4. Locally Procured Parts
All parts other than the Multiple Remote Controller Adapter are procured locally.
The items required will depend on the connection method. Refer to the example of use shown below.
(Example)
1
Switch .................. Single pole, single action switch.
CAUTION
Select a part with contacts for extremely low amperage.
5 or 12 VDC is used at the contact points for the switch so there is a load of only approximately 1 mA.
Improper switch selection could cause improper operation.
2
Relay ................... Use relays that meet the following specifications.
Operation coil
Rated voltage: 12 VDC
Power consumption: 0.9 W or less
* Use the diode that is recommended by the relay manufacturer at both ends of the relay coil.
3
Transit relay ......... When the wiring work as described in
6. Wiring Restrictions
is required, this relay is used.
4
Control cable ....... The length of the electrical wiring for the PAC-SA88HA-E is 2 meters (6-1/2 ft).
To extend this length, use sheathed 2-core cable. Don’t extend the cable more than 10 meters (32 ft).
Control cable type: CVV, CVS, CPEV or equivalent
Cable size: 0.5 mm
2
~ 1.25 mm
2
(16 to 22 AWG)
CAUTION
1. Wiring should be covered by insulation tube with supplementary insulation.
2. Use relays or switches with IEC or equivalent standard.
3. The electric strength between accessible parts and control circuit should have 2750 V or more.
5. Locally Procured Wiring
Basic connection methods for following models are shown below as examples.
For details, refer to the CITY MULTI DATA BOOK, Electrical Wiring Diagram etc.
Indoor unit “-E” type input/output connector (CITY MULTI series)
Polarity (output terminal)
No.
Color
CN51
CN52
1
Brown
+
2
Red
-
3
Orange
+
-
4
Yellow
-
-
5
Green
-
1
Input (CN51)
CN51
X
Y
Z
L
1
L
2
SW
X
1
2
3
4
5
Y
Z
Distant control board
Indoor unit
control board
Relay circuit
Adapter
SW: Distant ON/OFF switch
L1: Status lamp
L2: Error lamp
X: Relay (a point of contact, fixed DC1 mA)
Y, Z: Relay Contact rating voltage ≥ 15 VDC
Contact rating current ≥ 0.1 A
Minimum applicable load ≤ DC1 mA
Power
supply of
relay
Maximum cable length is 10 m (32 ft.)
* Every time the SW is pushed (the pulse
is inputted), it reacts against ON/OFF.
• ON/OFF (Pulse) input specification
Item
Description
Input signal
Pulse sign (Normally open)
Standard of pulse
200 ms
or more
200 ms
or more
2
Input (CN52)
3
Output (CN52)
SW1
X
CN52
5
1
2
3
4
X
Distant control board
Indoor unit
control board
Relay circuit
Adapter
Since this is not used, be sure to completely wrap
with insulation tape.
SW1: Demand switch
X: Relay (coil ≤ 0.9 W, 12 VDC)
SW1 Indoor unit
ON
Forced thermo-OFF
OFF Normal running
Power
supply of
relay
Maximum cable length is
10 m (32 ft.)
L
1
L
2
L
3
Z
CN52
1
2
3
4
5
Y
X
X
Z
Y
Distant control board
Indoor unit
control board
Relay circuit
Adapter
Since this is not used, be sure to completely wrap
with insulation tape.
L1: St atus lamp
Fan motor output (SW1-5 OFF)
Thermostat ON (SW1-5 ON)
L2: Cooling/Dry status lamp
L3: Heating status lamp
X, Y, Z: Relay (Coil with fixed 12 VDC, a power consumption of 0.9 W or less)
Power
supply of
relay
Maximum cable length is
10 m (32 ft.)
6. Wiring Restrictions
Keep the length of the cable connecting to the circuit board of the indoor unit shorter than 10 meters (32 ft).
Longer than 10 meters (32 ft) could cause improper operation.
Use a transit relay when extending wiring such as remote wiring.
When using a polarized relay (such as a relay with a diode), connect the relay in the correct polarity to avoid damage to the indoor unit circuit
board.
WT02522X04
HEAD OFFICE:
TOKYO BLDG. , 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
Authorized representative in EU:
MITSUBISHI ELECTRIC EUROPE B.V.
HARMAN HOUSE, 1 GEORGE STREET, UXBRIDGE, MIDDLESEX UB8 1QQ, U.K.
