Switch Settings - Mitsubishi Electric PUHY-HP72 Service Handbook

[2-3 Switch Settings ]

2) Remote controller wiring
Type
Number of
cores
Cable type
Cable size
Maximum overall line
length
*1 MA remote controller refers to MA remote controller (PAR-20MAU, PAR-21MAAU, PAR-30MAAU), MA simple re-
mote controller, and wireless remote controller.
*2 ME remote controller refers to ME remote controller, Compact ME remote controller, and LOSSNAY remote control-
ler.
*3 The use of cables that are smaller than 0.75mm
*4 When connected to the terminal block on the Simple remote controller, use cables that meet the cable size specifi-
cations shown in the parenthesis.
*5 When connecting PAR-30MAAU or MA Simple remote controller, use sheathed cables with a minimum thickness of
2
0.3 mm .
2-3

Switch Settings

1. Switch setting
The necessary switch settings depend on system configuration. Before performing wiring work, refer to the following page(s).
[2-7 Example System with an MA Remote Controller]
[2-8 Example System with an ME Remote Controller]
[2-9 Example System with an MA and an ME Remote Controller]
If the switch settings are changed while the unit is being powered, those changes will not take effect, and the unit will not
function properly.
Units on which to set the switches
CITY MULTI indoor unit
LOSSNAY, OA processing unit
ATW
Air handling kit
ME remote controller
*4
MA remote controller
CITY MULTI outdoor unit
*1. Applicable when LOSSNAY units are connected to the indoor-outdoor transmission line.
*2. The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2 in the order of
capacity from large to small (if two or more units have the same capacity, in the order of address from small to large).
*3. Turn off the power to all the outdoor units in the same refrigerant circuit.
*4. When setting the switch SW4 of the control board, set it with the outdoor unit power on. Refer to the following page(s).
[5-1-1 Outdoor Unit Switch Functions and Factory Settings]
HWE18240_GB
MA remote controller
VCTF, VCTFK, CVV, CVS, VVR, VVF, VCT Shielded cables CVVS, CPEVS, and MVVS
2-core cable
2 *3 *5
0.3 to 1.25mm
[AWG22 to 16]
200 m [656ft] max.
2
(AWG18) is recommended for easy handling.
Symbol
Main/sub unit IC
*1
LC
Water Hex Unit AU
IC
Main/sub remote RC
controller
Main/sub remote MA
controller
*2
OC,OS1,OS2
*1
ME remote controller
2-core cable
2 *3
0.3 to 1.25mm
[AWG22 to 16]
(0.75 to 1.25mm
The section of the cable that exceeds 10m
[32ft] must be included in the maximum in-
door-outdoor transmission line distance.
Units to which the power must be shut off
*3
Outdoor units and Indoor units
*3
Outdoor units and LOSSNAY
Outdoor units and Water Hex Unit
*3
Outdoor units or field supplied air handling
unit
*3
Outdoor units
Indoor units
*3 *5
Outdoor units
*2
2 *4
) [AWG18 to 16]
3
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