McQuay 5RT90BR Montageanleitung Seite 34

STEP 7
- Connect Belimo actuator, LF24-SR (item 1) with label 'RA' , which is now located at the assembly damper on the
front panel to terminal block with label 'RA' inside the junction box.
- There are four wires on the actuator with diff erent colours (black, red, green and white colours). Connect the
wires as below:
Black colour wire - connect to fi rst pole of
Red colour wire
Green colour wire - connect to third pole of
White colour wire - connect to fourth pole of
(You may refer to sticker wiring diagram which is
located on the front cover of junction box.)
Wrong wiring connection may cause the malfunction on actuator or economizer controller board or both. Tie the wires
with releasable cable ties under the junction box.
- Then, connect Belimo actuator, LF24-SR (item 1) with label 'OA' , which is now located at the assembly damper
on the side panel to terminal block with label 'OA' inside the same junction box. Follow the same method used
for wiring connection between actuator 'RA' and terminal block 'RA' . Next, attach the side panel to the unit. You
may need to do proper arrangement on the actuator wires by using cable ties (fi eld supply) before attach the
side panel to the unit.
STEP 8
- To build the rain hood, install the loose parts (metal parts) to the side panel. Before that, place the gasket (fi eld
supply) on the side panel for sealing purpose.
- Then, follow the installation sequence below to build the rain hood:
Gasket
Item 2 Item 6
Side panel with outdoor
air damper (item 2) which
is assembled to the unit
in step 7.
- It is recommended to seal off all the joints and gaps with weather-proof sealant (such as silicone, fi eld supplied
item) in order to ensure a water-proof fi nishing on the rain hood.
32
terminal block with label 'GND' .
- connect to second pole of
terminal block with label
'+24V' .
terminal block with label 'DCV' .
terminal block with label 'FB' .
Side panel in standard
unit which is removed in
step 5.
Item 7 Item 3
Item 6
TO PCB3 (ECO) TO PCB3 (ECO)
CN_ACT_RA CN_ACT_OA
TB RA TB OA
GND +24V DCV FB GND +24V DCV
ACTUATOR RA ACTUATOR OA
CAUTION
Terminal
block with
label 'RA'
- to be
connected
Junction
with
box
actuator
with label
'RA' .
Side panel comes with
economizer kit which is
assembled with actuator in step
6. Attach this panel to the unit.
Item 4 Item 5 Item 9
Item 3
Item 7
TO PCB3 (ECO)
CN_C02
Sticker wiring
TB C02
diagram on
FB GND +24V FB
the front cover
of junction
box
C02 SENSOR
Label 'RA' Label 'OA'
Terminal block with label 'OA' - to be
connected with actuator with label 'OA' .
Detail view of junction box
Item 8 Sealant
Item 4
Item 5
Item 9
Item 8