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hi engineers what's the difference between remote chiller & centralized chiller ?

thanks, tomorrow this a tech. meeting with suppler ,I will high this points

hi engineers I have one A/C spilt precision unit (refrigerant type )for computer room what's the suitable fan should be used in indoor unit? cat loge that suppler show me its with EC centrifugal module-radipac see attachments please my question is this fan suitable with precision indoor...

thanks gentleman last meeting with suppler said , impossible to manufacture direct drive fan with the large air flow L/S 7950 SP 550 Pa?

thanks gentleman , my question is ,there limit for direct drive fan capacity ? is it available only for small air flow?

hello every one I have issue, 2 suppler providing exhaust fan with belt drive motor but the specification say its must be direct drive and thye tolled me according to big capacity we canot go through direct drive L/S 7950 SP 550 Pa? please advise thanks