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Marvair Scholar III™ VAISA I&S Manual 03/2019 Rev. 8
1.07 CONDENSATE DRAIN LINE (ROUGH-IN)
A. The condensate drain line can be roughed in to drain the Scholar III™ heat pump or
air conditioner from either the back (outside) or the bottom (floor). The locations for
the condensate stub-outs can be determined from the cabinet knockouts identified in
Figure 3. The factory installed condensate connection within the cabinet is a female
PVC fitting designed for a 3/4” slip connection.
CAUTION
INSPECT THE FLEXIBLE CONDENSATE DRAIN LINE INSIDE THE SCHOLAR III™ UNIT
(WHEN INSTALLED) FOR POSSIBLE TUBING COLLAPSE. CORRECT AS APPROPRIATE.
1.08 WET HEAT (ROUGH-IN)
A.
Hot water coil
connections are made by dropping supply and return lines through
the knockout locations in the top of the plenums, as described in Figure 3 for the heat
pump. Access to the interior cabinet is through these factory-notched locations.
1.09 PREPARATION OF THE SCHOLAR III™ HEAT PUMP AND AIR CONDITIONER
WARNING
TO AVOID PERSONAL INJURY, ADEQUATE PROTECTIVE CLOTHING MUST BE WORN
AND PRECAUTIONS IN HANDLING AND INSTALLING THIS EQUIPMENT MUST BE
PRACTICED AT ALL TIMES.
After the rough-in is complete, the Scholar III™ heat pump or air conditioner and
accessories must be prepared for final installation prior to start-up. The following
items are to be completed prior to final installation.
A. Remove the two shipping screws that at the top and bottom of the front door.
B. Open the front door for access to the lag bolts that hold the shipping skids in place.
Unscrew the 4 lag screws. Note: access to the back right lag screw is easier through
the the condensate opening in the back panel beneath the outdoor air box. Remove
the shipping skids.
C. To facilitate moving the Scholar through doors, the out door air box can be removed.
To remove the outdoor air box, remove the 16 screws - 6 on each side and 4 along
the top. Remember to reinstall the outdoor air box before placing the Scholar into its
final position in the classroom.
D. If the base stand accessory was chosen, install the base stand in accordance with
installation instructions included with the base stand or see Appendix B at end of
manual.
E. Hot Water Plenum. The protective film on top of the Scholar III™ cabinet and on the
plenum must be removed to install the plenum. Fasten the plenum to the top of the
cabinet in accordance with the instructions included with the plenum or Appendix C at
end of manual.
F. Freeblow Plenum/Ducted Plenum. All Scholar III™ heat pump and air conditioners
use an electronically commutated (EC) blower motor to distribute the conditioned
air throughout the classroom. The EC motor automatically adjusts its speed to
maintain the proper air flow over a wide variety of external static pressures in an air
