INSTALLATION MANUAL - Daikin AC

6.2. Weather dependent precautions6.3. Selecting a location in cold climates■■■Select a place where the rain can be avoided as much aspossible.Since drain flows out of the outdoor unit, do not place anythingunder the unit which must be kept away from moisture.Ensure that water cannot cause any damage to the location byadding water drains to the foundation and prevent water traps inthe construction.1 If the water drainage of the unit is not easy, please build up theunit on a foundation of concrete blocks, etc. (the height of thefoundation should be maximum 5.9 inch (150 mm)).■■■NOTEWhen operating the unit in a low outdoor ambienttemperature, be sure to follow the instructionsdescribed below.To prevent exposure to wind, install the unit with its suction sidefacing the wall.Never install the unit at a site where the suction side may beexposed directly to wind.To prevent exposure to wind, install a baffle plate on the airdischarge side of the outdoor unit.2 If you install the unit on a frame, please install a waterproof platewithin 5.9 inch (150 mm) of the underside of the unit in order toprevent the invasion of water from the lower direction.NOTEMind the restrictions: refer to "6.4. Installing near a wallor obstacle" on page 53 If you install the unit on a building frame,please install a waterproof plate within5.9 inch (150 mm) of the underside of theunit in order to avoid the drainwaterdripping.■In heavy snowfall areas it is very important to select aninstallation site where the snow will not affect the unit:■When installing the unit in a place exposed to strong wind, payspecial attention to the following:1 Strong winds of 16.40 ft/sec (5 m/sec) or more blowing againstthe unit's air outlet causes short circuit (suction of discharge air),and this may have the following consequences:- Deterioration of the operational capacity.- Frequent frost acceleration in heating operation.- Disruption of operation due to rise of high pressure.- When a strong wind blows continuously on the face of theunit, the fan can start rotating very fast until it breaks.2 Refer to the figure below for installation of this unit in a placewhere the wind direction can be foreseen.■Install a baffle plate on the air discharge side of the outdoor unit:1 Construct a large canopy.2 Construct a pedestal.Install the unit high enough off the ground to prevent buryingin snow.126.4. Installing near a wall or obstacle11 Baffle plate■■Where a wall or other obstacle is in the path of the outdoor unitair intake or exhaust airflow, follow the installation guidelinesbelow.For any of the installation patterns below, the wall height on theexhaust side should be 47.24 inch (1200 mm) or less.NOTEMind the restrictions: refer to "6.4. Installing near a wallor obstacle" on page 5Wall facing one side>3.94 (100) >13.78 (350)■Set the outlet side at a right angle to the direction of the wind.Strong wind≤47.24 (1200)inch (mm)inch (mm)Walls facing two sidesBlown airStrong windinch (mm)inch (mm)>3.94 (100)>13.78 (350)>1.97 (50)>1.97 (50)Installation manual5ERLQ018~030BAVJUOutdoor unit for air to water heat pump4PW62590-1 – 07.2010