29
18)
Insert tube with ferrule into Calibration Gas Input Port (S4) on Feed-Through
Assembly. Move valco Nut down onto ferrule, screw into port and tighten.
NOTE:
Leak test ALL gas connections when completed.
XVII.
Vent Line Connections
The following procedure provides general steps for connecting the external Vent Lines
from the respective output ports on the Feed-Through Assembly. When the NGC is
installed in a Cold Weather Enclosure, vent lines MUST vent outside of the CWE. Other
installations may only require short lines. Please follow local codes during this
installation.
A. Materials
•
4 ea. 1/16” Ferrule and Nut
•
4 ea. 1/16” SST Vent Tubing (supplied with NGC) or
•
4 ea. 1/16” SST Tubing (Amount to be determined by technician based on
distance from NGC to external vent location).
B. Instructions
1)
Locate GPV (Gauge Port Vent), SV (Sample Vent), CV1 (Column Vent 1) and
CV2 (Column Vent 2) ports on NGC Feed-Through Assembly (see Figure
35). Remove sealing screws for vent ports.
Figure 35 Vent Line Connections on Feed-Through Assembly
2)
Using supplied Vent Tubing and Ferrule, place Nut and Ferrule onto short
end of bent tubing. Insert tubing, and ferrule into one of the vent ports being
careful to keep tubing horizontal, with open end of tubing pointing down.
Move valco Nut down onto ferrule, screw into port and tighten.
3)
Repeat Step 2 for ALL other vents as listed in Step 1.
