Manual 2100-749
Page
9 of 68
5. Press ENTER key to save and scroll to next
parameter.
6. Press ESCAPE key until Main Menu screen is
displayed.
FIGURE 6
Unit Air Path Information
FIGURE 5
MEGA-TEC Air Paths and Refrigeration Circuits
MIS-4034
RIGHT HAND
CIRCUIT 1
LEFT HAND
FRONT VIEW
CIRCUIT 2
A
FIGURE 4
Cool and Heat Setpoints
Information
The information screens are used as a quick reference to
show unit A/C circuit measurements and program version.
Air Path Information
MEGA-TEC Series wall-mounted 15 ton air conditioners
use two separate air paths: Air path 1 is tied to A/C
circuit 1 and is located on the left side of the unit when
viewed from the outdoor side and air path 2 is tied to
A/C circuit 2 and is located on the right side of the unit
when viewed from the outdoor side (see Figure 5).
Both air paths share a single return air temperature
sensor located in the return duct opening, but each
air path has its own mixed air temperature sensor and
supply air temperature sensor.
Unit air path and outdoor conditions can be found on
three screens within the information menu (see Figure
6). The information and measurements provided are
return air temperature, air path specific mixed air
temperature (economizer-equipped units only), air path
specific supply air temperature, air path specific blower
speed, affiliated A/C circuit condenser fan speed and
damper position (economizer-equipped only). Outdoor
conditions provided include outdoor temperature,
outdoor humidity, calculated outdoor dew point, dust
concentration (economizer-equipped units only with
dust sensor enabled) and damper position (economizer-
equipped units only).
A/C Circuit Information
MEGA-TEC Series wall-mounted air conditioners have
two separate refrigeration circuits: Circuit 1 is located
on the left side of the unit and circuit 2 is on the right
side (see Figure 5).
