SiUS30-1301
Features
General Information
7
1.4
Enhanced Usability
Centralized interlocking inp
u
t is
possi
b
le
u
sing an external control
adaptor (DTA104A62).
• Feat
u
res a p
u
mp interlock f
u
nction that
controls the p
u
mp of the heat so
u
rce
sim
u
ltaneo
u
sly
w
ith the starting of the
V
R
V
-
W
u
nit. This significantly
simplifies operation and management.
• Employs DIII-
N
ET to ena
b
le the shared
u
se of the
w
iring
b
et
w
een the indoor
u
nits, the
V
R
V
-
W
u
nit and the central
control
w
iring.
• Pro
v
ides an a
u
to address setting
f
u
nction and check f
u
nction that detects
connection errors in
w
iring and piping
for easier installation.
•
W
ater piping goes only to the
V
R
V
-
W
u
nit,
w
ith refrigerant piping r
u
n in
occ
u
pied spaces, making the system
ideal for installing in spaces s
u
ch as OA
rooms,
w
ith no
w
orry of
w
ater leakage
or corrosion.
DTA104A62
Interlockin
g
Control
w
iring
(external-to-external
transmission
w
iring)
By usin
g
1 external control
adaptor circuit board,
centralized interlockin
g
input
to multiple units within the
same water system is possible.
By adding s
u
ction gas piping and a Branch
Selector
u
nit (sold separately), sim
u
ltaneo
u
s
heating and cooling operation can
b
e pro
v
ided
b
y a single system.
Standard system
(heatin
g
and coolin
g
switchin
g
operation)
V
R
V
-
W
u
nit
Discharge gas piping
S
u
ction gas piping
Li
qu
id piping
Discharge gas piping
Li
qu
id piping
Indoor
u
nit
Indoor
u
nit
Indoor
u
nit
By addin
g
suction
g
as pipin
g
and a Branch Selector unit.
Energy sa
v
ing Heat Reco
v
ery operation!
Branch Selector
u
nit
Centralized interlockin
g
function
V
R
V
-
W
u
nit
Easily responds to simultaneous heatin
g
and coolin
g
needs.
A variety of functions that realize easy installation
and improve reliability
Simultaneous heatin
g
and coolin
g
operation system
Indoor
u
nit
(Heating)
Indoor
u
nit
(Cooling)
Indoor
u
nit
(Cooling Only)
Branch
Selector
u
nit
Branch
Selector
u
nit