Elkhart Brass 299-20XHC-N7/4 Monitor - Manual (Page 2)

Revised 8/20/2010 2 EB98175000_Rev. B
INSTALLATION INSTRUCTIONS
1 .0 In sta llin g Mo n ito r a n d No zzle:
1.1 Bolt the monitor to standpipe, terminated with 4" - 150# Flat Face ASA flange base.
1.2 Standpipe must be structurally strong enough to withstand reaction force of nozzle when
discharging a straight stream at 90º of the standpipe or tower. The formula for calculating
nozzle reaction is: REACTION FORCE = 0.0505 x G.P.M. x √¯P.S.I.
1.3 Inlet pressure at base of monitor must be high enough to allow for pressure Lose through
monitor. To accomplish this, use friction loss for G.P.M. flowing, from friction loss chart and
add to nozzle pressure. (See chart below).
1.4 After Modular Monitor is installed on standpipe, open Valve & Pump Box door and remove
yellow cap from pump reservoir. Remove rubber disc from inside of cap and replace it with
breather filter supplied in zip-loc bag attached to hydraulic pump. Replace cap on reservoir.
294-11XBHC Monitor (4” Inlet and 2.5” Outlet)
299-20XHC Monitor (4” Inlet and 3.5” Outlet)