Installation - Electrical
86 RTAC-SVX01J-EN
Control Power Supply
The unit is equipped with a control power transformer; it
is not necessary to provide additional control power
voltage to the unit.
All units are factory-connected for appropriate labeled
voltages except for the 400V/50Hz units which need the
control power transformer (1T1) reconnected as noted
below.
Important: As shipped, a normal 400 volt unit control
power transformer is wired on the 400 volt
tap (H3). Reconnect the appropriate
transformer wire lead 126A to the tap (H2)
for 380V/50Hz power supply or lead 126A to
the tap H4 for the 415V/50 Hz power supply.
It is also necessary to adjust the “unit
voltage” setting usingTechView
(Configuration-CustomTab).
Heater Power Supply and Convenience
Outlet (Packaged Units Only)
The evaporator shell is insulated from ambient air and
protected from freezing temperatures by two
thermostatically-controlled immersion heaters and two
strip heaters. Whenever the water 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 60Hz-20 amp, 220V 50Hz-15 amp), with a fused-
disconnect.The heaters are factory-wired back to the unit
control panel.
Figure 28. Starter panel
Knockouts for 30V
115V Field Wiring
Cut holes
for power wiring
THIS AREA
Figure 29. Single point power box - optional on dual panel units
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