VPS Installation Vapor Vent Stack Installation - Wired VPS
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Vapor Vent Stack Installation - Wired VPS
Installation of the VPS on the vapor vent stack is only allowed at facilities equipped with a
Veeder-Root Vapor Polisher or Franklin Fueling System Healy Clean Air Separator.
1. Before installing this device, perform all required safety procedures to gain access inside the vapor vent
stack.
2. The VPS is installed in the vent line for the tank/tanks being monitored.
3. Locate a suitable port in an existing Schedule 40 piping fitting (tee, cross, etc.) or plumb a suitable Schedule
40 pipe fitting (tee, cross, etc.) into the vapor vent stack line (maximum length of copper tubing limited by
dimension in Figure 10).
4. Install the VPS (item 1 in Table 2) vertically onto the center of the composite panel (item 3 in Table 2) using a
2-inch conduit clamp, rubber shim, and necessary bolts, nuts, and washers included in the kit. Be sure the
symbol on the panel is facing upwards (see Figure 11). Wrap the rubber shim (item 22 in Table 2) around
the sensor before inserting it into the clamp. Also make sure the VPS cable outlet is facing up and the
pressure sensing port tube in the base of the VPS is facing down. Locate the VPS in the clamp, but leave the
conduit clamp screw somewhat loose for later height adjustment.
5. Install two169CA-4-4 male elbows (item 4 in Table 2) into each end of the 3-way calibration valve (item 11 in
Table 2) as shown (see Figure 11).
6. Install one 68CA-4-4 male connector (item 5 in Table 2) into the center port of the 3-way calibration valve,
and then directly attach it to the VPS inlet port (see Figure 7).
7. Screw the 59CA-4 plug (item 6 in Table 2) onto the left port’s male elbow (see Figure 11).
8. Install the two plastic enclosure mounting plates to the back of the enclosure. Use the four short flat-head
screws included in the enclosure hardware bag.
9. Install the composite panel into the enclosure (item 2 in Table 2) such that the VPS cable outlet is facing up
and the pressure sensing port tube in the base of the sensor is facing down. The symbol on the panel
should be facing upward. Use the four short screws included in the enclosure hardware bag.
10. Make sure that the white flanged porous vent (factory installed - item 17 in Table 2) is still securely installed
into the hole in the bottom of the enclosure (see Figure 11).
11. Insert the S-bend ¼" OD copper tube (item 9 in Table 2) into the right-side male elbow of the 3-way
calibration valve, but do not fully tighten the compression nut (see Figure 11).
12. Locate the 62CABH-4 bulkhead union (item 7 in Table 2) and remove the compression nut and the
adjustable nut then place a large washer (item 8 in Table 2) against the fixed, integral body nut. Slide the
compression nut that was removed onto the bottom portion of the S-bend tube.
13. Partially insert the bulkhead union into the bottom center hole in the enclosure. Slide a large washer over the
body, and thread the adjustable nut back onto the body.
14. Insert the bottom portion of the S-bend tube into the bulkhead union and fully tighten the bulkhead union
adjustable nut against the large washer and enclosure wall. Adjust the VPS vertically in the shim/ conduit
clamp to make sure the S-bend tube is fully inserted into the union and male elbow.
15. Fully tighten the compression nuts to connect the S-bend tube to the union and to the male elbow. Tighten
the sensor conduit clamp screw to secure the sensor in its final vertical position (see Figure 11).
16. Mount the plastic enclosure onto the vapor vent stack or suitable rigid structure ABOVE the vapor vent stack
port using two conduit clamps (for 2" or 3" pipe), bolts, nuts, and washers included, or use other customer
supplied suitable mounting hardware (Example: Unistrut®). Leave the mounting hardware somewhat loose for
later enclosure height adjustment (see Figure 10).
17. Measure, fabricate, and install customer supplied pipe and pipe fittings between the vapor vent stack port
and within a few inches of the bulkhead union in the bottom of the enclosure.
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