Envision NSZ Installation Manual Page 31

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31
NSZ/NDZ INDOOR SPLIT INSTALLATION MANUAL
Heating Cycle Analysis
COOLING TXV - ACTIVE
RIGHT TO LEFT
ClgTXV
Lineset
length
Measure liquid line
temperature and
pressure here in
both heating and
cooling modes
COAX
HEATING TXV - ACTIVE LEFT TO RIGHT
HtgTXV
Measure suction temperature
here at TXV bulb in heating modes.
Suct PSI____
Suct sat temp____
Volts ____
Amps ____
EWT ____
LWT ____
Suct temp____
Super heat____
Discharge PSI____
Disch. sat temp____
Liquid temp____
Sub cooling____
Bi-flow
filter/drier
Air
Coil
Suction
Discharge
Comp
Hot Water
Generator
Measure suction
temperature here
at TXV bulb in
cooling modes.
Cooling Cycle Analysis
COOLING TXV - ACTIVE
RIGHT TO LEFT
ClgTXV
Measure liquid line
temperature and
pressure here in
both heating and
cooling modes
COAX
HEATING TXV-ACTIVE LEFT TO RIGHT
HtgTXV
Measure suction temperature
here at TXV bulb in heating modes.
Suct PSI ____
Suct sat temp ____
Volts ____
Amps ____
EWT ____
LWT ____
Suct temp ____
Super heat ____
Discharge PSI ____
Disch. sat temp ____
Liquid temp ____
Sub cooling ____
Bi-flow
filter/drier
Air
Coil
Suction
Discharge
Comp
Measure suction
temperature here
at TXV bulb in
cooling modes.
Note: DO NOT hook up pressure gauges unless there appears to be a performance problem.
Lineset
length
Hot Water
Generator
Unit Startup/Troubleshooting
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