CellarPro AIR HANDLER 6500 HORIZONTAL, 7090 - Manual (Page 20)

20
Split System Line Sizing Chart
Suction Line Size by Length ("ODS)
Model
Liquid Line
Size ("ODS)
Up to 100
feet
Minimum
Suction Line
Insulation
Thickness
(in)
Up to 25 feet
Over 25 feet
up to 50 feet
Over 50 feet
up to 100 feet
AH6500S 3/8 1/2 1/2 5/8 5/8
AH8500S 3/8 5/8 5/8 5/8 7/8
Notes:
1) Line lengths are expressed in equivalent feet = actual run length + fitting allowances.
2) Chart includes allowances for Condensing Unit Service Valves, Filter Drier, and Sight Glass.
3) Use only dehydrated refrigeration service tubing and refrigeration grade fittings.
4) Install refrigeration piping in accordance with local codes and ASHRAE guidelines.
Evacuation, Leak Detection, and Charging
Once the piping is installed, the following steps should be performed to ensure a dry
and leak-free system:
1. The Condensing unit is pre-charged with compressor oil. To avoid moisture
contamination of the oil, do not leave the service valves open to atmosphere for
more than 15 minutes.
2. Open the liquid and suction service valves on the condensing unit.
3. Valve Control only: Supply power to the Evaporator only - DO NOT connect
power to the Condensing unit. Turn on the temperature controller, which
will energize and open the liquid line solenoid valve. Verify the solenoid is
powered as indicated by the compressor icon ("snowflake") on the temperature
controller display.
4. Pressurize the system to a maximum of 150PSIG of dry nitrogen. Mark the pressure
and hold for a minimum of 1 hour. If the pressure holds, proceed to the next step,
otherwise locate and repair the leak and repeat this step.
5. Evacuate the system to a minimum of 500 microns. If the vacuum is achieved,
proceed to the next step, otherwise locate and repair the leak and repeat from step 4.