AERMEC NRB 0282 Series, Installation And Maintenance Manual

Page: 43 / 56

43
internal and external hydraulic circuit
nrB w2-w4 (with douBle PuMP + storaGe tanK + VariaBle sPeed inVerter)
1
3
2 2
5
4
6
7 7
8
8
9
10
11
3
10
6
12
13
14
10
15
16
P
T
P
T
17 17
9 9
18 18
PTD PTD
M
19
W
ARNING!
Mak
e sure the sy
st
em
has a
n ade
qu
at
e n
umb
er
of t
erminals with 3-
w
ay
val
ves
, t
o gu
ar
ant
ee a
t
least the minim
um w
at
er
fl ow
ra
te
.
COMPONENT
S PR
O
VIDED AS ST
AND
ARD
i
nternal and external hydraulic circuit
nrB w2-w4 ( WITH DOUBLE APUMP + STORAGE TANK + VARIABLE SPEED INVERTER)
D
o not fi
ll up the h
ydr
aulic sy
st
em b
y gl
yc
ol nea
r the suc
tion of the pump
.
High c
onc
entr
ation of gl
yc
ol c
ould stuck the pump
. D
o not use the pump t
o
mix w
at
er a
nd gl
yc
ol
COMPONENT
S PR
O
VIDED AS ST
AND
ARD
1
Pla
te hea
t e
xchanger
2
W
at
er t
emper
atur
e sensors
3
An
tifr
eez
e elec
tric hea
ter (standar
d in the hea
t e
xchanger and st
or
age tank)
4
Diff
er
en
tial pr
essur
e tr
ansduc
er
5
W
at
er fi
lt
er
6
Air v
en
t v
alv
e
7
One w
ay v
alv
e
8
Pump
9
Cut
-off v
alv
e
10
Dr
ain v
alv
e
11
Sy
st
em buff
er tank
12
Expansion T
ank
13
Saf
et
y v
alv
e
14
Pr
essur
e gauges
15
Flo
w swit
ch
16
M
ot
or
ized b
y-pass v
alv
e
17
Pr
essur
e tr
ansduc
er
HY
DR
AULIC C
OMPONENT
S REC
OMMENDED EX
TERNAL
TO UNIT
(RESPONSIBILIT
Y OF
THE INST
ALLER)
18
An
ti-
vibr
ation join
ts
19
Aut
oma
tic
Filling V
alv
e
9
Cut
-off v
alv
e