MAU Installation Manual
Page 3
1. When performing installation, servicing, or cleaning of the system, it is recommended to wear
safety glasses and gloves.
2. Make sure that all screws and electrical terminal connections are tightly secured before
operating the unit in case they may have loosened during transportation.
3. Protect the equipment with the appropriately sized circuit breaker or fuse.
4. Make sure the line voltage matches with that indicated on the unit’s nameplate.
5. The MAU must be grounded.
6. Switch off the power at the circuit breaker/fuse before installing, repairing, or cleaning the unit.
7. Make sure the unit is sized appropriate for the intended use. If the unit’s capacity is undersized
for the application, it could prematurely fail.
8. When notching or drilling into framing, rim joists, and wall studs, comply with code and
manufacturer limitations on allowable modifications to these structural members.
9. Maintain the minimum clearance distances indicated.
10. When cutting or drilling into wall or ceiling, do not damage electrical wiring or other hidden
utilities.
11. This unit must not in contact with water and must be protected from splashes. Do not use if any
part of the unit has been immersed. Moreover, do not turn it on or off when standing in water
or if your hands are wet.
12. The unit can be hot when in use, it may pose a burn risk even under normal operation. To avoid
burns, do not let bare skin touch any hot surfaces. Let the unit cool down for a before handling
or servicing it.
13. Do not block the intake air or discharge air ducts. This obstruction could lead to overheating,
which could result in a fire. Do not insert or allow foreign objects to enter any air duct as this
may cause electric shocks, fires, or damage to the unit.
14. It is not designed to be used or stored in wet areas or areas containing flammable liquids,
combustible materials, or corrosive chemicals.
15. It is the user’s responsibility to evaluate the frequency that the filter must be changed based on
the cleanliness of the environment it is operating in. An excessively dirty filter may lead to the
MAU malfunctioning which could cause a fire hazard.
16. A tripped high temperature limit control indicates that the unit has been subjected to abnormal
operating conditions. If the limit control continues to cycle on and off, then a qualified
contractor must examine the MAU to find out the source of the problem and repair it. If the unit
is damaged or defective, cut off power supply at circuit breaker/fuse immediately and do not
use the unit until it is repaired.
