Xylem XL Series H-522 - Plus - Manual (Page 19)

XL™ Series
Hardware Options and Installation 2-5
2.2.3.2 Making the Pressure Connection to the H-355 Bubbler System (H-350XL only)
Figure 2-3 illustrates the correct procedure for installing the pressure port fittings between the
H-350XL™ and the H-355 Gas Purge System. Chapter 23 goes into more detail on the Gas Purge
System. Refer to the manual provided with the H-355 for installation information.
Connect the pressure input line between the H-350XL™ and the H-355 bubbler system using the
H-350XL™ Install kit, which includes all the required hardware. You will need a 1/8" NPT male
tubing fitting for the pressure input port. It is recommended that you use 1/8" copper tubing. The
proper ferrules must be used to insure there are no leaks. The male 1/8" NPT fitting screws into
the pressure input port of the H-350XL™ connector panel shown in Figure 2-1. On the bubbler
manifold you will need a corresponding tubing fitting. Generally, a 1/4" NPT female to 1/8"
tubing fitting is required. The NPT threads of these fittings need a coat of Teflon tape or
anaerobic thread dope. This helps in preventing leaks.
Figure 2-3. H-350XL / H-355 Combination Installation