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Control Transformer
The rest of the low voltage controls, including the control
board, are powered by a 100VA class II transformer. 208/230-1
-60 and 208-3-60 models have a resettable breaker on the sec-
ondary side for circuit protection. Should the breaker trip, locate
and correct the problem and then reset the breaker by pressing
in on it.
All other voltage models have primary and secondary fus-
es for circuit protection.
TABLE 14 - Control Transformer
Voltage
Low Voltage Circuit Protection
(1) 208/230-1-60
Resettable breaker on transformer
(2) 208-3-60
Resettable breaker on transformer
(4) 460-3-60
Primary / Secondary fuses
(6) 220-1-50
Primary / Secondary fuses
(7) 380-3-50
Primary / Secondary fuses
IMPORTANT NOTE: For 208/230VAC-1-60
units, if connecting to 208VAC power supply
move the red wire connected to the 240 ter-
minal of the transformer to the 208 terminal
of the transformer.
Optional AC2-Series Outdoor Unit:
Signal Connections
The speed of the fan in the optional AC2 outdoor unit is
controlled by the control board in the indoor PC unit. In addition,
the PC has an auto-detect function for the outdoor unit, so that
no settings need to changed if installing the optional AC2
(enabling heat rejection/air cooling mode). Therefore, communi-
cation wiring is required.
The PC and AC2 units have matching terminal strip sig-
nals for these connections. Connections are labeled PWM+,
DET, and DET (the two DET terminals being interchangeable).
Use 3 conductors of the included 18-8 shielded outdoor rated
cable for this connection. If longer than 50 ft is required, inform
when ordering unit. Refer to diagram
TABLE 15 - Outdoor Unit Signal Connections
Signal
PWM+
Outdoor Fan Control
DET
Auto-detection of AC2 unit
DET
Use the included shielded 8-conductor outdoor rated 18ga
cable.
ISSUE 03: 1-Oct-2021
002298CDG.
Description
Air Thermostat Connections
The pool conditioner unit comes with its required air ther-
mostat, which is the BAPI Stat4 (model BA/BS4MBC-G-H2-FN-
Z or close variation). This is both a communicating room
sensor for air temperature and humidity, and also a user inter-
face to change the air temperature and humidity setpoints. It
communicates with the PC unit via the MODBUS protocol on an
RS485 bus using a twisted wire pair. There are also two power
wires required, so the thermostat should be connected using a
double-twisted-pair wire. 50 ft of this wire is supplied along with
the thermostat; be sure to order a longer wire if required.
Connect the terminals at the lower right of the PC's control
board to the BAPI Stat4 as follows. Also see connection dia-
gram
002298CDG
following, and PC wiring (SCH) diagrams in
the
Model Specific Information
cover.
TABLE 16 - Air Thermostat Connections
PC
BAPI
board
Stat4
A
NET A
B
NET B
24VDC
POWER
GND
GND
Use the included double twisted pair cable.
Accessory Connections
In most installations, accessories that are not already de-
scribed will not be required. Other available accessories in-
clude:
External pool water temperature sensor, replacing the inter-
nal water OUT line temperature sensor for use with the PC
control board's Setpoint Control routine. This is called HTS/
CTS Setpoint Control, described later.
External aquastat, to control pool water heating demand,
replacing the PC's Setpoint Control routine.
Compressor current sensor.
External dry contact to reduce air flow by the AR percent
factor
See the PC wiring (SCH) diagrams in the
Information
section or on the electrical box cover for these
connections.
Disable Switch (field installed)
A switch to disable demand from the control system may
be installed. On control board, jumper COM_IN to GND, and
toggle 12VDC to IN_SPARE to disable. See the main wiring
diagram in the
Model Specific Information
Air Conditioning with Cold Water
Normally, installations that require air cooling will use the
accessory outdoor unit to reject heat to the outdoor air. Howev-
er, for locations that have well water or other cold water availa-
ble and a place to reject the water to, like a drain or return well,
this is an alternative to using the outdoor unit. See
ter for details.
Page 13
section or on the electrical box
Wire
Description
Communication +
TWISTED
PAIR 1
Communication -
24VDC power
TWISTED
PAIR 2
ground
Model Specific
section.
002291MAN-03
Piping
chap-
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