Specifications

STEP 1:
Immediately upon receipt, all cartons and contents
should be inspected for transit damage. Units with
damaged cartons should be opened immediately.
If damage is found, it should be noted on the
delivery papers and a damage claim filed with the
last carrier. Compare carton(s) contents to
PACKAGE CONTENTS List (TABLE 1) above to
note any missing items.
STEP 2:
Remove RETURN COVER, PANEL – TOP LEFT,
and PANEL – LEFT BOTTOM SECTION from the
unit and retain for reuse (SEE FIGURE 1). Retain
screws.
STEP 3:
Remove screws from 3 sides of ROOF PANEL so
that it can be raised during economizer insertion.
NOTE 1:
Remove shipping bracket,  PERMANENT
FILTERS,  OA RAINHOOD - LEFT SIDE,  OA
RAINHOOD - RIGHT SIDE,  EXHAUST AIR
RAINHOOD - LEFT SIDE and  EXHAUST AIR
RAINHOOD – RIGHT SIDE from fresh air opening.
(SEE FIGURE 2).
STEP 4:
Remove jumper plug and slide economizer into unit
return air section (SEE FIGURE 2). After the
economizer is installed, connect unit
ECONOMIZER PLUG to economizer mating plug.
Save the jumper plug in this compartment for
diagnostic purposes.
2
FIGURE 1
RXRD-MDCM3 Shown - RRDX-MFCM3 Similar
DOWNFLOW RETURN OPENING
LEAVE THESE
SCREWS ENGAGED
RETURN COVER
FRONT SIDE
ROOF PANEL REMOVE
SCREWS FROM THREE
SIDES (FRONT, LEFT AND
BACK) EXCEPT AS NOTED
RE TURN COVER
CONTROLLER
FIGURE 2
A1011-01
A1010-01
FILTERS
LEFT PANEL - UPPER
(REMOVE TO BE REUSED
IN RAIN HOOD ASSEMBLY
LEFT PANEL - LOWER
(REMOVE TO BE REUSED
IN RAIN HOOD ASSEMBLY

ACTUATOR
WIRE HARNESS
ROOF PANEL
DOWNFLOW RE TURN OPEN ING
PLUG
FIL TERS
ECONOMIZER ASSEMBLY
FRONT SIDE
NOTE 1
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