Partial Heat Recovery Power Supply; Water Pump Power Supply - Trane CGAM Installation & Operation Manual

Installation - Electrical
Table 35. Power Entrance
"Slant" Configuration 20-35Ton
Low
Voltage
Power
Low Voltage
Power

Partial Heat Recovery Power Supply

The partial heat recover heat exchanger is insulated from
ambient air and protected from freezing temperatures by
an immersion heater. When the ambient air temperature
drops to approximately 37°F (2.8°C) the thermostat
energizes the heaters.The heaters will provide protection
from ambient temperatures down to -20°F (-29°C).
It is required to provide an independent power source
(115V 60-Hz-20 amp, 50Hz-15 amp), with a fused-
disconnect to the heater.The heaters are factory-wired
back to the unit control panel.
CG-SVX17E-EN
Low
Voltage
Power
Incoming
Power
"W" Configuration 80-130Ton
Note: If partial heat recovery heat exchanger is drained,

Water Pump Power Supply

Provide power supply wiring with disconnect for the
chilled water pump(s).
"V" Configuration 40-70Ton
Incoming
Power
the heater must be turned off in order to avoid
damaging the partial heat recovery heat exchanger.
The heater should only be on when the heat
recovery heat exchanger has water in it.
Incoming
Power
71