Specifications

CNTR-40
CONTROLLER (Feb. 2009)
CONTROLLER
DATA U4
3. SYSTEM CONTROLLER
Centralized controller
GB-24A
LAN
Power supply unit
PAC-SC51(50)KUA
M-NET
ME remote
controller
M-NET
M-NET
ME remote
Indoor unitIndoor unit
Indoor unit
Indoor unit
Mr.Slim
Outdoor unit
Outdoor unit
Outdoor unit
controller
LOSSNAY M-NET
remote controller
ME remote
controller
LOSSNAY unit
3-7-1. Power supply to GB-24A
GB-24A needs DC power supply of M-NET (24~32VDC) for centralized control transmission use, operation and LAN function use.
(1). Power supply of M-NET from power supply unit PAC-SC51(50)KUA.
Power supply unit PAC-SC51(50)KUA is recommended for GB-24A. See the diagram below ; for details, please refer to
the IM of Power supply unit PAC-SC51(50)KUA
Fig. 1 Basic structure of GB-24A and PAC-SC51(50)KUA
MA: MA remote controller
MA
M-NET
adapter
Fig. 2 GB-24A, TB7 scheme
Centralized control
transmission line
Centralized controller
GB-24A
Indoor/outdoor transmission line
Indoor/outdoor transmission line
R410A
TB7
TB7
Outdoor unit
CN41
CN40
CN41
(2). Power supply of M-NET from outdoor unit connector TB7.
As shown on Fig. 2, GB-24A receives power supply of M-NET from R410A outdoor unit connector TB7.
In case one of the outdoor units should change its power supply, switch CN41 to CN40.
*NOTE: This method applies to R410A CITY MULTI outdoor unit except PUMY (S series)
MA