5
II. InSTALLATIOn
1. Installation of the Vaporizer
The VPH-10000 is supplied completely assembled. The user should install the vaporizer in a
location that has at least 12 ft. (3.65 m) of space from floor to ceiling. A lifting crane should also be
available at the location and should have a minimum lifting capacity of 2 tons. Additional overhead
space should be factored in for the lifting crane. The lifting crane can be used to connect to the two
1" eyebolts located on the top flange to remove the pressure chamber or move the entire vaporizer
assembly. To access the eyebolts the user must remove the fiberglass cabinet. Once in position, the
vaporizer should be bolted to the floor by the use of four,
5
⁄
8
" concrete anchor bolts through the bottom
plate. If installing multiple vaporizers, Hydro Instruments recommends leaving at least 2 feet of
clearance space between each vaporizer for ease of access.
If using automatic water control, a ½" water pipeline should be installed to the water solenoid valve.
The water should have a minimum supply pressure of 15 psi (1 bar) and not to exceed 60 psi (4 bar).
Drain ports from the vaporizer consist of a 1.5" drain valve, a 1¼" water overflow pipe; a 1¼" vent
pipe, and a ½" water heater drain. For convenience all drain pipes are located on rear side of the unit
and must be plumbed on site.
Inlet and outlet connections to the vaporizer are made through 1" NPT ammonia type unions. The
inlet connection is made through the center of the top flange. Improper installation of the inlet and
outlet piping can lead to serious malfunction of the unit and possible personal injury. The liquid
chlorine inlet port is on the center of the top flange and the chlorine gas outlet port is off center. For
added convenience, the ports are also stamped “IN” for the liquid inlet and “OUT” for the gas outlet.
2. Installation of Chlorine Pressure Piping
Connections to the vaporizer are made through the use of 1" ammonia type unions. Chlorine pressure
piping should be made of seamless schedule 80 carbon steel, and fittings must be 3000 lb. forged type.
For more information on chlorine pressure piping and vaporizer piping design tips please see Chlorine
Institute’s pamphlet 6 and Hydro Instruments’ Vaporizer Piping Guide EVP-002-CL2.
3. Installation of Auxiliary Components
3.1 Electronic Pressure Reducing Valve
The electronic pressure reducing valve is an integral part of any vaporizer system. The electronic
pressure reducing valve is the device that will stop chemical feed in the event of an alarm condition.
This will prevent liquid chemical from contacting and damaging downstream equipment.
Hydro Instruments vaporizer allows the user to install two electronic pressure reducing valves into
the main controller. One for operation, and the other for standy-by which can be switched to using
the main controller (see Section III.5). The electronic pressure reducing valve must be installed
downstream of the vaporizer, after the pressure relief valve assembly and filter but before the vacuum
regulator. Available in either 120 VAC or 240 VAC single phase power, the hot wire (black) should be
wired into N.O. 1 (CB-8RELAY) and the neutral wire (white) should be wired into the neutral bar in
the relay connections box, with the green wire going to ground. If using a second electronic pressure
reducing valve use N.O. 5 (CB-8RELAY). Ensure that power is disconnected from the vaporizer
before installation. Further information is available through Hydro Instruments’ electronic pressure
reducing valve instruction manual.
