8
ACC-SVN156E-EN
Figure 8. Attach gasket to side block-off panel
a. Standard Economizer: If comparative enthalpy is
installed, attach the return air humidity (RAH) and
return air temperature (RAT) sensors to
intermediate block-off panel (item 5) and insert
bushing into hole provided on block-off panel.
Connect RAH wire harness onto RAH sensor and
route wires through bushing.
Note: See the Comparative Enthalpy Installation
Instructions (ACC-SVN172*-EN) for further
details.
Figure 9. Attach RAH & RAT sensors to block-off
panel (standard economizer)
RAT Sensor
RAH Sensor
Bushing
b. Low Leak Economizer: If comparative enthalpy is
installed only one sensor is required. Attach return
air temperature/humidity (RAE) sensor to
intermediate block-off panel (item 5) and insert
bushing into hole provided in intermediate block-off
panel. Connect RAE sensor harness to sensor and
route through bushing.
Note: See the Comparative Enthalpy Installation
Instructions for Low Leak Economizers
(ACC-SVN180*-EN) for further details.
Figure 10. Attach RAE sensor to block-off panel
(low leak economizer)
3. Attach one piece of gasket (item 9) to the base:
a. Standard Economizer: Align gasket with the return
air damper (RAD) bracket.
Figure 11. Attach gasket to base (standard
economizer)
b. Low Leak Economizers: Align gasket so it is
centered with the screw that secures the return air
damper to the return opening flange.
Installation
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