11.3. Wiring transmission cables
Wiring method, address setting method and permissible wiring length differ according to and whether or not you are using transmission booster. Check permissible wiring length before wiring.
A may be required depending on the number of indoor units. Item 4 “Wiring examples” gives typical wiring examples
a.System using remote controller (1 outdoor unit)
b.System using remote controller (system operated as a group among multiple refrigerant systems)
c.System using power supply extension unit for transmission booster (combination of systems
1Connecting a transmission booster
A transmission booster (RP) is required when the number of connected indoor unit models in a cooling system exceeds the number of models specified in the chart below.
* The maximum number of units that can be controlled is determined by the indoor unit model, the type of remote controller and their capabilities.
| Remote controller type | Remote controller | |
(*1) |
|
|
|
Capability of the | Number of connected indoor units that can be | Prior to Ver. E | After Ver. F |
connected indoor units | connected without a RP. |
|
|
| 200 or lower | 16 (32) | 20 (40) |
| 200 or higher | 16 (32) | 16 (32) |
The number of indoor units and the total number of remote controllers is displayed within the parenthesis ( ).
*1 If even one unit that is higher than 200 exists in the cooling system, the maximum capacity will be “200 or higher”.
2Name, code and possible unit connections
| Name | Code | Possible unit connections | |
Outdoor unit | Variable capacity unit controller | OC | – | |
Constant capacity unit controller | OS | 1 unit per 1 OC. | ||
| ||||
Indoor unit | Indoor unit controller | IC | 2 to 32 units per 1 OC (*1). | |
Remote controller | Remote controller (*1) | RC | 2 units maximum per group. | |
Other | Transmission booster unit | RP | 0 to 1 unit per 1 OC (*1). |
*1 A transmission booster (RP) may be required depending on the number of connected indoor unit controllers.
3Types of control cables
(1) Wiring transmission cables
•Types of transmission cables Shielding wire CVVS or CPEVS
•Cable diameter More than 1.25 mm2
•Maximum wiring length within 200 m
(2) Remote control cables
Kind of remote control cable | ||
Cable diameter | 0.5 to 0.75 mm2 | |
Remarks | When 10 m is exceeded, use cable with the same | |
specifications as (1) Transmission line wiring. | ||
|
4Wiring examples
Typical wiring examples are shown on pages 28 to 32. (Wiring examples A ~ C)
ENGLISH
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