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Les langues disponibles
All switch positions are shown in refrigeration cycle operation, and change position upon initiation of a defrost.
1
8145 Replacement
Mode A - No Label Required
3
1
2
F
L1
THERMOSTAT
COMPRESSOR
OR
DEFROST
LINE
SOLENOID VALVE
OR
HEATER
CONTACTOR COIL
L2
DEFAULT (Out of the Box)
4
8047 Replacement–Double Pole Switching
Mode B with 8047 Terminal Block Label Applied
N
1
3
4
L1
SOLENOID
VALVE
DEFROST
OR
HEATER
CONTACTOR
L2
7
8141 Replacement
Mode A with 8141 Terminal Block Label Applied
N
2
1
3
4
THERMOSTAT
L1
COMPRESSOR
OR
FAN
SOLENOID VALVE
DEFROST
OR
HEATER
CONTACTOR COIL
L2
10
8245 Replacement
Mode A with 8245 Terminal Block Label Applied
2
3
1-N
F
L1
THERMOSTAT
COMPRESSOR
DEFROST
LINE
OR
SOLENOID VALVE
HEATER
OR
CONTACTOR COIL
L2
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.
DTAV40 - TYPICAL WIRING DIAGRAMS
2
CONTROL
TERMINATE
POWER
INPUT
N
4
N
X
L1
TERMINATION
FAN
THERMOSTAT
MOTOR
FAN
W/FAN DELAY
L2
5
8045 Replacement
Mode A with 8045 Terminal Block Label Applied
CONTROL
TERMINATE
POWER
INPUT
2
2
8047
F
LABEL
L1
LINE
L2
8
8143 Replacement
Mode B with 8143 Terminal Block Label Applied
CONTROL
TERMINATE
POWER
INPUT
X
1
8141
LABEL
L1
TERMINATION
THERMOSTAT
W/FAN DELAY
FAN
L2
CONTROL
TERMINATE
POWER
INPUT
p
4
Xp
8245
LABEL
FAN
PRESSURE
MOTOR
SWITCH
8041 Replacement
Mode A with 8041 Terminal Block Label Applied
CONTROL
POWER
2
1
3
4
X
THERMOSTAT
COMPRESSOR
OR
SOLENOID VALVE
DEFROST
OR
CONTACTOR COIL
HEATER
CONTROL
POWER
3
2
4
X
1-N
THERMOSTAT
FAN
MOTOR
COMPRESSOR
DEFROST
OR
SOLENOID VALVE
HEATER
OR
CONTACTOR COIL
CONTROL
POWER
3
4
2
N
X
HOT
CONNECT ACROSS
GAS
VALVE
COMPRESSOR
THERMOSTAT
Paragon
Precision
GRASSLIN
Model
Model
Model
TIME INITIATED, TIME TERMINATED
8045
6045
DTAV40
8041
6041
DTAV40
8047
6047
DTAV40
TIME INITIATED, REMOTE TEMPERATURE OR PRESSURE TERMINATED
8145
6145
DTAV40
8141
6141
DTAV40
8143
---
DTAV40
TIME INITIATED, PRESSURE TERMINATED
(Separate Pressure Switch Required - see instructions)
8245
---
DTAV40
8247
---
DTAV40
3
8247 Replacement–Double Pole Switching
Mode B with 8247 Terminal Block Label Applied
TERMINATE
INPUT
N
1
8041
LABEL
L1
SOLENOID
VALVE
OR
CONTACTOR
L2
6
120V Fan & Defrost Heater; 240V Compressor
Mode A - No Label Required
TERMINATE
INPUT
F
3
8045
LABEL
L1
DEFROST
FAN
HEATER
N
L2
9
8143 Replacement–Double Pole Switching
Mode B with 8143 Terminal Block Label Applied
TERMINATE
INPUT
1
N
8143
LABEL
L1
TERMINATION
THERMOSTAT
SOLENOID
VALVE
W/FAN DELAY
OR
CONTACTOR
L2
WIRING LEGENDS
Terminal
Typical
S1 Mode
Ident.
Wiring
Selector
Label
Diagram
A
8045
5
F
2
A
8041
N
4
N
B
8047
F
1, 6
A
None
N
7
A
8141
8, 9
1
B
8143
F
10
A
8245
3
N
B
8247
p
3
2
4
Xp
DEFROST
HEATER
PRESSURE
SWITCH
CONTROL
TERMINATE
POWER
INPUT
2
4
1
N
X
THERMOSTAT
TERMINATION
THERMOSTAT
W/FAN
DELAY
COMPRESSOR
OR
SOLENOID VALVE
OR
CONTACTOR COIL
CONTROL
TERMINATE
POWER
INPUT
3
4
2
X
DEFROST
HEATER
TERMINATION
THERMOSTAT
Terminal Layout
3 1-N
2
4
X
1
3
2
4
X
1
3
4
2
2
3
1
2
N X
4
1
3
2
4
X
N
3
4
2
X
3 1-N
2
4
Xp
p
1
3
2
p
4
Xp
8247
LABEL
8143
LABEL
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