PRECAUTION
About fresh air intake kit
•
The Fresh Air Intake Kit can be installed onto cassette type air conditioners.
•
The volume of ventilated air provided by the Fresh Air
regulations in all countries.
On such occasions we ask that this kit be used along with Energy recovery ventilators.
•
When intaking outside air please ensure correct air-conditioning design as based on air-
conditioning load calculations.
As outside air is not being processed an increase in outside air load can affect air conditioning.
Installation location
•
Area that generate substances that adversely affect the equipment, such as sulfuric
gas,chlorine gas,add,or alkalli it will cause the copper pipes and brazed joints to corrode,whitch
can cause refrigerant leakage.
•
Area with high salt content,such as at the seaside. It will deteriorate metal parts, causing the
parts to fall or the unit to leak water.
•
Be certain to use electric dampers and shutters to avoid infiltration of cold air, wind and fog
during shutdown in areas with cold climates, strong winds, or where fogs are common.
•
Please ensure the product is installed a distance of at least three times the duct diameter away
from exterior wall air inlets, or air exhausts for the prevention of short circuits.
Temperature conditions
•
Condensation may form on the product when outside air temperature is low, and the temperature
and humidity surrounding the product are high. Don't intake the air of below 32°F (0° C) into the
Fresh air intake kit.
•
The upper Iimit of the product's temperature range should respond to the outdoor temperature
range.
About duct fan
•
When installing the duct fan, connect the drive relay (
unit.
•
Please ensure the intake air volume is below 10% of the product's air volume HI. When
the intaken air volume becomes too large there the operating noise may increase and room
temperature detection may be affected.
About the duct connection
•
Procure a duct with internal diameter that fits the external diameter of the duct flange.
•
Please note that regulations of some countries may require the use of a nonflammable duct.
•
If the duct penetrates a fire-retarding division or other fire-proofing measures, the installation
of fire dampers, or a construction that does not adversely affect fire control measures is a
regulatory requirement of some countries.
•
When using metallic ducts please ensure metals (i.e., metal lath, wire lath, stainless sheeting) are
electrically insulated. (A short occurring by electrical connection can cause fire)
•
Please ensure to thermally insulate connected ducts to prevent condensation.
•
Please make certain that netting or other measures are installed in parts exposed to the outside
air to prevent infiltration of small animals such as birds and insects.
•
Please be certain to install external air filters to parts exposed to the outside air for heat
exchanger protection of indoor equipment.
•
Please avoid the infiltration of rain water by installing outside ducts with an incline of at least 1/30,
and fitting hoods on openings.
Intake Kit may be unable to fulfill ventilation
field supplied) and operate with the indoor
- (06 - 117) -
6. SYSTEM DESIGN