Mitsubishi Electric t-NEXT DF DX 011 P1 S, Руководство пользователя, Страница: 65 / 92

t-NEXT DF DX
T_tNEXTDFDX_0719_EN
65
MEHITS S.p.A.
DATA BOOK
OPTIONAL ACCESSORIES: A272 – CL.0 or A1 (EN13501-1) INSULATION
The optional is designed TO SUPPLY THE PANELING ONLY WITH FIRE REACTION IN CLASS “0”
OR “A1 (EN 13501 - 1)” ; furthermore, allows a noise insulation of the panels of the air conditioners.
The pressure level reduction of the unit is about 2 dB(A). The reduction refers ONLY to the sound level
radiated from the unit or in front of the unit. The noise level data on return and delivery air do not
undergo reductions.
The accessory includes:
•
External part as standard panel.
•
Internal part in galvanized steel sheet.
•
The inside noise insulation with special soundproof material.
REACTION TO FIRE CLASSIFICATION
On Italian territory, the classification is per the D.M. of June 26, 1984 and subsequent amendments,
providing for a sort in "Classes" from 0 (non-combustible material) to 5 (extremely flammable material).
The EN 13501-1 regulation is ordered in classes from A1 (non-combustible material) to F (extremely
flammable material).
A comparison of the classes is not possible because the methods and evaluation criteria are completely
different. The comparison table below is being considered purely indicative.
Is possible to provide the sandwich panels for the OVER units with air flow from the top.
This implies that the air intake must necessarily be from the base of the unit with front blind paneling.
The accessory increases the unit weight:
SIZE E1 E2 E3 E4 E5 E6 E7 E8 E9
OVER
Weight increasing (1) kg 26 42 48 64 72 86 100 115 --
UNDER
Weight increasing (1) kg 30 48 55 70 86 110 130 145 165
1. Add this value to the total unit weight
Definition Italian classes EN 13501-1
Non-combustible material Class 0 A1
Combustible material, very limited contribution to fire Class 1 A2 – B
Combustible material, limited contribution to fire Class 2 A2 – B - C
Combustible material, medium contribution to fire Class 3 C – D
Combustible material, highly contribution to fire Class 4 E
Combustible material, easily flammable Class 5 F