McQuay 5RT90BR Montageanleitung Seite 32

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 4 is the one with label 'RA' .
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.
Circlip
Clamp
Details view for clamp
and circlip
STEP 5
- Remove side panel. Then, detach 4pcs metal bracket on front panel. Install the return air damper (item 11) +
support bracket, return air damper (item 10) + Belimo actuator, LF24-SR (item 1) which are already assembled
in step 3 and step 4 into front panel of the unit by using the same screw holes. Use screw M5x16 (item 13) for
fastening purpose.
Extend the return air sensor which is located inside the unit (on top of return air opening) to the outside area of the unit.
This can be done by routing the sensor through small holes on support bracket, return air damper (item 10). The sensor
is then located properly inside the return air duct by using the cable ties (fi eld supply). Failing to do so may aff ect the
performance of the unit and cause thermal discomfort to the users.
Use any three holes below on item 10 to route
the return air sensor to the outside of the unit.
Front view of item 10
30
2pcs of Nuts
(screw tightly)
a) Mount the actuator
to the shaft of damper,
then lock with circlip and
clamp.
Item 10 and item 11,
which are already
assembled in Step 3.
Remove side panel
Open the box.
Circlip
Clamp
Item 1 (with label 'RA')
b) Insert screw
M4x12, then bring
the support bracket
closer to the shaft
of damper. Note:
support bracket is
located on the top
of damper.
CAUTION
Front panel of
the unit
Front panel of
the unit
OR
Recognize the label on the wire. One of them
is indicated with 'RA' , while the other is 'OA' .
Labelled
with 'L'
symbol
Detail view for actuator
Top view for damper
12
110 Ø3
150
Support bracket
Fasten M4x16 screw on this hole, do
not fully insert the screw thread, but
insert only 2/3 of the thread.
Detach metal brackets
on front panel.
Item 1
Item 10 +
item 11
Mount item 1+ item10 +
item 11 into front panel.