7
GB
1.3. Before getting installed (moved) - electri-
cal work
Caution:
•
Ground the unit.
- Do not connect the ground wire to gas or water pipes, lightning rods, or tele-
phone ground lines. Improper grounding may result in electric shock.
•
Install the power cable so that tension is not applied to the cable.
- Tension may cause the cable to break and generate heat and cause a fire.
•
Install an leak circuit breaker, as required.
- If an leak circuit breaker is not installed, electric shock may result.
•
Use power line cables of sufficient current carrying capacity and rating.
- Cables that are too small may leak, generate heat, and cause a fire.
•
Use only a circuit breaker and fuse of the specified capacity.
- A fuse or circuit breaker of a larger capacity or a steel or copper wire may result
in a general unit failure or fire.
•
Do not wash the air conditioner units.
- Washing them may cause an electric shock.
•
Be careful that the installation base is not damaged by long use.
- If the damage is left uncorrected, the unit may fall and cause personal injury or
property damage.
•
Install the drain piping according to this Installation Manual to ensure
proper drainage. Wrap thermal insulation around the pipes to prevent con-
densation.
- Improper drain piping may cause water leakage and damage to furniture and
other possessions.
•
Be very careful about product transportation.
- Only one person should not carry the product if it weighs more than 20 kg.
- Some products use PP bands for packaging. Do not use any PP bands for a
means of transportation. It is dangerous.
- Do not touch the heat exchanger fins. Doing so may cut your fingers.
- When transporting the outdoor unit, suspend it at the specified positions on the
unit base. Also support the outdoor unit at four points so that it cannot slip side-
ways.
•
Safely dispose of the packing materials.
- Packing materials, such as nails and other metal or wooden parts, may cause
stabs or other injuries.
- Tear apart and throw away plastic packaging bags so that children will not play
with them. If children play with a plastic bag which was not torn apart, they face
the risk of suffocation.
1.4. Before starting the test run
Caution:
•
Turn on the power at least 12 hours before starting operation.
- Starting operation immediately after turning on the main power switch can
result in severe damage to internal parts. Keep the power switch turned on dur-
ing the operational season.
•
Do not touch the switches with wet fingers.
- Touching a switch with wet fingers can cause electric shock.
•
Do not operate the air conditioner with the panels and guards removed.
- Rotating, hot, or high-voltage parts can cause injuries.
•
Do not turn off the power immediately after stopping operation.
- Always wait at least five minutes before turning off the power. Otherwise, water
leakage and trouble may occur.
•
When water has been supplied to the water pipework, purge the system of air.
The details of air purging can be found separately in the water circuit mainte-
nance manual.
2. Indoor unit accessories
The unit is provided with the following accessories:
3. Selecting an installation site
•
Select a site with sturdy fixed surface sufficiently durable against the weight of
unit.
•
Before installing unit, the routing to carry in unit to the installation site should be
determined.
•
Select a site where the unit is not affected by entering air.
•
Select a site where the flow of supply and return air is not blocked.
•
Select a site where refrigerant piping can easily be led to the outside.
•
Select a site which allows the supply air to be distributed fully in room.
•
Do not install unit at a site with oil splashing or steam in much quantity.
•
Do not install unit at a site where combustible gas may generate, flow in, stag-
nate or leak.
•
Do not install unit at a site where equipment generating high frequency waves (a
high frequency wave welder for example) is provided.
•
Do not install unit at a site where fire detector is located at the supply air side.
(Fire detector may operate erroneously due to the heated air supplied during
heating operation.)
•
When special chemical product may scatter around such as site chemical plants
and hospitals, full investigation is required before installing unit. (The plastic com-
ponents may be damaged depending on the chemical product applied.)
•
If the unit is run for long hours when the air above the ceiling is at high tempera-
ture/high humidity (due point above 26 °C), due condensation may be produced
in the indoor unit. When operating the units in this condition, add insulation mate-
rial (10-20 mm) to the entire surface of the indoor unit to avoid due condensation.
3.1. Install the indoor unit on a ceiling strong
enough to sustain its weight
Warning:
The unit must be securely installed on a structure that can sustain its weight. If
the unit is mounted on an unstable structure, it may fall down causing injuries.
3.2. Securing installation and service space
•
Select the optimum direction of supply airflow according to the configuration of
the room and the installation position.
•
As the piping and wiring are connected at the bottom and side surfaces, and the
maintenance is made at the same surfaces, allow a proper space properly. For
the efficient suspension work and safety, provide a space as much as possible.
[Fig. 3.2.1] (P.2)
3.3. Combining indoor units with outdoor
units
For combining indoor units with outdoor units, refer to the outdoor unit installation
manual.
Part No.
Accessories
Qty
Part No.
Accessories
Qty
1
Insulation pipe
1
5
Installation manual
1
2
Tie band
3
6
Operation manual
1
3
Drain hose
1
4
Washer
8
A
Access door
B
Electrical parts box
C
Air inlet
D
Air outlet
E
Ceiling surface
F
Service space (viewed from the side)
G
Service space (viewed from the direction of arrow)
1
600 mm or more
2
100 mm or more
3
20 mm or more
4
300 mm or more
02_WT06410_GB.fm Page 7 Friday, November 25, 2011 3:59 PM
