Toshiba TCB-IFDA1GUL Installation Manual page 11

Digital input /
Analogue input wiring
Digital output wiring
■Refrigerant piping design
•Allowable length/height difference of refrigerant piping
Total extension (Liquid pipe, Actual length)
Furthest piping length (L)
Furthest equivalent piping length from the first
branching section (Li)
Furthest equivalent piping length between outdoor units (LO)
Pipe
length
Main piping
length
Maximum equivalent length of outdoor unit connecting pipe
Maximum actual length of pipes connected to indoor units
Maximum equivalent length between branching sections
Height between outdoor and
indoor units H1
Height
difference
Height between indoor unit (H2)
Height between outdoor units (H3)
Maximum equivalent length indoor units in group control by one
single port Flow Selector unit (Ln)
FS unit
connection Maximum real length between Flow
(SHRM-e Selector unit and indoor unit
only)
Height difference between indoor units in group control by one
Flow Selector unit (H4)
PMV (pulse motor valve) wiring
Outdoor unit
Piping specification items
Equivalent length
Actual length
Equivalent
length
H2 > 9.8ft
Actual
length
Equivalent
length
H2 =<9.8ft
Actual
length
H2 > 9.8ft
H2 =< 9.8ft
(*1) Follow the piping design specification of outdoor units.
(More than 8ton)
H1 > 9.8ft
H1 =< 9.8ft
Below 432kBtu/h
432kBtu/h or more
Below 432kBtu/h
432kBtu/h or more
Below 432kBtu/h
432kBtu/h or more
Below 432kBtu/h
432kBtu/h or more
Upper outdoor units
Lower outdoor units
Upper outdoor units
Lower outdoor units
Upper outdoor units
Lower outdoor units
Single port type
Multi port type
10
Communication wring
(U1/U2, A/B)
Power supply
wiring (L1/L2/G)
SMMS-e
SMMS-e
SHRM-e
Dx-Interface Dx-Interface
connection connection
(8ton or less)
656ft (200m)
427ft (130m)
394ft (120m)
131ft (40m)
213ft (65m)
(*1)
(*1)
(*1)
(*1)
(*1)
(*1)
Standard VRF
(*1) outdoor unit
piping limitations
(*1)
based on model
(*1)
selection apply
(*1)
66ft (20m)
98ft (30m)
131ft (40m)
(*1)
131ft (40m)
(*1)
(*1)
(*1)
(*1)
(*1)
Standard VRF
outdoor unit
(*1)
piping limitations
(*1)
based on model
selection apply
(*1)