KDK E50DZUA, Operation Instructions Manual, Page: 5 / 40

5
Operation Instruction
SPECIAL ATTENTION
Don’t use it in the following locations.
Locations exposed to high temperature
or direct flame.
Avoid installing the ERV in locations
where reach temperature of 40°C or
above. Using under high temperature
conditions may cause distortion of the
filter or heat exchange core or motor
burn-out.
40°C
Locations with high humidity.
Do not install in high humidity
locations such as bathrooms.
Dew occurred in unit may cause
electric shocks, short circuit, other
electric accidents and produce the
dewing water drops.
Locations with large amount of
cooking smoke.
The unit doesn’t work if the filter or
heat exchange core is clogged with
oil, it may cause fire.
Cooking
smoke
Indoor air inlet
Don’t install the unit in locations such as machinery or chemical plants where it will be
exposed to noxious gases containing acids, alkali, organic solvents, paint fumes, etc., to
gases containing corrosive ingredients, or where dust or oil mist will be produced. (Gas
poisoning, corrosion and degradation accrued in unit may cause the fire.)
USING CONDITION·CAUTIONS
■
Using condition
●
Outdoor air condition
Temperature range -10°C~+40°C, relative humidity 85% or less.
●
Indoor air condition
Refer to the indoor air condition of living room.
●
Installation requirements:
Same as the indoor air conditions.
Indoor air here means air in air-conditioned living rooms. The appliance
usage in refrigerators or other places where temperature can fluctuate
greatly. It is prohibited even if a temperature range is acceptable.
■
Be careful of frost and dew
As shown in the right figure, it’s supposed that a high temperature absorbing air condition A and a low
temperature absorbing air condition B are plotted on the air line figure, then a high temperature air A is
heat-exchanged by the unit and Point C represents the trend of saturation curve .In this case, it will cause
the dew or frost inside the unit. To avoid this, you are required to heat a low temperature air B up to B’ so
as to get C’ below the saturation curve before using the unit.
■
The Energy Recovery Ventilator manufactured by our company is conducted the condensation without the
water dropping test in the following conditions based on JIS B 8628:2003, if using condition is tougher than
the following sheet, it may cause the frost or dew.
JIS B 8628:2003 Energy Recovery Ventilator Appendix 5 (specification) condensation test method
Classific
ation
n o it i d n o c r o o d t u O n o it i d n o c r o o d n I
Operation
status
Measured
time (h)
dry-bulb
temperature
wet-bulb
temperature
*relative
Humidity
(reference)%
dry-bulb
temperature
wet-bulb
temperature
*relative
Humidity
(reference)%
Cooling in
summer
22°C 17°C 60 35°C 29°C 65 operate 6 hours
Heating
in winter
20°C 14°C 50 –5°C – – operate 6 hours
Heating
in winter
20°C 14°C 50 –15°C – – Stop 6 hours
Relative humidity is calculated according to JIS B 8628:2003.
Ab
sdut
e hum
id
ity (kg/kg')
B'
C'
A
Sa
tu
ra
tio
n
cu
rv
e
Dry-bule temperat ure (◦C)
C
B