Brochure

Space saving design
» More than 60% in physical space savings versus a traditional
cube style outdoor unit
» More than 80% in total (including clearances) space savings
versus a traditional cube style outdoor unit
FDXS/CDXS
FFQ
FVXS
CTXS/FTXS
FTXR
FTXR
RMXS
CTXS/FTXS
BPMKS
BPMKS
BPMKS
FDMQ
Longer refrigerant piping
Longer refrigerant piping capabilities offers much more flexibility in the choice of installation positions for the
indoor units, and greatly simplifies system layout.
BPMKS
» Branch Provider Unit
» Varies the refrigerant
volume to meet the
cooling or heating
requirements of
each room connected to the system.
» Facilitates zone on/off and capacity
control to operate rooms individually
via zone temperature controls
» Simple installation with flare
nut connections
REFNET joint
» Reduces the amount of work involved in
installation and increases the reliability
of the system.
Piping Requirements Allowable Length Details
Maximum
allowable
length
Between outdoor and BP units
Total piping
length
Piping length between outdoor and BP units ≤ 180 ft (55 m) - [Example] a+b+c+d+e ≤ 180 ft
Between BP and indoor units Piping length between BP and indoor units: 262 ft (80 m) - [Example] f+g+h+i+j+k+l ≤ 262ft
Between BP and indoor unit 1 room length Piping length between BP and indoor unit ≤ 49 ft (15 m) - [Example] f, g, h, i, j, k, l ≤ 49 ft
Allowable
height
Between outdoor and indoor units
Difference
in height
Difference in height between outdoor and indoor units (H1) ≤ 98 ft (30 m)
Between outdoor and BP units Difference in height between outdoor and BP units (H2) ≤ 98 ft (30 m)
Between BP and BP units Difference in height between BP and BP units (H3) ≤ 49 ft (15 m)
Between indoor and indoor units Difference in height between indoor and indoor units (H4) ≤ 49 ft (15 m)
Minimum allowable length Piping length
Pipe length between outdoor unit and first refrigerant branch kit (refnet joint) ≥ 16.4 ft
[Example] a ≥ 16.4 ft
Allowable length after the REFNET branch
Piping length from first refrigerant branch kit (REFNET joint) to indoor unit ≤ 131 ft (40 m)
[Example] unit 6: b+c+k ≤ 131 ft [Example] unit 5: b+e+j ≤ 131 ft [Example] unit 3: d+h ≤ 131 ft
Additional refrigerant calculation
R=
Total length (ft/m)
of liquid piping size at
ø 3/8 inch (ø 9.5 mm)
x
0.036 lb./ft
(0.054 kg/m)
+
Total length (ft/m)
of liquid piping size at
ø 1/4 inch (ø 6.4 mm)
a
1 2
BP
BP
3
4 5
6
d
f g
h
i j
k
e
b c
H1
H4
H2
H3
A
1
2
BP
3
B
7
REFNET Joint