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climatemaster.com
THE SMART SOLUTION FOR ENERGY EFFICIENCY
Packaged Units
Rev.: 1/06/09B
Functional Troubleshooting - S.I. Units
Note: Never connect refrigerant gauges during startup procedures. Conduct water-side analysis
using P/T ports to determine water fl ow and temperature difference. If water-side analysis shows
poor performance, refrigerant troubleshooting may be required. Connect refrigerant gauges as a
last resort.
Rev. 11/06
COAX
COMPRESSOR
DISCHARGE
SUCTION
HWG
COOLING CYCLE ANALYSIS -
COAX
COMPRESSOR
DISCHARGE
SUCTION
HWG
HEATING CYCLE ANALYSIS -
bar
SAT
bar
SAT
C
C
AIR
COIL
CC
FP2: HEATING
LIQUID LINE
C
EXPANSION
VALVE
AIR
COIL
CC
bar
SAT
bar
SAT
C
C
CC
WATER IN WATER OUT
kPa kPa
CC
WATER IN WATER OUT
kPa kPa
Look up pressure drop in
I.O.M. or spec. catalog to
determine flow rate.
Look up pressure drop in
I.O.M. or spec. catalog to
determine flow rate.
†
Use 4.18 for water, 4.05 for antifreeze
FILTER
DRIER*
FLASH
GAS LINE
C
FP1
SENSOR
C
EXPANSION
VALVE
FILTER
DRIER*
FP2: FLASH
GAS LINE
C
OTHER SIDE
OF FILTR DR
C
FP1: CLG
LIQ LINE
C
*Filter drier not on some units with R22 refrigerant.
Refrigerant Type:
R410A
R22
R407C
Heat of Extraction (Absorption) or Heat of Rejection =
________flow rate ( diff. ( factor = _____________
(kW)
Superheat
Subcooling
Suction temperature - suction saturation temp.
Discharge saturation temp. - liquid line temp.
=
=
=
=
(deg C)
(deg C)
l/s) x _________ temp. deg. C) x ________ fluid
†
Voltage: ________
Comp Amps: _______
Total Amps: ________
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