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5.4 Connect signal and power cables
Caution
Before installing a wall-mounted unit, make sure that the wall is made of solid brick, concrete, or of similarly
strong material. The wall must be able to support at least four times the weight of the unit.
5. Outdoor Unit Installation
If you will install the unit on the ground or on a concrete mounting platform, do the following:
1. Mark the positions for four expansion bolts based on dimensions in the Unit Mounting Dimensions chart.
2. Pre-drill holes for expansion bolts.
3. Clean concrete dust away from holes.
4. Place a nut on the end of each expansion bolt.
5. Hammer expansion bolts into the pre-drilled holes
.
6. Remove the nuts from expansion bolts, and place outdoor unit on bolts.
7. Put washer on each expansion bolt, then replace the nuts.
8. Using a wrench, tighten each nut until snug.
If you will install the unit on a wall-mounted bracket, do the following:
1. Mark the position of bracket holes based on dimensions in the Unit Mounting Dimensions chart.
2. Pre-drill the holes for the expansion bolts.
3. Clean dust and debris away from holes.
4. Place a washer and nut on the end of each expansion bolt.
5. Thread expansion bolts through holes in mounting brackets, put mounting brackets in position, and hammer
expansion bolts into the wall
6. Check that the mounting brackets are level.
7. Carefully lift unit and place its mounting feet on brackets.
8. Bolt the unit firmly to the brackets.
Note:
If allowed, you can install the wall-mounted unit with rubber gaskets to reduce vibrations and noise.
When drilling into concrete, eye protection is recommended at all times.
The outside unit’s terminal block is protected by an electrical wiring cover on the side of the unit.
A comprehensive wiring diagram is printed on the inside of the wiring cover.
Before performing electrical work, read these regulations
All wiring must comply with local and national electrical codes, and must be installed by a licensed electrician.
All electrical connections must be made according to the Electrical Connection Diagram located on the
panels of the indoor and outdoor units.
If there is a serious safety issue with the power supply, stop work immediately. Explain your reasoning to the
client, and refuse to install the unit until the safety issue is properly resolved.
Power voltage should be within 90-110% of rated voltage. Insufficient power supply can cause malfunction,
electrical shock, or fire.
If connecting power to fixed wiring, install a surge protector and main power switch with a capacity of 1.5
times the maximum current of the unit.
If connecting power to fixed wiring, a switch or circuit breaker that disconnects all poles and has a contact
separation of at least 1/8in (3mm) must be incorporated in the fixed wiring. The qualified technician must use
an approved circuit breaker or switch.
Only connect the unit to an individual branch circuit outlet. Do not connect another appliance to that oulet.
Make sure to properly ground the air conditioner.
Every wire must be firmly connected. Loose wiring can cause the terminal to overheat, resulting in product
malfunction and possible fire.
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