7
Ducted Air Conditioners
Installation Manual
(2) Install the suspension bolt. (Fig. 3 & 4)
(Use M10 size rod for the suspension bolt)
Use and anchor suitable for both the material being
anchored to and the weight of the unit.
(3) Be sure to completely insulate all external duct work
and fittings.
(4) If using rigid duct work install a canvas (or similar) duct
to the air inlet and air outlet so as not to transmit vibration
from the unit to the duct.
Apply acoustic insulation to the inside of the duct.
(5) Install suitable vibration isolator to the suspension bolts.
INDOOR UNIT INSTALLATION
(1) For suspended installation, hanging brackets should be installed
on the unit.
Attached the hanging bracket to the 8 mounting holes located on the
sides of the unit. (Fig. 3) The maximum length of the securing bolts
must not exceed 20mm (M6 - bolt).
(2) Carefully lift the unit so that the hanging brackets can locate on to
the suspension bolts. (Fig. 5) Be sure to clamp the bracket securely
by using a nut and washer (field supplied) from the upper and
lower sides of the hanging bracket. Ensure that the suspension
bolts are firmly secured. (No up or down movement) (Fig. 5)
CAUTION
(3) Mare sure the unit is level.
•
Level the unit with a water level or other suitable means. If the
unit is not level, it could become the source of water leaks.
•
Check if the unit is level at all four corners with a water level or a
water-filled vinyl tube as shown in the diagrams. (Fig. 6)
(4) Tighten the upper nut.
REFRIGERANT PIPING WORK
`
ALL REFRIGERANT PIPING WORK MUST ONLY BE CARRIED OUT BY A QUALIFIED PERSON
** For refrigerant piping of outdoor units, see the installation manual attached to the outdoor unit. **
Fully insulate the liquid and gas piping separately. Do not leave any gaps otherwise a water leak may occur.
(Seal any joints with glue or duct tape)
When operating in the heating mode, the temperature of the gas piping can reach up to approximately 120
o
C,
so use insulation which has suitable temperature rating.
Also, in cases where the temperature and humidity surrounding the refrigerant piping can exceed 30
o
C or RH
80%, reinforce or use thicker pipe insulation (20mm or thicker). Otherwise condensation may form on the
surface of the insulating material.
** Where additional refrigerant is required, be sure to use only R410A. The use of other types of
refrigerant could cause product malfunction, refrigerant leak or explosion. **
CAUTION
•
Avoid introduction of air or other contaminants into the refrigerant piping. If any air, moisture or other contaminant
remains in the refrigerant piping after the completion of installation, the system will malfunction.
•
Carry out sufficient ventilation if the refrigerant gas leaks during installation work.
•
Use only R410 rated copper seamless tube manufactured to AS/NZS1571.
Nut (field supply)
Tighten
(double nuts)
Washer
Hanging Bracket
Ceiling slab
Anchor
Long nut or turn-buckle
Suspension bolt
Indoor unit
Ceiling
Vinyl tube
Water level
Supply air flange
Fig. 6
Fig. 5
Fig. 4
NOTE: All above parts are field supplied
