Trane CGAM User Manual

CG-SVX17D-EN 171
Diagnostics
Chilled Water Flow (Entering Water
Temp)
Chilled Water Flow (Entering Water
Temp)
Chilled Wtr Flow (Ent Temp)
Chiller Immediate Latching
Any Ckt(s)
Energized [No
Ckt(s) Energized]
The entering evaporator water temp
fell below the leaving evaporator water
temperature by more than 3°F for
100°F-sec while at least one
compressor was running.
Remote
Inverted Water Temp (Heating)
Inverted Water Temp (Heating)
Inverted Wtr Temp (Heating)
Chiller Immediate Latching
Unit energized
and all ckts’
reversing valves
in heating
direction [Unit
de-energized or
any ckt’s
reversing valve in
cooling direction]
The leaving evaporator water temp fell
below the entering evaporator water
temperature by more than 3°F for
100°F-sec. There is a 60 second ignore
time after the condition to enable the
diagnostic is met. During the ignore
time, the temperature error is not
integrated.
Remote
Low Evap Leaving Water Temp: Unit
Off
Low Evap Leaving Water Temp: Unit
Off
Low Evap Leav Wtr Temp: Off
Chiller
or
Circuit
Warning and
Special Action
NonLatch
Unit in Stop Mode,
or in Auto Mode
and No Ckt(s)
Energized [Any
Ckt Energized]
a. The leaving chilled water
temperature fell below the leaving
water temp cutout setting for 30
degree F seconds while the Chiller is in
the Stop mode, or in Auto mode with
no compressors running. Energize
Evap Water pump Relay until
diagnostic auto resets, then return to
normal evap pump control. Automatic
reset occurs when the temp rises 2°F
above the cutout setting for 30
minutes. When this diagnostic is active
AND Leaving Water Temperature
sensor diagnostic (loss of comm or out
of range) the Evap Water pump relay
shall be de-energized.
b. If evaporator protection
temperature sensors are installed, the
effect is on the appropriate circuit.
Else, the effect is on the chiller.
Remote
Low Evap Leaving Water Temp: Unit On
Low Evap Leaving Water Temp: Unit On
Low Evap Leav Wtr Temp: On
Chiller
or
Circuit
Immediate
and Special
Action
NonLatch
Any Ckt[s]
Energized [No
Ckt(s) Energized]
The chilled water temp. fell below the
cutout setpoint for 30 degree F
Seconds while a compressor was
running. Automatic reset occurs when
the temperature rises 2 °F above the
cutout setting for 2 minutes. This
diagnostic shall not de-energize the
Evaporator Water Pump Output. If this
diagnostic is active the Low Evap
Leaving Water Temp: Unit Off
diagnostic shall be suppressed.
If evaporator protection temperature
sensors are installed, the effect is on
the appropriate circuit. Else, the effect
is on the chiller.
Remote
Low Refrigerant Temperature
Low Refrigerant Temperature
Low Refrigerant Temperature
Circuit Immediate Latch
Circuit Energized
[Service
Pumpdown,
Operational
Pumpdown]
The suction saturated refrigerant
temperature dropped below the Low
Refrigerant Temperature Cutout
Setpoint for 16.67°C-seconds (30°F-
seconds). See “Low Refrigerant
Temperature Cutout,” p. 132 for min/
max information or “Capacity Limited
by Low Evap Rfgt Temp,” p. 152 for
limit conditions.
Local

Trane CGAM Specifications

General

Brand	Trane
Model	CGAM
Category	Chiller
Language	English