The Polaris MiniJet for vinyl liner pools (FFMJ-VL) is
designed to mount in a vinyl pool wall slightly above
water level. It can be mounted in wall panels with a
thickness of .1094” (12Ga. Steel) to 3/8” (polymer
wall). For deck installations, use the standard Polaris
MiniJet (FFMJ).
Preparing For Installation
Determine the mean water level of the pool and
the vertical center line of each MiniJet. If water
covers the nozzle, the performance will be affected.
Mounting it too high may interfere with the coping
and liner installation.
Pressure testing is required. Screw the 3/8” plug
provided into the nozzle inlet of the MiniJet housing.
This plug is also used for winterizing, so do not
discard.
Store the brass jets, the MiniJet housing cover, the
3/8” plug and the four screws for pool start-up.
Prevent dirt and debris from entering the plumbing
lines during construction.
Installing The MiniJet
1. Position the Layout Template to line up with the
vertical center line and mean water level. Tape it to
the pool wall.
2. Use a 1/4” bit to drill fourteen (14) mounting holes.
3. Use a 3/8” bit to drill the four (4) corner holes used
as guides for cutting out the center square.
4. Use a jigsaw and blade compatible with the
material of the pool wall to cut out the center
square, cutting around the outer edges of the four
(4) holes.
5. Insert the MiniJet housing through the wall from
the water side. Rest the back of the housing flange
against the inside of the pool wall.
6. Position the rear mounting plate over the back of
the MiniJet housing on the outside of the pool wall.
Insert the two (2) pan-head screws in the center
holes (top and bottom) of the flange, through the
pool wall and into the rear mounting plate. Secure
housing to pool wall.
MiniJet® for Vinyl Liner
Pool Installation
Plumbing The MiniJet
Water flow and pressure control the projection of the
water. As a rule, 4.4 GPM per nozzle will provide
adequate water flow. Refer to data below.
MiniJet Performance Data Chart
Height of
Jet Spray 3.3’ 6.6’ 9.8’ 13.1’
Feet
of Head 3.9’ 7.9’ 11.9’ 16.0’
GPM 2.1 3.0 3.7 4.4
1. Determine the size of the manifold or plumbing
loop and return pipe required.
MiniJet Pipe Sizing
Max.
MiniJets
Return
Pipe Sizing
Suction
Pipe Size
8 1-1/2” 1-1/2”
12 2” 2”
16 2-1/2” 2-1/2”
26 3” 3”
2. Use 1/2” PVC pipe to connect the MiniJet to the
manifold or plumbing loop. See plumbing diagram
below.
Optional
Loop
Extend Past Last
MiniJet 5' Minimum
MiniJet
Manifold Pipe
Valve
Riser
From
Pump
See Chart for
Proper Sizing
3. When the MiniJets are lined up to project water
streams of equal distance, cut the riser to equal
lengths. When the MiniJets are not set in lines
parallel to the pool ledge, valve each MiniJet
separately.
