Airwell In Residential Air Conditioning User Guide

Airwell In Residential Air Conditioning User Guide

PRODUCT PART

INTRODUCTION

This practical guide is intended for anyone who has to select AIRWELL spare parts. You will find a quick presentation of the basic principles of cold production in order to understand the role of the main parts of an installation. Then, you will find explanations on the selection of spare parts for the Airwell brand. Enjoy your reading

BASIC PRINCIPLES

COOLING AND ENERGY
Cold is not created. To make cold, energy must be removed. As a matter of principle, it is assumed that the energy movement is always from hot to cold. The role of a refrigeration system such as air conditioning is therefore to transfer energy.

In the summer, the room is heated by indoor and outdoor heat. To cool the room, energy must be removed.

THE REFRIGERATION SYSTEM

As seen before, producing cold means removing energy from an environment. To make cold, we use the thermodynamic properties of a fluid. As the fluid evaporates, it absorbs heat. The energy is absorbed at the evaporator when the liquid fluid changes to vapour form. The refrigerant is circulated through the compressor where its pressure increases. The pressure increases from low pressure to high pressure. The energy absorbed at the evaporator is released at the condenser. The fluid changes to a liquid state, releasing heat. Then, in the expansion valve, the fluid changes from high pressure to low pressure. Low pressure liquid arrives in the evaporator where it changes state and so on. In residential air conditioning (summer operation in «cold» mode), the evaporator is in the indoor unit. The compressor, condenser and expansion valve are located in the outdoor unit.

Concept of a reversible system
Here is an installation in summer (Cooling mode):

In winter, the aim is to heat the room. Therefore, it is sufficient to reverse the refrigeration cycle to provide energy to the air in the room. Overall, we want to obtain this:

However, to reverse the direction of flow without moving the equipment, a component called a 4-way valve or cycle reversal valve is used.

COOLING AND DRY MODE

HEATING MODE

IDENTIFICATION OF AIRWELL EQUIPMENT

Floor Ceiling

| |

Can be placed on the ceiling or on a wall.

Cassette 600×600

| | Placed on the ceiling, usually when there is a there is a false ceiling

Cassette 900×900

| |
Ducted| | This unit is ducted. It is concealed and the supply air passes through a grill into the treated room
High Wall| | Widespread and wall-mounted unit

Window

| |

Used for small rooms. This unit is placed in the middle of a wall

Portable (monoblock)

| |

A unit that has the advantage of being easily used without installation by a profes- sional.

Portable (bi-split)

| |

Similar to the previous unit but in two parts

Rooftop

| |

Unit for large rooms that is placed on the roof. It is ducted.

Air Cabinet

| |

Unit used in tertiary and commercial pre- mises to treat a large volume

---|---|---

Water-cooled console (heat pump)

| |

A water-based system that is recom- mended when the installation of an exter- nal unit is not possible.

Water-cooled condensing unit (Heat pump)

| |

Same as the previous unit but in two parts

Heat Pump

| | | | Allows the house to be heated by a water circuit and make hot water (*In the case of an Air-Water heat pump)

Thermodynamic Water Heater

| |

Used for the production of domestic hot water (DHW) production

Thermodynamic dual-flow CMV

| | CMV is the acronym for Mechanical Controlled Ventilation. This system allows stale air to be evacuated from the home and outside air to enter. The advantage of a thermodynamic system is that it recovers energy from the outgoing air and transfers it to the incoming air

VRF

| |

VRF stands for Débit de Réfrigérant Va- riable. It can also be called VRF (Variable Refrigerant Flow) or VRV. This system is used in tertiary sector buildings such as for example an office building where a lot of where high power is required.

ACCESSING THE INTERFACE

The spare parts selection interface is accessible on the website: https://[www .airwell-pro.com](http://www.airwell-pro.com)/log-in/ If you do not have an account and you are a professional, you can create one by filling in the online form. If you have any difficulties in creating an account, you can write to the marketing team via the email address: mkg@airwell.com

Once you are logged in, click on OUR DOCUMENTATION > Select spare parts

THE SPARE PARTS INTERFACE: SP CATALOGUE

USING THE SPARE PARTS INTERFACE
At Airwell we call this interface: SP Catalog. Having a product code is essential for consulting the associated exploded view. An Airwell product code usually starts with 7SP, 7OG or 7HP and an Electra product code usually starts with ESP or EOG. In the Product or Part Search tab, enter the product code in Material Number as follows:

After double-clicking on the second line (highlighted in blue), you can access the exploded view

DESCRIPTION OF THE INTERFACE

At Airwell all part numbers start with 1PR followed by 6 digits. If the part you are looking for does not have a code starting with 1PR, consider it unavailable and not replaced. By exception some codes correspond to accessories such as remote controls. The accessory codes start with 7AC.

The acronyms to know are:

• CR : Cancel and Replaced, meaning that the original part no longer exists but has been replaced by another reference.
• CNR : Cancel not Replaced means that the original part is unavailable and is not replaced.
• B-C : B-C: Buy and Cancel means that it is an end of stock part that will not be renewed. Then, this part will be classified as CNR.

To facilitate your search, you can sort the list of parts alphabetically by clicking on Description

COMMON PARTS

TEMPERATURE SENSORS
As Airwell units evolve and have different technologies, there are different sensor names. The equivalents are as follows:

| **LETTER MARKING| ****NUMBER MARKING| TDF AND TNF THERMODYNAMIC WATER HEATER
---|---|---|---
Indoor room sensor| RAT| T1|
Indoor heat exchanger sensor| ICT| T2|
Gas return sensor| RGT| T2B|
Liquid return sensor| RLT| |
Outdoor exchanger sensor| OCT| T3| T3
Outdoor room sensor| OAT| T4| T4
Compressor discharge probe| CTT| T5| Tp
Compressor suction probe| SUCT| |
Return probe| | | Th
Top of tank probe| | | T5U
Bottom probe**| | | T5L

General diagram of sensor locations on a refrigeration diagram:

Specific case of sensors on the MFL range (outdoor unit):

• OIL1 : Oil sensor N°1
• OIL2 : Oil sensor N°2
• AIR TEMP : Outdoor temperature sensor
• DISH1 : Compressor discharge sensor N°1
• DISH2 : Compressor discharge sensor N°2
• SCT : Compressor suction probe
• EXL1 : Liquid probe N°1
• EXL2 : Liquid probe N°2
• EXG1 : Gas probe N°1
• EXG2 : Gas probe N°2

Example EXG1 sensor on MFL 100 / R410 7SP141013

And on indoor units of the MFL range (NKFL, NK2FL, NWFL, NDLP, NDHP, NWFL), the probes are:

• TH1 : Indoor room sensor
• TH2 : E1 exchanger sensor
• TH3 : E2 exchanger sensor
• TH4 : E3 exchanger sensor
• TH5 : Air outlet sensor

ELECTRONIC CARDS
On monosplits (one unit connected to one indoor unit), there are very often «all-in-one» electronic boards. When the power input is higher like in multisplits (a single outdoor unit connected to 2, 3, 4 or 5 indoor units) there are several electronic boards.
Let’s take the YDZC group as an example:

This group contains a main board 1PR031746 and an inverter board (whose role is to manage the motor speed) 1PR030476.

Specific case of electronic boards on the MFL range (outdoor unit)
The MFL model groups are old (released around 2008), they have unusual board names compared to other units. On an MFL140R-3 7SP14R029, there are 3 electronic boards:

• The FIL board / filter board which protects the other boards by filtering the power supply.
• The CR board / main board which centralises all the functions
• The HIC board / inverter board which manages the speed of the inverter compressor

ADDITIONAL INFORMATION

ABBREVIATIONS AND ACRONYMS
Refrigeration professionals including AIRWELL often use abbreviations and acronyms. Care must be taken not to confuse an acronym with a unit type.

Example:
SX : AIRWELL Residential floor ceiling
CTA : Air Handling Unit AHU (this is not a reference)

List of general abbreviations and acronyms in Refrigeration and Air Conditioning

List of abbreviations and acronyms used at Airwell

DS| Follow-up file. This is a file number used by the After Sales Service
---|---
BL| Bill of Lading
ODS| Service Order (used by the intervention department)
FG| Finish Good
WFG| Warranty on finished goods
SB| Service Bulletin: Part or handling specific notice, an update
SM| Service Manual
IOM| Installation and Operation Manual
ASM| Area Sales Manager (for new products and accessories)

These lists are non-exhaustive.

FREQUENTLY ASKED QUESTIONS

The customer asks me for a part that I don’t know or I’m not sure what to do between two markers. What should I do?
The technician is always in the best position to determine the correct reference. In case of doubt, don’t hesitate to send him the exploded view so that he can find the part he wants himself.

How do I know if an old Airwell France product is managed by Systemair or by Airwell Group?
Start by checking in this list whether it is a product managed by Systemair. Systemair is the new owner of Airwell France since 2014.

/ VLS / AQTL / SLS / CWP RC/ SWR / RWR
INDUSTRIAL HEAT PUMPS| MQH / AQH / AQVSH / AQVH / AQCH / VLH / AQTH / SLH / CWP-HP
AIR CONDITIONING CABINETS| X AO Systemair / X AR Systemair / UC Systemair / CW / CD / MD
ICE WATER TERMINALS| AWC / AWN / AHC / AHN / VHC / VH / VPF / VPX / VPU / VH2N / WKW / VHF / KCO / HAWAIR KOG / XLMOG / WSWOG / DKWOG
WATER LOOP HEAT PUMPS| HRW / CWAR / EFTYS
ROOFTOP| HA / HAN / ROOFTAIR (RT-RTH) / ROOTECH (RTCL/RTCH)
CONDENSING UNITS| CDN / AQC / AQVC / VLC / AQTC
WATER-COOLED CONDENSING UNITS| CWPCO / RWC / SWS

• If the product appears in this list, you can redirect the request to Systemair by phone at 08.91.70.04.07, by fax at 02.32.32.50.33 or by email at: parts.france@systemair.fr
• If the product does not appear in this list or if you have any doubts, please contact Airwell Group by phone at 01.76.21.92.84 or by e-mail at service@airwell.com

What is the difference between a condenser and a capacitor?

• A condenser is a heat exchanger.
• A condenser is an electrical part connected to a motor.

Is it possible to order a part that does not have a 1PR reference but a sequence of of numbers?

• No. If the part number is not a code starting with 1PR or an accessory code starting with 7AC, this part is unavailable.
• These are old references kept for archive and not used nowadays.

Where can I find documentation (product sheet, installation manual, technical manual)?
On the Airwell documentation library via this link: http://lh.airwellres.com/

I have read the whole manual, I have searched the whole exploded view but I cannot find the spare part. What should I do?
You can call us at 01.76.21.82.95. The technical team will answer you with a smile!

TEL: +33 1 76 21 82 95
Monday to friday from 8am to 6pm

TECHNICAL SUPPORT

service@airwell.com

References

• Literature Hub
• Literature Hub
• Log-in - Airwell for Professionnals

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