Specifications

7.5 to 25 Ton Vertical and Horizontal
To mount the sensor:
1. Remove the four screws holding the return air sensor
mounting plate to the damper (see Figure 3).
2. Mount the sensor to the mounting plate using the two
No. 6-20 thread-forming screws (provided).
Wiring
3 to 6 and 7.5 Ton Vertical
To wire the sensor to the Logic Module:
1. Remove the strain relief from the damper.
2. Feed the wiring Enthalpy harness wires through the
opening with the existing control harness and replace
the strain relief furnished with the damper originally.
3. Route and attach the wiring harness with the other
harnesses on the damper using the tie wraps
provided.
4. Wire the sensor and Logic Module (see Figure 5 for
wiring).
5. Ensure the barometric relief dampers move freely.
6. Reconnect the electrical power supply.
Figure 4: 7.5 to 12.5 and 15 to 25 Ton Horizontal Economizer
Showing the Sensor Mounting Position
Figure 3: 7.5 to 12.5 and 15 to 25 Ton Vertical
Economizer with Enthalpy Sensor Installed
WIRE
HARNES
RETURN AIR
SENSOR
MOUNTING
PLATE
ENTHALPY
SENSOR
MOUNTED INSIDE
THE DAMPER
STANDARD
OUTDOOR AIR
ENTHALPY SENSOR
SENSOR
MOUNTING PLATE
KNOCKOUT PLUG
Note: The sensor mounting plate gets installed so
that the sensor resides in the return RA air
stream.
7 to 25 Ton Vertical and Horizontal
To wire the sensor to the Logic Module:
1. Remove the knockout plug from the mounting plate
(see Figure 4).
2. Feed the wiring harness wires through the knockout
opening and insert the strain relief provided to secure
the wires.
3. Route and attach the wiring harness with the other
harnesses on the damper using the tie wraps
provided.
4. Wire the sensor and Logic Module (see Figure 5 for
wiring).
5. Mount the sensor to the mounting plate using (2) 6-20
x
7
8
” screws. Secure mounting plate back to the
damper using the four screws removed in Step 1 of the
7 to 25 Ton Vertical and Horizontal section.
6. Reconnect the electrical power supply.
2 - DUAL ENTHALPY SENSOR UPGRADE KIT INSTALLATION INSTRUCTION
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