Trane CenTraVac CDHH - Flange-Connection Adapters

32
CDHH-SVX003C-EN
Table 11. Water piping connection components
Unit Model
Unit Connection
Type
Customer Piping Connection
Victaulic
®
Flanged
CDHH
Flanged (optional)
Customer
provided
Victaulic
®
coupling
No adapter
required
CDHH
Victaulic
®
(all others)
Customer
provided
Victaulic
®
coupling
Trane provided
Victaulic
®
-to-
flange adapter
Figure 18. Customer piping connection types
Flanged Victaulic®
Waterbox
Waterbox
Customer
Flange Adaptor
Trane provided
Style 77 Flexible
Customer provided
Notes:
• Refer to the coupling manufacturer’s guidelines
for specific information concerning proper
piping system design and construction methods
for grooved water piping systems.
• Flexible coupling gaskets require proper
lubrication before installation to provide a good
seal. Refer to the coupling manufacturer’s
guidelines for proper lubricant type and
application.
Flange-connection Adapters
When flat-face flange connections are specified, flange-to-
groove adapters are provided (Victaulic® Style 741 for
150 psig [1034.2 kPaG] systems; Style 743 for 300 psig
[2068.4 kPaG] systems). The adapters are shipped
screwed to one of the chiller end-supports. Adapter
descriptions are given in the tables in “Victaulic Gasket
Installation,” p. 33. The flange adapters provide a direct,
rigid connection of flanged components to the grooved-pipe
chiller waterbox connections.
Figure 19. Typical shipping location for flange
In this case, the use of flexible type connectors (i.e.,
braided steel, elastomeric arch, etc.) are recommended to
attenuate vibration and prevent stress at the waterbox
connections.
All flange-to-flange assembly screws must be provided by
the installer. Hex head screw sizes and number required
are included in the tables in “Victaulic Gasket
Installation,” p. 33. The four draw-bolts needed for the
larger Style 741 (150 psig [1034.2 kPaG]) adapters are
provided. The Style 741 (150 psig [1034.2 kPaG]) flange
adapter requires a smooth, hard surface for a good seal.
Connection to other type flange faces (i.e., raised, serrated,
rubber, etc.) requires the use of a flange washer between
the faces. Refer to the flange adapter manufacturer’s
guidelines for specific information.
The flange-adapter gasket must be placed with the color-
coded lip on the pipe and the other lip facing the mating
flange.
NOTICE
Piping Connection Leaks!
Failure to provide effective seal could result in
equipment or property-only damage.
To provide effective seal, gasket contact surfaces of
adapter must be free of gouges, undulations or
deformities.
Figure 20. Modifying 300 psig (2068.4 kPaG) or 21 bar
flange adaptors for flat-faced flange application
Remove to mate
to flat-faced
flanges
Installation: Water Piping