Install Instructions

3
If the control will be the primary low
water fuel cut-off, size the steam (top) and
water (bottom) equalizing pipe lengths so
that the horizontal cast line on the body is
1 1/2” (38mm) below the boiler’s normal
water level, but not lower than the lowest
safe permissible water level, as deter-
mined by the boiler manufacturer.
OR
If the control will be the secondary low
water fuel cut-off, size the steam (top) and
water (bottom) equalizing pipe lengths so
that the horizontal cast line on the body is
at or above the lowest safe permissible
water level, as determined by the boiler
manufacturer.
STEP 1 - Determine the Position of the Low Water Cut-Off/Pump Controller
INSTALLATION –
TOOLS NEEDED:
Two (2) pipe wrenches, one (1) flathead screw
driver, and pipe thread dope.
IMPORTANT: Follow the boiler manufacturer's
instructions along with all applicable codes and
ordinances for piping, blow-down valve, water
gauge glass, tri-cock and electrical requirements.
1
1
/2"
STEAM EQUALIZING PIPE
VERTICAL EQUALIZING PIPE
BLOW DOWN VALVE
NORMAL BOILER WATER LINE
AS A PRIMARY
LOW WATER CUT-OFF/PUMP
CONTROLLER
BURNER “CUT-OFF LEVEL”
AT CAST LINE
LOWEST
PERMISSIBLE
WATER LEVEL
WATER
EQUALIZING
PIPE
STEAM EQUALIZING PIPE
VERTICAL EQUALIZING PIPE
BLOW DOWN VALVE
AS A SECONDARY
LOW WATER CUT-OFF/PUMP
CONTROLLER
BURNER “CUT-OFF LEVEL”
AT CAST LINE
LOWEST
PERMISSIBLE
WATER LEVEL
BURNER OFF
WATER
EQUALIZING
PIPE