I have two 3 doors coolers
each one have a tstat and liquid line solonoid.
manufacture recomends 1800 btu on each box
thats a total of 3600 btu.
My question is how do i calculate the long run of line to the
5/8 suction line approx 40 ft rise to ceiling tile, another 50feet run in
the ceiling then another 4-5 ft rise to the condensing unit to the roof.
How do you calculate the aditional btu needed for the additional line set?