... in 4 groups: FN, FNC, FNS and FNV. The air flow of them all is flowing out by side except FNV ... , which is top blowing. All the products have been ... tested on 2.8MPa air leakage, and the system is disposed of pollution, applicable to R22R134aR404AR407C systems. ... install Series name Air Cooled Condensers for refrigeration condensing units