Zh Series Compressor Zh21K4e-Tfd-524 for heat
pump 1.Product detail : 2.Fearture Scroll™
Compressors For Heating are designed for optimum operation and
reliability of heat pumps connected to hydronic distribution
systems for space heating and/or for the production of domestic hot
water. These applications require reaching condensing temperatures
as high as 65°C with high efficiency and reliability over a broad
operating range. Features such as brazed fitting connections and
special versions for the tandemization of compressors fit the
requirements of heat pump systems. 3Drawlings
4.attached parts5.Caution Inadequate lubrication! Bearing
and moving parts destruction! Minimise liquid refrigerant returning
to the compressor. Too much refrigerant dilutes the oil. Liquid
refrigerant can wash the oil off the bearings and moving parts
leading to overheating and compressor failure. Due to Scrolls
inherent ability to handle liquid refrigerant in flooded start and
defrost cycle operation, an accumulator is not required for
durability in most systems. However, large volumes of liquid
refrigerant repeatedly flooding back to the compressor during
normal off cycles, or excessive liquid refrigerant flooding back
during defrost or varying loads can dilute the oil, no matter what
the system charge is. As a result, bearings and moving parts will
be inadequately lubricated and wear may occur.6.Oil
additivesAlthough Emerson Climate Technologies cannot comment on
any specific product, from our own testing and past experience, we
do not recommend the use of any additives to reduce compressor
bearing losses or for any other purpose. Furthermore, the long term
chemical stability of any additive in the presence of refrigerant,
low and high temperatures, and materials commonly found in
refrigeration systems is complex and difficult to evaluate without
rigorously controlled chemical laboratory testing. The use of
additives without adequate testing may result in malfunction or
premature failure of components in the system and, in specific
cases, in voiding the warranty on the component. /* March 10,
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