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6
Proto-Aire EZ UNIT NOMENCLATURE
The model numbers for Proto-Aire EZ units are shown on the legend in modular
form. The nomenclature is interpreted as follows:
MR
O
Z
The unit nomenclature is part of the UL code requirements and must
be included on the legend as well as the data plate for each unit.
3090249_D
P/N
3
21
M
T
K
Voltage K = 208/3/60; D = 208/1/60
Refrigerant: F = 407F; Q = 407A;
R = 449A; S = 404A; T = 448A
M = Medium Temp. L = Low Temp.
D = Dual (Split Suction Temp.)
Sum of Compressor Horse Power
Total Number of Compressors
Z = Scroll
O = Outdoor
MR = Proto-Aire EZ
Proto-Aire EZ I/O Manual
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