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Once installation is complete, the supply and exhaust airfl ows should be balanced. This will ensure proper operation and a good quality
installation.
A well designed duct system with properly sized duct runs and equal static pressure losses of both the supply and exhaust will aid in
balancing the unit. However, it will be necessary to take fl ow measurements with the proper equipment to ensure a balanced system.
Before proceeding with balancing, all windows, overhead doors and walk-in doors should be closed and exhaust systems should be
turned off.
5.1 Bi-Monthly Maintenance
Risk of electric shocks. Before performing maintenance, always stop the unit, then turn power off at service panel.
The wearing of safety glasses and gloves is recommended when handling unit components to prevent injuries
caused by sharp edges.
Bi-monthly maintenance should include:
A
F
IR
ILTERS
The standard foam fi lters are washable. Under normal conditions it is recommended that they be cleaned every two months.
More frequent cleaning may be required under extremely dirty operating conditions. Use a vacuum cleaner to remove the heaviest
portion of accumulated dirt, then wash with warm water.
A medium effi ciency fi lter for the supply air stream is available from your supplier. This fi lter is disposable and should be replaced
when it becomes dirty.
D
P
I
RAIN
ANS AND
NTERIOR OF
With the fi lters removed from the unit, the foil faced insulation surfaces and the drain pans should be wiped clean with a soft cloth and
mild cleaning solution. Also ensure that the drain fi ttings are free from dirt and are draining freely.
4. Airfl ow Measurement and Balancing
2
VL0001
U
NIT
5. Maintenance
WARNING
!
B6LC and B12LC units
Washable foam fi lters
MEF fi lter - optional
7
1
1
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