Xylem IM102 R05 Jet Pumps - Manual (Page 5)

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any reason you must have fittings or filters between the
pump and tank and they cause switch chatter you should
move the pressure switch to the tank cross tee. Go To
“Install HydroPro Water Systems Tank” to Complete
Shallow Well Installation.
DEEP WELL TWIN PIPE – start here
Twin Pipe Suction Piping
A twin pipe jet assembly is used in wells 4" and larger.
Our 4" jet assemblies require a minimum 1¼" suction and
1" drive water pipe; 5" jets require a minimum 1½" suc-
tion and 1¼" drive water pipe. Use of smaller piping will
reduce performance in gpm and pressure. Offsets over
50' require larger pipes to reduce friction loss and
to obtain published performance.
Install Twin Pipe Jet Assembly
Check to make sure the nozzle is installed in
the jet assembly. Install the venturi tube in line
with the nozzle. On 4" jets attach the 1¼" suc-
tion and 1" pressure pipe to the jet assembly
female threads. On 5" jets the pipes should be
1½" and 1¼". Install a foot valve on the male
thread bottom port on the jet assembly or on
the end of a 34' tail pipe. The tail pipe prevents over
pumping a low yield well so the pump will not break
suction. See Tail Pipe in Technical Section.
Lower the jet assembly into the well. It should be set at
least 5' below the static water level. Keep the jet a few
feet off the well bottom to lessen the possibility of suck-
ing debris into the jet. The connections at the well head
can be either a pitless adapter or a well seal. Priming will
be easier if you fill the pipes with water before attaching
the pump.
Connect the suction and pressure pipes to the threaded
connections on the face of the pump. This can be done
using unions and threaded pipe nipples, or barbed con-
nectors with poly pipe. Always double clamp barbed
connectors. Make sure that the piping slopes upward to
the pump and that no point is above the pump suction.
On long offsets it is easier to prime the system if you fill
the pipes with water before connecting the pipes to the
pump. Go to Deep Well Discharge Piping.
DEEP WELL PACKER SYSTEM – start here
Packer Suction Piping
Packers use the area between the well casing
and the suction pipe as the drive water (pres-
sure) pipe. The 2" or 3" well casing must be
smooth and clean to insure a good seal with
the packer leathers or the system will leak and
not hold prime. The 2" packer requires 1¼"
threaded suction pipe and the 3" requires 1½".
On 2" packers only: Use the Goulds Water Technology
turned couplings part #64655 to connect the sections of
1¼" threaded pipe. This special diameter turned coupling
increases the clearance between the 2" well I.D. and the
O.D. of the coupling to allow the drive (pressure) water
to easily pass the couplings. Failure to use them will have
a negative impact on pump performance, both pressure
and gpm will decrease. The pump may easily lose prime
while pumping due to the restriction!
Using smaller than recommended pipe may reduce gpm
output. The longer the pipe the worse the affect.
Install Packer Assembly
To ease installation soak the 2" or 3" packer assembly in
warm water to make the leathers soft and pliable. DO
NOT lubricate them with grease, oil, or petroleum jelly!
The leathers must absorb water to seal the packer assem-
bly against the well casing.
Check to make sure the nozzle is installed in the jet
assembly. Install the venturi tube in line with the nozzle.
Install a strainer (not supplied with packer assembly) on
the bottom port of the packer assembly or on the end of
a 34' tail pipe. The tail pipe prevents over pumping a low
yield well so the pump will not break suction. Attach the
packer assembly to the suction pipes using the Goulds
Water Technology’ turned couplings to connect the
sections. Insert the packer assembly into the well casing
and push it down. Attach the other pipe sections as
you lower the jet into the well.
See Tail Pipe in Technical
Section.
Attach Suction Pipe To Packer Adapter
Packer systems always require a Packer Adapter at the
well head. The adapter makes the transition from vertical
to horizontal for horizontal pumps, and it connects verti-
cal pump casings to the well casing and suction pipe. See
the list of Packer Adapters/Pump Models to see which
one your pump system requires. See Chart 1 for a list of
Packer Adapters/Pump Models.
After the jet assembly is inserted into the well, attach
the Packer Adapter to the top of the suction pipe. Screw
the top section of 1¼" male threaded suction pipe or a
threaded adapter into the 1¼" NPT female threaded hole
in the 2" packer adapter or a 1½" suction pipe into the 3"
packer adapter.
Make sure that the O.D. of the well casing is free of dirt
and burrs. With the gland bolts loosened the tapered seal
ring on the packer adapter should slide over the well
casing. After insuring that it is in place tighten the two
gland nuts to compress the seal ring and seal it to the
well casing O.D.
Install the pump by attaching it to the Packer Adapter
using the bolts and gaskets provided. Vertical models use
studs and nuts for ease of assembly.
DEEP WELL DISCHARGE PIPING
All deep well jet pumps require back pressu-
re to operate the jet assembly. To insure we
have the required back pressure or drive water
pressure we must use a pressure control valve
or some type of flow restrictor in the discharge
line. The valve must be located between the
pump and the first discharge port. It is best
to locate it as close to the pump as possible. Failure to
install and adjust a pressure control valve will result in
loss of prime during peak usage such as filling a washing
machine, bathtub or using outside hose bibs.
All ½ hp pumps can use a simple gas cock or full port ball
valve, such as our AV15.
DEEP WELL DISCHARGE PIPING
DEEP WELL TWIN PIPE
DEEP WELL PACKER SYSTEM
Hazardous pressure can
cause personal injury or
property damage.
WARNING
Hazardous pressure can
cause personal injury or
property damage.
WARNING
Hazardous pressure can
cause personal injury or
property damage.
WARNING