Specifications

CNTR-74
CONTROLLER (Feb. 2009)
CONTROLLER
DATA U4
3. SYSTEM CONTROLLER
The Outdoor unit supplies transmission power 30VDC for the indoor-outdoor transmission line at its connector TB3 and TB7.
The power is consumed by the Indoor unit, ME remote controller, Timers and System controllers.When the total quantity of
Indoor units, and ME remote controller, Timers and System controllers is over 40, or when transmission power supply is not
enough, the transmission booster PAC-SF46EPA should be designed into the air-conditioner system to ensure the system
communication.Indoor unit sized P72, 96 is counted as 2 units.
Indoor Indoor unit BC controller MA RC. LOSSNAY ME Remote Contr. Timers, System Contr. ON/OFF Contr.
12201/4 1/21
Sized P06-P54 Sized P72-P96 CMB
PAR-21MAA
PAC-YT51CRB
PAR-FA32MA
LGH-RX-E
PZ-41SLB
PAR-F27MEA-US
PZ-52SF
PAC-SF44SRA
PAC-YT34STA
G-50
AG-150A
A
3
GB-50APAC-YT40ANRA
*RC : Remote Controller
Ta ble 3-18-1 The equivalent power consumption by Indoor units, LOSSNAY, controllers
3-18-1. Designing PAC-SF46EPA into an air-conditioner system.
Taking the power consumption of Indoor unit sized P06-P54 as 1, the equivalent power consumption or supply of others are
listed at Ta ble 3-18-1 and Ta ble 3-18-2.
Tr ansmission Booster
25
PAC-SF46EPA
Power supply unit
6
PAC-SC50KUA
5
PAC-SC51KUA
Outdoor unit
32
Connector TB3 and TB7 total *
Outdoor unit
6
Connector TB7 only
*If PAC-SC50KUA or PAC-SC51KUA is used to supply power at TB7 side, no power supply need from Outdoor unit at TB7, Connector TB3 itself will therefore have 32.
Ta ble 3-18-2 The equivalent power supply of Tr ans. Booster, Power supply unit, Connector TB3, TB7 of Outdoor unit.
Tr ansmission booster PAC-SF46EPA has equivalent transmission power 25.
With the equivalent power consumption values in Table 3-18-1 and Ta ble 3-18-2, PAC-SF46EPA can be designed into the air-
conditioner system to ensure proper system communication according to 3-18-1-A, B, C.
3-18-1-A) Firstly, count from TB3 at TB3 side the total quantity of Indoor units and ME remote controller, Timers and System
is counted as 2 Indoor units, but MA remote controller(s), LOSSNAY is NOT counted.
controllers.If the total quantity reaches 40, a PAC-SF46EPA should be set.In this case, Indoor unit sized P72, 96
3-18-1-B) Secondly, count from TB7 side to TB3 side the total transmission power consumption. If the total power consumption
reaches 32, a PAC-SF46EPA should be set.Yet, if a PAC-SC50KUA or PAC-SC51KUA is used to supply power at TB7
side, count from TB3 side only.
3-18-1-C) Thirdly, count from TB7 at TB7 side the total transmission power consumption, If the total power consumption reach-
es 6, a PAC-SF46EPA should be set.
Unit:mm [in.]
External dimension
GB-24A
360[14-3/16]
340[13-13/32]
240[9-15/32]
165[6-1/2]160[6-5/16]
T
UP
300[11-13/16]
3-18. Transmission booster [PAC-SF46EPA]