Main
p
art explanation:
No
.
M
ai
n
P
a
rt Nam
e
S
p
eci
fi
cati
o
n
F
o
r w
h
at p
u
rp
o
se?
1
H
ea
te
r
220V
, 35W
Heat
up t
he c
om
pres
so
r w
hen s
ys
tem
s
tops
to
av
oi
d l
iqui
d c
om
pres
si
ng and
li
qui
d f
lood-bac
k
2
C
om
pre
ss
or
DC
in
ve
rt
er
Dr
iv
e
the
sy
st
em
t
o rea
liz
e
the re
fr
ig
er
ant
c
irc
ul
at
io
n
3
T
d
sen
sor
50
K
W
(
80°C
)
F
or
ta
rget
S
H
c
on
trol
and h
igh d
is
charge
te
m
p
e
ra
tu
re pro
te
ct
ion
4
H
P s
w
itc
h
4.
5 /
3.
7M
pa
Cut
of
f t
he s
ys
tem
w
hen di
sc
harge pre
ss
ure i
s t
oo hi
gh t
o prot
ec
t s
ys
tem
5
4-W
A
Y
v
al
ve
/
Cool
ing /
heat
ing s
w
tic
hi
ng
6
T
oci
s
en
sor
10
K
W
(25
°C)
F
or
ta
rget
s
uper h
ea
ting
con
trol
w
hen
hea
tin
g
7
T
c
sen
sor
10K
W
(25°C)
F
or h
igh pre
ss
ure/
f
requen
cy
/ ou
tdoor
fan
speed
con
trol
w
hen
coo
lin
g
8
T
ao
s
en
sor
23
K
W
(25°C)
F
or
ta
rget
f
requency
range and hea
ter
con
trol
9
T
e
sen
sor
10K
W
(25°C)
F
or de
fro
st
opera
tion and
lo
w
pre
ss
ure
c
on
trol
w
hen hea
tin
g
10
P
M
V
s
1.
5m
m
, 500P
LS
Ref
rigerant
di
st
ribu
tioi
n and t
arget
S
H
(c
ool
ing) and S
C
(h
eat
in
g) c
ont
rol
11
LP
s
w
itc
h
0.
05 /
0.
15M
pa
Cut
of
f t
he s
ys
tem
w
hen s
uc
tion pres
su
re i
s t
oo l
ow
or s
ys
tem
s
eri
ous
leak
ag
e t
o prot
ec
t s
ys
tem
12
A
ccum
ul
at
or
1.
5L
S
eparat
e t
he l
iqui
d ref
rigerant
and gas
ref
rigerant
in
s
uc
tion l
ine t
o av
oi
d l
iq
ui
d f
lood-bac
k
13
T
s
sen
sor
10K
W
(25°C)
T
o
ca
lc
ul
at
e
the
ta
rget
S
H
and
S
C
, a
nd
con
trol
t
he
st
art
u
p of
the
co
m
pre
ss
or
14
T
c2
10K
W
(25°C)
T
o
ca
lc
ul
at
e
the r
eal
s
uper hea
ting
va
lue
toge
ther
w
ith
T
out
t
o opera
te
the P
M
V
s,
fo
r
ta
rget
co
m
pres
so
r f
reque
nc
y c
ont
rol
and l
ow
pres
su
re prot
ec
tio
n w
hen c
ool
in
g
15
T
m
10K
W
(25°C)
T
o
ca
lc
ul
at
e
the r
eal
s
uper
coo
ling
va
lue
toge
ther
w
ith
T
in
to
opera
te
the
P
M
V
s,
f
or
ta
rget
c
om
pre
ss
or
fr
equenc
y c
ont
rol
a
nd hi
gh pres
su
re cont
rol
w
hen heat
in
g
16
T
c1
10K
W
(25°C)
T
o
ca
lc
ul
at
e
the r
eal
s
uper hea
ting
va
lue
toge
ther
w
ith
T
in
to
opera
te
th
e
P
M
V
s
17
T
ai
23K
W
(25°C)
T
o
ca
lc
ul
at
e
the
te
m
pera
ture d
iff
erence be
tw
een
the
in
le
t and ou
tle
t of
the
in
door un
it
to
c
on
tr
ol
t
he
ta
rget
f
requen
cy
a
nd
T
H
E
R
M
O
. O
N
o
r
O
F
F
.
-53
-
Содержание HCNL 821 XMR
Страница 2: ... 2 ...
Страница 76: ...12 2 Circuit diagram Outdoor Unit HCNL 821 XMR PCB layout 76 ...
Страница 78: ... 78 12 4 Circuit diagram Indoor Units HTFL 261 351 411 531 XMR ...