Servicing Units Void Of Charge; System Refrigerant - Century Comfort-Aire RSG1618S1P Service Manual

Servicing Units Void of Charge

If the outdoor unit is void of refrigerant, clean the system
using the procedure described below.
1. Leak check system using procedure outlined on Page
24.
2. Evacuate the system using procedure outlined on
Page 24.
3. Use nitrogen to break the vacuum and install a new
filter drier in the system.
4. Evacuate the system again using procedure outlined
on Page 24.
5. Weigh in refrigerant. Refer to data plate and line set
length for proper charge.
GAUGE SET
CONNECTIONS FOR TESTING AND CHARGING
AClose manifold gauge set valves and connect the
center hose to a cylinder of HFC-410A. Set for
liquid phase charging.
BConnect the manifold gauge set's low pressure
side to the suction line service port.
CConnect the manifold gauge set's high pressure
side to the liquid line service port.
DPosition temperature sensor on liquid line near
liquid line service port.
508228-01
B
SUCTION LINE
SERVICE PORT
CONNECTION
REFRIGERANT TANK
CHARGE IN
LIQUID PHASE
DIGITAL SCALE
LINE SERVICE
D
TEMPERATURE
SENSOR
Issue 2136

System Refrigerant

This section outlines procedures for:
1. Connecting gauge set for testing and charging;
2. Checking and adjusting indoor airflow;
3. Adding or removing refrigerant.
MANIFOLD GAUGE SET
HIGH
LOW
A
C
TEMPERATURE SENSOR
(LIQUID LINE)
TO LIQUID
VALVE
OUTDOOR UNIT
Page 25 of 29