5
2.1.4 - Codification
42EM 1 0 A XXX...
Unit size (chassis)
(1, 2 or 3)
Fan motor assembly size
(0, 1, 2 or 3)
Chassis and insulation type
(A, B, C or D)
A = modular model with standard insulation
B = modular model with insulation class 0 in accordance with BS 476, part 6 and 7 and metal spigots
C = compact model with standard insulation
D = compact model with insulation class 0 in accordance with BS 476, part 6 and 7 and metal spigots
Return air plenum
or sound damper
Size 1.0
Sizes 2.0, 2.1, 2.2, 2.3
Sizes 3.0, 3.1, 3.2, 3.3
Modular chassis types A and B
Compact in-line-chassis types C and D
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