Carrier Aquazone 50PCH PCV 007 Installation, Start-Up And Service Instructions Manual page 33

OVERLOAD SETTING VERIFICATION
When a Thermal Overload Relay is included with a unit (see
Fig. 30 for location), prior to energizing the unit, visually verify
that the amperage setting of the overload relay is set as defined in
Table 7, below and Fig. 31-32.
Table 7 — Thermal Overload Settings
Unit Size and Voltage
50PC036 265V 1Ph
50PC042 208/230V 1Ph
Fig. 30 — Overload Relay Electrical Box Mounting
Location
Fig. 31 — 036-2 Units (Size 036, 265V)
Overload Settings
Set Point (in Amperes)
13
18
Fig. 32 — 042-1 Units (Size 042, 208/230V)
Overload Settings
Wire Control Connections
BETTER B, COMPLETE C, AND DELUXE D CONTROL
Control wiring for units with PSC and Constant Torque blower
motors are connected to a terminal block located in the unit
electrical box. Refer to the unit wiring diagram for connection
details.
To avoid possible injury or death due to electrical shock, open
the power supply disconnect switch and secure it in an open
position during installation.
Never route control wiring through the same conduit as power
supply wiring. Electrical noise and transients from the power
wiring can cause communication issues or damage to the
control wiring and connected control components.
Units with Better B, Complete C or Deluxe D control packages
can be controlled using the included thermostat inputs (R, O, Y1,
C, G) for single stage heat pump thermostat or field-installed DDC
(Direct Digital Controls) controls. Note that the reversing valve on
the unit is energized when the unit is in the cooling mode. See
Fig. 33 for typical thermostat connections.
C O Y
Fig. 33 — Typical Thermostat Connections
33
WARNING
CAUTION
G
R