the heat pump in
case of disturbances to avoid damage to vital components.

2.1 Control unit

The user interface in the heat pump module manages heat production
based on outside temperature sensors and possibly in combination with
a room controller (accessories). House heating is automatically adjusted
depending on the outside temperature.

The user determines the heating system temperature by setting the
desired room temperature in the user interface or on the room
controller.

A number of accessories can be connected to the heat pump module
(e.g. pool, sun, and room controllers), providing extra functions and
setting possibilities controlled via the user interface. You will find more
information on the accessories in their user guides.

2.2 Use

After the heat pump and the heat pump module have been installed and
taken into operation, some regular maintenance is required. This might
include checking on an alarm, or other simple maintenance. The user is
usually able to solve the problem, however if it remains, the retailer
should be contacted.

System overview

AirX, AirModule E 9/15, Airbox E/S – 6 720 810 266 (2014/10)

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3 System overview

The heating system consists of two parts: the heat pump, which is
installed outdoors, and the heat pump module with or without integrated
hot water cylinder, which is installed indoors (AirModule and Airbox E).

Installation may be done using an external heat source, and the
supplemental heat source will then consist of an existing electric/gas/oil
boiler (Airbox S).

The most common heating systems are consistent with one of these
alternatives, however the system flexibility makes other combinations
possible.

3.1 Description of the functions

In a house with water based heating a difference is made between
heating water and domestic hot water (DHW). The heating water is for
radiators and floor coils and hot water is for showers and taps.

If there is a DHW cylinder in the system, the user interface will make sure
the heating of DHW is prioritised before heating of heating water for
optimised comfort.

3.1.1 Heat pump (outdoor unit)

The task of the heat pump is to retrieve energy from the outside air and
transfer it to the heat pump module.

The heat pump is inverter operated, which means that it will
automatically change the compressor speed to deliver the exact amount
of energy required at the moment. The fan is also RPM controlled and will
change its speed as needed. This provides the lowest possible energy
consumption.

Defrosting

Ice might form on the evaporator during lower outside temperatures. In
case there is enough ice to inhibit the air flow through the evaporator, an
automatic defrosting will start. As soon as the ice is gone, the heat pump
returns to its normal operation.

If the outside temperature is above +5°C the defrosting will be
performed alongside continued heat production, however if the
temperature is lower, the defrosting is done by ways of a 4-way valve
turning the heat medium direction in the circuit so that the hot gas from
the compressor melts away the ice.

Function principle

The heat production principle:

• The fan sucks up air through the evaporator.

• The energy in the air makes the refrigerant boil. The resulting gas is
drawn into the compressor.

• In the compressor, the pressure of the refrigerant is increased, and
the temperature rises. The hot gas is pushed into the condenser.

• In the condenser, the energy is transferred from the gas to water in the
heat transfer circuit. The gas is cooled down and turns into liquid.

• The pressure on the refrigerant is decreased and transferred back to
the evaporator. When the refrigerant passes the evaporator, it turns
back into gas.

• In the heat pump module, the energy is transferred from the heat
transfer circuit to the house heating system and hot water cylinder.

3.1.2 Heat pump module (indoor unit)

The heat pump module task is to distribute t he heat from the heat pump
to the heating system and the hot water cylinder. The circulation pump
in the heat pump module is RPM controlled, and will automatically

decrease in speed when demand is low. This decreases energy
consumption.

When the heating demand is higher during cold outdoor temperatures,
an additional heat source - a booster - may be required. This booster
heater is either integrated or external, an its on/off is controlled by the
user interface in the heat pump module. Please note that when the heat
pump is running, the booster heater will only provide the heating output
that the heat pump cannot produce itself. When the he at pu mp is able t o
provide all the heating needed, the booster is automatically turned off.

The heat pump stops around – 20 °C; heating and DHW
production is then taken over by the heat pump module
or a external heat source.

System overview

AirX, AirModule E 9/15, Airbox E/S – 6 720 810 266 (2014/10)

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AirModule

Heat pump AirX connected to heat pump module AirModule provides a
complete installation for both heating and domestic hot water, since the

heat pump module contains a hot water cylinder. Switching between
heating and DHW is managed by an internal 3-way valve. The integrated
booster in the heat pump module will turn on if needed.

Fig. 1 Heat pump AirX, heat pump module AirModule with integrated hot water cylinder and immersion heater

Airbox E

When heat pump AirX is connected to heat pump module AirBox E, an
external hot water cylinder is required if the purpose of the heat pump is

also to produce hot water. In this case, switching between heating and
DHW is managed by an external 3-way valve. The integrated booster in
the heat pump module will turn on if needed.

Fig. 2 Heat pump AirX, heat pump module Airbox with immersion heater, external hot water cylinder

Airbox S

When heat pump AirX is connected to heat pump module AirBox S, an
external hot water cylinder is required if the purpose of the heat pump is
also to produce hot water. In this case, switching between heating and

DHW is managed by an external 3-way valve. The module contains a
mixing valve that regulates the heat from the external booster, which is
turned on when needed.

Fig. 3 Heat pump AirX, heat pump module Airbox without immersion heater, external hot water cylinder and external booster