If you were going to replace a 50 ton Carrier 30GB for an apartment complex with smaller air cooled condensers and chiller barrels, pumps controls etc..
How would you go about sizing the new systems.
The chilled water coils are 40 year old, do I match the coil load.
Example: Of one zone
Existing 9- 2 ton coils and 6- 9000 btuh coils. = 22 1/2 ton
How would you size the new replacement barrel.
Thanks for the help