26 OCH0006F08/13/2024
CEILAIR
®
CW & DX IOM
2.4.3.2 ADVANCED STULZ E² CONTROLLER
90° / RIGHT ANGLE
IN/OUT
SAME FACESTRAIGHT-THRU
SUPPLY
AIR OUTLET
Figure 9. Ducted System Typical Air Patterns
2.4.3.2 Advanced STULZ E² Controller
If the optional STULZ E² controller is furnished, a separate manual is included in the unit data package
provided with the unit. The controller user interface display may be field mounted to a wall within the
conditioned space, or it may be located outside the conditioned space if desired. Refer to the supplemental
instructions provided with the mounting kit when mounting the controller display. When locating the display
panel, consider the length of wire needed. As an option, a 30 ft, 75 ft, or 150 ft long cable may be purchased
from STULZ.
2.4.4 Optional Equipment
NOTE Keep Panels Clear
Do not mount any optional equipment on the A/C unit’s access panels.
2.4.4.1 Condensate Pump (Field Installed)
If the unit was not purchased with the factory-installed condensate pump option, the shipped-loose
condensate pump should be mounted as near to the air conditioning system as possible. The inlet hole in the
pump must be below the lowest part of the drain from the A/C unit. The pump has two mounting supports so
it can be hung on an adjacent wall. Ensure that the pump is level for proper operation.
CAUTION
Always follow manufacturer’s instructions when field-installing a condensate pump. If manufacturer’s
instructions were not provided with the pump, contact STULZ product support for the pump
documentation, at (888) 5291266. Do not install the pump without first reading the manufacturer’s
instructions. Failure to exactly follow manufacturer’s instructions may on rare occasions result in serious
damage to the OHS unit and the surrounding facility.
A P-trap must be installed between the pump and the unit. The height of the trap must be a minimum of 2 in to
exceed the total static pressure of the system and ensure proper water drainage from the drain pan.