Air to Air Heat Exchanger with DX Coil Unit
Installation Manual
Air to Air Heat Exchanger with DX Coil Unit
Installation Manual
– 26 –
EN
2
Attach the heat exchanger elements.
Install the heat exchanger elements as before.
NOTE
Attach the filters. If you use this unit without them, the
heat exchanger elements will become clogged and a
breakdown may result.
3
Attach the inspection cover.
Fit the fixing lever to the inspection cover to attach
it securely and fix the fixed part of Inspection cover
with a screw.
Cleaning remote controller
• Wipe with a dry, soft cloth.
• Do not use benzine, thinner, scouring powder,
chemical cloth, etc. as those may cause deformation
or breakage.
Maintenance and safety
Checks (for installers)
Ask the dealer to carry out the following safety checks
once a year for your continued use of our product.
• Turn off the circuit breaker in the power distribution
panel before starting safety checks.
• Do not use any detergent or the like when cleaning
the humidifier. (VNK type only)
* A small amount of water may come out because of
condensation. This is not unusual.
◆
Preparation for cleaning
1
Close the service valve. (VNK type only)
(For preventing water remaining inside from
spattering)
2
Prepare for water leakage. (VNK type only)
Water inside the humidification element will spill
out. Take measures for water leakage, such as
laying a plastic sheet.
3
Drain water remaining in the pipes. (VNK
type only)
Open the drain valve and catch water using a
bucket or the like.
Filters
High efficiency
filter
Inspection cover
Fixing lever
Parts to
check
Safety
checks
Actions
Possible
failures
Items to be
checked
Strainer
(VNK type
only)
Clogging with
dust
Clean the strainer
if it is clogged.
No
humidification
Damage of the
O-ring
Replace the ring if
it is damaged.
Water leakage
Humidification
element
(VNK type
only)
Water leakage
from the
surface of
humidification
element
Replace the
humidification
element if water
squirts out of the
surface of
element.*
Water leakage
Dust and dirt on
the surface of
humidification
element
Vacuum the
element if the air
way is blocked
with dust. (Take
care not to
damage the
surface of
element.) or,
wash the element
with water
according to the
instructions on
page 25.
Reduced fan
power
Reduced
humidification
performance
Drain pan
Dust and dirt on
the surface of
drain pan
Clean with a cloth
if there is dust and
dirt on the drain
pan.
Water leakage
Screws
Maintenance
cover (for the
humidification
element)
Maintenance
cover (for the
humidification
element)
Service valve
Drain pipe
Drain valve
4
Detach the maintenance cover (for the
humidification element)
Loosen the six screws that fasten the maintenance
cover, then detach it.
◆
Cleaning the strainer (filter) (VNK
type only)
1
Pull the heat insulator of strainer and turn it
upward.
2
Turn the strainer cap counterclockwise to
detach.
3
Clean the filter with water.
4
Re-attach the strainer cap.
◆
Detaching the humidification
element (VNK type only)
Remove the spacer
1
Pull out the spacer by taking the hold.
Detach the water supply tube from the
humidification element
1
Pinch the tabs of the hose band of the water
supply tube attached to the front
humidification element to displace, then
detach the water supply tube.
NOTE
• Do not detach the water supply tube from the reducing
valve.
• Detach the water supply tube and point it toward the
drain pan inside the unit so that water falls into the
drain pan.
Maintenance cover (for the
humidification element)
Screws
Detach
Heat insulator of strainer
Strainer
Filter
Strainer cap
Spacer
Humidification element
Hose band
Water supply
tube
51-EN
52-EN
+00ET99805001-2.book Page 26 Tuesday, July 26, 2011 1:39 PM
