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Boiler1, I may be getting the wrong end of the stick here....Assuming of course the correct pumps are installed and the pipe sizes are correct can the pump not be moved so that the cooling tower is on the supply side of the pumps and install a pressurisation unit on the suction side of the...

Hi dkm0038,.....I do hope I dont sound like im teaching you to suck eggs but here goes. If I have got this correct you have the hot supply bucket elevated and the cooler return bucket lowered with the exchanger in the middle. If you have two gauges of the same type, one on the supply and one...

Hi montgomerysj, I would personally always put the Balancing Valves in the return. The methodology behind this will be that this keeps the system behind the valve under pressure. This keeps air in suspention and coils and terminal units flooded. The moment the pressure drops the air will be...

Hi HVAC68, I have attached an extract from the CIBSE Design Specification for DX Air Conditioning Equipment in Buildings. Table 29. If you didnt know already the table shows HCFC22, this is R22. Regards...