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Heat Exchanger from Refrigeration Rack
Here is what I have: Flatplate C5AG Heat Exchanger, R404A Side A (refrigeration side) & 50% Prop. Glycol on Side B (heating side). Pressure Drop of 9 ft/head.
Modine HSB258 Unit Heater (2 piped in parallel -1 in a 57F room & 1 in a 36F room) on the glycol side Pressure Drop of 5.7 ft/head.
400' of 1" type M copper pipe. (which should have been larger)
Grundfos UP26-116F pump (which is to small)
I am not get the heat out of the HSB as I need. Currently the glycol temp. out of the flatplate is between 95-105F. The glycol temp back to the flatplate is 81-85F
I am thinking that I will need to bring the GPM up. Am I right?