sealed until just before brazing. (Store elbows
and other joints in a plastic bag.)
– If dust, dirt, or water enters the refrigerant
cycle, deterioration of the oil and compressor
trouble may result.
• Use liquid refrigerant to fill the system.
– If gas refrigerant is used to seal the system,
the composition of the refrigerant in the cylin-
der will change and performance may drop.
• Always charge refrigerant in a liquid state.
– Charging refrigerant in the gaseous state will
change the composition of the refrigerant
and lead to a performance drop.
• Use a vacuum pump with a reverse flow check
valve.
– The vacuum pump oil may flow back into the
refrigerant cycle and cause the refrigerator
oil to deteriorate.
• Do not use the following tools that are used
with refrigerants other than R410A.
– Gauge manifold, charge hose, gas leak de-
tector, reverse flow check valve, refrigerant
charge base, vacuum gauge, refrigerant re-
covery equipment.
– If the refrigerants other than R410A and re-
frigeration oil are mixed in the R410A, the
refrigerant may deteriorate.
– If water is mixed in the R410A, the refrigera-
tion oil may deteriorate.
– Since R410A does not contain any chlorine,
gas leak detectors for conventional refriger-
ant will not react to it.
– Do not use a charging cylinder. May cause
the refrigerant to deteriorate.
• Be especially careful when managing the tools.
– If dust, dirt, or water gets in the refrigeration
system, the refrigerant may deteriorate.
3.5. Before getting installed (or moved)-electrical work
CAUTION
• Ground the unit.
– Do not connect the ground wire to gas or wa-
ter pipes, lightning rods, or telephone ground
lines. Improper grounding may result in elec-
tric shock.
Specifications are subject to change without notice.
SVZ-KP12, 18, 24, 30, 36NA
3.4. Before getting started
CAUTION
• Do not install the unit where combustible gas
may leak.
– If the gas leaks and accumulates around the
unit, an explosion may result.
• Do not use the air conditioner in special envi-
ronments.
– Oil, steam, sulfuric smoke, etc. can signifi-
cantly reduce the performance of the air con-
ditioner or damage its parts.
• When installing the unit in a hospital, commu-
nication station, or similar place, provide suffi-
cient protection against noise.
– The INVERTER equipment, private pow-
er generator, high-frequency medical equip-
ment, or radio communication equipment
may cause the air conditioner to operate er-
roneously, or fail to operate. On the other
hand, the air conditioner may affect such
equipment by creating noise that disturbs
medical treatment of image broadcasting.
• Do not install the unit on a structure that may
cause leakage.
– When the room humidity exceeds 80% or
when the drain pipe is clogged, condensa-
tion may drip from the indoor unit. Perform
collective drainage work together with the
outdoor unit, as required.
• When the ambient dew point temperature ex-
ceeds 75 °F (24 °C), dew condensation may
occur on the unit surface. Perform appropriate
treatment to avoid dew condensation.
• Install the power cable so that tension is not
applied to the cable.
– Tension may cause the cable to break and
generate heat and cause a fire.
• Install a leak circuit breaker as required.
– If a leak circuit breaker is not installed, elec-
tric shock may result. Use power line cables
of sufficient current carrying capacity and rat-
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