Ductwork - Napoleon P-E Série Instructions D'installation Et D'opération

4.8

DUCTWORK

4.8.1 Supply Air Ducting
BOTH SUPPLY AND RETURN AIR MUST BE DUCTED TO THE APPLIANCE FROM
ROOMS SEPARATE TO THE CLOSET ENCLOSURE HOUSING THE APPLIANCE.
SUPPLY AIR DUCT (PLENUM) CONNECTION MUST BE AT LEAST THE SAME SIZE AS THE
UNIT SUPPLY AIR OPENING. SEAL SUPPLY AIR DUCTWORK TO UNIT CASING, WALLS,
The ductwork should be sized and constructed in accordance with accepted industry standards:
The supply duct may be provided with a removable access panel to view the heat elements during unit
servicing. Note that a full inspection of the heat elements is made possible by the heating module being a
"pullout" module. It shall also specify that the cover attachment prevents leaks.
Proper airflow is required for the correct operation of this unit. Insufficient airflow may cause erratic
operation, could cause the unit to cycle on the high temperature limit, and may damage the heat
element. Excessive airflow may result in an excessively noisy duct system and may result in undesirable
consequences such as creating uncomfortable drafts. The total static pressure drop of the air distribution
system (including filters) should not exceed 0.5" wc. It is important to provide duct(s) that are sized
sufficiently to handle the larger air volumes for heating or cooling provided by this model.
Duct sizing and construction information may be obtained from:
• A.C.C.A. (Air Conditioning Contractors of America)
• A.S.H.R.A.E. (American Society of Heating, Refrigeration and Air Conditioning Engineers)
• H.R.A.I. (Heating, Refrigerating and Air Conditioning Institute (Canada)
• S.M.A.C.N.A. (Sheet Metal and Air Conditioning Contractors' National Association (United States)
All of the above professional organizations have duct sizing manuals available.
ALL RETURN AIR DUCTWORK MUST BE ADEQUATELY SEALED AND SECURED TO THE
UNIT WITH SHEET METAL SCREWS. TAPE THE SHEET METAL SEAMS IN THE VICINITY OF
THE UNIT WITH FOIL TAPE OR SIMILAR MATERIAL. WHEN THE UNIT IS MOUNTED ON A
PLATFORM WITH RETURN AIR THROUGH THE BOTTOM, IT MUST BE SEALED PROPERLY
THE FLOOR OR PLATFORM MUST PROVIDE SOUND PHYSICAL SUPPORT OF THE UNIT
WITHOUT SAGGING OR GAPS AROUND THE BASE. IT MUST ALSO BE SEALED BETWEEN
IMPORTANT
!
CEILINGS OR FLOORS.
IMPORTANT
!
BETWEEN THE UNIT AND THE RETURN AIR PLENUM.
THE SUPPORT AND THE BASE.
!
!
W415-2288 / 08.29.2019
25
IOM