sophocles

the multifamily building in Portland where i live has utility room trap primers. the traps serve the a/c and furnace and are also fed by a usage-based trap primer. in winter and summer (assuming folks are home), those systems will keep the trap sealed. but some drains have been clogged by debris, and the floor drains back up. agree that testing the primer by monitoring water flow into the trap is necessary, since we cant know whether the trap is full due to condensate or priming.