"Hello Matt, ADT used to have one called a 6121. It had 3 stages to the pressure switch. 1st would only run the pump, 2nd would send a trouble signal if the pressure kept falling, 3rd was the waterflow signal. Used to set them about 40 PSI over the static.
We still have a Hydro pump with the same head on it in use. Friday, January 31, 2014, 11:56:49 AM, you wrote: > I ran across a system where the owner has elected to use a small > pump to pressurize the system in order to prevent municipal water > surges from causing false trips on the flow switch. Has anyone seen > this before? Are there any codes that address something like this? > (not something that we installed, or specified... just found it this way) > Matt Grisé PE*, LEED AP, NICET II > Sales Engineer > Alliance Fire Protection > 130 w 9th Ave. > North Kansas City, MO 64116 > *Licensed in KS & MO > 913.888.0647 ph > 913.888.0618 f > 913.927.0222 cell > www. AFPsprink.com > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org -- Best regards, Charles mailto:[email protected] _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
