1385, boul. Lionel-Boulet, Varennes, Québec J3X 1P7 Toll Free: 1 888 514-8007
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Tel: 438 338-1101
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Fax: 450 922-5900
www.nagasinnovation.com
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9.6.
Air Filters
Air Filter changing intervals can be based on the pressure drop across the filter or by calendar scheduling or
visual inspection. Scheduled intervals should be between one and six months, depending on the pollutant
loading from indoor and outdoor air.
See shop drawing for filter quantities, sizes and types. Use same size and type for replacement.
NOTICE
More frequent changes may be required during the economizer season.
CAUTION!
Do not operate without the bird screens installed, it prevents the entry of foreign objects such as leaves,
birds, etc.
Plugged or excessively dirty filters can cause damage to the equipment.
9.7.
Controls and sensors
Annually clean and recalibrate all controls, check for proper operation, and repair or replace any faulty
controls. Check all damper hardware settings every three months. Replace blown fuses with equivalent size
and type fuse. Failure to do so can result in damage to the unit.
9.8.
Outdoor air intakes, exhaust outlet, mixing sections, and dampers
Outdoor air intakes, outlets, screens, and adjacent areas shall be checked semi-annually for cleanliness,
integrity and proper operation. Adjust dampers where required.
9.9.
Snow accumulation
Clear snow away from units installed outdoors. Keep the snow clear of the ventilation air intake, combustion
air intake, and all access doors.
9.10.
Maintenance check list
CHECK
LIST
INSPECTION
WEEKLY
MONIHLY
SEMI·
ANNUALLY
ANNUALLY
Inspect the filters; replace them if necessary.
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Ensure that no flammable material is stored near the heater.
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Ensure that nothing obtrudes the air inlet and outlet of the heater.
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Check the flame and combustion quality.
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Check belts; adjust or replace them if necessary.
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Lubricate blower and motor bearings as needed.
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Ensure that the fresh air dampers are completely open.
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