27
AIR FLOW BALANCING
(CONT'D)
1
For this flow measuring station, cut
the duct and place the flow
measuring station between each
station. Make sure that the flow
measuring station’s air direction
arrow points in the direction of the
airflow. Secure the flow measuring
station with duct tape.
2
Before taking the reading, make
sure that the magnehelic gauge is
level and at 0. Refer to the flow
measuring station’s chart to
determine your unit’s airflow
velocity.
3
Adjust the damper until you reach
the desired velocity.
(damper should be 18” from grid)
Measure
here
Measure
here
18”
(457 mm)
18”
(457 mm)
• To avoid airflow
turbulence and incorrect
readings, the airflow
velocity should be
measured on steel
ducting a minimum of
18” (457 mm) from the
unit or elbow and before
any transition.
AIRFLOW STATION (GRID) METHOD
MAINTENANCE
The filters (4) need to be
checked and cleaned every
three months or when they
appear dirty. Wash in warm
sudsy water (mild detergent)
or use a soft brush vacuum.
The filters should be replaced
when they can no longer be
cleaned properly.
PRACTICAL
TIPS
• To prevent electrical shock,
check that the unit is
unplugged before doing any
repairs or maintenance.
•
A yearly inspection is
recommended to ensure the
efficiency and trouble-free
use of your system. Run
through the system
and verify the different
operating modes.
ENERGY RECOVERY CORE
FILTERS
The motor
- The motors are
factory balanced and lubri-
cated for life. They require
no maintenance.
The unit
- The inside of the
unit should be vacuumed
yearly. Be careful not to
damage any of the mechan-
ical components and electri-
cal connections.
CAUTION
MAKE SURE UNIT IS UNPLUGGED BEFORE ATTEMPTING ANY MAINTENANCE WORK
The following components should also be inspected regularly and well maintained.
Clean the Enthalpic core annually or as needed with a vacuum cleaner. Use a soft brush attachment.
Make sure the filters on the unit are cleaned. Failure to clean or use filters may damage the Enthalpic
core resulting in a void WARRANTY.
Note: The use of the Enthalpic core in adverse environment conditions such as dust, oil mist, exces-
sive kitchen grease, corrosive fumes, organic solvents, paint or any other harmful chemicals can
damage the Enthalpic core and in such void the warranty.
All filters (4) need to be checked regularly
The drain pan and drain line
- Units with drain lines should have their line and connec-
tion checked regularly.
Outside hoods
- The outside hoods need to be checked every season to make sure there
are no leaves or insects blocking the airflow. Check regularly that there are no pollutants
near the intake hood. Make sure they are clear of any snow accumulation during the win-
ter months.