in the 2003 Michigan boca code, section 607.2.3 states where a
thermostatic mixing valve is used in a system with a hot water
recirculatiing pump, the hot or tempered water return line shall be
routed to the cold water inlet pipe of the water heater and the cold
water inlet pipe or the hot water return connection of the
thermostatic mixing valve.
What I am asking is,
1. is a pressure balanced shower valve considered a thermostatic
mixing valve, requiring the recirc line to be connected to the hot
water inlet for the shower instead of a hot water lav line or the
furthest downstream hot connection?
2.can you no longer connect the recirc line down where the hot water
heater drain is connected? because that is how i've seen it done in
3.If you have two bathrooms on opposite sides of a house, can you run
two separate recirc return lines that join together at the water
heater and then are operated by one recirculation pump?
Any and all information is most appreciated, with Thanks in Advance.