285B
EVOLUTIONR 15 HEAT PUMP
WITH PURONr REFRIGERANT
1--1/2 TO 5 TONS
Wiring Diagram
SCHEMATIC DIAGRAM (LADDER FORM)
CONNECTION DIAGRAM
BLU
BRN
2
5
(NOTE #8)
*CH
BLK
or
RED
H
*SC
BLK
BLK
*ST +t
YEL
C
BLK
*CHS
CONT
* CHS
21
L2
23
23
ODF
YEL
YEL / BLU
BRN / YEL
PL2
CC
HPS
LPS
BLU/PNK
BLU/PNK
YEL/PNK
VR
VS
L1
* HPS
1 2 1 2
COMM
1
2
3
4
5
STATUS
AS PROVIDED
BY MANUFACTURER
SEE NOTE #12
QUIET
UTIL SHIFT
BRN
OCT
PL5
DEFROST
TIME
BRN
OAT
BLK
BLK
P1
PL1
OCT
4
3
2
OAT
R C Y LS W2 O
FORCED
DEFROST
CB
RED
WHT
YEL
GRN
LEGEND
TO INDOOR UNIT
FACTORY POWER WIRING
FACTORY CONTROL WIRING
FIELD CONTROL WIRING
FIELD POWER WIRING
CONDUCTOR ON CIRCUIT BOARD
COMPONENT CONNECTION
FIELD SPLICE
JUNCTION
PLUG RECEPTACLE
AUXR
CAP
CB
*CH
*CHS
COMP
NOTES:
1.
2.
3.
4.
5.
6.
AUXILLARY HEAT RELAY
CAPACITOR (DUAL RUN)
CIRCUIT BOARD
CRANKCASE HEATER
CRANKCASE HEATER SWITCH
COMPRESSOR
L1
VS
VR
LLSR
Y
LPS
NOTE
THIS DEFROST CONTROL
BOARD CONTAINS A FIVE
MINUTE SHORT CYCLE
PROTECTOR. A FIVE
MINUTE DELAY WILL
OCCUR BETWEEN
COMPRESSOR OFF/ON
CYCLES.
DIP SWITCH SETTINGS
OFF
(DEFAULT)
A B C D
R C Y LS W2 O
1
2
3
30
OAT
CONTACTOR
DEFROST THERMOSTAT
DEFROST RELAY AND CIRCUITRY
HIGH PRESSURE SWITCH
LOW PRESSURE SWITCH
LIQUID LINE SOLENOID RELAY
OUTDOOR AIR THERMISTOR
OUTDOOR COIL THERMISTOR
OUTDOOR FAN RELAY
OUTDOOR FAN
REVERSING VALVE SOLENOID
REVERSING VALVE SOLENOID
RELAY START CAPACITOR
START RELAY
START THERMISTOR
* MAY BE FACTORY OR FIELD INSTALLED
Compressor and fan motor furnished with inherent thermal protection.
To be wired in accordance with national electric code (N.E.C.) And local codes.
N.E.C. Class 2, 24 V circuit, min. 40 VA required, 60VA on units installed with LLS.
Use copper conductors only from disconnect to units suitable for at least 75ºC (167ºF).
Must use thermostat and sub-base as stated in pre-sale literature.
If indoor section has a transformer with a grounded secondary, connect the Grounded
side to "C" on the circuit board.
7. If any of the original wire, as supplied, must be replaced, use the same or
Equivalent wire.
8. Check all electrical connections inside control box for tightness.
9. Do not attempt to operate unit until service valves have been opened.
10. Symbols are electrical representation only.
11. When start relay and start capacitor are installed, start thermistor is not used.
12. For communicating control only.
13. In case of non-communicating Indoor system, disconnect factory provided wires
from A, B, C, and D terminals. Using factory provided wires connect to R, C, Y, W2,
and O terminals as required by Installation Instructions. Connect field 24V wires to
factory provided wires, cap or remove unused factory provided wires.
L
O
G
I
C
ODFR
RVSR
AUXR
LLSR
SEE NOTE #12
K4
A BCD
OCT
CB
* HPS
CONT
K4
30 MINUTES
1 2 3
OR
QUIET
SHFT
C
(DEFAULT)
60 MINUTES
90 M INUTES
1 2 3 60 1 2 3
OR
120 MINUTES
120
1 2 3
OR
90
ON
CONT
DFT
DR
*HPS
*LPS
LLSR
OAT
OCT
ODFR
ODF
RVS
RVSR
*SC
*SR
*ST
C
OUTPUT
OPTIONAL
NON-COMMUNICATING
CONTROL
SEE NOTE #13
HP
C
RVS
RVS
ODF
* LPS
ORG
ODF
AUXR
R
LS
RVS
ORG
L1
W2
YEL/PNK
PL3
3
C
F
O
YEL
BLK
BLU
PL4
+t°
RVSR
VIO
1
H
ODF
ODFR
YEL
EQUIP GND
23
23
CAP
BRN
C C
CONT
* ST
YEL
11
*SC
2
1
* CH
R
L2
R
S
* SR
5
S
COMP
C
21
BLU
F
L1
COMP
CONT
11
EQUIP
GND
C
BLK
RED or BLK
208/230 1Ø
POWER
SUPPLY
YEL
1
L1
BLU
CAP
INPUT
*SR
FIELD SELECTABLE OPTIONS FOR TIME PERIOD
BETWEEN DEFROST CYCLES (MINUTES)
SPEED
JUMPERED TEST PINS (USE METAL OBJECT), FIELD SPEED-UP CYCLE
UP
1) MOMENTARILY SHORT PINS AND RELEASE TO BYPASS COMPRESSOR OFF DELAY.
2) SHORT FOR 5+ SEC. AND RELEASE FOR FORCED DEFROST.
3) PERMANENT SHORT WILL BE IGNORED.
DEFROST WILL TERMINATE IN 30 SEC. IF DFT OPEN.
DEFROST WILL TERMINATE NORMALLY IF DFT IS CLOSED.
FLASH
CODE
On, No Flash
1, Pause
16
31
32
FAULT DEFINITION
FLASH FAULT DEFINITION
CODE
Standby
Normal Operation
System Communications Failure
High Pressure Switch
Low Pressure Switch
45
46
Control Fault
Brown out (24V)
53
Outside Temp Sensor
55
56
72
73
74
82
83
84
Coil Temp Sensor
Thermistor Range Error
Thermal Cutout
Contactor Shorted
No 230V at Compressor
Thermal lockout
Low pressure lockout
High pressure lockout
CAUTION
1. Compressor damage may occur if system is over charged.
2. This unit is factory charged with R-410A in accordance with the amount shown
on the rating plate. The charge is adequate for most systems using matched
coils and tubing not over 15 feet long. Check refrigerant charge for maximum
efficiency. See Product Data Literature for required Indoor air Flow Rates and
for use of line lengths over 15 feet.
3. Relieve pressure and recover all refrigerant before system repair or final
disposal. Use all service ports and open all flow-control devices, including
solenoid valves.
4. Never vent refrigerant to atmosphere. Use approved
recovery equipment.
Fig. 1 – Wiring Diagram — Model size 1.5 -- 5 tons, 208/230--1
339109-101 REV. A
EBryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231
Edition Date: 09/12
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
2
Catalog No. WD285B---01
Replaces: New