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20
*Optional wiring.
AL
—
Alarm Relay Contacts
BM
—
Blower Motor
CAP
—
Capacitor
CB
—
Circuit Breaker
CO
—
Sensor, Condensate Overflow
CR
—
Compressor Relay
DM
—
Damper Motor
FP1
—
Sensor, Water Coil Freeze Protection
FP2
—
Sensor, Air Coil Freeze Protection
FSS
—
Fan Speed Switch
HP
—
High-Pressure Switch
JW1
—
Jumper Wire for Alarm
LOC
—
Loss of Charge Pressure Switch
PB
—
Power Terminal Block
RVS
—
Reversing Valve Solenoid
TRANS
—
Transformer
WV
—
Water Valve
----------
Field Line Voltage Wiring
Field Low-Voltage Wiring
Printed Circuit Trace
LEGEND
Relay/Contactor Coil
Solenoid Coil
Thermistor
Circuit Breaker
Relay Contacts-N.O.
Switch-Temperature
Switch-High Pressure
Switch-Low Pressure
Ground
Wire Nut
Mate-N-Lock
>>
NOTES:
1. Compressor and blower motor thermally pro-
tected internally.
2. All wiring to the unit must comply with local
codes.
3. Transformer is wired to 115-V (WHT) lead for
115/1/60 units, 265-V (BRN) lead for 265/1/60
units, 240-V (ORG) lead for 240/1/50 units, or
208-V (RED) lead for 208/1/60 units.
Rewire transformer L1 connection if voltage is
230-1-60 or 220-1-50, insulate unused lead.
4. FP1 thermistor provides freeze protection for
WATER. When using ANTI-FREEZE solutions,
cut JW3 jumper.
5. Refer to Microprocessor Control Installation,
Application, and Operation manual for control
wiring to the unit. Low voltage wiring must be
“class 1
”
and voltage rated e
q
ual to or greater
than unit supply voltage.
6. Factory-cut jumper (JW4). Dry contact will be
available between AL1 and AL2.
7. Transformer secondary ground via Deluxe D
board standoffs and screws to control box.
(Ground available from top 2 standoffs as
shown.)
DELUXE D
DELUXE D
a50-8328
Fig. 19 — 50PEC Unit with Deluxe D and LON Controllers