McQuay 5RT90BR Montageanleitung Seite 37

Use any three holes below on item 12 to route
the return air sensor to the outside of the unit.
Front view of item 12
STEP 6
- Mount 1pc Belimo actuator, LF24-SR (item 1) to the side panel with outdoor air damper (item 2). Align and insert
the hole of actuator to the shaft of the damper.
The default setting for outdoor air damper (item 2) shall be fully closed. Ensure this damper is in 'fully closed' position
before mount the actuator. Fail to do so will cause errors during the unit normal operation.
The surface of actuator which is facing upward/ outside shall be labelled with 'R' symbol to ensure the rotation of actuator
modulation in counter clockwise direction. Fail to do so will cause errors during the operation of unit with economizer
function.
There are 2pcs of Belimo actuator, LF24-SR (item 1) in economizer kit which come together with carton boxes.
Open the boxes and recognize the label on the wire. The actuator used in step 6 is the one with label 'OA' .
2pcs of item 1 in
carton boxes.
- Then, fastens 1pc screw M4x12 (item 14) on the support bracket of the damper. Do not fully insert the screw
thread, but only insert up to 2/3 of the screw thread. Mount the actuator to the support bracket by bringing the
support bracket closer to the shaft of damper. The function of screw M4x12 is to lock the actuator from slippery
during modulation.
- Next, put the clamp into the shaft and lock the actuator with circlip. Fasten the nuts of clamp tightly by using
adjustable spanner. Noted that clamp and circlip come together with actuator as the standard parts, you may
fi nd these parts inside the actuator box.
Conduct unit conversion.
Then, mount item 1+ item 11 + item 12 into indoor base panel as shown below:
Remove side
panel
Indoor base panel
of the unit
CAUTION 1
CAUTION 2
Open the box.
Item 11
Mount item 1+ item11 +
item 12 into indoor base
panel.
OR
Recognize the label on the wire. One of them
is indicated with 'RA' , while the other is 'OA' .
Item 1
Item 12
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