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8-1. Cautions for Operation
Never fail to make the inspection opening at the specific place on the ceiling so you can perform the con-
stant cleaning or the equipment checking of filter and Heat Exchanger.
• The inspection opening shown below is necessary to clean the Heat Exchanger and the filter as re-
quired. If not cleaned, they are likely to get clogged, resulting in degradation of performance.
A
RA
SA
(Room Air)
(Supply Air)
Unit Body
EA (Exhaust Air)
OA (Outside Air)
Heat Exchanger
Note) Model VN-250SE has one Heat Exchange.
Model
VN-250SE
VN-350SE
VN-500SE
• This Energy Recovery Ventilators should be installed at the place where a larger space than the sizes
shown below can be secured for the ceiling space.
• Don't install it near the water-heater.
• Refrain from the following duct installing works.
(1) Excessive bending
8. INSTALLATION MANUAL (EXTRACT)
600
Maintenance Space
Inspection Opening : 450
(For the inspection of Filters,
Heat Exchanger, Fans,
Motors and Damper.)
Unit : mm
A
599
804
904
(2) Multi-times bending
A
RA
(Room Air)
Unit Body
EA (Exhaust Air)
Heat Exchanger
Note) Model VN-1KSAE has four Heat Exchange.
Model
VN-800SE
VN-1KSAE
Model
Ceiling Space A
VN-250SE
VN-350SE
320
VN-500SE
– 19 –
600
SA
(Supply Air)
Inspection Opening : 450
OA (Outside Air)
(For the inspection of Filters,
Heat Exchanger, Fans,
Motors and Damper.)
A
884
1134
Model
Ceiling Space A
VN-800SE
VN-1KSAE
(3) Making the connecting duct smaller
Maintenance Space
Unit : mm
Unit : mm
440
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