Duct Work - Daikin FBQ20DAVMK Installation Manual

01_EN_3PN06583-10W.fm Page 14
• On completion of the drainage check, refer to the following illustration, and use the provided large
sealing pad (6) and heat insulate the metal clamp (1) and drain hose (2).

8. DUCT WORK

Pay the utmost attention to the following items and conduct the ductwork.
• Check that the duct will not be in excess of the setting range of external static pressure for the unit. (Refer
to the technical datasheet for the setting range.)
• Attach a canvas duct each to the air outlet and air inlet so that the vibration of the equipment will not be
transmitted to the duct or ceiling.
Use a sound-absorbing material (insulation material) for the lining of the duct and apply vibration insulation
rubber to the hanging bolts.
• At the time of duct welding, perform the curing of the duct so that the sputter will not come in contact with
the drain pan for the filter.
• If the metal duct pass through a metal lath, wire lath, or metal plate of a wooden structure, separate the duct
and wall electrically.
• Be sure to heat insulate the duct for the prevention of dew condensation. (Material: Glass wool or styrene
foam; Thickness: 25 mm)
• Be sure to attach the field supply air filter to the air inlet of the unit or field supply inlet in the air passage on
the air suction side. (Be sure to select an air filter with a duct collection efficiency of 50 weight percent.)
• Explain the operation and washing methods of the locally procured components (i.e., the air filter, air inlet
grille, and air outlet grille) to the customer.
• Locate the air outlet grille on the indoor side for the prevention of drafts in a position where indirect contact
with people.
• The air conditioner incorporates a function to adjust the fan to rated speed automatically. (11. FIELD SETTING)
Therefore, do not use booster fans midway in the duct.
Connection method of ducts on air inlet and outlet sides.
• Connect the field supply duct in alignment with the inner side of the flange.
• Connect the flange and unit with the flange connection screw (3).
• Wrap aluminum tape around the flange and duct joint in order to prevent air leakage.
Flange on air inlet side
(provided with the unit)
Screws for duct
flanges (3)
(accessory)
Insulation material
(field supply)
CAUTION
Connect the flange and unit with the flange connection screw (3) regardless of whether the duct is con-
nected to the air inlet side.
15
Thursday, March 24, 2011 9:03 AM
Make sure that the
seam faces upward.
4 mm max.
Air inlet Unit
Large sealing pad (6)
(accessory)
Metal clamp (1)
(accessory)
Flange on air outlet side
(provided with the unit)
Insulation material
(field supply)
Screws
Air outlet
for duct
flanges (3)
Canvas duct
(accessory)
(field supply)
English