Air to Air Heat Exchanger with DX Coil Unit
Installation Manual
Air to Air Heat Exchanger with DX Coil Unit
Installation Manual
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16
Maintenance
Turn off the breaker before performing maintenance.
Running the Air to Air Heat Exchanger with DX Coil
Unit for a long period causes the filter or heat-
exchanger element to become clogged with dust. If the
filter or heat-exchanger element is clogged, the
ventilation amount is reduced and ventilation effect will
be deteriorated.
Clean the filter and heat-exchanger element regularly
according to the extent of dust accumulation.
WARNING
Before performing maintenance, stop the unit, then
turn off the breaker.
Otherwise, an electric shock or injury may result.
CAUTION
Wear protective gloves when performing
maintenance.
• Otherwise, an injury may result.
Maintenance of the filter and
heat-exchanger element
◆
Filter maintenance (Clean the filter
once or twice a year.)
1
Clean the filter if is indicated on the
remote controller.
2
Press the
button after cleaning the
filter. The indicator disappears.
1
Open the inspection cover.
Enter the ceiling cavity remove the screw of fixed
part of Inspection cover and remove the fixing
lever (support the inspection cover while removing
the lever), then open the inspection cover.
2
Pull out the heat exchanger elements.
Filters are attached to the heat exchanger
element. Hold the handle of the heat exchanger
element, then pull it out.
* 2 heat exchanger elements are equipped with
this unit.
CAUTION
The table below shows the weight of each heat
exchanger element. Handle the heat exchanger
element carefully so as not to drop it.
2
1
Model name
Weight (kg/unit)
Quantity
MMD-VNK502HEXE-TR
MMD-VN502HEXE-TR
2.9
2
MMD-VNK802HEXE-TR
MMD-VN802HEXE-TR
4.0
2
MMD-VNK1002HEXE-TR
MMD-VN1002HEXE-TR
4.0
2
Inspection cover
Fixing lever
Fixed part of
Inspection cover
Filters
High efficiency
filter
3
Remove the filters.
Remove the filters from the frame of the heat
exchanger element.
4
Clean the filters.
Clean the filters by dusting them or using a
vacuum cleaner. If the filters are badly clogged,
wash them by pressing them down in lukewarm
water with a neutral dish washing liquid.
5
Clean the high efficiency filters clean the
filters by using a vacuum cleaner.
NOTE
• Do not dry the filter with heat from a flame; otherwise,
deformation or deterioration of the filter may result.
• Light-up hours of the
indicator is set to [2500 H]. If
the filter is badly clogged, change the setting value.
• Do not soak the filter in water hotter than 60 °C;
otherwise, deformation or deterioration of the filter
may result.
Maintenance of the heat
exchanger elements (Clean
the heat exchanger elements
once or twice in 2 years.)
1
Clean the heat exchanger elements
Remove the dust on the surface of the heat
exchanger element using a vacuum cleaner.
NOTE
• Use a vacuum cleaner with a brush, and stroke the
brush gently on the heat exchanger element.
• Do not press the nozzle of the vacuum cleaner hard
against the heat exchanger element; otherwise, the
surface of it will be scratched.
• Do not wash the heat exchanger element in water.
Reinstallation after
maintenance
1
Attach the filters and High efficiency filters.
Attach the filters after they have completely dried.
Attach them to the frame of the heat exchanger
element as before.
High efficiency filters cannot be reused.Change them
at 2500 hours of use.
Heat exchanger
elements
Filters
High efficiency
filter
Filters
Vacuum cleaner
(with a brush)
Heat exchanger
element
(Corner)
Do not wash in water
Vacuum cleaner
(with a brush)
Heat exchanger
element
Filters
High efficiency
filter
49-EN
50-EN
+00ET99805001-2.book Page 25 Tuesday, July 26, 2011 1:39 PM
