Fujitsu UTY-VBGX Instruction Manual page 24

BACnet Gateway for VRF System
IMPORTANT
1.Write the Present_Value of each object in accordance with the limitation of the actual unit to be
controlled. If the value that are not within the permissible value of the corresponding unit is written,
BACnet Gateway assumes no guarantee on the actual operation of the unit. The range of values
specified for objects in this manual, does not reflect the limitation of various types of units that are
supported by this product. Refer to the manual of each unit, or other technical documents provided
for each product line-ups, for the permissible values of each unit.
2.All control signals such as Operation Mode Setting, Temperature Setting and FAN Speed Setting are
accepted when indoor unit is "ON".
3. BACnet Gateway for VRF System requires that the control packets (WriteProperty services) received
on the BACnet/IP side to be spaced with at least 300ms interval. The interval is required to transfer
the received packet from the high speed BACnet/IP side toward the low speed VRF system side. Not
doing so may result in loss of packets.
4.When BACnet Gateway is connected to single units thru Single Split Convertors (eg. UTY-VTGX),
certain restrictions apply, due to the limited features supported by the single split convertors.
See below.
Basic
Air flow direction
Room sensors
Filter sign status/reset
Restirictions
Economy saving
Outdoor low noise
operation
Error monitoring
Features
Operation on/off
Opertion mode
Setpoint
temperature
Fan
Vertical
Horizontal
Intake temperature
(R/C)
R/C prohibition
Temperature
setpoint limit
Outdoor capacity
save
Outdoor forced off
Forced thermo off
Error state, code
Copyright© 2021 Fujitsu General Limited - All rights reserved
INSTRUCTION MANUAL r1.4.0 eng
Availability Support by UTY-VTG*/UTY-VTG*V
When connecting to
2w R/C line
A A ok
A A ok
A A ok (in unit of
0.5deg)
A A ok
A A ok
A A ok
A NA not supported
A A ok
A A ok
A A not supported
A A not supported
A A not supported
A A not supported
A A not supported
A NA ok
When connecting to
3w R/C line
ok
ok
ok (in unit of 1deg)
ok
not supported
not supported
not supported
ok
ok (ON prohibit not
supported)
not supported
not supported
not supported
not supported
not supported
ok (5U.1 only for
some model)
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