Acb Interface; Start-Up; Pre-Start Check; Drain Pump And Drainage Test - Carrier 40VMI Series Installation And Maintenance Instructions Manual

ACB Interface —
The ACB interface is a dry contact
board that can output up to four signals controlling devices.
Refer to Fig. 35 for connecting devices to ACB interface board.

ACB interface

CN50
FAN CTON HTON AUXH
MAX AMPS
MAX VOLTAGE
LEGEND
ACB — Auxiliary Control Board
AUXH — Output For Auxiliary Heat
CTON — Output For Cooling Operation
FAN — Output For Fan Operation
HTON — Output For Heating Operation
Fig. 35 —ACB Interface

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
current electrical codes.
7. Suction and liquid line isolation valves are in open
position.
Drain Pump and Drainage Test —
steps to perform the test:
1. Remove the test cover by rotating it counter-clockwise as
shown in Fig. 36.
Fig. 36 —Unlock Test Water Cap
2. Use a piece of tubing or pipe to fill the drain pump
reservoir with 70 oz. of water.
3. Turn the unit ON in cooling mode. The pump comes on.
Watch the end of the drain pipe for any water. It may take
time for the water to travel depending on the length of the
drain pipe.
4. During this test, check any bends or joints for leakage.
CN51
1A
24V
Follow these
Method to unlock
the test water cap
System Operation Check —
and pre-start checks are completed, follow these steps:
1. Using the 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
error 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
the 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
error 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

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.
To avoid equipment damage, do not attempt to reuse any
mechanical or electrical controllers that have been wet.
Replace defective controller.
:
EVERY 3 MONTHS
• Check air filter condition. Clean or replace if necessary.
:
EVERY 6 MONTHS
Follow 3-month maintenance schedule. In addition:
• Clean condensate tray with suitable cleaning agent.
• Clean the grille and panel.
:
EVERY 12 MONTHS
Follow 6-month maintenance schedule. In addition:
• Be sure all electrical connections are secure.
• Check condensate pump operation.
• Check heating and cooling action to confirm proper
operation.
17
Once the installation
CAUTION
CAUTION