Mitsubishi Electric HP120TNU-A Service Handbook page 32

[2-2 Types and Maximum Allowable Length of Cables ]
(2) Control wiring
Different types of control wiring are used for different systems. 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]
Types and maximum allowable length of cables
Control lines are categorized into 2 types: transmission line and remote controller line.
Use the appropriate type of cables and observe the maximum allowable length specified for a given system. If a given system
has a long transmission line or if a noise source is located near the unit, place the unit away from the noise source to reduce
noise interference.
1) M-NET transmission line
Facility type
Type
Cable type
Number of
cores
Cable size
Maximum transmission line dis-
tance between the outdoor unit and
the farthest indoor unit
Maximum transmission line dis-
tance for centralized control and In-
door/outdoor transmission line
(Maximum line distance via outdoor
unit)
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 .
HWE18220_GB
1000 m [3280ft] (500 m [1640ft]) max.
*The maximum overall line length from the power supply unit on the transmission
lines for centralized control to each outdoor unit or to the system controller is 200m
[656ft] max.
*1 If a given system includes one or more unit or remote controller that does not
support the maximum allowable cable distance of 1000 m [3280 ft], the maxi-
mum allowable cable distance in the system will be 500 m [1640 ft]. Refer to the
latest catalog for information on which units and remote controllers support the
maximum allowable cable distance of 1000 m [3280 ft].
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.
All facility types
Shielded cable CVVS, CPEVS, MVVS
2-core cable
2
Larger than 1.25mm [AWG16]
200 m [656ft] max.
*1
*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.
*2
2 *4
) [AWG18 to 16]
3
chapter 2 -