Carrier X-POWER Series Service Manual page 101

Carrier service manual R410a DC Inverter 60Hz
Before install the air deflector, please ensuring the mesh enclosure has been took off; otherwise the air
supply efficiency would be block down.
Once mounting the shutter to the unit, air volume, cooling (heating) capacity and efficiency would be
block down, this affection enhance along with the angle of the shutter. Thus, we are not recommend you
to mount the shutter, if necessary in use, please adjust the angle of shutter no larger than 15°.
Only one bending site is allowanced in the air duct, otherwise, device may be disoperation.
2.2.8 Arrangement of outdoor units
If more than two outdoor units are combined in the system, these outdoor units shall be arranged
according to the descending order of their cooling capacity, and the outdoor unit with the highest cooling
capacity shall be placed at the first branch pipe. In addition, the outdoor unit with the highest cooling
capacity shall be set to master unit, while others shall be set to slave units.
The following takes a system with outdoor units of 40HP (10HP+14HP+16HP) as an example:
1) Place the outdoor unit of 16HP beside the first branch pipe (see the figure below)
2) Place the outdoor units in the descending order of their cooling capacity, namely, 16HP, 14HP and
10HP.
3) Set the outdoor unit of 16HP to master unit, and the outdoor units of 14HP and 10HP to slave unit.
16HP 14HP 10HP
Outdoor unit
(40HP)
The1st branching tube
Indoor unit A Indoor unit B Indoor unit C
Remark: All the outdoor units should be installed on the location of same level, or it may cause
imbalance of refrigerant distributing and lead the fault of the compressors.
Although the V4+ S series outdoor units can auto balance the load due to the master free cycle duty
operation, but it is still recommended to install the biggest unit close to the first branch and set as master
also.
Installation 119