DX Type Fresh Air Handling Unit | DX-FAHU | HVAC in Urdu/Hindi

This is a practical HVAC video about "DX Type Fresh Air Handling Unit/ DX-FAHU/ DX system/ DX package units/ DX FAHU/ Treated FAHU/ DX-FAHU on BMS / FAHU working" in Urdu/Hindi language. Explained FAHU in detail regarding the Direct Expansion FAHU concept, working principle, parts, etc. Watch this video learning point of view. It is basic learning information about FAHU. It is also important for HVAC/MEP technical staff. Here sharing my experience and knowledge that will be helpful about learn & grow for Engineers & Technical staff. If you found anything which is inappropriate then convey it in the comments for my information and rectification in the future.
00:00 Introduction
00:37 What is a DX-FAHU unit?
02:11 Condensate unit and evaporator unit
02:39 Pre-treated FAHU
02:50 How DX FAHU works?
04:35 Sand trap louver of FAHU unit
05:04 FAHU Mixing box
05:49 FAHU Duct connection
06:09 FAHU Casing detail
07:27 FAHU Internal parts
07:54 Louver and VCD
09:22 What is a mixing box?
10:38 FAHU filter box
11:46 FAHU DX-Coil box
12:33 FAHU fan box
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[@TanweerAhmed]

Treated fresh air handling unit: kzbin.info/www/bejne/gouYqJ5jd5mKlc0

[@technicalhelp9769]

Allah ap k ilam ma or izzfa kary Ameen😍😍

[@TanweerAhmed]

Thanks brother 😊

[@facilitymanegmentmepengine341]

kzbin.info/www/bejne/sHbZdmmgpqmMoMU

[@Anonymous_110]

Getting lots of value from thjs channel. .thanks a lot

[@TanweerAhmed]

MashaAllah

[@fahadraja218]

Bahut badhia Aapne video banaya hai jazakAllah

[@TanweerAhmed]

Thank you

[@designdraftingservices1950]

I'm getting a lot knowledge from your valuable videos

[@TanweerAhmed]

That's good

[@nawajali8369]

Ham ko bhi kam ki talas hai H B A C ka 7292855241 Nawaj Ali

[@nawajali8369]

Good morning sir mera naam nawaj ali hai ham ko H B A C ka karna hai or ham hyedarabad se cors kiye hai 7292855241 I miss job

[@gyaanyeww5197]

you have done fantastic job ...i was searching for latest dx chiller n i found here ..lots of love from karnataka ..india ..keep sharing latest equipment details ...thank you

[@TanweerAhmed]

Welcome

[@shahamathahmed]

Luv d way u have explained Sir .. Crystal clear NGL 👌

[@TanweerAhmed]

Thanks

[@HyderAli-qv4fq]

Salute to you.. you are wonderful teacher

[@TanweerAhmed]

Thanks a lot

[@mohamedali-ur7op]

Thanks your concern to share your knowledge

[@TanweerAhmed]

Welcome

[@abduljabbaransari8462]

Bohat aala nice work

[@TanweerAhmed]

Thanks dear

[@Dilshadkhankolkata]

Thanku so much bhaijan bahot acche tarika se btate hai aap😊😊

[@TanweerAhmed]

Welcome brother

[@syedfaiyaz3762]

Ma sha Allah, Allah aapko aur tarakhi de

[@TanweerAhmed]

Thanks dear

[@rukhsar07]

Nicely described with clerifications.

[@TanweerAhmed]

Thanks

[@muhammadans5951]

My lovely teacher Super hero engineer U r great

[@TanweerAhmed]

Thanks

[@durgab.k.2051]

Thank you for the nice video!

[@TanweerAhmed]

Welcome

[@venkatarr]

wonderful video. well explained.

[@TanweerAhmed]

Thank you

[@KNOWLEDGEIQ]

May Allah Blesses you good health,I saw your right hand covered with Plaster of Paris,I think Be safe and Delived knowledge .this tutorial with schematic are really good way to Expalnation.Thanks alot for such a great job.

[@TanweerAhmed]

Thanks dear, due to accident, my hand injured. Now it is ok

[@KNOWLEDGEIQ]

@@TanweerAhmed Thanks Allah.

[@TanweerAhmed]

Jazakallah

[@SanaKhan-xd5zo]

@@TanweerAhmed ❤❤

[@kumarrishikesh6843]

Very Nice bro.Allah aap ko madad kare.

[@TanweerAhmed]

Thanks

[@alisher9528]

Knowledgeable

[@hvac707]

Sir my request is to u please make a video on duct testing practically How to find out practically Like - static pressure, velocity pressure, and cfm

[@TanweerAhmed]

insha'Allah....I will make soon

[@rameezraja7778]

Great defined Brother

[@TanweerAhmed]

Thanks

[@mohdsiddiquequreshi9054]

Learning practical knowledge thank you

[@TanweerAhmed]

Welcome

[@mohdsiddiquequreshi9054]

@@TanweerAhmed aap kaha se ho sir

[@sahidmalek652]

Thank you sir for this information

[@TanweerAhmed]

Welcome

[@raidon948]

very nice practical explaination

[@TanweerAhmed]

Thanks

[@horizonparvez3612]

Great job sir.

[@TanweerAhmed]

Thanks

[@abdulnabi7912]

Keep it up...good

[@ssraorao7565]

Excellent your are great 👏

[@TanweerAhmed]

Thank you so much 😀

[@fidamuhammad6542]

A good informative video.

[@TanweerAhmed]

JazakaAllah

[@user-vm3np2tt9u]

Tanweer Ahmed Good work keep it

[@TanweerAhmed]

Thanks

[@alihaidar8724]

Thanku so much sir for this information.😍

[@TanweerAhmed]

welcome

[@facilitymanegmentmepengine341]

kzbin.info/www/bejne/oJSxfn6Bf55ofaM

[@kishanbhargava6890]

Explained clearly👍

[@TanweerAhmed]

Thanks

[@SAHILALI-nr9st]

It's really good information

[@TanweerAhmed]

Thanks

[@fahadraja218]

Masha Allah bahut acha

[@TanweerAhmed]

Thanks

[@chrisshine3953]

Thank you Sir!!!

[@TanweerAhmed]

Most welcome!

[@minhaj897]

Nice explanation sir

[@TanweerAhmed]

Thank you

[@muhammadusmangujjar5437]

ماشاءالله تبارك الله

[@TanweerAhmed]

Thanks

[@gongagaming3352]

Great 👍

[@TanweerAhmed]

Thanks

[@ArshdeepSingh-wb4du]

Thanking sir ji

[@TanweerAhmed]

Welcome

[@designdraftingservices1950]

My super teacher you are great

[@TanweerAhmed]

Thanks

[@rahulrajbhar7918]

Bahut achcha aapane bataya sar

[@TanweerAhmed]

Thank you

[@villagemedia8594]

Thank you sir

[@TanweerAhmed]

So nice of you

[@akramhussain6501]

Great job sir I am BMS operator but I know about plumbing basic HVAC.

[@TanweerAhmed]

Welcome

[@akramhussain6501]

I m in UAE if you have job for me please inform me 🙏

[@TanweerAhmed]

Sure

[@irshadqureshi3596]

Very good enformatiom

[@TanweerAhmed]

Thank you

[@MohammadDanish-yf5ro]

Excellent bro

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[@hoshsethar6698]

Good knowledge

[@TanweerAhmed]

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[@naveedakhtar2979]

Excellent

[@TanweerAhmed]

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[@fahadraja218]

Nice explain

[@TanweerAhmed]

Thanks for like

[@NAsarkar-yq7yq]

Thank you sir🤲🤲🤲

[@TanweerAhmed]

Welcome

[@NAsarkar-yq7yq]

@@TanweerAhmed call me sir 9939375114

[@fahadraja218]

Very nice

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[@mohammedjaberasim8259]

Good sir

[@TanweerAhmed]

Thank you

[@khansalahuddin8986]

Sir aap ke bms me fault chaq kaise krte hai uska mentaince kaise krte hai iska vedio de

[@TanweerAhmed]

Ok noted

[@hvac707]

Nice video sir

[@TanweerAhmed]

Thank you

[@MRKROLEX786]

Good video

[@TanweerAhmed]

Thanks

[@hvacengineerhvacengineer6101]

Weldon sir

[@TanweerAhmed]

Thanks

[@armanraja8363]

Thanks boss

[@TanweerAhmed]

Welcome

[@armanraja8363]

VRV, VRF ka video banao Sir

[@TanweerAhmed]

I am working on VRV or VRF video, it will be soon ready.... insha'Allah

[@The-hvac-life-of-Dubai-1997]

Nice

[@TanweerAhmed]

Thanks

[@danishakram9831]

Sir please make videos package unit control and wiring of Dunhum bush company

[@TanweerAhmed]

Ok noted

[@piyushpandey6303]

v good

[@TanweerAhmed]

Thanks Piyush

[@lovesongsandbabytvchannel8898]

Hi may i request for english sub title? Because some of us watching your because cannot understand your language. Highly appreciate if you do that. Because I know, you can share many informations regarding to HVAC System.Thank you..

[@TanweerAhmed]

Ok I will do....soon

[@jamsheerali7229]

Hi sir .. shall we consider supply fan static pressure for designing sand trap louver ?

[@TanweerAhmed]

I am not design Engineer but I think, it should be consider

[@tajammulhussainKhadir]

Acha ye batao vrv outdoor unit se ahu ko jo refrigerants (supply and return ) line jaati hai uspe motorized valve and temperature sensor lagte hain ya nahi?

[@TanweerAhmed]

This video is not related VRV. No motorized valve is used in VRV as I know. Temperature sensors are used.

[@mdshamimhossen1541]

❤️❤️❤️

[@TanweerAhmed]

❤️

[@ahsanayyaz6310]

nice

[@TanweerAhmed]

Thanks

[@nse08]

@13:50 fan reverse rotation, a bit fun ! Why do dirty inside fan compartment ?

[@TanweerAhmed]

In video you feeling like this but practically rotating in right direction. Practically record roof fan video then you will feel like same. You should focus on the content, not on house keeping.

[@RajendarKumar-di7qn]

Good

[@TanweerAhmed]

Thanks

[@awaheedshaikh4962]

What is difference between Dx type and VrF ac units. Please share immediately for interview

[@TanweerAhmed]

Single split DX type unit run constantly and VRF type units are variable according to load. VRF units are also DX type. VRF units are energy saving and DX are not energy saving

[@shahamathahmed]

Subscribed

[@TanweerAhmed]

Welcome

[@mohdviquar5875]

Sir FAHU me blower suction side par casing lagi hui hai toh woh suction kaha se karega aagey cool air ko discharge karne ke liye

[@TanweerAhmed]

Explained in this video

[@muzaffershaik8336]

Sir It’s is acceptable DOAS return duct connected to toilets(restrooms) to suck return air frm toilets(restroom) please clarify?

[@TanweerAhmed]

What is DOAS?

[@ajaxtyson]

Sir Kitne condenser dx unit chahiye ye kaise decide hota he? Agar area ke upar hota he to ek dx unit kitna area cover karta he? Thank you.

[@TanweerAhmed]

You will not understand without proper design. It is not simple. Get help from designer

[@ajaxtyson]

Sir, aapne jo video me AHU bataya usska CFM capacity kya he?

[@TanweerAhmed]

I have not memorized. But different according to area and conditions wise

[@jamsheerali7229]

Sir .. why we are using bleed fan for DX fahu? What is inertial filter ?

[@TanweerAhmed]

I have not seen any bleed fan installation for DX FAHU. Bleed fan are used for industrial environmental purpose or in aeroplane. Inertial filters are also used mostly for industrial filtration purpose.

[@jafaragharia8560]

Good information. FAHU minimum kitne ton ka hota hai

[@TanweerAhmed]

I think 4 to 5 tons

[@muhammadimranusman8404]

As slam u alaikm sir please answer me very fast ,diploma Mera hvac me he aur b.tech electrical me he halnkey mechanical me krna tha ab me Kya karu.

[@TanweerAhmed]

W.Salam

[@praveenpoojary6024]

York DX unit system showing flow switch open . Condensing unit going to off plz give suggestion

[@TanweerAhmed]

There is problem which should be trace out practically. May be switch faculty

[@mozammilimam7880]

AHU me Air pressure switch kyun use krte hain?

[@TanweerAhmed]

Air pressure switches is a device used to actuate an electric switch based on differential pressure across two points and this electric switch used to sense airflow status across the fans, dirty status across the filters in air handling unit or it can be used to connect any control circuit to perform the required operation when switching condition goes on and off

[@gulabrbbani2261]

FAHU or AHU ME difference samajh me aaraha hai Sir..but treated fresher air handling unit nahi samajh pa raha hu.

[@TanweerAhmed]

Treated fresh air handling unit may jo fresh air 100% supply ki jatey hy usay treat kiya jata hay. Is ka matlab ye hay ka, fresh air ko cool kya jata hay, ya humity control ki jati hay, ya heat kiya jata hay, etc.

[@gulabrbbani2261]

@@TanweerAhmed thank you sir

[@jamsheerali7229]

Hi sir .. what is steam type built in humidifier in AHU ,,, is it for humidification or de-humidification ? Please advise in detail

[@TanweerAhmed]

It is used for Humidification if steam used as mist and used for Dehumidification if steam used in coil for heating purpose.

[@jamsheerali7229]

@@TanweerAhmed it can use both humidification and de humidification ? Through DDC ?

[@TanweerAhmed]

My answer is same, further check at your end

[@HaniRao-gk6iw]

Sir, package unit pr video bna dejay

[@TanweerAhmed]

Ok noted

[@jamsheerali7229]

Thank u sir.. Can u please explain testing and commissioning of AHU accu , checklists etc…

[@TanweerAhmed]

Welcome, Insha'Allah will explain

[@jamsheerali7229]

@@TanweerAhmed thank you sir .. is it mandatory to insulate all the refrigerant pipes ( eg: liquid lines, HOt gas bypas) ???

[@TanweerAhmed]

Yes it is

[@jamsheerali7229]

@@TanweerAhmed why it is needed? AHU and accu are in out side of building..

[@TanweerAhmed]

Because ambient temperature and refrigerant or chilled water temperature is different therefore heat transfer and energy loss

[@abidrazashakeb8457]

One query sir kindly solve the problem, in FAHU system both condenser & evaporator are connected to each other in one box ?

[@TanweerAhmed]

This is called package unit like window AC unit

[@abidrazashakeb8457]

Basically sir mujhe information chahye Dx FAHU & simple FAHU details ..

[@TanweerAhmed]

Simple FAHU is without coil and treated FAHU is with coil

[@shujauddinmalik502]

Sir can we run 3phase fresh air unit by single phase supply

[@TanweerAhmed]

No

[@raushankumarsharma725]

sir, How to connection between AHU and ACCU unit from start to end including of foundation (concrete pad) please make One video

[@TanweerAhmed]

Ok noted

[@alalmolla3725]

Sar dunham bush ahu ma Ferzz poraction alarm comprasar off ata ha plees ansar me

[@TanweerAhmed]

Practically to be check compressor and their control system. Moreover, there are more than one compressor and they run all on full load. If load is partial then may be one compressor start and other remain off.

[@sankarrama8430]

Sir ahu aur fahu me kya anter hoti hai plz esper video banaeeye

[@TanweerAhmed]

Ok noted....but simply difference is that FAHU take 100% fresh air & supply to condition room and AHU take some % fresh air & 80% to 90% return air from room then supply to condition room.

[@anupamsingh6657]

Please provide in metro undercroft spray nozzle k factor 22 clause

[@TanweerAhmed]

What do you want to ask?

[@vishwanathkchavan1739]

Dear sir why we use rutrn air duct

[@TanweerAhmed]

Return air ducts in AHUs play a crucial role in maintaining indoor air quality, energy efficiency, and comfortable conditions within a building. They allow the HVAC system to efficiently recirculate and condition air, leading to better control over temperature, humidity, and overall indoor environment.

[@sashidhar3025]

Sir . Here in dx coil doesn't have chill supply and return line

[@TanweerAhmed]

DX coil no required chilled water

[@sashidhar3025]

@@TanweerAhmed ok sir .Sir can u give vedio of chill water supply and return pump room vedio

[@TanweerAhmed]

Ok noted

[@nadeemmallick7453]

And sir make a video of hru fahu with full specification

[@TanweerAhmed]

Ok noted

[@afwmrepairentertainment2432]

assalamuialikum sir 44 umar hai meri aur experience bhi hai gulf ki liye hvac technician ki liye job 44 umar walu ko abhi job offfers hair sir please bataiye sir

[@TanweerAhmed]

If you are interested then avail this opportunity

[@waqarjaved6642]

Please also guide about electric Load according to the size of ac

[@TanweerAhmed]

Normally electrical load taken from different vendors catalogues of AC units

[@waqarjaved6642]

@@TanweerAhmed sir i want to instal this system in my school

[@TanweerAhmed]

@@waqarjaved6642 Before installing designing is required. If you will start designing process from designer then you will find out all parameters

[@waqarjaved6642]

@@TanweerAhmed sir I am totally blind about it do you have any contacts who can do this all for me

[@TanweerAhmed]

Do you want to design HVAC system? If yes then share email address for further coordination

[@ZeeShawn]

Silencer bhi laga Hota hai duct m

[@TanweerAhmed]

It is called acoustic liner or sound liner which reduce the noise of duct

[@ZeeShawn]

sound attenuator is use in fresh air duct or EAD Sound attenuator we can also say silencer

[@MohammadDanish-yf5ro]

Sir plz tell me how to set point of this chiller db.plzz

[@TanweerAhmed]

Temperature can set through its panel screen. Only technical person set parameters because if any thing insert wrong then chiller can problem

[@Mdirfan-tf8hb]

Bhai return air supply ke bare mein aap kuchh nahin bataya ?

[@TanweerAhmed]

This is treated 100% Fresh Air Unit and therefore no return fresh is used

[@jamirkhan1137]

Iska maintenance me kaya karne parta hain bhai jaan

[@TanweerAhmed]

Monitoring, control & cleaning etc.

[@shaukathayat1083]

Good Video. Sir FAHU total kitney types k hotey hain?

[@TanweerAhmed]

Basic two type i.e. (1) Treated fresh air (2) Non treated fresh air.

[@TanweerAhmed]

In treated fresh air has further clarification i.e. 1st DX coil and 2nd Chiller water coil

[@shaukathayat1083]

Tanweer Ahmed thanks 🙏

[@TanweerAhmed]

Non treated fresh air is that which is supply without cooling or without treat, means atmosphere air

[@TanweerAhmed]

@Design Hub yes, you are right

[@abujarhossen2160]

FAHU connect with chillers?

[@TanweerAhmed]

Yes

[@haseekhas1102]

Sir thank you this video but I need this wiring system please

[@TanweerAhmed]

Which type wiring, share detail ?

[@rakeshkumar-iv5pe]

Hello sir I am a cold storage chilling plant operator can I learn about HVAC system please guide me

[@TanweerAhmed]

Yes you can learn

[@rakeshkumar-iv5pe]

How it possible please guide me

[@rameezkhan7697]

Is mey expansion valve arey hy??

[@TanweerAhmed]

Yes