Install Manual

21
This system uses R--410A refrigerant which has higher operating
pressures than R--22 and other refrigerants. No other refrigerant
may be used in this system. Gauge set, hoses, and recovery system
must be designed to handle R-- 410A. If you are unsure, consult the
equipment manufacturer. Failure to use R-- 410A compatible
servicing equipment or replacement components may result in
property damage or injury.
Compressor Oil
Use only manufacturer suggested compressor oil, see Table 8 for
correct oil.
NOTE: Alternate manufacturer approved compressor oil for
Copeland Scroll compressor: Uniqema RL32 --3MAF, Copeland
Ultra 32 CC, Mobil Arctic EAL22 CC, ICI Emkarate RL22 or ICI
Emkarate 32CF.
This oil is extremely hygroscopic, meaning it absorbs water
readily. POE/PVE oils can absorb 15 times as much water as other
oils designed for HCFC and CFC refrigerants. Take all necessary
precautions to avoid exposure of the oil to the atmosphere.
Servicing Systems on Roofs with Synthetic Materials
POE/PVE (polyolester) compressor lubricants are known to cause
long term damage to some synthetic roofing materials. Exposure,
even if immediately cleaned up, may cause embrittlement (leading
to cracking) to occur in one year or more. When performing any
service that may risk exposure of compressor oil to the roof, take
appropriate precautions to protect roofing. Procedures which risk
oil leakage include, but are not limited to, compressor replacement,
repairing refrigerant leaks, replacing refrigerant components such
as filter drier, pressure switch, metering device, coil, accumulator,
or reversing valve.
Synthetic Roof Precautionary Procedure
1. Cover extended roof working area with an impermeable
polyethylene (plastic) drip cloth or tarp. Cover an
approximate10x10ft (3x3m)area.
2. Cover area in front of the unit service panel with a terry
cloth shop towel to absorb lubricant spills, prevent run--offs,
and protect drop cloth from tears caused by tools or
components.
3. Place terry cloth shop towel inside unit immediately under
component(s) to be serviced and prevent lubricant run --offs
through the louvered openings in the unit base.
4. Perform required service.
5. Remove an d dispose of any oil contaminated material per
local codes.
Liquid Line Filter Drier
The filter drier is specifically designed to operate with R--410A.
Use only factory-- authorized components. Filter drier must be
replaced whenever the refrigerant system is opened. When
removing a filter drier, use a tubing cutter to cut the drier from the
system. Do not unsweat a filter drier from the system. Heat from
unsweating will release moisture and contaminants from drier into
system.
R--410A Refrigerant Charging
Refer to unit information plate and charging chart. Some R --410A
refrigerant cylinders contain a dip tube to allow liquid refrigerant to
flow from cylinder in upright position. For cylinders equipped
with a dip tube, charge R --410A units with cylinder in upright
position and a commercial metering device in manifold hose.
Charge refrigerant into suction--line.
TROUBLESHOOTING
Refer to the Troubleshooting Chart (Table 9) for troubleshooting
information.
START--UP CHECKLIST
Use the Start --Up Checklist at the back of this manual.
PH4Z