Hi Bill,
Jersey was cold! Workshop there went well. I would go with the extra pump package and split up the runs to the tower. This stategy will allow you to still dispense product if one pump went down. Remember, ten product conduit has two glycol loops and when you specify the power pack use actual length plus half. Actual length is distance between walk in cooler and tower. With 50 faucets / five towers and actual distance possibly 40', this equates to 200' run plus half -100'. Specify a chiller for 300' and have one pump circulate three runs and the other two. You may have to limit yourself to 40 faucets at four locations if you would like to utilize the 250' unit.
Scott Zuhse, Instructor
Micro Matic Dispense Institute