Switch Settings - Mitsubishi Electric PURY-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), Simple MA Re-
mote Controller, and wireless remote controller.
*2 The use of cables that are smaller than 0.75mm
*3 When connected to the terminal block on the Simple remote controller, use cables that meet the cable size specifi-
cations shown in the parenthesis.
*4 When connecting PAR-30MAAU, use a 0.3mm
*5 ME remote controller refers to ME remote controller and Simple ME Remote Controller.
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](page 32)
[2-8 Example System with an ME Remote Controller](page 46)
[2-9 Example System with an MA and an ME Remote Controller](page 48)
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
ME remote controller
MA remote controller
CITY MULTI outdoor unit
BC controller
*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 and OS 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 a PAR-30MAAU is connected to a group, no other MA remote controllers can be connected to the same group.
*5. 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](page 117)
HWE13080
MA remote controller
CVV
2-core cable
2 *2 *4
0.3 to 1.25mm
[AWG22 to 16]
2 *3
(0.75 to 1.25mm )
[AWG18 to 16]
200 m [656ft] max.
Main/sub unit
*1
Main/sub remote
controller
*4
Main/sub remote
controller
*2
Main
Sub1, 2
*1
CVV
2-core cable
0.3 to 1.25mm
[AWG22 to 16]
(0.75 to 1.25mm
[AWG18 to 16]
The section of the cable that exceeds 10m
[32ft] must be included in the maximum in-
door-outdoor transmission line distance.
2
(AWG18) is recommended for easy handling.
2
sheathed cable.
Symbol Units to which the power must be shut off
IC Outdoor units
LC Outdoor units
RC Outdoor units
MA Indoor units
OC,OS Outdoor units
BC Outdoor units
BS1, BS2 Outdoor units
- 21 -
*5
ME remote controller
2 *2
2 *3
)
*3
and Indoor units
*3
and LOSSNAY
*3
*3
*3
and BC controller
*3 *5
and BC controller
GB