i have an evacuated tube array heating a hydronic floor and heating an endless pool. the circulators are operated by a tekmar 157 controller. The 157 basically turns off and on 2 pumps based on setpoints set by user. here is what i am trying to do. when the storage temp falls below a set point and the panels have heat, pump 1 is activated until either the panels cool off too much or the storage max is achieved. the tekmar sends 120 v to pump 1. i want to run that leg through a relay to both start the pump AND close a set of contacts on an ice cube relay to go through a taco zvc 406 zone valve controller to open the zone valve to the panels. I have an idec rr2pu ice cube relay but cannot understand the wiring diagram. a note: the tekmar is varying the spped of the pump based on the difference in storage and panel temp. can someone help me out with this? thank you very much.