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Field Piping and Wiring
Si21-205
50
Field Piping and Wiring
Note:
1. All transmission wiring except for the remote controller wires is polarized and must match the
terminal symbol.
2. In case of group control, perform the remote controller wiring to the master unit when
connecting to the simultaneous operation system. (wiring to the slave unit is unnecessary)
3. For group control remote controller, choose the remote controller that suits the indoor unit
which has the most functions (as attached swing flap)
4. When controlling the simultaneous operation system with 2 remote controllers, connect it to
the master unit. (wiring to the slave unit is unnecessary)
1.3.4 Electric Wiring Work
•
All field supplied parts and materials and electric works must conform to local codes.
•
Use copper wire only.
•
For electric wiring work, refer to also “1.3.3. Wiring Example” on page 49 attached to the unit
body.
•
For remote controller wiring details, refer to the installation manual attached to the remote
controller.
•
All wiring must be performed by an authorized electrician.
•
A circuit breaker capable of shutting down power supply to the entire system must be
installed.
•
Refer to the installation manual attached to the outdoor unit for the size of power supply
electric wire connected to the outdoor unit, the capacity of the circuit breaker and switch, and
wiring instructions.
•
Be sure to ground the air conditioner.
•
Do not connect the ground wire to gas pipes, water pipes, lightning rods, or telephone
ground wires.
•
Gas pipes: might cause explosions or fire if gas leaks.
•
Water pipes: no grounding effect if hard vinyl piping is used.
•
Telephone ground wires or lightning rods: might cause abnormally high electric potential
in the ground during lighting storms.
•
Specifications for field wire
Table 3
Note:
1. Shows only in case of protected pipes. Use H07RN-F in case of no protection. (Sheath
thickness: 1mm or more)
2. Use double insulated wire for remote controller (Sheath thickness: 1mm or more) or run
wires through a wall or conduit so that the user cannot come in contact with them.
3. This length shall be the total extended length in the system of the group control.
Caution
•
Even if the top or rear penetration lid is removed, pull the remote controller cord and the
wiring between units inside the unit using conduits for each, so that the wiring does not come
into contact with the opening section of the metal casing.
•
Pass conduits through the wall and secure along with the refrigerant piping in order to
prevent external pressure being applied to the remote controller cord and wiring between
units.
•
Prevent dust from entering into the unit by filling the gap between the conduits and the
penetration lid (top or rear) with corking or putty.
•
Arrange the wires and fix a lid firmly so that the lid does not float during wiring work.
•
Do not clamp remote controller cord together with wiring between units together. Doing so
may cause malfunction.
•
Remote controller cord and wiring between units should be located at least 50 mm from other
electric wires. Not following this guideline may result in malfunction due to electrical noise.
Wire
Size (mm
2
)
Total Length
Wiring between units
H05VV - U4G
(NOTE 1, 3)
2.5
Max. 200 m
Remote controller cord
Vinyl cord with sheath or cable
(2 wires) (NOTE 2)
0.75 - 1.25
Max. 500 m
(NOTE 3)
Summary of Contents for Sky Air B-Series R-410A
Page 7: ...Si21 205 vi Table of Contents ...
Page 15: ...Models Si21 205 4 Model Name and Power Supply ...
Page 16: ...Si21 205 Functions 5 Part 2 Functions 1 List of Functions 6 ...
Page 35: ...Wireless Remote Controller Si21 205 24 Remote Controller ...
Page 79: ...Settings Concerning Maintenance Si21 205 68 Field Setting Detail of PCB 2 ...
Page 83: ...Maintenance Mode Setting Si21 205 72 Field Setting ...
Page 239: ...Troubleshooting for Outdoor Unit 50 60 class Si21 205 228 Troubleshooting ...
Page 321: ...Outdoor Unit 50 60 class Si21 205 310 Removal Procedure ...