Installation: Water Piping
CVHH-SVX001A-EN
27
Three-pass waterboxes have lifting lugs on the top and
bottom . When reinstalling, ensure that the waterbox is
oriented the sam e way it as rem oved.
Grooved Pipe Coupling
A custom er-supplied, standard flexible grooved pipe
coupling (Victaulic Style 77 or equivalent) should be used
to com plete the Victaulic connection for both 1034.2 kPag
or 150 psig and 2068.4 kPag or 300 psig waterboxes.
When a flexible coupling such as this is installed at the
waterbox connections, other flexible piping connectors
(i.e., braided-steel, elastom eric arch, etc.) are usually not
required to attenuate vibration and/or prevent stress on
the connections.
•
Refer to the coupling m anufacturer ’s guidelines for
specific inform ation concerning proper piping system
design and construction m ethods for grooved water
piping system s.
•
Flexible coupling gaskets require proper lubrication
before installation to provide a good seal. Refer to the
coupling m anufacturer ’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
1034.2 kPag or 150 psig system s; Style 743 for 2068.4 kPag
or 300 psig system s). The adapters are shipped bolted to
one of the chiller end-supports. Adapter descriptions are
given in
Table 6, p. 28
and
Table 7, p. 28
. The flange
adapters provide a direct, rigid connection of flanged
com ponents to the grooved-pipe chiller waterbox
connections.
In this case, the use of flexible type connectors (i.e.,
braided steel, elastom eric arch, etc.) are recom m ended to
attenuate vibration and prevent stress at the waterbox
connections. Flange adapters are not provided for CVHH
units w ith 2068.4 kPa or 300 psig waterboxes that have
356 m m (14 in.) and larger piping connections.
All flange-to-flange assem bly bolts m ust be provided by
the installer. Bolt sizes and num ber required are given in
Table 6, p. 28
and
Table 7, p. 28
. The four draw-bolts
needed for the 355.6 m m (14 in.) and larger Style 741
(1034.2 kPag or 150 psig) adapters are provided. The
Style 741, 1034.2 kPag or 150 psig flange adapter requires
a sm ooth, hard surface for a good seal.
Connection to other type flange faces (i.e., raised, serrated,
rubber, etc.) w ill require the use of a flange washer
betw een the faces. Refer to the flange adapter
m anufacturer ’s guidelines for specific inform ation.
The Style 743 (2068.4 kPa or 300 psig) flange adapters are
designed to m ate w ith raised-face flanges. They can be
used w ith flat-faced flanges; how ever, only if the raised
projections on the outside face of the adapter are
rem oved; see
Figure 17
. The flange-adapter gasket m ust
be placed w ith the color-coded lip on the pipe and the other
lip facing the m ating flange.
Table 5.
Water piping connection components
Cu st om e r Pip in g Con n e ct ion
U n it M od e l
Un it Con n e ct ion
Ty pe
V ict a u lic
Fla n g e d
CVHH
Flanged ( Condenser
032–050 150 psig
[ 1034.2 k Pag] non-
m ar ine only )
Cust om er
pr ov ided
Vict aulic coupling
No adapt er
requir ed
CVHH
Vict aulic ( All ot her s)
Trane pr ovided
Vict aulic- t o-
flange adapt er
Figure 15.
Customer piping connection types
Water Box
Flange Adaptor
Trane Provided
Fla n ge d
Wat erbox
Flange Adapt or
Trane pr ov ided
Water Box
Style 77 Flexible
Customer Provided
Customer
V ict a u lic
Wat er box
St yle 77 Flex ible
Cust om er pr ov ided
Cust om er
Figure 16.
Typical shipping location for 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.
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