Trane CVGF1000, Installation, Operation & Maintenance Manual

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Note: If the chiller is operating in a limit mode (current limit, condenser limit, evapora-
tor limit, and so forth), the limit operation has priority over all Large display™ manual
modes of of operation.
On each AdaptiView power-up, the inlet guide vanes are driven full closed to recali-
brate the zero position (steps) of the Stepper motor vane actuator.
Motor Temperature Sensor Module
The motor temperature module 1A26 connects using unit wiring to the three motor
winding temperature sensors. This module is located in the control panel where the
module is connected to the IPC bus.
Temperature Sensors
Evaporator entering 4R6 Evaporator leaving 4R7 Condenser entering 4R8 Condenser
leaving 4R9 Oil temperature 4R5 Outdoor air 4R13 Evaporator saturated refrigerant
4R10 Condenser saturated refrigerant 4R11
Probe Operating Temperature Range -40 to 121°C
Accuracy± 0.250°C over the range - 20 to 50°C ± 0.50°C over the range -40 to 121°C
Starter Module
In the hierarchy of modules the Starter module 2A1 (1A23 when customer-supplied
starter specified) is second only to the Large display ™.
The starter module is present in all starter selections. This includes Wye Delta, Across
the Line, and Solid State whether remote unit mounted or supplied by others. The
starter module provides the logic to provide the motor protection for current overload,
phase reversal, phase loss, phase imbalance, and momentary power loss.
Electrical Sequence
This section will acquaint the operator with the control logic governing chillers
equipped with Tracer AdaptiView control systems.
Note: The typical wiring diagrams are representative of standard units and are provid-
ed only for general reference. They may not reflect the actual wiring of your unit. For
specific electrical schematic and connection information, always refer to the wiring
diagrams that shipped with the chiller.
With the supply power disconnect switch or circuit breaker (2Q1 or 2K3) on, 115-volt
control power transformer 2T5 and a 15-amp starter panel fuse (2F4 ) to terminal (2X1-
1) starter panel to terminal 1X1-1 in the control panel. From this point, control voltage
flows to:
1. Circuit Breaker 1Q1 which provides power to the starter module (2A1) relay out-
puts and the High Pressure Cutout switch (4S1).
2. Circuit Breaker 1Q3 which provides power to Transformer (1T1) which steps down
the 115 Vac to 24 Vac. This 24 Vac then powers the 24 Vdc power supply 1A1, and
1A2 if present. The 24 Vdc is then connected to all modules using the IPC Bus pro-
viding module power. 1Q3 also provides power to the external chiller water proof
of flow device connected between terminal block 1X1-5 to 1A6-J3-2, and condens-
er water proof of flow device connected at 1X1-6 to 1A6-J2-2.
CVGF-SVX03B-EN
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Control System Components