CVHE-SVX005B-EN
33
Figure 12.
ifm efector
®
®
flow sensing device terminal
connection
7
N
NO
OT
TIIC
CE
E
P
Prro
oo
off o
off F
Fllo
ow
w S
Sw
wiittcch
h!!
F
Fa
aiillu
urre
e tto
o p
prro
ov
viid
de
e ffllo
ow
w ssw
wiittcch
he
ess o
orr jju
um
mp
piin
ng
g--o
ou
utt o
off
ssw
wiittcch
he
ess cco
ou
ulld
d rre
essu
ulltt iin
n sse
ev
ve
erre
e e
eq
qu
uiip
pm
me
en
ntt
d
da
am
ma
ag
ge
e..
E
Ev
va
ap
po
orra
atto
orr a
an
nd
d cco
on
nd
de
en
nsse
err w
wa
atte
err cciirrccu
uiittss rre
eq
qu
uiirre
e
p
prro
oo
off o
off ffllo
ow
w ssw
wiittcch
he
ess..
••
F
Fa
aiillu
urre
e tto
o iin
nccllu
ud
de
e tth
he
e p
prro
oo
off o
off ffllo
ow
w d
de
ev
viicce
ess a
an
nd
d//
o
orr jju
um
mp
piin
ng
g o
ou
utt tth
he
esse
e d
de
ev
viicce
ess cco
ou
ulld
d cca
au
usse
e tth
he
e u
un
niitt
tto
o sstto
op
p o
on
n a
a sse
ecco
on
nd
da
arry
y lle
ev
ve
ell o
off p
prro
otte
eccttiio
on
n..
••
F
Frre
eq
qu
ue
en
ntt ccy
ycclliin
ng
g o
on
n tth
he
esse
e h
hiig
gh
he
err lle
ev
ve
ell
d
diia
ag
gn
no
ossttiicc d
de
ev
viicce
ess cco
ou
ulld
d cca
au
usse
e e
ex
xcce
essssiiv
ve
e tth
he
errm
ma
all
a
an
nd
d p
prre
essssu
urre
e ccy
ycclliin
ng
g o
off u
un
niitt cco
om
mp
po
on
ne
en
nttss ((O
O--rriin
ng
gss,,
g
ga
asskke
ettss,, sse
en
nsso
orrss,, m
mo
otto
orrss,, cco
on
nttrro
ollss,, e
ettcc..)) a
an
nd
d//o
orr
ffrre
ee
ezze
e d
da
am
ma
ag
ge
e,, rre
essu
ullttiin
ng
g iin
n p
prre
em
ma
attu
urre
e ffa
aiillu
urre
e o
off
tth
he
e cch
hiilllle
err..
Evaporator and condenser proof of flow switches
(either flow or Delta-P) are required as shown on wiring
diagrams. These switches are used with control logic to
confirm flow prior to starting a unit and to stop a
running unit if flow is lost. For troubleshooting, a
viewable diagnostic is generated if a proof of flow
switch does not close when flow is required.
Evaporator and Condenser
Water Piping
The following two figures illustrate the recommended
(typical) water piping arrangements for the evaporator
and condenser.
Figure 13.
Typical evaporator water piping circuit
4
4
5
5
3
3
7
2
2
1
9
6
2
2
8
Outlet
Inlet
1. Balancing valve.
2. Gate (Isolation) valve or ball valve.
3. Thermometer (if field supplied).
4. Waterbox nozzle connection.
5. Drain, vent, and anode.
6. Strainer.
7. Chilled water flow switch (5S1). Flow switch 5S1
may be installed in either the entering or leaving leg
of the chilled water circuit.
8. Pump.
9. Pressure gauge. It is recommended to pipe the
gauge between entering and leaving pipes. A
shutoff valve on each side of the gauge allows the
operator to read either entering or leaving water
pressure.
Figure 14.
Typical condenser water piping circuits
1
2
3
4
5
6
7
8
9
2
3
4
5
2
2
10
Outlet
Inlet
1. Balancing valve.
2. Gate (isolation) valve or ball valve.
3. Thermometer (if field supplied).
4. Waterbox nozzle connection.
5. Drain, vent, and anode.
6. Strainer.
7. Condenser water flow switch (5S2). Flow switch
5S2 may be installed in either the entering or
leaving leg of the chilled water circuit.
8. Three-way valve (optional).
9. Condenser water pump.
10. Pressure gauge. It is recommended to pipe a single
gauge between entering and leaving pipes.
