Refrigeration; Electronic Compressor Protection; Module (Cpm); Low Ambient Condenser Fans - Trane IntelliPak with Symbio 800 Installation, Operation And Maintenance Manual

Performance Data

Refrigeration

Electronic Compressor Protection

Module (CPM)

The CSHN*** compressors come equipped with a
compressor protection device (CPM) capable of detecting
phase reversal, phase loss, and motor overheating. When
a fault is identified, the output relay will open. Depending
on the fault, the CPM may either auto-reset or it may lock-
out. The CPM can be manually reset by cycling control
power.
Note: If the compressor has tripped due to an overheated
windings condition, the motor winding temperature
sensor resistance (PTC) will be 4500 ohms or
greater; the resistance must be less than 2750 ohms
before the 5 minute reset timer becomes enabled.

Low Ambient Condenser Fans

Operation
Table 56. Minimum outside air temperature
Low Ambient Unit Minimum Outside Air
Temperature for Mechanical Cooling
Without Hot Gas Bypass
With Hot Gas Bypass
104
Standard Ambient Condenser Fans
Standard ambient units stage condenser fans down to a
minimum of one fan per circuit. All standard ambient units
ship with the Symbio™ controller set to allow mechanical
cooling down to 50°F outdoor temperature. This setting is
adjustable. Below table lists the minimum recommended
mechanical cooling setting for standard ambient units by
application and unit type.
Table 57.
Standard Unit Minimum Outside
Air Temperature for Mechanical
Economizer - A/C Applications
No Economizer - 80/67F design return
No Economizer - 90/78F design return
0°F
10°F
Minimum outside air temperature
Std &
High Cap
Cooling
units
45°F
air 45°F
air 50°F
eFlex™ units
20, 60, 25, 30,
70, 75 40, 50,
55 ton
ton
45°F 50°F
45°F 55°F
50°F 70°F
RT-SVX063G-EN