Sound Data - Johnson Controls (H,Y,C)IDM048B21E Engineering Manual

DUCTED MEDIUM STATIC (ECONOFRESH)

2.14 Sound Data

Model: (H,Y,C) IDM030B21E
with EF-456NE
(H,Y,C)
Model: (H,Y,C) IDM048B21E
with EF-456NE
NOTES:
1. The sound pressure level is based on the following:
Measurement Point: 4.9 ft. (1.5m) beneath the unit.
2. The above data was measured in an anechoic chamber so that reflected sound should be taken into consideration in the field.
3. Above figure shows when the EconoFresh Pressure Mode is selected on the wired controller, damper opening is OA 50% and
RA 50% and at rated airflow volume.
2-12
(H,Y,C)
Model: (H,Y,C) IDM036B21E
with EF-456NE
TC-16004-rev.2