How To Use Psychrometric Chart - Daikin VAM-FA8VE Technical Data Manual

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11.5 How to use Psychrometric Chart

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• HRV • VKM-GA(M)V1
Bend located too close to the fan
To install a bellows, it should not be expanded near the connection
Each local rule or regulation may have different requirements for
bellows. For details, consult the authorities.
Connection to an aluminum flexible duct.
Bend located too close to the fan
Deformed flexible duct may not permit the shutter to open completely.
•
Depending on the room structure, the noise may increase by 8 to 10 phons due to echoes and/or other
factors.
•
To avoid entry of rainwater, exhaust ducts extending outside should be inclined down by 1/100 or larger.
•
To use a two-room ventilating fan for a bathroom and other room, install the fan in the bathroom. Two-
room ventilating fans are designed so that the air flow through the main opening on the fan is about twice
larger than that through the sub opening (for cases where the distance between the main and sub
openings is about 1 m). However, this air flow proportion can be adjusted by moving the air flow
adjusting plate located on the grille of the main unit.
<Toilet>
•
Components that constitute the ceiling should be strong enough to prevent vibration and sympathetic
sounds.
Recommended material : gypsum board, cement excelsior board, fiber board
•
Exhaust duct ends should be fitted with a vent cap or weather cover to prevent rainwater entry and bird
nesting.
•
In cold weather areas, the ducts should be thermal-insulated.
In cold weather areas, or in winter, condensation may occur due to the
difference in temperature between the duct surroundings and living room. To
avoid condensation, the ducting and their connections should be thermal-
insulated.
•
Local rules and regulations may have special requirements for fire dampers and bellows. For details,
consult the authorities.
•
For bathrooms, use ventilating fans specially designed for bathroom use. Never fail to earth the fan.
•
Electric wiring should be done by a qualified electrician (electric engineering firm). High-voltage
connections are dangerous.
• HRV • Heat Reclaim Ventilation
Duct
Bending the duct near the shutter frame
may not permit the shutter to open
completely. To avoid this, there should be
Fan
a distance of minimum 150 mm between
the bend and shutter.
Bellows
Fan
Fan
Avoid deformation
Sub opening
Sub opening
(bathroom)
(toilet)
Main unit
(bathroom)
Insulation