Daikin VAM-FA8VE, Technical Data Manual

Page: 163 / 282

2
5
• HRV • VKM-GA(M)V1
• HRV
•
Heat Reclaim Ventilation
161
5.7.3 Fresh-up Operation
Both the excessive supply mode and the excessive exhaust mode are selectable.
This function creates a more comfortable air environment.
5.7.4 Proprietary Developed HEP Element
The heat exchanger element uses a High Efficiency Paper (HEP) that has superior moisture-absorption
and humidifying properties and doubles the current efficiency of moisture absorption. The heat exchanger
unit speedily recovers heat contained as latent heat (vapor). The element is made of a material with
superior flame-resistant properties and is treated with an anti-molding agent.
Features
•
High air shielding
Even in the conventional less humidity conditions, maintaining the features of the material that can get
excellent moisture permeability, we have achieved high air shielding, by special processing in the step of
milling paper.
•
Polymer material that inhibits air permeability that treated on the surface of the heat exchanger
element restrains air permeability.
Supply Fresh-up
(Excessive outdoor air supply)
Exhaust Fresh-up
(Excessive exhaust air supply)
Detail
Supply air volume can be set at a higher level
than the exhaust air by the remote controller. Exhaust air volume can be set at a higher level
than the supply air by the remote controller.
Major
effects
•
Prevents inflow of toilet odor
•
Prevents inflow of outdoor air in winter
•
Prevents outflow of airborne bacteria from
rooms in a hospital
•
Prevents outflow of odors from rooms in a
nursing home
Application Offices, etc. Hospitals, Nursing homes, etc.
Example
Air supply
Normal
ventilation fan
Air exhaust
HRV
(VKM) Portion of fresh-up
operation
Portion of
exhaust
operation
Air supply
Air exhaust
Sick room Floor area
HRV
(VKM)
HEP anti-molding
30.6˚C
62% RH
27.4˚C
63% RH
26˚C
50% RH
Integrally-formed liner
Indoor
SA
RA
Outdoor
32˚C
70% RH
Integrally-
formed liner
Temperature
and humidity
RA
SA
Operation of the heat exchanger element
(HC0013)
Highly humid air
Less humid air
Moisture permeability mechanism
Moisture absorption
Move through capillary
Moisture release
Air component
Water vapor
Polymer material
that inhibits air
permeability
Moisture absorbing liquid