30
HDWA-SVX001D-EN
maintain the correct baffle arrangements. Use a new
gasket with each waterbox cover.
Reversing Waterboxes
All waterboxes can be reversed end-for-end. Refer to
for detailed waterbox
removal instructions.
Remove sensors from wells before removing
waterbox.
Do NOT rotate waterboxes.
Complete the waterbox switch and replace sensors.
N
No
otte
ess::
•
If waterboxes are reversed, be sure to
properly rewire water temperature sensors
in the control panel.
•
Be sure to replace waterboxes right-side-up
to maintain proper baffle orientation. Use
new O-rings.
•
if the waterbox is revered, be sure to match
mark on the baffle and the waterbox to
ensure they are aligned.
Grooved Pipe Coupling
A customer-supplied, standard flexible grooved pipe
coupling (Victaulic
®
Style 77 or equivalent) should be
used to complete the Victaulic
®
connection for both
150 psig (1034.2 kPaG) and 300 psig (2068.4 kPaG)
waterboxes.
When a flexible coupling such as this is installed at the
waterbox connections, other flexible piping connectors
(i.e., braided-steel, elastomeric arch, etc.) are not
usually required to attenuate vibration and/or prevent
stress on the connections.
Figure 19.
Customer piping connection types
Flanged
Victaulic®
Waterbox
Waterbox
Customer
Flange Adaptor
Trane provided
Style 77 Flexible
Customer provided
N
No
otte
ess::
•
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
N
NO
OT
TIIC
CE
E
N
Ne
ev
ve
err W
We
elld
d tto
o C
Ca
asstt B
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ox
xe
ess!!
W
We
elld
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ng
g tto
o cca
asstt b
bo
ox
xe
ess w
wiillll rre
essu
ulltt iin
n e
eq
qu
uiip
pm
me
en
ntt
d
da
am
ma
ag
ge
e..
A
Ad
da
ap
ptte
errss m
mu
usstt b
be
e u
usse
ed
d tto
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on
nv
ve
errtt fflla
an
ng
ge
ess..
When flat-face flange connections are specified, flange-
to-groove adapters are provided (Victaulic
®
Style 741 ,
150 psig [1034.2 kPaG]). The adapters are shipped in
spare parts box included with the unit. Adapter
descriptions are given in the tables in
. The flange adapters provide a
direct, rigid connection of flanged components to the
grooved-pipe chiller waterbox connections.
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
. 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.
