Installation manual

11
5 SERIES 500RO11 INSTALLATION MANUAL
Pump Power Wiring
See Figure 14 for electrical connections from control box
to pumps.
FC1/FC2 style flow centers with fixed speed pumps
connect to PB1 in the control box.
Figure 14: Pump Wiring 208-230/60/1
R
Y1
C
W
O
G
L
24VAC (Hot)
24VAC (Common)
Compressor (1st Stage)
Aux. Heat
Reversing Valve
Blower Relay
System Monitor
Microprocessor Controller
Thermostat Connection
Y2
Compressor (2nd Stage)
Electronic Thermostat Installation
Position the thermostat subbase against the wall so that
it is level and the thermostat wires protrude through
the middle of the subbase. Mark the position of the
subbase mounting holes and drill holes with a 3/16-inch
bit. Install supplied anchors and secure base to the wall.
Thermostat wire must be 8-conductor (4 or 5 counductor
for communicating thermostats), 20-AWG (minimum)
wire. Strip the wires back 1/4-inch (longer strip lengths
may cause shorts) and insert the thermostat wires into
the connector as shown. Tighten the screws to ensure
secure connections. The thermostat has the same type
connectors, requiring the same wiring. See instructions
enclosed in the thermostat for detailed installation and
operation information.
NOTE: Aurora Base Control (ABC) DIP switch SW2-7 is
required to be in the “OFF” position for the control to
operate with FaultFlash or ComforTalk thermostats. SW2-7
in the “ON” position configures the control to operate with
typical thermostats (continuous lockout signal). There must
be a wire connecting Y2 on the Aurora controller to 2nd
stage compressor on the thermostat for proper operation.
Figure 15: Thermostat Wiring (Y1 Style Signals)
Electrical Connections cont.
PB1
T1T2
Internal
Loop Pump(s)
208-230/60/1
1/2 hp Max