EMI WLHG09 - Initial Start-Up

WLCG/WLHG High-Wall Air Handlers
• Installation, Operation and Maintenance Manual •
P/N 240008111, Rev. G [06/18/10] 19
Initial Start-Up
Unit-mounted controller
operation
Select Remote ermostat OFF in the con-
guration. For operating details, see informa-
tion beginning on page 25.
e EMI Series controller can operate the unit
in cooling, heating (when equipped) or auto
changeover mode. Setpoint temperature can
be either manually set or allowed to follow
pre-programmed (7-day) seings. (See Fig-
ure 29, Page 23) for more information.
e controller provides diagnostics with an-
nunciation and includes sensors to prevent
short cycling and other benets as explained
on page 32.
Adjust and congure the unit using the key-
pad (see Figure 26, Page 20).
e unit can be operated with either the key-
pad or the optional infrared remote control
(Figure 27, Page 21).
Before operating the unit, use the informa-
tion in (Figure 28, Page 22) and (Figure 29,
Page 23) to congure and set up the control-
ler.
Wall thermostat operation
Select Remote ermostat ON in the congu-
ration. (Figure 28, pg. 22)
See page 29 for setup and operation when
using a wall thermostat.
e unit must be congured for wall ther-
mostat operation as described in (Figure 28,
Page 22.
NOTICE
Operation of the unit depends on the
room temperature. It may be necessary
to warm the room before testing the
unit’s cooling abilities.
Before starting the unit
NOTICE
Check the outdoor unit’s start-up in-
structions for specic requirements and
procedures.
Remove any tools or other obstructions.1.
Be sure the lter is in place.2.
Verify that the unit is level and plumb.3.
Separate any refrigerant lines that contact 4.
each other.
Replace the cabinet end cap and the grille 5.
front of the unit.
Test each power and circuit connection 6.
before powering up the system.
Congure the controller per Figure 28, 7.
Page 22.
Make set-up adjustments as needed us-8.
ing Figure 29, Page 23. Use Test mode if
desired to reduce start-up time.
Use the unit-mounted electronic con-9.
troller to start the system. (Set remote
thermostat to OFF in the controller con-
guration, Figure 28, Page 22.)
Connect wall thermostat wiring (if used) 10.
after initial start-up. (This requires re-
setting the remote thermostat option
to the “ON” configuration, Figure 28,
Page 22.)
Cycle the unit several times in each mode 11.
to ensure the system and components are
operating correctly.