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E. Connect the drain hose
1. Connect the drain hose assembly to the drain outlet with the 1 inch black rubber coupling.
Use a 5/16 inch nut driver (See Fig. 2).
2. Connect the other end of the drain hose to the building drain. See Fig. 5 for proper drain
connections. The drain installation must conform to local codes.
F. Connect the Vent Hose with Cuffs
1. Connect the Vent Hose with Cuffs to the HydroMiser assembly using the hose clamp, (incl. w/kit).
Tighten using a 5/16 inch nut driver (See Fig. 4).
2. Connect the other end of the Vent Hose with Cuffs to the building vent using a hose clamp (incl.
w/kit). Tighten using a 5/16 inch nut driver.
CHECK OUT PROCEDURE
1 Reconnect the power and turn on the water supply.
2. Close all HVE’s and SE’s and turn on the VacStar.
3. If leaks are present, turn off the unit and repair accordingly.
4. If no leaks are present, turn on the VacStar and set the eductor to recycle mode (See Fig. 3).
Note the reading on the vacuum gauge. Then, set the eductor to bypass mode. Note the reading
again on the vacuum gauge. If there is no more than 1 In Hg. difference between readings, the
HydroMiser has been installed successfully.
5. If the readings are not the same or widely different, review the installation. If the HydroMiser was installed
correctly, see the VacStar Service Technicians Manual, Trouble Shooting Guide, Low or No Suction.
D. Attach the Exhaust hose (See Fig. 6).
1. Screw the 1 inch MNPT end of the exhaust hose assembly
(incl. w/kit) into the exhaust manifold and tighten. This
fitting is pre-taped with Teflon tape.
2. Attach the other 3/4 inch Female Garden Hose Thread end
of the hose to the HydroMiser Assembly inlet and tighten.
3. If the exhaust hose is too long, cut it to the correct length
& attach supplied adapter fitting, reuse clamp.
VacStar is a trademark of Air Techniques, Inc.
© Copyright 2004 Air Techniques, inc.
PN 55377, Rev. D - November 2017
Air Techniques, Inc.
1295 Walt Whitman Road
Melville, New York, USA 11747- 3062
If the existing drain is higher
than the HydroMiser outlet,
the HydroMiser must be
mounted so that its outlet is
above the drain.
The HydroMiser can be
installed up to 32 inches
above the base of the
VacStar.
Order Kit PN 55087.
32 Inches
Maximum.
Power
Connection
HydroMiser
Eductor
(in back)
Intake from Main Line
Terminate with 1 inch FNPT fitting
Water Suppy 1/2”
copper tube termi-
nate with 1/2” FNPT
shut-off valve
WARNING:
Slope piping toward separator
to avoid accumulation of water
from condensation in vent.
Vent
Vent to outside with
2” schedule 40 pipe
Floor Sink
Note: See Optional Drain
Connections Bottom water system ¼ inch poly flow tubes
Exhaust
Hose
Vent Hose
with Cuffs
Fig. 5
¼ poly flow tube
Drain
Hose
½ poly flow tube
Swivel Fitting