York AFFINITY OptiHeat YAW040, Installation Manual

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11
External
Loop Pump(s)
208-230/60/1
1/2 hp Max
GROUND
ABC
PB-1
PB-2
AXB
LOAD PUMP
CB CB
SOURCE
PUMP
Fixed Speed Flow Center
The pump(s) will be connected to the terminals on PB1 in the unit electrical box as shown in Figure 3a. The pumps will automatically be
cycled as required by the unit or by a signal from another unit sharing the flow center (See Figures 5 and 6). Pumps are protected by circuit
breakers (CB) shown in Figure 3a.
Electrical Information
( Circuit B ) Current Switch
CSB
Black
Black
Compressor
C
R
S
Unit Power Supply #2
208-230/60/1
G L1 L2
CCB
L1 L2
T1
T2
Red
Black
CCP
L1 L2
T1
T2
Tan (52B)
Black
Blue
230V
White (8)
Black (7)
G
Load
Pump
G
External
Source
Pump
NOTE 10
Blue
12 AWB
12 AWB
Figure 3c: FCM and FCL Flow Center Wiring
(Not Referenced)
NOTES: FCM and FCL
Flow Centers must be
wired to a separate
contactor (20 amp
minimum). The HydroZone
Accessory Control
Box works best for this
application.
NOTES: For closed loop systems with antifreeze protection, set SW2 DIP Switch #1 to
the "Loop" position on units with the Aurora control and SW2-2 should be set to “Loop”
on the Premier control.
Figure 3a: Unit Wiring for Loop Pumps
AFFINITY SINGLE STAGE HYDRONIC WITH OPTIHEAT INSTALLATION MANUAL