Mitsubishi Electric CITY MULTI PVFY-P12, Installation Manual

Page: 25 / 58

25
Typical Transmission wire connections when using
MA remote controllers
PA79D202H01 16
Caution:
Be sure to ground the unit. Do not connect the grounding
cable to any gas pipe, water pipe, lightening rod, or
telephone earth cable. Incomplete grounding may cause a
risk of electrical shock.
If the supply cord is damaged, it must be replaced by the
manufacturer, its service agent or similarly qualified persons
in order to avoid a hazard.
Types of control cables
Wiring transmission cables (M-NET)
Types of transmission cable: Shielded wire CVVS or CPEVS
Cable diameter: (AWG16)
Maximum wiring length: Within 200 m (656ft.)
Maximum length of transmission lines for centralized control and
indoor/outdoor lines (Maximum length via indoor units): 500 m
[1640ft] MAX
The maximum length of the wiring between power supply (PAC-
SC51KUA) for transmission lines (on the transmission lines for
centralized control) and each outdoor unit and system controller is
200 m (656ft)
14.A. Controllers
M-NET (ME) Controllers
Type of transmission cable: Sheathed 2-core cable (unshielded)
Cable diameter: (AWG18)
Note: When 10 m (33 ft) is exceeded use same cable as
specified for transmission wiring above.
MA Controllers – Minimum 18 gauge
Type of transmission cable: Sheathed 2-core cable (unshielded)
Cable diameter: (AWG18)
Note: Length not to exceed 200 m (265’)
Wire size for Main Power Supply and On/Off
Capacities.
Minimum Wire size AWG
Main Cable: 14
Branch: 14
Ground: 14
Breaker for Wiring (NFB)
15 A
Caution: DO NOT POWER THE ELECTRIC HEAT
FROM THE OUTDOOR UNIT. FOLLOW THE
APPROPRIATE WIRING SCHEMATIC FOUND IN
THE ELECTRIC HEATER INSTRUCTIONS.
Caution:
Do not use anything other than the correct capacity breaker and
fuse. Using fuse, wire or copper wire with too large capacity may
cause a risk of malfunction or fire.
Connecting remote controller, indoor and outdoor
transmission cables
Connect indoor unit TB5 and outdoor unit TB3. (Non-polarized 2-
wire)
The “S” on indoor unit TB5 is a shielding wire connection. For
specifications about the connecting cables, refer to the outdoor
unit installation manual.
Install a remote controller following the manual supplied with the
remote controller.
Connect the “1” and “2” on the indoor unit TB15 to a MA remote
controller. (Non-polarized 2-wire)
Connect the “M1” and “M2” on indoor unit TB5 to an M-NET
remote controller. (Non-polarized 2-wire)
-DC 9 to 13 V between 1 and 2 (MA remote controller)
-DC 24 to 30 V between M1 and M2 (M-NET remote controller)
M1 M2 M1 M2 S 1 2 M1 M2 S 1 2
Outdoor
Unit
Indoor
Unit
Typical transmission wire connections
when using MA remote controllers
TB3 TB5 TB15
Indoor
Unit
TB5 TB15
MA
Controller
MA
Controller
The MA remote controller and the M-NET remote controller cannot
be used at the same time or interchangeably.
The MA remote controller and the M-NET remote controller cannot
be used at the same time or interchangeably.
Typical Transmission wire connections when using
ME remote controllers
PA79D202H01 17
M1 M2 M1 M2 S M1 M2 S
Controller
ME
Controller
Unit
TB3 TB5 TB5
Unit Unit
Typical transmission wire connections
when using ME remote controllers
ME
Outdoor Indoor Indoor
Note:
Ensure that the wiring is not pinched when fitting the terminal box
cover. Pinching the wiring may cut it.
Caution:
Install wiring so that it is not tight and under tension. Wiring under
tension may break or overheat and burn.
Fix power source wiring to control box by using buffer bushing or
tensile force. (PG connection or the like.) Connect transmission
wiring to transmission terminal block through the knockout hole of
control box using ordinary bushing.
After wiring is complete, make sure again that there is no tension on
the connections, and attach the cover onto the control box in the
reverse order removal. Also, seal any openings created from wiring
into the air handler. This will prevent air leakage.
Caution:
Wire the power supply so that no tension is imparted. Otherwise
disconnection, heating or fire may result.
Important:
Attach shielding ground on the outdoor unit’s ground terminal.
If the remote controller cable exceeds 10 m [32 ft], use a 1.25 mm
2
[AWG16] diameter cable over the exceeded portion, and add that
exceeded position to within 200 m [656 ft].
The BC controller is required only for simultaneous cooling and
heating series R2.
14.B. Connecting Line Voltage
Make sure power supply is off.
Connect the conduit to the air handler cabinet using a 1/2" connector.
Ensure there is no air leak and seal properly if required.
On the line voltage terminal block loosen the screws marked L1, L2
and G on the line voltage terminal strip. Insert line voltage wires and
tighten screws.
Changing the power voltage setting
(Be sure to operate with the main power turned OFF)
Please set the switch SW5 according to the power voltage.
-Set SW5 to 240V side when the power supply is 230 volts
-When the power supply is 208 volts, set SW5 to 220V side.
Model
Indoor Unit
Hz Volts Voltage
Range
MCA Output
(kW)
FLA
P12
60 208/230V
188 to
253V
3.00/3.00 0.121 2.4
P18 3.00/3.00 0.121 2.4
P24 3.00/3.00 0.121 2.4
P30 4.13/4.13 0.244 3.0
P36 4.13/4.13 0.244 3.0
P48 5.63/5.63 0.430 4.5
P54 5.63/5.63 0.430 4.5
Setting addresses
(Be sure to operate with the main power turned OFF.)
<Address board>
Lower right corner
of circuit board
SW14 SW12 SW11
There are two types of rotary switch setting available: setting
addresses 1 to 9 and over 10, and setting branch numbers.
How to set addresses:
Example: If Address is “3”, leave SW12 (for over 10) at “0”,
and match SW11 (for 1 to 9) with “3”
How to set branch numbers SW14 (Series R2 only):
Match the indoor unit’s refrigerant pipe with the BC
controller’s end connection number. If there is no BC
controller used leave at “0”.
The rotary switches are all set to “0” when shipped from the factory.
These switches can be used to set unit addresses and branch
numbers at will.
The determination of indoor unit addresses varies with the system
at site. Set them referring to technical data.
_____________________________________
Sensing room temperature with the built-in sensor in
a remote controller
If you need to sense room temperature with the built-in sensor on
a remote controller, set SW1-1 on the control board to “ON”. The
setting of SW1-7 and SW1-8 as necessary also makes it possible
to adjust the air flow at a time when the heating thermometer is off.
Note:
Ensure that the wiring is not pinched when fitting the terminal box
cover. Pinching the wiring may cut it.
Caution:
Install wiring so that it is not tight and under tension. Wiring under
tension may break or overheat and burn.
Fix power source wiring to control box by using strain relief bushing
or tensile force. (PG connection or the like.) Connect transmission
wiring to transmission terminal block through the knockout hole of
control box using ordinary bushing.
After wiring is complete, make sure again that there is no tension
on the connections, and attach the cover onto the control box in the
reverse order removal. Also, seal any openings created from wiring
into the air handler. This will prevent air leakage.
Caution:
Wire the power supply so that no tension is on the wires. Otherwise
disconnection, heating or fire may result.
Important:
Attach shielding ground on the outdoor unit’s ground terminal.
If the remote controller cable exceeds 10 m [32 ft.], use a 1.25 mm
2
[AWG16] diameter cable over the exceeded portion, and add that
exceeded position to within 200 m [656 ft.].
The BC controller is required only for simultaneous cooling and
heating series R2.
13.2. Connecting line voltage
Make sure power supply is off.
Connect the conduit to the air handler cabinet using a 1/2”
connector. Ensure there is no air leak and seal properly if required.
On the line voltage terminal block loosen the screws marked L1, L2
and G on the line voltage terminal strip. Insert line voltage wires and
tighten screws.
Changing the power voltage setting
(Be sure to operate with the main power turned OFF)
Please set the switch SW5 according to the power voltage.
-Set SW5 to 240V side when the power supply is 230 volts
-When the power supply is 208 volts, set SW5 to 220V side.
Electrical Characteristics
Symbols : MCA : Max. Circuit Amps ( = 1.25 × FLA) FLA : Full Load Amps
IFM : Indoor Fan Motor Output : Fan motor rated output
Model
Indoor Unit IFM
Hz Volts Voltage
Range
MCA
(A)
Output
(kW)
FLA
(A)
P12
60 208/230V
188 to
253V
3.00/3.00 0.121 2.4
P18 3.00/3.00 0.121 2.4
P24 3.00/3.00 0.121 2.4
P30 4.13/4.13 0.244 3.3
P36 4.13/4.13 0.244 3.3
P48 5.63/5.63 0.430 4.5
P54 5.63/5.63 0.430 4.5