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ManualsBrandsIntermatic ManualsDefrost TimersAuto-Voltage Defrost Timer, 2 HP NEMA 3R (120-240V)
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8141 Replacement
Mode A with 8141
Terminal Block Label Applied
7
L1
L2
TERMINATION
THERMOSTAT
W/FAN DELAY
2
4
X
N
8143 Replacement
Mode B with 8143
Terminal Block Label Applied
8
8143
LABEL
LINE
CONNECT ACROSS
COMPRESSOR
THERMOSTA
T
FAN
HOT
GAS
VALVE
1
3
L1
L2
TERMINATION
THERMOSTAT
2
X
8143 Replacement–Double Pole Switching
Mode B with 8143 Terminal Block Label Applied
9
8143
LABEL
3
DEFROST
HEATER
LINE
SOLENOID
VALVE
OR
CONTACTOR
1
4
N
DTAV40 - TYPICAL WIRING DIAGRAMS
All switch positions are shown in refrigeration cycle operation, and change position upon initiation of a defrost.
1
THERMOSTAT
COMPRESSOR
OR
SOLENOID VALVE
OR
CONTACT
OR COIL
DEFROST
HEATER
L1
L2
1
2
4 X
8041 Replacement
Mode A with 8041
Terminal Block Label Applied
2
8041
LABEL
3
LINE
FAN
N
3
L1
L2
2
2
8047 Replacement–Double Pole Switching
Mode B with 8047
Terminal Block Label Applied
4
8047
LABEL
3
DEFROST
HEATER
LINE
SOLENOID
VALVE
OR
CONTACTOR
N
4
1
8245 Replacement
Mode A with 8245
Terminal Block Label Applied
10
3
THERMOSTAT
COMPRESSOR
OR
SOLENOID VALVE
OR
CONTACT
OR COIL
DEFROST
HEATER
L1
L2
TERMINATION
THERMOSTAT
W/FAN DELAY
1
2
X
8141
LABEL
3
LINE
FAN
N
4
COMPRESSOR
OR
SOLENOID VALVE
OR
CONTACTOR COIL
FAN
MOTOR
DEFROST
HEATER
L1
L2
PRESSURE
SWITCH
F
3
1-N
2
4
LINE
THERMOSTAT
Xp
p
LABEL
8245
COMPRESSOR
OR
SOLENOID VALVE
OR
CONTACTOR COIL
FAN
MOTOR
DEFROST
HEATER
L1
L2
TERMINATION
THERMOSTAT
W/FAN DELAY
F
3
1
2
4
X
N
LINE
8145 Replacement
Mode A - No Label Required
5
THERMOSTAT
DEFAULT (Out of the Box)
CONTROL
POWER
TERMINATE
INPUT
CONTROL
POWER
TERMINATE
INPUT
CONTROL
POWER
TERMINATE
INPUT
CONTROL
POWER
TERMINATE
INPUT
CONTROL
POWER
TERMINATE
INPUT
CONTROL
POWER
TERMINATE
INPUT
CONTROL
POWER
TERMINATE
INPUT
L1
L2
4
8247 Replacement–Double Pole Switching
Mode B with 8247 Terminal Block Label Applied
8247
LABEL
3
DEFROST
HEATER
LINE
SOLENOID
VALVE
OR
CONTACTOR
N
2
1
p
PRESSURE
SWITCH
Xp
8045 Replacement
Mode A with 8045
Terminal Block Label Applied
COMPRESSOR
OR
SOLENOID VALVE
OR
CONTACTOR COIL
FAN
MOTOR
DEFROST
HEATER
L1
L2
F
3
1-N
2
4 X
LINE
THERMOSTAT
8045
LABEL
CONTROL
POWER
TERMINATE
INPUT
THERMOSTAT
COMPRESSOR
OR
SOLENOID VALVE
OR
CONTACT
OR COIL
DEFROST
HEATER
L1
N
TERMINATION
THERMOSTAT
W/FAN
1
2
4
X
120V Fan & Defrost Heater; 240V Compressor
Mode A - No Label Required
6
3
N
F
FAN
120V
240V
L2
DELAY
CONTROL
POWER
TERMINATE
INPUT
REPLACINGEXISTINGDEFROSTTIMERS
TheDTAV40willreplaceallmodelsofParagon8040,8140,8240SeriesorPrecision6040,6140SeriesandallpriorGrasslinDefrostTimermodels.
TERMINALIDENTIFICATION:
The standard DTAV40 terminal identification is identical to the Paragon 8145 with the addition of the “F” terminal. Terminal identification labels are provided for the other models to be placed
over the printed numbers on the printed circuit board. From the table above, select the proper label, apply to printed circuit board and wire per the original wiring or the wiring diagrams indicated.
“F”TERMINAL:
The DTAV40 contains a normally closed contact between terminals 1 and F. This terminal may be used to switch the fans off during a defrost rather than terminals 2 and 4. For hot gas defrost
applications, with the mode switch set to position “B”, the fans may be connected to terminal “F”.
8143Replacement: When replacing a Paragon 8143, wire the termination thermostat to terminal X of the DTAV40 (with the 8143 label attached), and the adjacent blank terminal. The Paragon
timers are wired to terminal X and the blank terminal. If the termination thermostat is wired to terminal N of the DTAV40 temperature termination will not occur and may result in burnout of the
DTAV40. See wiring diagrams 8 & 9.
8240SERIESREPLACEMENT: The DTAV40 may be used to replace the Paragon 8240 series defrost timers with integral pressure termination by the addition of a remote pressure switch wired to
terminals Xp and p of the DTAV40 (with an 8240 series terminal label applied). There must be no external voltage connected to the pressure switch. Set pressure switch cut-in to the same value
as set on the Paragon defrost timer being replaced. Set cut-out 6 to 14 psi below cut-in. See wiring diagrams 10 and 3.
N
1
N
1
3
X
4
2
2
F
3
1
2
4
N
X
F
3
1-N
2
4
Xp
p
N
1
3
2
4
Xp
p
N
1
3
2
4
X
1
N
3
4
2
X
F
3
1-N
2
4
X
2
4
3
5
2
4
1, 6
7
8, 9
10
3
Terminal Typical
Paragon Precision GRASSLIN S1 Mode Ident. Wiring Terminal Layout
Model Model Model Selector Label Diagram
TIME INITIATED, TIME TERMINATED
8045 6045 DTAV40 A 8045
8041 6041 DTAV40 A 8041
8047 6047 DTAV40 B 8047
TIME INITIATED, REMOTE TEMPERATURE OR PRESSURE TERMINATED
8145 6145 DTAV40 A None
8141 6141 DTAV40 A 8141
TIME INITIATED, PRESSURE TERMINATED
(Separate Pressure Switch Required - see instructions)
8143 --- DTAV40 B 8143
8245 --- DTAV40 A 8245
8247 --- DTAV40 B 8247