McQuay ROOFTOP R08019034483, Руководство по установке

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1-12
(g) Unit Conversion
In the case of converting standard unit to down fl ow unit, follow the steps as stated below:
5RT90/120/150/180BR
Step 1 Step 2
Step 4 Step 3
Remove the side panel
Remove the Pulley Belt
Detached the
blower support
Detached blower
Remove screws
at both sides
For 5RT90BR:
The two side plates are screwed
on the blower support as shown
For 5RT120/150/180BR:
The two down fl ow structure
are screwed to blower
Cover the
horizontal supply
opening with the
blower support that
detached from the
blower.
Turn the blower to face bottom.
Screw at both sides.
Install back
the pulley
belt. Adjust
the belt
tension by
moving the
motor base.
Cover the horizontal
return opening with the
cover and screw tightly
Unscrew the vertical
return cover from the
base panel
Remove the side
panel at return side
Lastly, install back the side panel.
Install back the pulley belt. Adjust the belt tension.
Lastly, install back the side panel.
Note:
For down fl ow conversion, belt length will need to
be changed.
For unit with standard pulley, belt length
= a mm
Shaft to shaft Distance for down fl ow, C-C = b mm
5RT90BR 5RT120BR 5RT150BR 5RT180BR
a 1120 1180 1150 1362
b 380 410 380 460
IM 1 5RTBR-1209(0)-EN.indd 12 IM 1 5RTBR-1209(0)-EN.indd 12 1/14/10 11:37:22 AM 1/14/10 11:37:22 AM