Carrier WeatherExpert 48N2 Controls, Start-Up, Operation, Service, And Troubleshooting page 172

Units With Humidi-MiZer® Adaptive Dehumidification System
NOTE: All circuits must be running in normal cooling mode. In-
door airflow must be within specified air quantity limits for cool-
ing. All outdoor fans must be on and running at normal speed.
Use the following procedure to adjust charge on Circuit B of
Humidi-MiZer equipped units:
1. Start all compressors and outdoor fans. Allow unit to run
for 5 minutes.
2. Switch system to run in a Dehumidification mode for 5
minutes by switching RHV to ON through the Service Test
function (Service Test  COOL  RHV).
3. At the end of the 5-minute period, switch back into Cool-
ing mode through the Service Test function (Service
Test  COOL  RHV) by switching RHV to OFF.
4. Using the cooling charging charts provided (Fig. 56-77),
add or remove refrigerant until conditions of the chart are
met. As conditions get close to the point on the chart, add
or remove charge in
paragraph "To Use the Cooling Charging Chart" for addi-
tional instructions.
5. If a charge adjustment was necessary in Step 4, then repeat
the steps in this paragraph (starting with Step 2) until no
charge adjustment is necessary. When no more charge
adjustment is necessary after switching from a Dehumidi-
fication Mode to a Cooling Mode (Steps 2 and 3), then the
charge adjustment procedure is complete.
172
/ -lb increments until complete. See
1
4