Connecting Line Voltage - Mitsubishi Electric MVZ-A12AA7 Installation Manual

13.2. Connecting line voltage

Make sure power supply is off.
The unit should be installed by a licensed contractor/
electrician. If required by applicable national, state and
local codes; a disconnect switch will need to be installed
when the indoor unit is powered from the outdoor unit.
Remark:
* Use a ring tongue terminal in
order to connect a ground wire
to terminal.
Grounding Terminal*
NOTE: If the air handler will be installed with electric heat
package do not power the electric heat from the outdoor unit.
All wiring must conform to National and Local codes
Function Table
Mode
Not available
Power failure auto
restart Available
Indoor unit operating average
Indoor temperature
Set by indoor unit's remote controller
detecting
Remote controller's internal sensor
Not Supported
LOSSNAY connectivity Supported (indoor unit is not equipped with outdoor air intake
Supported (indoor unit is equipped with outdoor air intake
240V (230V)
Power voltage
220V (208V)
By setting the Mode No. 23 in the Function Table in section 9-1, the following patterns of fan control will become possible.
100 Hr
Filter sign 2500 Hr
Fan control patterns
"No filter sign indicator"
Heat operation & Thermo ON
CN4Y for FAN control
Humidifier control
Heat operation
(PAC-YU25HT)
Heater Not Present
Heater Control
Disabled
Heater Present *1
(CN4Y cannot be used with this unit)
Heater control during Disable heater during Defrost and Error
defrost and error
Enable heater and fan during Defrost and Error *2
*1 While the heater is on, the fan will operate at high speed regardless of the fan setting on the remote controller.
*1 While the heater is on, the fan will operate at high speed regardless of the fan setting on the remote controller
*2 While the heater output is on in the Function Table in section 9-1, the heater will be ON except when the unit is in
*2 Heater will not operate during all error modes. Heater will only operate during a communication error between indoor unit and outdoor unit
communication error, return air thermistor error and motor error.
Note: When CN4Y is used the fan is off when CN24 is energized which is only for use with supplemental heat that is not in the duct.
* If a heater is installed in the duct, do not use Panel heater connector. By doing so, the fan will turn off
when the heater is on, which may result in fire.
- Please see section 13.4. for external static pressure settings.
22
1. Remove the desire knockout on the air handler.
2. Attach a conduit pipe connector to the air handler and route the
wiring as shown in the above diagram. Ensure conduit connection
Grounding
terminal*
hole is air tight and add a sealant if necessary.
3. Firmly tighten all of the terminal screws. After tightening, verify
that the wires are tightly fastened.
Disconnect
switch
Electrical Characteristics
Grounding Terminal*
Settings
Fan in defrost
Mode(function)
No.23(123)
1 STOP(Heater OFF)
2 STOP(Heater OFF)
Symbols : MCA : Max. Circuit Amps ( = 1.25 × FLA) FLA : Full Load Amps
IFM : Indoor Fan Motor
Indoor Unit
Model Voltage
Hz Volts
Range
A12
A18
188 to
A24 60 208/230V
253V
A30
A36
Mode (function) No.
Wired remote
controller
(RF thermostat)
01
(101)
02
( - )
03
(103)
04
(104)
07
(107)
16
Fan(All modes other
(116)
than defrost)
11
Set(Heater ON *2
(111)
High *1 (Heater ON
23
(123)
Output : Fan motor rated output
IFM
MCA Output FLA
(A) (kW) (A)
3.00/3.00 0.121 2.4
3.00/3.00 0.121 2.4
3.00/3.00 0.121 2.4
4.13/4.13 0.244 3.3
4.13/4.13 0.244 3.3
Setting Initial
Check
no. setting
1
1
2
1
2 1
3
1
2 1
3
1
1
2
1
2 3
3
1
Factory
1
2
setting
1
- 1
)
2
*2 )
1
1
2