SylvanLMP
These purge balance valves are completely redundant to the zone valves. Open
them
wide and forget about it. The heat is controlled by the thermostats opening
and closing the zone valves. The balance valves would only be useful if it
were a single
zone system with one thermostat. Frankly you could have removed them, the
only thing
nice is the purge feature if you have to drain the system for some reason.
