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6
Water piping
WAR
NI
NG
•
Install water pipes according to
the regulations
of respective
countries.
•
Install water pipes in the freeze-free place.
•
M
ake sure that water pipes have
sufficient pressure re
sistance. The
design pressure is 1.0 MPa.
CAU
TI
ON
•
D
o
no
t use zinc plated water pipe
s.
When
steel pipes
are used,
insulate b
oth
e
nds
of the
pip
es.
•
C
opper pipes are recommended.
•
T
he water to be used must meet
th
e wate
r quality stand
ard specifi
ed
in EN directive 98/83 EC.
Water piping and line heater installation
•
M
ake th
e piping
rou
te a
c
losed
circuit. (An o
pen wate
r cir
c
u
it
may ca
use a fa
ilur
e.)
•
B
efore a lon
g
period o
f non
e use,
purge th
e water out
of th
e pipes a
nd th
oro
ughly let th
em d
ry.
Do n
o
t ad
d brine to
the circ
u
la
tin
g water.
•
D
o n
o
t use
the water use
d
for the
unit fo
r d
rinking o
r fo
od m
anuf
acturin
g.
•
T
o insu
re
easy ma
in
tenan
ce, inspection
, and
rep
la
c
eme
nt of t
he un
it
, use a
pro
per joint, valve, e
tc (p
rocu
red
locally)
on th
e wa
ter inlet an
d outlet
port.
•
B
e sure to insta
ll a
s
traine
r with 30
to 4
0
me
s
h
es (pro
cure
d locally
) on
the wate
r inlet
pipe. If
a strainer is
not
insta
lled
, this ma
y
c
a
use imp
a
ired
performa
nce, or da
mag
e to t
he plate
hea
t exchan
ger fro
m free
z
ing
.
•
Install
a suitable a
ir ven
t (p
rocu
red
locally) on
the water pipe
. Afte
r sen
d
ing water throu
gh th
e pipe,
be sure to
ven
t the
excess air.
•
T
o a
v
oid water leak, wra
p
som
e sealing t
ape a
rou
nd th
e scre
w p
a
rt
.
•
W
ater pipe
s
c
a
n get
very h
ot, de
pend
in
g on
the p
rese
t tem
per
atur
e. W
ra
p
the
wa
ter
pipes wit
h
hea
t insulation
(procured loca
lly)
to preven
t burns.
•
B
e
sure to in
stall the lin
e heate
r (p
rocu
red
locally) on the
water
inlet sid
e. In
a
d
dition, position it
within 5
m
of the
wate
r inlet
pipe of
the h
o
t water mo
dule.
•
F
ollow the
table be
lo
w t
o
select a line
heate
r (procured locally)
within th
e range
of 40
to 5
0
% of t
he ho
t wa
ter
m
odu
le
's rated
c
a
pacity.
Hot w
a
ter modu
le model name
C
apa
c
ity
of
li
ne
heater (kW
)
MM
W-
AP0271LQ-
E
3
.2~4.0
MM
W-
AP0561LQ-
E
6
.4~8.0
Pipe size, material and insulator
The
following
specification fo
r p
ip
in
g
wo
rk
a
nd insulating
process are procured locally.
M
odel MM
W-
AP027
AP05
6
Connec
ting pi
pe
(u
ni
t s
ide
)
Wa
ter
pipe
Inlet
R1-
1/4
Outl
et
R1-1/
4
Connec
ting pi
pe
s
m
aterial
C
o
pper pipes are rec
omm
ende
d
Insulator
Form
ed poly
ethy
len
e
foam
, thickn
ess:
10 m
m
or m
ore
Wat
er
out
let
R1
-1
/4
Ai
r v
ent
v
al
v
e
Is
ol
a
ti
n
g Val
v
e
Wa
te
r inle
t R1
-1
/4
St
ra
in
er
Cr
u
cia
l
he
a
te
r
s
o
u
rc
e
Pu
m
p
L
ine
H
eat
er
