8
CENTRAL CONTROLLER — The central controller is
connected to the indoor unit through outdoor unit with 3-core
shielded cable (see Fig. 8). For setup instructions, refer to the
controller installation manual.
START-UP
Pre-Start Check —
Once installation is complete, make
the following pre-start checks:
1.
All indoor and outdoor units are properly installed.
2.
All piping and insulation is complete.
3.
All electrical connections (both power and control) are
properly terminated.
4.
All condensate drains are installed correctly.
5.
The power supply is of the right voltage and frequency.
6.
The units are properly grounded in accordance with cur-
rent electrical codes.
7.
Suction and liquid line isolation valves are in open posi-
tion.
System Operation Check —
Once the installation
and pre-start checks are completed, follow these steps:
1.
Using remote controller, select cooling or heating mode
to check the operation of the system.
2.
While the system is in operation, check the following on
indoor unit:
a. Switches or buttons on the remote controller are easy to
push.
b. Indicator light is showing normal operation and no er-
ror is indicated.
c. Swing mode of air louvers is working (if applicable to
unit).
d. Drain pump operation is normal (if applicable).
e. No abnormal vibration or noise is noticed.
3.
While the system is in operation, check the following on
outdoor unit:
a. No abnormal vibration or noise is noticed.
b. Condenser fan is in operation.
c. Indicator light is showing normal operation and no er-
ror is indicated.
NOTE: If the unit is turned off or restarted, there is a time
delay of 3 minutes for the compressor to start from the time the
power is restored.
MAINTENANCE
EVERY 3 MONTHS:
• Check the air filter condition. Clean or replace if neces-
sary.
EVERY 6 MONTHS — Follow 3-month maintenance sched-
ule. In addition:
• Clean condensate tray with suitable cleaning agent.
• Clean the grille and panel if applicable.
EVERY 12 MONTHS — Follow 6-month maintenance
schedule. In addition:
• Be sure all electrical connections are secure.
• Check condensate pump operation if applicable.
• Check the heating and cooling action to confirm proper
operation.
INDOOR UNIT
DISPLAY PANEL
5-CORE CABLE
5-CORE SHIELDED CABLE
INDOOR UNIT
ELECTRIC CONTROL BOX
INDOOR UNIT
ELECTRIC CONTROL
PANEL
WIRED CONTROLLER
BACK
A40-1714
5-CORE CABLE
Fig. 7 — Remote Wired Controller
(Non-Programmable) Wiring
X Y E F1 F2 E
FORCED ON
EMG. STOP
R
C
TO INDOOR UNIT
X,Y,E
DAISY CHAIN
NOT USED
FORCED
ON
SWITCH
EMERGENCY
STOP
SWITCH
24 VAC
a40-1774
Fig. 8 — Central Controller Wiring
CAUTION
When servicing or repairing this unit, use only factory-
approved service replacement parts. Refer to the rating
plate on the unit for complete unit model number, serial
number and company address. Any substitution of parts or
controls not approved by the factory will be at the owner’s
risk and may result in equipment damage.
CAUTION
To avoid equipment damage, do not attempt to reuse any
mechanical or electrical controllers that have been wet.
Replace defective controller.
