28
CVHH-SVX001G-EN
Installation: Water Piping
Overview
The following water piping circuits must be installed
and connected to the chiller:
•
Pipe the evaporator into the chilled water circuit.
•
Pipe the condenser into the cooling tower water
circuit.
•
Optional:
A heat-recovery condenser water circuit.
•
Optional:
An auxiliary condenser water circuit.
N
No
otte
e:: Piping must be arranged and supported to avoid
stress on the equipment. It is strongly
recommended that the piping contractor does
not run pipe closer than 3 ft (0.9 m) minimum to
the equipment. This will allow for proper fit upon
arrival of the unit at the job site. Any adjustment
that is necessary can be made to the piping at
that time. Expenses that result from a failure to
follow this recommendation will NOT be paid by
Trane.
Piping suggestions for each of the water circuits listed
above are outlined in
. General recommendations for the
installation of field-supplied piping components (e.g.,
valves, flow switches, etc.) common to most chiller
water circuits are listed in the following sections.
Water Treatment
The use of untreated or improperly treated water in a
CenTraVac
™
chiller may result in inefficient operation
and possible tube damage.
IIm
mp
po
orrtta
an
ntt:: Trane strongly recommends using the
services of a qualified water treatment
specialist to determine necessary water
treatment. A label with a customer
disclaimer note is affixed to each unit.
N
NO
OT
TIIC
CE
E
P
Prro
op
pe
err W
Wa
atte
err T
Trre
ea
attm
me
en
ntt R
Re
eq
qu
uiirre
ed
d!!
T
Th
he
e u
usse
e o
off u
un
nttrre
ea
atte
ed
d o
orr iim
mp
prro
op
pe
errlly
y ttrre
ea
atte
ed
d w
wa
atte
err
cco
ou
ulld
d rre
essu
ulltt iin
n sscca
alliin
ng
g,, e
erro
ossiio
on
n,, cco
orrrro
ossiio
on
n,, a
allg
ga
ae
e o
orr
sslliim
me
e..
U
Usse
e tth
he
e sse
errv
viicce
ess o
off a
a q
qu
ua
alliiffiie
ed
d w
wa
atte
err ttrre
ea
attm
me
en
ntt
ssp
pe
ecciia
alliisstt tto
o d
de
ette
errm
miin
ne
e w
wh
ha
att w
wa
atte
err ttrre
ea
attm
me
en
ntt,, iiff
a
an
ny
y,, iiss rre
eq
qu
uiirre
ed
d.. T
Trra
an
ne
e a
assssu
um
me
ess n
no
o rre
essp
po
on
nssiib
biilliitty
y
ffo
orr e
eq
qu
uiip
pm
me
en
ntt ffa
aiillu
urre
ess w
wh
hiicch
h rre
essu
ulltt ffrro
om
m u
un
nttrre
ea
atte
ed
d
o
orr iim
mp
prro
op
pe
errlly
y ttrre
ea
atte
ed
d w
wa
atte
err,, o
orr ssa
alliin
ne
e o
orr b
brra
acckkiissh
h
w
wa
atte
err..
Pressure Gauges
Locate pressure gauge taps in a straight length of pipe.
Place each tap a minimum of one pipe diameter
downstream of any elbow, orifice, etc. For example, for
a 6 in. (16 cm) pipe, the tap would be at least 6 in. (16
cm) from any elbow, orifice, etc.
Valves—Drains and Vents
N
NO
OT
TIIC
CE
E
W
Wa
atte
errb
bo
ox
x D
Da
am
ma
ag
ge
e!!
F
Fa
aiillu
urre
e tto
o ffo
ollllo
ow
w iin
nssttrru
uccttiio
on
nss cco
ou
ulld
d rre
essu
ulltt iin
n
d
da
am
ma
ag
ge
e tto
o tth
he
e w
wa
atte
errb
bo
ox
x..
D
Do
o n
no
ott o
ov
ve
err--ttiig
gh
htte
en
n o
orr u
usse
e e
ex
xcce
essssiiv
ve
e T
Te
effllo
on
n®
® p
piip
pe
e
tta
ap
pe
e w
wh
he
en
n iin
nsstta
alllliin
ng
g v
va
allv
ve
ess,, d
drra
aiin
nss,, p
pllu
ug
gss a
an
nd
d
v
ve
en
nttss o
on
n w
wa
atte
errb
bo
ox
xe
ess..
1. Install field-supplied air vents and drain valves on
the waterboxes. Each waterbox is provided with a
National Pipe Thread Female (NPTF) vent and drain
connection; the openings are 3/4 in. (19.05 mm).
N
NO
OT
TIIC
CE
E
W
Wa
atte
errb
bo
ox
x D
Da
am
ma
ag
ge
e!!
F
Fa
aiillu
urre
e tto
o ffo
ollllo
ow
w iin
nssttrru
uccttiio
on
nss cco
ou
ulld
d rre
essu
ulltt iin
n
d
da
am
ma
ag
ge
e tto
o tth
he
e w
wa
atte
errb
bo
ox
x d
du
ue
e tto
o h
hy
yd
drro
osstta
attiicc
e
ex
xp
pa
an
nssiio
on
n..
IIn
nsstta
allll p
prre
essssu
urre
e--rre
elliie
eff v
va
allv
ve
ess iin
n tth
he
e cco
on
nd
de
en
nsse
err
a
an
nd
d e
ev
va
ap
po
orra
atto
orr w
wa
atte
err cciirrccu
uiittss..
2. If necessary for the application, install pressure-
relief valves at the drain connections on the
evaporator and condenser waterboxes. To do so,
add a tee with the relief valve attached to the drain
valve. Follow local codes for determining if drain
connection is large enough for relief devices.
To determine whether or not pressure relief valves
are needed for a specific application, keep in mind
that:
a. Vessels with close-coupled shutoff valves may
cause high potentially damaging hydrostatic
pressures as fluid temperature rises.
b. Relief valves are required by American Society
of Mechanical Engineers (ASME) codes when
the waterside is ASME. Follow ASME guidelines
or other applicable codes/local regulation to
ensure proper relief valve installation.
Strainers
N
NO
OT
TIIC
CE
E
W
Wa
atte
err B
Bo
orrn
n D
De
eb
brriiss!!
T
To
o p
prre
ev
ve
en
ntt cco
om
mp
po
on
ne
en
nttss d
da
am
ma
ag
ge
e,, p
piip
pe
e ssttrra
aiin
ne
errss
m
mu
usstt b
be
e iin
nsstta
alllle
ed
d iin
n tth
he
e w
wa
atte
err ssu
up
pp
plliie
ess tto
o p
prro
otte
ecctt
cco
om
mp
po
on
ne
en
nttss ffrro
om
m w
wa
atte
err b
bo
orrn
n d
de
eb
brriiss.. T
Trra
an
ne
e iiss n
no
ott
rre
essp
po
on
nssiib
blle
e ffo
orr e
eq
qu
uiip
pm
me
en
ntt--o
on
nlly
y--d
da
am
ma
ag
ge
e cca
au
usse
ed
d
b
by
y w
wa
atte
err b
bo
orrn
n d
de
eb
brriiss..
Содержание CVHH CenTraVac
Страница 126: ...126 CVHH SVX001G EN N No ot te es s ...
Страница 127: ...CVHH SVX001G EN 127 N No ot te es s ...