172-65528A-01 (VS3-E/VS3-P/VS3-EP) 8 Jul 2015
6
Installation
DO NOT use for toxic, flammable or otherwise hazardous fluids.
This product is an air vent that discharges air from water piping systems.
Use only for water and/or air. This product is for intended use only.
Improper use may result in such hazards as damage to the product or
malfunctions that may lead to serious accident.
WARNING
Install properly and DO NOT use this product outside the recommended
operating pressure, temperature and other specification ranges.
Improper use may result in such hazards as damage to the product or
malfunctions which may lead to serious accidents. Local regulations
may restrict the use of this product to below the conditions quoted.
CAUTION
Take measures to prevent people from coming into direct contact with
product outlets. Failure to do so may result in burns or other injury from
the discharge of fluids.
CAUTION
Installation, inspection, maintenance, repairs, disassembly, adjustment and valve
opening/closing should be carried out only by trained maintenance personnel.
1. As this air vent is for the discharge of air from water-carrying pipes, it must
not be used for the discharge of air from steam spaces.
2. Before installation, be sure to remove all protective seals.
3. Before installing the product, open the inlet valve and blow out the inlet piping
to remove any piping scraps, dirt and oil. Close the inlet valve after blowdown.
4. This product must be installed vertically, with the inlet at the bottom and the
outlet at the top, and should be inclined no more than 5° horizontally and
front-to-back.
5. Install the product in a location where air is likely to
collect such as a
bend in the piping.
6. Install the product so that the outlet pipe reaches a
drainage vessel or ditch. Make sure the end of the
pipe is above the waterline, so that dirt and water
can not be sucked up by vacuum when the system
shuts down (Fig. 1).
7. For the inlet connection, use a pipe/fitting, etc. with an
inner diameter of at least 16 mm (
5
/
8
in
), such as a
schedule 40 pipe or pipe nipple with a nominal
diameter of 15 mm (
1
/
2
in). A smaller pipe may prevent
water/air displacement.
If there is a problem, determine the cause using the “Troubleshooting” section in this
manual.
Tolerance Angle for Installation - 5°
5
°
5
°
5
°
5
°
Make sure the air vent is installed with the raised
lettering on the body horizontal.
Fig. 1
