Figure 20: Bottom Supply Opening For Side Duct
Conversion
Condensate drain
A side condensate drain is provided to facilitate
condensate piping. A condensate drain connection
is available through the base pan for piping inside
the roof curb. Trap the connection per Figure 21.
The trap and drain lines should be protected from
freezing.
Plumbing must conform to local codes. Use a
sealing compound on male pipe threads. Install
condensate drain line from the 3/4 in. NPT female
connection on the unit to an open drain.
Figure 21: Condensate Drain
Compressors
The compressor used in this product is specifically
designed to operate with R-410A Refrigerant and
cannot be interchanged.
CAUTION
This system uses R-410A Refrigerant which operates
at higher pressures than R-22. No other refrigerant
may be used in this system.
The compressor also uses a refrigerant oil that is
extremely hygroscopic, meaning it absorbs water
readily. They 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.
CAUTION
Do not leave the system open to the atmosphere. Unit
damage could occur due to moisture being absorbed
by the
refrigerant
in the system. This type of oil is
highly susceptible to moisture absorption.
R-410A compressor lubricants are known to cause
long term damage to some synthetic roofing
materials.
CAUTION
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
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
or coil.
Units are shipped with compressor mountings
which are factory-adjusted and ready for operation.
CAUTION
Do not loosen compressor mounting bolts.
INSTALLATION MANUAL ZY SERIES 3 - 10 ton 60 Hertz R-410A
24
Johnson Controls Ducted Systems
Содержание ZY Series
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