Daikin VKM50GAV1, Руководство по обслуживанию

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Si71-812 Control Functions
Control Functions 49
1.1.3 Automatic Selection of Ventilation Mode
Unlike the conventional total heat exchanger that only collects the heat on the exhaust air side
to the air supply side, the VKM unit monitors the cooling/heating operation mode and the set
temperature of air conditioners using microcomputer under the interlock control, and detects
indoor and outdoor temperatures under the independent control. In other words, the VKM unit
employs the automatic selection of the ventilation mode that automatically selects the total heat
exchanger ventilation mode or the normal (bypass) ventilation, according to the monitoring
aforementioned.
Operation automatically changes to the optimum pattern to suit conditions.
1.1.4 FRESH-UP Operation
Both the excessive supply mode and the excessive exhaust mode are selectable.
This function creates a more comfortable air environment.
Essential Setting
Changes
„
Setting changes should be made in the following way.
Mode No. : 18 (group tie up) or 28
Setting switch No.7
Setting position No.1~No.4
Refer to page 85.
Exhaust fan
Air supply fan DX-coil (cooling)
Damper
Heat exchanger element
(heat recovery)
EA
OA
RA
SA
Humidifying DX-coil (heating)
Heat exchanger element
(heat recovery)
EA
OA
RA
SA
EA
OA
RA
SA
Cooling In between (bypass ventilation) Heating
Automatic
changeover
Automatic
changeover
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)