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Toshiba VN-250SE Installation Manual page 4

Heat exchange ventilators
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FY250_CON-EN.fm Page 3 Friday, June 7, 2002 7:19 PM
Local Procurements
I Switches are to be locally procured.
We recommend that you use a switch having more than 3mm distance to break contact and more than 15A rated current.
Reference Sketch
Pipe Hood
OA
(Outside Air)
Use conditions
Outdoor air conditions: Temperature range – 10° C~40° C, relative humidity 85% or less
Indoor air conditions: Temperature range – 10° C~40° C, relative humidity 85% or less
Installation requirements: Same as the indoor air conditions
* Indoor air here means air in air-conditioned living rooms. Its use in refrigerators or other places where temperature can fluctuate greatly is
prohibited even if a temperature range is acceptable.
Example: Indoor air conditions
During cooling period: Temperature 27° C, relative humidity 50%
During heating period: Temperature 20° C, eelative humidity 40%
Outside Intake Duct
Ceiling Suspension Bolt
Room Intake Duct
EA
(Exhaust Air)
Room Intake Opening
(Supply / Exhaust Air Grill)
Heat Insulation
Exhaust Air Duct
Material
Pipe Hood
Supply Air Duct
RA
(Room Air)
Inside Supply Opening
(Supply / Exhaust Air Grill)
S A
(Supply Air)
3

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