250FC
Total Heat Exchanger
HRV (Heat Reclaim Ventilation)
4P586308-1 — 2019.06
Operation manual
5
6.
Indication of operation standby:
This icon indicates that the unit is precooling/preheating. The
unit's start-up is delayed until precooling/preheating is finished.
Precooling/preheating means that the heat reclaim ventilation
units are NOT started while linked air conditioners are starting
up, for example, before office hours.
During this period, the cooling or heating load is reduced to
bring the room temperature to the set temperature in a short
time..
7.
Indication of centralized control:
When a remote controller for air conditioners or devices for
centralized control are connected to the heat reclaim ventilation
units, this indication may be displayed.
While this indication is displayed, you may NOT be able to turn
the heat reclaim ventilation units on or off, or use the timer
function with the controller of the heat reclaim ventilation unit.
8.
Indication of air filter cleaning
When the display shows "
", clean the filter.
9.
Filter signal reset button
10.
Inspection button
Use this button only when servicing the unit.
11.
Schedule timer button:
/
or
.
This button enables or disables the schedule timer.
12.
Time adjust button:
.
13.
Programming button:
/
.
To set the timer
1
Press the schedule timer button.
2
Press the time adjust button to set the time.
3
Press the programming button to save the setting.
Independent operation of the HRV unit using the
Centralized controller (DCS302B61)
■
After selecting the zone where the only the
HRV
unit operation is
desired, press the operation mode selector and select "
"
VENTILATION
.
The
HRV
unit can then be operated
independently from the air conditioner.
■
When the
"FILTER" indication appears on the display, clean
the filter of the
HRV
unit. (Refer to the section
M
AINTENANCE
(
FOR
A
QUALIFIED
SERVICE
PERSON
ONLY
)
Maintenance for the air filter
Cleaning frequency
At least once every two years (for general office use)
(clean the element more frequently if necessary.)
1
Go into ceiling through the inspection hole, remove binding
metal of maintenance cover and take it off. (Refer to
2
Take out the heat exchange elements from the unit body. (Refer
to
)
3
To clean the air filter, lightly pat it with hand or remove dust with
a vacuum cleaner. If excessively dirty, wash it in water. (Refer to
4
If the air filter is washed, remove water completely and allow to
dry for 20 to 30 minutes in the shade. When dried completely,
install the air filter back in place. (Refer to
5
Install the maintenance cover securely in place.
CAUTION
Only a qualified service person is allowed to perform
maintenance.
During operation, never check or clean the HRV. It may
cause electrical shock and it is very dangerous to touch the
rotating part.
Be sure to turn off the OPERATION switch and disconnect
the power.
1
Maintenance cover
2
Binding metal
3
Hanging metal
1
Heat exchange element
2
Handle
3
Rail
4
Filter
CAUTION
1.
Do not wash the air filter in hot water.
2.
Do not dry the air filter over a fire.
3.
Do not subject the air filter to direct sunlight.
4.
Do not use organic solvent such as gasoline and
thinner on the air filter.
5.
Be sure to install the air filter after servicing.
(Missing air filter causes clogged heat exchange
element.)
The air filter is an optional item and the replacement is
available.
4PEN586308-1_2019_06.book Page 5 Wednesday, July 10, 2019 10:13 AM
