TM_ELF-D_R1E
ELF - E
LECTRONIC
L
OW
F
LOW
A
IRFLOW
/T
EMPERATURE
M
EASUREMENT
ELF
DUAL ANALOG OUTPUT
/D
SERIES
EBTRON
, Inc. 1663 Hwy. 701 S., Loris SC 29569
•
Toll Free: 800.2
EBTRON
(232.8766)
•
Fax: 843.756.1838
•
Internet:
EBTRON
.com
6
ELF INSTALLATION
The ELF is designed for use in smaller ducts (up to 16 inches) and in VAV terminal box applications in an environment
between -20°F to 120°F (-28.9° C to 48.9° C) where it will not be exposed to rain or snow. ELF airflow measurement
station sensor probes are designed for insertion mounting through one side of the duct or VAV box. Mount the instru-
ment in an accessible location to permit set up. Locate the instrument so that the attached instrument cable will reach
the customer provided BAS control interface.
CAUTION
The installed location of the ELF is critical for proper performance. Refer to the
previous Minimum Placement Guidelines section of this document to
determine the exact location recommended for the ELF.
The installed accuracy of the ELF is ensured in applications where the
maximum inside duct dimension is 16 inches or less. Applications in larger
duct sizes may degrade accuracy. Consult factory for these applications.
Ensure that adequate clearance exists to permit insertion of the probe, and to
allow clearance for the instrument enclosure.
External duct insulation that interferes with mounting should be temporarily
removed prior to installation. Mounting requires a 0.875 inches (22.2 mm)
hole on the insertion side of the duct.
1.
Determine where the ELF airflow measuring station is to be located as indicated on the engineer's plans.
2.
Carefully open the ELF package and inspect for damage. If damage is noted, immediately file a claim with carrier.
3.
Locate and mark the point on the duct or VAV box where the probe will be inserted, using the previous Minimum
Placement Guidelines section of this document. Refer to Figures 3 and 4 for ELF dimensions and probe orientation.
4.
Using a 0.875 inches (22.2 mm) hole saw, drill the insertion side hole where marked.
5.
Place the probe through the mounting hole, making sure that the gasket is seated firmly against the integral mount-
ing bracket. Ensure that the edge of the ELF mounting bracket is parallel to the edge of the duct or VAV terminal
box, and that the airflow arrow printed on it is oriented in the direction of actual airflow. Ensure that the gasket is
firmly seated against the bracket, and then fasten the mounting bracket at the four mounting holes using appropri-
ate sheet metal screws.
6.
Route the ELF instrument cable to the customer provided BAS interface. Refer to the following sections of this doc-
ument for instrument set up and operation.
Figure 3. ELF Installation Dimensions
Mounting Bracket Detail View
ELF Sensor Probe/Transmitter Detail Views