Carrier service manual R410a DC Inverter 60Hz
General Information 3
The fluctuation range of motor rotor speed is within ±5 rpm and the motor can rapidly match the output of
DC inverter compressor. The efficiency is enhanced under
part load.
1.1.3 Newly designed sub-cooling heat exchanger
12°C sub-cooling degree makes the cooling capacity
increased efficiently. Innovative designed outdoor high
efficiency heat exchanger can reach up to 12°C sub-cooling
degree one time, reduces the system resistance and
improves reliability.
1.2 More flexible design
1.2.1 Wide capacity range
The outdoor units capacity range from 8HP to 72HP in 2HP increment. Maximum 64 indoor units with
capacity up to 130% of total outdoor units can be connected in one refrigeration system. Indoor units
consist of 11 types with more than 100 models, capacity range from 1.8kW to 45kW.
1.2.2 Wide operation range
The V4+ S series system operates stably at extreme temperatures ranging from -20°C(-4℉) to 48°C(118.4℉)
1.2.3 Flexible piping design
*The farthest equivalent pipe length should be equal to or shorter than 40m, but it can be up to 90m if meet the required conditions following part
4 installation sections.
System pressure
DC inverter stepless
adjustment
AC inverter
multistep adjustment
OutdoorTemperature
0 10 20 30 40
5
0-10-20
HEATING MODE
48°C
27°C
-5°C
(23°F)
(-4°F) (14°F) (32°F) (50°F) (68°F) (86°F) (104°F) (122°F)
(80.6°F)
OutdoorTemperature
Piping length Permitted value
Total pipe length 3280ft(1000m)
Max. actual pipe length 574ft(175m)
Max. equivalent pipe length 656ft(200m)
Equivalent length of pipe from
the first branch to the farthest
indoor unit
(131/295*) ft /(40/90*)m
Level difference between
outdoor unit and indoor unit
Outdoor unit is down: 361ft(110m)
Outdoor unit is up: 230ft(70m)
Level difference between
indoor units
98ft(30m)
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