Samsung MXJ-YA1509 Series Installation Manual page 101

2-5. Precaution with Duct type 2-5. Precaution with Duct type
1) The suction side should have at least the same cross sectional area as the 1) The suction side should have at least the same cross sectional area as the
discharge side. (1.2 discharge side. (1.2 times or higher
2) Diffuser suction/discharge wind speed(->wind veloc 2) Diffuser suction/discharge wind speed(->wind velocity) :
3) Duct's curvature radius should be greater than the circular duct diameter 3) Duct's curvature radius should be greater than the circular duct diameter
wind(-> airflow rate), noises wind(-> airflow rate), noises problems
→ →
4) Design and construction pursuant to 4) Design and construction pursuant to the duct design
5) Use of a 5) Use of a suction/disch
→ To minimize the air flow noise, attach a suction/discharge chamber with built-in soundproofing To minimize the air flow noise, attach a suction/discharge chamber with built-in soundproofing
→
materials. materials.
6) When the duct suction hole is located on the ceiling, consider the performance 6) When the duct suction hole is located on the ceiling, consider the performance
and noise levels. and noise levels.
→ → Foreign substances can clog the Foreign substances can clog the filter.
7) Obey the standard for fixing a duct. .
7) Obey the standard for fixing a duct
- Spiral 2.5m (0.5t), Flexible Duct fi - Spiral 2.5m (0.5t), Flexible Duct fixed within 1.0m.
- To prevent damage to flexible duct by the hanger band, insert a saddle or use a flexible duct - To prevent damage to flexible duct by the hanger band, insert a saddle or use a flexible duct
hanger (band). hanger (band).
8) Obey the duct insulation handling rules. 8) Obey the duct insulation handling rules.
- Air supply (SA) duct should be i - Air supply (SA) duct should be insulated.
- Suction unit (RA) duct should be insula - Suction unit (RA) duct should be insulated according to the on-site condition.
9) Duct's suction (diffuser/product) should have a filter attached to it. 9) Duct's suction (diffuser/product) should have a filter attached to it.
times or higher recommend
suction/discharge chamber containing soundproofing materials arge chamber containing soundproofing materials
xed within 1.0m.
nsulated.
100 100
recommended) ed)
problems
the duct design pressure standard
filter.
ted according to the on-site condition.
Installation guide Installation guide
ity) : 3 m/s or 3 m/s or less less
pressure standard