22
ART080A
ART100A
ART150A
ART200A
Refrigerant
charge per
circuit (kg)
4.5
5.9
2 x 4.5
2 x 5.9
ART080AR
ART100AR
ART150AR
ART200AR
Refrigerant
charge per
circuit (kg)
4.7
5.6
2 x 4.7
2 x 5.6
3. DUCT CONSTRUCTION.
(1) Series ART side flow units are equipped with horizontal supply and
return air openings. Duct connection to the unit should be made with
duct flanges and secured directly to the air openings with flexible duct
connectors to avoid normal noise transmission.
(2) For vertical air supply, a field supply plenum should be used.
The figure below shows the recommended method for duct connection.
(3) Series ART down flow units are equipped with vertical supply and return
air openings. Duct connection to the unit should be made with duct
flanges to avoid normal noise transmission.
(4) To prevent air leakage, all duct seams should be taped.
Ducts run in air spaces that are not air-conditioned must be insulated
and provided with a vapor barrier.
Ducts exposed to the outside must be weather proofed. For quiet
operation, we recommend that the insulation on the supply duct be
placed inside, lining the duct.
(5) Where ducts from the outside enter a building, the duct openings
in the building should be sealed with weather stripping to prevent
rain, duct, sand, etc. from entering the building.
(6) Fans will not accept any external resistance to airflow and what
provision is available if ductwork is to be fitted to the external fans.
(7) Correctly sized filters must be fitted and there is no provision within
the unit, however the filters may be installed in the return air.
(8) Duct earth wiring must be connected, refer to term 4 (outline drawing)
about earth point.
In case of down flow, we must use accessory screw attached on
control box cover.
4. LIFTING METHOD.
When the unit is to be lifted and moved, attach ropes to the suspension
plates (4 p.c.s) provided on the top of the unit.
When the unit is lifted, it is center of gravity tends to shift the unit one side
and so balance, such as that in the figure below, should be attained. The
angles at which the ropes suspend the unit should be at least 60° at the
compressor end and at least 45 ° at the condenser end.
Care should be taken to avoid contact with the main unit while carrying.
5. DRAIN PIPING.
(1) The condensate drain fitting (R 1) is provided. The drain pipe can be
led out at the right or left side. Under standard specifications, it is led
out at the left side and the right side is covered.
(2) The drain pipe must be provided with a trap on the outside of the unit
and also installed at an incline for proper drainage, as shown below.
(3) To prevent condensate formation and leakage, provide the drain pipe
with insulation to safeguard against sweating.
(4) Upon completion of the piping work, check that there is no leakage
and that the water drains off properly.
6. REFRIGERANT CHARGE
An additional charge is unnecessary.
The table below shows the amount of the charge when the factory is shipped.
Duct connection with
a vertical air plenum
at ART side flow unit
Duct connection at
ART down flow unit
Hook (as directly aligned
over the center of gravity
as possible
The drain piping should have a drain trap.