Help me out here.
Walk in freezer 27x15x9'3"
Kolpak box built in 2006 - insulated floor - combination box (so one 15' wall has +40F exterior temp) - one standard entry door. Walk-in is inside the building.
Desired temp -5F to -10F at the coldest.
14,000 Btuh evap coil
SBFE-B-ZP TXV (1.25 to 2.0 Ton if I remember correctly)
CF12K6E-TF5-270 (230V 3P - 12,000 and change capacity @ -20F and +95F R404A)
Compressor working it's guts out. 26 psig and 270 psig with a box temp of +10F. Superheat +21F (Valve opened full open - suspect it won't feed more due to MOP feature)
I called United today en route to a service call and had them run the calcs on the box. They told me 13,500 for infiltration load and another 9,000 for product load (@ -10F box).
I haven't looked into it in greater detail at this point, but all indications are the equipment is significantly undersized for the box. This thing was installed less than a year ago and compressor is DOA.
Can someone be that far off on load calcs - or do you think I'm just missing something?
Kinda vague - just thought I'd throw it out there before doing my own homework