We completed all of the items that we previously walked on the first day here. Turned the water off to the house and drain the water system. Next to the hot water heater there is a hole that was plugged going through the wood subfloor that accesses the crawlspace. We used that hole to run our half inch pex waterline. From in the garage I fed the half inch line through the whole while my apprentices were in the crawlspace pulling the pipe the length of the house all the way to the farthest hot water fixture and the guest bath. Then insulated the entire line and secured it to the floor joist all the way back to the hot water heater. Underneath the guest bathroom cut in a copper tee and pex adapter and attached the pex pipe to it. At the hot water heater assembled the isolation valves, recirc. pump and spring check valve with a boiler drain. After soldering this entire system together I mounted it to the wall with universal strut and secured it in place. Then attached the hot water pex re