McQuay M5WSS Manuel d'installation Page 29

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26
Short Duct Specification
Applicable for M5CKWS-AR Series Only
The indoor unit is provided with air discharge and air intake “knock-out” hole for duct connection. However
the connection of the short duct for air discharge is possible on only one side.
The use of short duct for air discharge will improve air flow distribution if there is an obstruction (such as
alighting fixture) or in a long, narrow room or an L-shaped room. It is also used for air-conditioning of two
rooms simultaneously.
Possible Direction for Air Discharge and Air Intake
Possible Opening Dimension For Duct Connection
A
IR INTAKE
AIR DISCHARGE
AIR DISCHARGE
A
IR DISCHARGE
AIR DISCHARGE
Note: 1. Avoid to use the short duct on which the air discharge grille can be completely closed,
to prevent evaporator freezing.
2. In order to prevent condensation forming, be sure that there is sufficient thermal
insulation and no leakage of cool air when installing the short duct.
3. Keep the introduction of fresh air intake within 20% of total air flow. Also provide a
chamber and use a booster fan.
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