__________________________________________________________________________
http://waterheatertimer.org/Intermatic-Defrost-timers-and-manuals.html
DTMV40 Time Initiated, Temperature,
Pressure or Time Terminated
Multi-Voltage Defrost Timers
Input Voltage Switch (S2)
INSTALLATION
Mode Selection Switch (S1)
Bracket Mount
NEMA 3R Enclosure
STARTUP PROCEDURE
1. Determine model to be replaced (Grasslin or Competitors)
from table below.
Fig. A
2. Set Mode Selection (S1 BLUE DIP Switch
– Fig. A) See table below and instructions
on page 5.
3. Apply corresponding Terminal
Identification and Door labels –see retrofit
kit instructions.
4. Set correct input voltage (S2 RED DIP
Switch – Fig. B).
5. Follow installation and programming instructions.
Fig. B
The DTMV40 can be configured for
either 120 or 208/240VAC. Locate RED
DIP Switch to the right of timer module.
For:
• 120VAC slide DIP switch UP
• 208/240VAC slide DIP switch DOWN
Paragon
n
n
n
n
n
n
n
Precision
Mode Selection
Wiring Diag.
TIME INITIATED, TIME TERMINATED
8045/8046
8041
8043
8047
6045
6041
6043
6047
A
A
B
B
Note: For outdoor locations, Raintight, or wet location conduit
hubs that comply with requirements of UL 514B (standard for
fittings for conduit and outlet boxes) are to be used.
1. Open door and then remove interior protective cover by
releasing spring clip on bottom.
2. Remove timer mechanism by releasing spring clip on bottom.
3. Select knockouts to be used. Remove inner 1/2” knockout
by inserting a screwdriver in the slot and carefully punch
knockout loose. Remove slug. If 3/4” knockout is required,
remove the outer ring with pliers after removing the 1/2”
knockout. Smooth edges with knife if necessary.
4. Place enclosure in desired mounting location and mark the
three mounting holes (refer to diagram). Start by placing
set screw on top and attaching enclosure over keyhole;
then screw in remaining two screws on bottom.
5. Connect conduit hubs to conduit before connecting the
hubs to the enclosure. After inserting hubs into enclosure,
carefully tighten hub lock nut. Do not over-torque.
6. Verify voltage selection. 120VAC – position switch UP;
208/240VAC – position switch DOWN (refer to Fig. B).
7. Wire in accordance with National and Local Codes.
8. Grounding: Terminate all ground wires to ground lug on
bottom of enclosure.
9. Replace interior protective cover.
Interior
Protective
CAUTION: Do not
Cover
check circuits by
“sparking” wires
to terminals.
Damage to the
defrost timer
may result.
1
2
3
4
Step 1
TIME INITIATED, REMOTE TEMPERATURE OR
PRESSURE TERMINATED
8145
8141
8143
6145
6141
6143
A
A
B
5
7
8
Timer Mechanism
6-1/8”
TIME INITIATED, PRESSURE TERMINATED
n
n
n
n
n
n
n
(Separate Pressure Switch Required (see instructions)
8245
8243
8247
6245
6243
6247
Grasslin
DT040
DT140
DTMV
DTSX
A
B
B
10
11
12
A
A
A
A
5
5
5
5
2-1/2”
Ground Lug
Step 2
Model Designation
DTMV40 TROUBLESHOOTING GUIDE
A
MODE
Models
Enclosure Mount
DTMV40
24-hour, Outdoor NEMA 3R Enclosure
DTQMV40
24-hour w/Battery Backup,
Outdoor NEMA 3R Enclosure
DTMV40-IM
24-hour, Indoor Metal NEMA 1 Enclosure
(See page 1)
In Refrigeration Mode
Arrow on timer points to current time.
Trippers are “IN”
Indicates
Refrigeration
“Green” LED ON
DTQMV40-IM 24-hour w/Battery Backup,
Indoor NEMA 1 Enclosure
Models
“1 & F” Make
“1 & 3” Break
Non-Enclosure Mount
F
DTMV40-M
24-hour, Mechanism Only
DTQMV40-M
24-hour w/Battery Backup, Mechanism Only
DTMV40-P
24-hour, Panel Mount
TIMER
RELEASE
RELAY
TIMER
3
1
2
4
L1
N
L2/N
In Defrost Mode
TIMER
DTQMV40-P
24-hour w/Battery Backup, Panel Mount
DTMV40-B
24-hour, Bracket Mount
DTQMV40-B
24-hour w/Battery Backup, Bracket Mount
“2 & 4” Make
X
TIMER
RELEASE
RELAY
Arrow on timer points to current time.
F
3
1
2
4
L1
N
F
3
1
2
TIMER
RELEASE
RELAY
3
L1
1
2
4
L1
X
TIMER
RELEASE
RELAY
TIMER
“1 & F” Break
“1 & 3” Make
PROGRAMMING (Synchronous and Quartz
Electromechanical Models)
N
4
“Red” LED ON
F
Trippers are “OUT”
Indicates
Defrost
L2/N
TIMER
Note: All units with Battery Backup provide up to a week of
reserve carryover.
X
L2/N
N
X
L2/NTIMER
RELEASE
RELAY
TIMER
“2 & 4” Break
F
3
1
2
4 TIMER N
F
3
L1
1
2
4
TIMER
RELEASE
RELAY
X
L2/N
N
X
Setting the Time:
L1
Turn the minute hand clockwise until the time of day (and AM
or PM) on the outer dial is aligned with the triangle marker on
the inner dial.
L2/N
TIMER
RELEASE
RELAY
TIMER
DTMV40 TROUBLESHOOTING GUIDE
3
1
3
1
L1
F
MODE
F
TIMER
RELEASE
RELAY
N
X
B2 (See4 page
1)
TIMER
2
4
N
L2/N
Arrow on timer
time.
L2/N
L1 points to current
TIMER
Setting Defrost Initiation Time:
Move a white tab (tripper) on the outer dial outward at each
desired initiation time. For example, to set defrost initiation
times at 6:00AM, 11:30AM, 4:30PM and 11:00PM, move the
tab adjacent to the “M” in AM on the dial (6:00AM), the tab that
lies between 11:30AM and 11:45 AM, the tab between 4:30PM
and 4:45PM, and the tab adjacent to the 11:00–11:15PM
marks. (See note for 8243/6243 replacement.)
Both LED’s ON
F
3
1
2
4
F
3
L1
1
2
4
L1
TIMER
RELEASE
RELAY
TIMER
TIMER
RELEASE
RELAY
N
“1 & F” Make
“1 & 3” Break
TIMER
RELEASE
RELAY
TIMER
RELEASE
RELAY
3
1
2
4 TIMER N
X
F
3
L1
1
2
4
X
L2/N
N
3
1
“2 & 4” Break
L2/N
TIMER
8
X
F
F
Trippers are “IN”
Indicates
Refrigeration
L2/N
L1
Different defrost durations may be set for each defrost initiation
setting. Each white tab (tripper) provides a 15 minute interval.
The tabs that set the initiation time provide a minimum of 15 minutes of defrost. For longer defrost duration, move additional tabs
(following in time) from the initiation tab. For example, if a 45
minute defrost is to start at 7:00AM, move the tab outward that
lies between 7:00 and 7:15 on the AM side of the dial, and the
tabs adjacent to 7:15-7:30 and 7:30-7:45.
(3 tabs moved outward). The defrost will
initiate at 7:00AM and time terminate at
7:45AM (if temperature termination does
not occur first.)
X
L2/N
N
TIMER
Setting Maximum Defrost Duration:
For electronic models, refer to separate programming instructions.
X
In Refrigeration Mode
DO NOT ROTATE MINUTE HAND COUNTER-CLOCKWISE
2
TIMER
RELEASE
RELAY
TIMER
RELEASE
RELAY
4 TIMER N
In Defrost Mode
X
Arrow
1
2 to current
3 timer
4
Ntime. X
L1points
L2/N
F on
L1
L2/N
TIMER
TIMER
RELEASE
RELAY
Trippers are “OUT”
Indicates
Defrost
Both LED’s OFF
F
3
1
2
4
L1
N
L2/N
“1 & F” Break
“1 & 3” Make
TIMER
F
3
1
L1
X
2
4
TIMER
RELEASE
RELAY
N
“2 & 4” Make
X
L2/N
Note: It is necessary to apply power across terminals 1&N
in order to perform electrical test.
7 A
M
2
TYPICAL WIRING DIAGRAMS
All switch positions are shown in refrigeration cycle operation, and change position upon initiation of a defrost.
DTMV40
Time/Time
–Electric
DefrostDefrost
WiringWiring
Diagram
DTMV40
Time/Time–Electric
DefrostDefrost
WiringWiring
Diagram
DTMV40
Time/Time
–Electric
Diagram
DTMV40
Time/Time–Hot
Gas Defrost
WiringWiring
Diagram
DTMV40
Time/Time
–Electric Defrost
Wiring
Diagram
DTMV40
Time/Time–Electric
Diagram
DTMV40
Time/Time–Hot
GasGas
Defrost
Diagram
DTMV40
Time/Time–Electric
Defrost Wiring
Diagram
8045 Replacement
DTMV40
Time/Time–Hot
Defrost Wiring
Diagram
DTMV40
Time/Time
–Electric Defrost Wiring Diagram
8041 Replacement
8045
Replacement
8043 Replacement
8045
Replacement
DTMV40
Time/Time–Electric
Defrost
Wiring
Diagram
DTMV40
Time/Time–Hot
Gas Defrost Wiring Diagram
8041
Replacement
80438043
Replacement
8041 Replacement
Mode
A
with
8045
Label
Applied
Replacement
DTMV40
Time/Time
–Electric
Defrost
Wiring
Diagram
Replacement
8045
Mode
A
with
8041
Label
Applied
DTMV40
Time/Time
–Electric
Defrost
Wiring
Diagram
Mode
A with
80458045
Label
Applied
Mode
B
with B
8043
Label
Applied
DTMV40
Time/Time–Electric
Defrost
Wiring
Diagram
Mode
A
with
Label
Applied
8041
Replacement
DTMV40
Time/Time–Hot
Gas
Defrost
Wiring
Diagram
Time/Time–Electric
Defrost
Wiring
Diagram
DTMV40
8043
Replacement
Mode
A
with
8041
Label
Applied
DTMV40
Time/Time–Hot
Gas
Defrost
Wiring
Diagram
Mode
with
8043
Label
Applied
Time/Time
–Electric
DTMV40
Mode A with 8041
Label
Applied
Mode B with
8043
Label Applied
8045
Replacement
DTMV40
Time/Time–Electric
Wiring
Diagram
Mode
A with
8045
LabelDefrost
AppliedWiring Diagram
DTMV40
Time/Time–Hot
Gas
Defrost
8045 Replacement
8041
A withReplacement
8041 LabelDefrost
Applied
8041 Mode
Replacement
B8043
with Replacement
8043 Label
Applied Wiring Diagram
TIMER
Replacement
8043Mode
TIMER
8045 Replacement
DTMV40
Time/Time
–Electric
Defrost
WiringDiagram
Diagram
TIMER
TIMER
Mode
with
8045
Label
Applied
TIMER TIMER
RELEASE
8041 Replacement
DTMV40
Time/Time
–Electric
Defrost
RELEASE Wiring
DTMV40
Time/Time–Electric
Defrost
Wiring
Diagram
8043 Replacement
TIMER
8045ALabel
Applied
Mode A with
TIMER
DTMV40
Time/Time–Hot
GasDefrost
DefrostWiring
Wiring
Diagram
RELEASE
Mode
A
with
8041
Label
Applied
TIMER Diagram
Time/Time–Electric
Defrost
Wiring
DTMV40
B
with
8043
Label
Applied
Mode
RELEASE
DTMV40
Time/Time–Hot
Gas
Diagram
RELAY RELEASE
A
with
8041
Label
Applied
Mode
RELAY
TIMER
RELEASE
Mode
B
with
8043
Label
Applied
RELEASE
RELEASE
RELAY
Mode A with8045
Label Applied
TIMER
8045Replacement
Replacement
RELEASE
TIMER RELAYRELAY
TIMERRELAYRELAY
TIMERTIMER
Mode
A
with
Label
Applied
TIMER RELAY
8041
Replacement
TIMER
Mode
B
with
8043
Label
Applied
TIMER
Replacement
RELAY
RELEASE
TIMER
RELEASE
8041
Replacement
8043
Replacement
RELEASE
TIMER
TIMER
RELAY
TIMER
ModeAAwith
with8045
8045Label
Label
Applied
RELAY TIMER
TIMER
TIMER
RELAY
TIMER
TIMER
TIMER
Applied
Mode
ModeAAwith
with8041
8041Label
Label
TIMERApplied
RELEASE
ModeBBwith
with8043
8043Label
Label
Applied
RELEASE
RELEASE
Mode
Applied
RELEASE
RELEASE
TIMER
TIMER
Mode
Applied
TIMER
RELEASE
DTMV40 Time/Time –Electric Defrost
Wiring
Diagram
RELAY
TIMER
RELAY
TIMER
8045
RELAY
RELAY
RELAY
TIMER
8041
TIMER
RELEASE
DTMV40
Time/Time–Electric
Defrost
Wiring
Diagram
RELEASE
RELAY
Diagram
TIMER
RELEASE
2–Electric
8043
8045 8045
4
X
F Replacement
1-N
8041 8041 DTMV40 Time/Time–Hot Gas Defrost Wiring
2
N
TIMER
Time/Time
–Electric
Defrost
Wiring
Diagram
RELAY
4
X
3
1
LABEL
RELAY
TIMER
LABEL
TIMER
TIM
DTMV40
Time/Time
Defrost
Wiring
Diagram
TIMER
2
8043 TIME
RELAY
3
8045
TIMER
4
X
1
2
F3DTMV40
4
1-N
DTMV40
Time/Time–Electric
Defrost
Wiring
Diagram
3
N
F
LABEL
TIMER
N N 1Time/Time–Electric
2
804
3
4 4 Wiring
X XDiagram
4
X TIMER
Defrost
Diagram
LABEL
F8045 Replacement
1-N
Replacement
8041DTMV40
RELE
1 3 3 2 2Defrost
Time/Time–Hot
Defrost
Wiring
Diagram
RELEASE
TIMER
1 1 Gas
2
8043DTMV40
Replacement
4 4Gas
TIMER2
3 Time/Time–Hot
8045 LABEL LABEL
FDTMV40
NWiring
LABEL
8041
RELEASE LABEL
RELEA
3Replacement
F 8043
N
LAB
RE
2
8043
3Replacement
RELAY
X TIMER
4
RELEASE
TIMER RELEASE
8045
1-N THERMOSTAT
2Applied
N A with
Mode F
A with
8045
Label
Applied
RELAY
4
X TIMER
3Label
TIMER LABEL
1 8041
8041
Replacement
LABEL
RELA
RELAY
Replacement
8041
1
2
RELAY 8041
THERMOSTAT
4
Mode
3
F
N
LABEL
8043
Replacement
8045
L1
B
with
8043
Label
Applied
Mode
TIMER
8045
L1
8041
2
8043
Label
3 A 2with
4
XLABEL8045
TIMER
THERMOSTAT
F Mode
1-N8045
L1
THERMOSTAT
2THERMOSTAT
8043
Mode
with
8045
Label
Applied
3 48041
4AppliedXLABEL
4 4
XApplied
1 2A with
LABEL
THERMOSTAT
LABEL
F F L13 L1
N NL11L1NMode
Label
Mode
X
8041
B with
1 8043
2
L1 L1
F 1Mode
NLABEL
Label
Applied
LABEL
B3with
Applied
2 24Label
3 3Mode
F F
N Applied
COMPRESSOR
2THERMOSTAT
8043
3 1-NA1-N
FAN X
THERMOSTAT
2 SOLENOID
4OR VALVE
X
L1
1 3 3A with 8041
LABEL
COMPRESSOR
LABEL
TIMER
TIMER
L1
COMPRESSOR
FAN FAN
1 48043
4 Label
TIMER
N RELEASE
LABEL
MOTORRELEASE
COMPRESSOR
OR
COMPRESSOR
8045 FAN
OR
8041L1
HOT
COMPRESSOR
OR
MOTOR
RELEASE
8045
SOLENOID
VALVE
OR
THERMOSTAT
2
8041
3
OR
4
X
TIMER
SOLENOID
VALVE
MOTOR
L1
THERMOSTAT
DEFROST
F
1-N
LINE
OR
RELAY
HOT HOT CONNECT ACROSS
COMPRESSOR
TIMER TIMER
DEFROST
RELAY 4
4 TIMERXX
TIMER
L1FAN FAN
TIMER
1 THERMOSTAT
LABEL
TIMER
SOLENOID
VALVE
L1
LABEL
FAN
2MOTOR
3CONTACTOR
XRELEASE
OR 1-N
SOLENOID
VALVE
GAS
RELAY 4
F THERMOSTAT
TIMER
L1
CONTACTOR
RELEAS
NN 1DEFROST
22ORCONTACTOR
COMPRESSOR
33
L1 VALVE
F GAS33COMPRESSOR
SOLENOID
VALVE
LABEL
LINE HEATER
LABEL
ORCOIL
OR
DEFROST
RELEASE
RELEASE
L1
THERMOSTAT
COIL OR
CONNECT
ACROSS
LINE DEFROST
11 CONNECT
22 NN RELEASE
HEATERDEFROST
44 ACROSS
CONTACTOR
COIL
L1
THERMOSTAT
FGAS
L
OR
TIMER
RELEASE
OR
SOLENOID
VALVE
L1
HEATER
HOT VALVE
FAN
CONTACTOR
COIL COIL
RELAY RELAY
COMPRESSOR COIL
RELAY RELAY
HEATER
TIMER
FANTIMER
HEATER
SOLENOID
VALVE
L1
CONTACTOR
COMPRESSOR OR
RELAY RELAY
TIMER TIMER
HEATER
COMPRESSOR
DEFROST
FAN
LINE
VALVE
DEFROST
OR
COMPRESSOR
COMPRESSOR OR COMPRESSOR
ACROSS
CONNECT
THERMOSTAT
TIMER
GAS
OR
CONTACTORSOLENOID
COIL
MOTOR
ORFAN
THERMOSTAT
TIMER
COMPRESSOR
VALVE
MOTOR
L1
THERMOSTAT
HEATER
OR
HOT
FAN
CONTACTOR
COIL
THERMOSTAT
L1
SOLENOID
VALVE
HEATER
THERMOSTAT
COMPRESSOR
SOLENOID
VALVE
HOT
FAN
VALVE
L1
THERMOSTAT
THERMOSTAT
OR
OR
COMPRESSOR
DEFROST
L1
L1
SOLENOID
VALVE
LINE
L2
DEFROST SOLENOID
OR
MOTOR
DEFROST
L2
OR
L2
LINE
CONNECT
ACROSS
8045
OR
GAS
DEFROST
VALVE
CONTACTOR
COIL
L1
8041
CONNECT ACROSS
HOT
FAN
OR
HEATER
THERMOSTAT
HEATER
L2
L1
L2
CONTACTOR COIL
OR
CONTACTOR COIL
THERMOSTAT
HEATER
COMPRESSOR
COMPRESSOR
OR
OR VALVE
SOLENOID
SOLENOID
ORVALVE
OR
CONTACTOR
COIL
CONTACTOR COIL
8041 8041
LABEL LABEL
L2
L1
LINE
LINE
L2F
LINE
HEATER
2
4
X
LABEL
FAN
N
32 24 4X X
1 3DEFROST
N HEATER
FAN1
DEFROST
L21L2HEATER
3
DEFROST
L2
LINE
LINE
LINE
LINE
LINE
LINE
N
8045 8045
LABEL LABEL
COMPRESSOR
OR
OR VALVE
SOLENOID
SOLENOID
ORVALVE
OR
CONTACTOR
COIL
CONTACTOR COIL
GAS
L2VALVE
L2GAS
L2
THERMOSTAT
8043
COMPRESSOR
1VALVE COMPRESSOR
2ACROSS
4CONNECT
3VALVE
N 1–4 LABEL
HOT
THERMOSTAT
COMPRESSOR
Bridge
Between
HOT
1 4Bridge
2 N 1–4
4Bridge
3THERMOSTAT
N1–4
F NOTE:
1
2
ACROSS
CONNECT
GAS
3Remove
FNOTE:
Remove
Between
THERMOSTAT
NOTE:
Remove
Between
CONNECT
ACROSS
GAS
VALVE
LINE
LINE
OR
CONTACTOR COIL
LINE
FAN
FANLABEL
MOTOR
X
F LINE
1-N 2 2 4 4 X
MOTOR
3 3 1-N
F HEATER
DEFROST
DEFROST
LINE
L2
3 33
333 3
3
3
3 33
LINE
LINE
L2
L1
L23L2
HEATER
VALVE
2SOLENOID
CONTACTORX
COIL
1-N CONTACTOR
HEATER
DEFROST
COIL 4
COMPRESSOR
LINE
L2
LINE
F
LINE
LINE
2 22
222 2
2
2
2 22
LINE
1 11
111 1
1
1
1 11
8043 80
LABEL LA
L2
L2Remove
NOTE:
Bridge Between 1-N –2
Remove
Bridge
Between
Remove
Bridge
Between
1-N –21-N –2
*See NoteNOTE:
2 NOTE:
*See*See
NoteNote
2 2
3
L2
LINE
120V
120V
240V
120V
120V
120V
120V
120V
240V
240V
LINE
LINE
LINE
LINE
LINE
LINE
LINE
LINE
LINE
LINE
LINE
LINE
LINE
LINE
LINE
LINE
LINE
LINE
L2 L2
240V
240V
240V
240V
120V
240V120V 240V
240V
240V
LINE
1212
12
1212
12
12 12
12
12 1212
LINE
L2
LINE
L2
LINE
LINE
LINE
LINE
LINE
LINE
111111
11
11
11 1111
11
11 1111
LINE
LINE
LINE
9 99
999 9
9
9
9 99
LINE
LINE
LINE
LINE
LINE
LINE
LINE
LINE
LINE
120V
LINE
LINE
LINE
LINE
LINE
LINE
LINE
120V
120V
240V
6 66
666 6
6
6
6 66
5 55
555 5
5
5
5 55
1010
10
10
10
10
10 10
10
10 1010
LINE
L2
LINE
THERMOSTAT
THERMOSTAT
COMPRESSOR
OR
SOLENOID VALVE
COMPRESSOR
COMPRESSOROR
OR
OR
CONTACTOR COIL
SOLENOID VALVE
SOLENOID VALVE
OR
DEFROST
OR
DEFROST
CONTACTOR COIL
CONTACTOR COIL
LINE
L2
L2
DEFROST
FAN
FAN
HEATER
LINE
LINE
L1 L1
FAN
8 88
888 8
8
8
8 88
LINE
LINE
LINE
LINE
LINE
7 77
777 7
7
7
7 77
LINE
L2
LINE
LINE
LINE
LINE
LINE
LINE
4 44
444 4
4
4
4 44
THERMOSTAT
THERMOSTAT
FAN
COMPRESSOR
MOTOR
OR
FAN
SOLENOID VALVE
COMPRESSORFAN
COMPRESSOROR
OR
MOTORMOTOR
OR
SOLENOID VALVE
CONTACTOR
COIL SOLENOID
DEFROST
VALVE
DEFROST
OR
OR
HEATER
CONTACTOR COIL
HEATER
CONTACTOR COIL
LINE
L2
L2
DEFROST
HEATER
LINE LINE
LINE
L1 L1
LINE
VALVE
Remove
COMPRESSOR
Between
1–4
COMPRESSOR
THERMOSTAT
THERMOSTAT
Bridge
Between
NOTE:
Bridge
L1
L1 NOTE:
NOTE:
Remove
1–4
Remove
Bridge
Between 1–4
L2
HOT
L2
NOTE: Remove
Bridge
Between 1–4
CONNECT
ACROSS
GAS
HOT HOT
VALVE
COMPRESSOR
NOTE:CONNECT
Remove
Bridge
Between
1–4
ACROSS
CONNECT
Time/Time–Electric
DefrostDefrost
WiringWiring
Diagram
DTMV40
DTMV40
Time/Temp.–Electric
Defrost
Wiring
Diagram
ACROSS
GAS GAS
NOTE:
Remove
Bridge
Between
1–4
HEATER Defrost Wiring Diagram
DTMV40
Time/Time–Electric
Diagram
DTMV40
Time/Temp.–Electric
THERMOSTAT
DTMV40
Defrost
Wiring
Diagram
VALVE
HEATER
COMPRESSOR
DTMV40
Time/Time–Electric
Defrost Wiring
Diagram
DTMV40
Time/Temp.–Electric
Defrost
Wiring
Diagra
VALVETime/Temp.–Electric
COMPRESSOR
DTMV40
Time/Temp.–Electric
Defrost
Wiring
Diagram
DTMV40
Time/Temp.–Electric
Defrost
Wiring
Diagram
8047 Replacement–Double
Pole Switching
120V Fan
& Fan
Defrost
Heater;
240V Compressor
THERMOSTAT
L2
DTMV40
Time/Time–Electric
Defrost
Wiring
Diagram
L2
L2
DTMV40
Time/Temp.–Electric
Defrost
Wiring
Diagram
THERMOSTAT
8047
Replacement–Double
Pole
Switching
8145 Replacement
120V
&
Defrost
Heater;
240V
Compressor
8047
Replacement–Double
Pole
Switching
120V
Fan
&
Defrost
Heater;
240V
Compressor
DTMV40
Time/Temp.–Electric
Defrost
Wiring
Diagram
81458145
Replacement
L2
Replacement
Mode
B
with
8047
Label
Applied
L2
L2
Mode
A
No
Label
Required
L2
DTMV40
Time/Time–Electric
Defrost
Wiring
Diagram
L2
DTMV40
Time/Temp.–Electric
Defrost
Wiring
Diagram
L2
8047
Replacement–Double
Pole
Switching
120V
FanMode
&ADefrost
Heater;
240V
Compressor
DTMV40 Time/Time–Electric
Defrost
Wiring
Diagram
B with
8047
Label
Applied
Mode
DTMV40
Time/Temp.–Electric
Defrost
Wiring
Diagram
Mode
A
- NoALabel
Required
Mode
- Bridge
No
Required
DTMV40
Time/Temp.–Electric
Defrost
Wiring Diagram
Mode
B with
8047
Label
Applied
A - Label
No
Label
Required
8145
Replacement
NOTE:
Remove
Between
1–4
DTMV40
Time/Temp.–Electric
Wiring
Diagram
Mode
- No
Required
DTMV40
Time/Time–Electric
Defrost
Wiring
DTMV40
Time/Temp.–Electric
Defrost
Wiring
Diagram
A - Label
No Defrost
Label
Required
Mode
8047
Replacement–Double
PoleDiagram
Switching
Fan
& Required
Defrost
Heater;
240V
Compressor
Mode
B with
8047 Label
Applied
DTMV40
Time/Temp.–Electric
Defrost
Wiring Diagram
TIMER
A120V
- NoNOTE:
Label
8047 Replacement–Double
Pole
Switching
120VMode
Fan &
Defrost
Heater;
240V
Compressor
Remove
Bridge
Between
8145
A - NoReplacement
Label Required
NOTE:
Remove
Bridge
Between
TIMER 1–4 1–4
TIMER
Replacement
8145 Mode
RELEASE
8047 Replacement–Double
Pole Applied
Switching
TIMER
DTMV40
Time/Time–Electric
DefrostWiring
Wiring
Diagram
120V
Fan
&
Defrost
Heater;
240V
Compressor
DTMV40
Time/Temp.–Electric
Defrost
Wiring
Dia
TIMER
RELEASE
Mode
B
with
8047
Label
RELEASE
TIMER
DTMV40
Time/Time–Electric
Defrost
Diagram
RELAY
Mode
A
No
Label
Required
TIMER Diag
DTMV40
Time/Temp.–Electric
Defrost
Wiring
8145 Replacement
RELEASE
DTMV40
Time/Temp.–Electric
DefrostTIMER
WiringDiagram
Diagram
120V
Mode B with 8047 Label Applied
Mode
A
No
Label
Required
RELEASE
A
No
Label
Required
Mode
TIMERRELAYRELAY
RELAY
DTMV40
Time/Temp.–Electric
Defrost
Wiring
RELEASE
120V
RELEASE
Mode
A
No
Label
Required
TIMER
TIMERHeater;
Mode B with8047
Label Applied TIMER Pole
120V
8047Replacement–Double
Replacement–Double
PoleSwitching
Switching
LabelFan
Required
Mode A - No120V
TIMER
120V
Fan
Defrost
240V
RELAYCompress
RELEASE
RELAY RELEASE
RELAY
TIMER
RELEASE
&&Defrost
Heater;
240V
Compresso
Mode A - No8145
LabelReplacement
Required TIMER TIMER
Replacement
8145
TIMERTIMERRELAY TIMER
TIMER
RELEASE
TIMER RELAYRELAY
120V
TIMER
TIMER
TIMER
RELEASE
ModeBBwith
with8047
8047Label
LabelApplied
Applied TIMER RELEASE
ModeAA- -No
NoLabel
Label
Required
TIMERRELAY
TIMER
TIMER RELEASE
Mode
Mode
Required
RELEASE
NoLabel
LabelRequired
Required
ModeAA- -No
TIMER
RELAY
TIMER
120V
RELEASE
TIMER RELAY
RELAY
TIMER
Mode
RELEASE
120V Wiring
RELAY
DTMV40 Time/Time–Electric Defrost Wiring Diagram
RELEASE
DTMV40 Time/Temp.–Electric
Defrost
Diagram
8047
RELAY
TIMER
RELEASE
TIMER
RELAY
TIMER
TIMER
DTMV40 Time/Temp.–Electric Defrost
Wiring
Diagram
120V NRELEASE
2
TIMER
RELAY
4
F
3
TIMERDefrost
TIMER
X
1
8047 TIMER
3
2
4
2
1
N
LABEL
RELAY
TIMER
RELAY
8047
DTMV40
Time/Time–Electric
Wiring
Diagram
RELEASE
DTMV40
Time/Temp.–Electric
Defrost
Wiring
Diagr
TIMER
2
F
3
4
RELEASE
N
XTIMER
1
TIMER
DTMV40
Time/Time–Electric
Defrost
Wiring
Diagram
1
2
3
Time/Temp.–Electric
Defrost
8047 Replacement–Double
4 Switching
2 2 2 2 8047 LABELRELEASE
N N 1 1
120VDTMV40
Fan F
& Defrost
F DTMV40
4 Wiring
3 Heater;
X
N Diagram
1 240V2Compressor
Diagram
3Pole
4 TIMER
LABEL
RELEASE
Time/Temp.–Electric
Wiring
TIMER
RELAY
3 Time/Temp.–Electric
8145
Replacement
4NDefrost
NXWiring
F3DTMV40
XTIMER
120V
2Defrost
3 1 1 24 TIMER
4RELAY
NDiagram
RELEASE
F8145
X
RELAY
2& THERMOSTAT
8047
Replacement–Double
Switching
RELAY
F A -3120V
4 Heater;
120V
N 240V
X
1 Required
RELEASE
120V
Fan
Defrost
Compressor
3 Applied
2 PolePole
4
2Switching
18047
LABEL
8047
Replacement–Double
TIMER
Fan
&
Defrost
Heater;
240V
Compressor
ModeNB with
Label
RELAY
No Label
Mode
RELEASE
TIMER
Replacement
1
2
3
RELAY
TIMER
4
N
TIMER
L1
8047
F
X
8145
Replacement
TIMER
Mode
A
No
Label
Required
THERMOSTAT
L1
8047
RELAY
TIMER
THERMOSTAT
2 Required
4 X N TERMINATION
3 - No
X
1No 4Label
B with
3 8047
2
2LABEL8047 LABEL L1 L13 Mode
N
2A -2
F L1F L13 3FMode
1 Mode
Mode
B1
Applied
3Mode
2 24Label
2 Applied
NL1N L11 1
Label
Required
1 Label
2Required
A THERMOSTAT
- No
THERMOSTAT
X
THERMOSTAT
DEFROST
TIMER
A3
Required
N 4 X N TERMINATION
4 NN
F F L13F 1Mode
X THERMOSTATTERMINAT
1ADEFROST
3with48047
4 Label
2 RELEASE
LABEL
L1
TER
L1 SOLENOID
FAN
TIMER
1- No2Label
2 4
DEFROST
4THERMOSTAT
THERMOS
FAN N
TERMINATION
X
W/FAN
DELAY
THERMOSTAT
FANHEATER
8047 L1
TH
THERMOSTAT
TERMINATION
COMPRESSOR
RELEASE
VALVE SOLENOID
THERMOSTAT
TIMER
RELAY
HEATER
TIMER TIMER8047
FAN
TERMINATION
SOLENOID
FAN
120V
THERMOSTAT
2
HEATER
MOTOR
W/FANX
THERMOSTAT
4
F
3
TIMER
L1
N
1
OR
DEFROST
FAN
RELEASE
COMPRESSOR
DEFROST
W/FAN
DELAY
N
VALVE VALVE
L1
LABEL
W/F
THERMOSTAT
TIMER
L1
OR
RELEASE
COMPRESSOR
4 RELEASE
F
3 THERMOSTAT
XDEL
NRELEASE
1 TIMER 2 RELAY
L1
THERMOSTAT
TERMINATION
MOTOR
33 TIMER
44
22 22 RELEASE
SOLENOID
VALVE
11DEFROST
N
OR
LABEL
1THERMOSTAT
2VALVE
3 COMPRESSOR
FAN
4
N
W/FANX
DELAY
TIMER
MOTOR
SOLENOID
DEFROST
F
OR
LINE L1
OR
CONTACTOR
HEATER
RELAY 4
HEATERDEFROST
W/FAN DELAY
TIMER
TIMER
RELAY RELAY
TERMIN
L1
THERMOSTAT
L1
FAN
1
2
OR
3
N
OR SOLENOID
VALVE
120V 120V
W/FAN
DELAY
F
X
L1
THERMOSTAT
TERMINATION
RELAY
DEFROST
RELEASE
SOLENOID
VALVE
LINE
DEFROST
CONTACTOR
HEATER
RELAY
HEATER
TIMER
DEFROST
RELEASE
CONTACTOR
LINE
DEFROST
CONTACTOR
MOTOR
THERM
TIMER
TERMINATION
HEATER
L1
THERMOSTAT
ORCOIL OR
DEFROST
TIMER
OR
W/FAN
DELAY
FAN
THERMOSTAT
RELAY
TERMINATION
TERMINATION
TIMER
TIMER
OR
SOLENOID
N
HEATER
THERMOSTAT
HEATER
CONTACTOR
COIL
FAN N L1HEATER
RELAY
TIMER
SOLENOID
FAN
HEATER
SOLENOID VALVE
DEFROST
CONTACTOR COIL
W/FAN
THERMOSTAT
THERMOSTAT
DEFROST
FAN
COMPRESSOR
LINE
CONTACTOR
VALVE
L1
W/FAN
DELAY
HEATER
THERMOSTAT
THERMOSTAT
TERMINATION
COMPRESSOR
N
OR
L1
L2 VALVE
FAN
MOTOR
SOLENOID
L1 DEFROST
ORFAN
DEFROST
HEATER COMPRESSOR
W/FAN DELAYL2
MOTOR
L1 HEATER OR
THERMOSTAT
OR
CONTACTORSOLENOID
COIL THERMOSTAT
W/FANTHERMOSTAT
DELAY
8047
COMPRESSOR
VALVE
L1
VALVE
COMPRESSOR
L21 CONTACTOR
DEFROST
SOLENOID
VALVE
LINE
DEFROST
2OR
L2
4COMPRESSOR
FNL2 L23
HEATER
MOTOR
X W/FAN DELAY
N
1 FANSOLENOID
3SOLENOID
OR
NOTE:
Move
Bridge
to 2–2
DEFROST
LINE L2 DEFROST
2to 2–2
4
OR
22–2
NORL2
VALVE OR
CONTACTOR
LABEL
W/FAN DELAY
TERMINATION
HEATER
DEFROST
OR
OR
OR
HEATER
VALVE
1 CONTACTOR
2SOLENOID
TERMINATION
HEATER
NOTE:
Move
Bridge
3L2HEATER
L2
OR SOLENOID
4CONTACTOR
NCOIL X MOTOR
VALVE VALVE
FAN
8047 8047 F LINE
DEFROST
FANCONTACTOR
COMPRESSOR
NOTE:
Move
Bridge
to
COIL
SOLENOID
CONTACTOR
THERMOSTAT
2
SOLENOID
HEATER
4
3
COMPRESSOR
HEATER
NF F 3
VALVE 1
3
OR
2
4
L2
FAN
COIL1
2
N
OR 2OR
LABEL
4
N NX X
1
N
THERMOSTAT
3
NOTE:
OR
2
4
2
1
COMPRESSOR
N
LABEL
VALVE
OR
HEATER
DEFROST
W/FAN
DELAY
CONTACTOR
COIL
1
2
L2
3
COIL COIL
4 MOTORN X X W/FAN
OR
Move
BridgeDEFROST
to 2–2
SOLENOIDCONTACTOR
VALVE
1DEFROST
2 SOLENOID
L2 NOTE:
NOTE:
3
OR
CONTACTOR
4ORVALVE
F FLINE
SOLENOID
VALVE N
THERMOSTAT
COMPRESSOR
L2
OR
NOTE:
DEFROST
LINE
CONTACTOR
COMPRESSOR
OR
HEATER
L1 DELAY N L2
L1 L2
OR
L2
CONTACTOR
HEATERto 2–2
OR
CONTACTOR COIL
L2
OR
HEATER
NOTE:
Move
Bridge
CONTACTOR
COIL
THERMOSTAT
NOTE:
COMPRESSOR
SOLENOID VALVE
L2
L1
THERMOSTAT
NOTE:
Move
Bridge
to 2–2
THERMOSTAT
HEATER
SOLENOID VALVE
L2
TERMINATION
L1
CONTACTOR COIL
N
OR
L1
OR
L1
DEFROST
OR
N CONTACTOR
L2
L1 NOTE:
Bridge to 2–2
THERMOSTAT
SOLENOID
VALVE
CONTACTOR COIL
TERMINATION
L1
THERMOSTAT
L2 Move
FAN
NOTE:
COIL
SOLENOID
T
L1
THERMOSTAT
COMPRESSOR
NOTE:
OR
FAN
L2
W/FAN DELAY TERMINAT
L2HEATERFAN
DEFAULT
(Out
of
the Box)
DEFROST
THERMOSTAT
COMPRESSOR
COMPRESSOR
VALVE
OR
DEFROST
CONTACTOR
COIL
T
TERMINATION
L2
L2
NOTE:
MOTOR
THERMOS
TERMINATION
SOLENOID
OR
DEFROST
OR VALVE
NOTE:
Move
Bridge
to
2–2
W/FAN
DELAY
SOLENOID
HEATER
FAN
OR
SOLENOID
FAN
L2
HEATER
W
THERMOSTAT
NOTE: Move Bridge to 2–2
SOLENOID VALVE
SOLENOID
COMPRESSORFAN
VALVE
ORVALVE
W/FAN DE
THERMOSTAT
DEFROST
LINE
COMPRESSOROR
CONTACTOR
VALVE
HEATER
MOTOR
OR
DEFROST
OR
CONTACTOR COIL
W/FAN DELAY
MOTOR
OR NOTE:
OR
DEFROST
W/FAN DELAY
HEATER
OR
CONTACTOR COIL
SOLENOID VALVE
CONTACTOR
COIL
DEFROST
NOTE:
SOLENOID VALVE
CONTACTOR
HEATER
N
DEFROST
LINE LINE
OR
CONTACTOR
DTMV40
Time/Temp.–Electric
Defrost
WiringWiring
Diagram
HEATER
DTMV40
Time/Temp.–Hot
Gas
Defrost
Wiring
Diagram
OR
HEATER
CONTACTOR COIL
Time/Temp.–Electric
Defrost
Diagram
HEATER
L2 DTMV40
CONTACTOR
COIL
DTMV40
Time/Temp.–Hot
Gas
Defrost
Wiring
Diagram
DTMV40
Time/Temp.–Electric
Defrost Wiring
Diagram
N
COMPRESSOR
DTMV40
Time/Temp.–Hot
Gas
Defrost
Wiring
Diagram
N Time/Temp.–Electric
L2
8141 NOTE:
Replacement
OR
8143
DTMV40
Defrost
WiringWiring
Diagram
L2 Replacement
L2
DTMV40
Time/Temp.–Electric
Defrost Wiring Diagram
Move
Bridge to 2–2
DTMV40
Time/Temp.–Hot
Gas Defrost Wiring Diagram
SOLENOID VALVE
COMPRESSOR
8141
Replacement
L2
8143
Replacement
8141
Replacement
COMPRESSOROR
L2DTMV40
Time/T
emp.–Electric
Defrost
Diagram
8143
Replacement
OR
Time/T
emp.–Electric
Defrost Wiring
Diagram
L2 DTMV40
OR
L2Label Applied
Mode
A
with
Label
Applied
NOTE:
Move
Bridge
to Wiring
2–2 Diagram DTMV40
CONTACTOR COIL
Mode
B
withL2
8143
SOLENOID
VALVE
DTMV40
Time/Temp.–Electric
Defrost
8143 Replacement–Double
Pole
Switching
8141
Replacement
NOTE:
NOTE:
Move
Bridge
to Diagram
2–2
DTMV40
Time/Temp.–Hot
Gas
Defrost
Wiring Diagram
SOLENOID
VALVE
DTMV40
Time/Temp.–Electric
Defrost
Wiring
8143
Replacement
Mode
A8141
with
8141
Label
Applied
DTMV40
Time/T
emp.–Electric
Defrost
Wiring
Diagram
Time/Temp.–Hot
Gas8143
Defrost
Wiring
Diagram
OR Pole
Mode
B
with
8143
Label
Applied
Mode
A
with
8141
Label
Applied
8143
Replacement–Double
Switching
OR
Mode
B
with
Label
Applied
8143 Replacement–Double
CONTACTOR COIL Pole Switching
DTMV40
Time/Temp.–Electric
Defrost
Wiring
Diagram
DTMV40
Time/Temp.–Hot
Gas
Defrost
Wiring
Diagram
NOTE:
CONTACTOR
COIL
8141
Replacement
NOTE:
Mode
B
with
8143
Label
Applied
Mode A with 8141 Label Applied TIMER
8143
8141 Replacement
DTMV40
Time/T
emp.–Electric
Defrost
Wiring Diagram
B withReplacement
8143 Label Applied
TIMER
8143
Replacement–Double
Pole
Switching
8143 Mode
Replacement
DTMV40
Time/T
emp.–Electric
Defrost
Wiring
Diagram
Mode
B
with
8143
Label
Applied
Mode B with 8143
Label Wiring
AppliedDiagram
TIMER
RELEASE
8141 Replacement
DTMV40
Time/Temp.–Electric
Defrost
Wiring
Diagram
8143 Replacement
TIMER
TIMER
DTMV40
Time/Temp.–Hot
GasDefrost
Defrost
Wiring
Diagram
DTMV40
Time/T
Defrost
RELEASE
Mode
with
8141
Label
Applied
TIMER Diagram
DTMV40
Time/Temp.–Electric
Defrost
Wiring
RELEASE
Mode
with
8143
Label Applied
DTMV40
Time/Temp.–Hot
Gas
Wiring
Diagram
RELAY
Mode A with
8141ALabel
Applied
Replacement–Double
Pole Switching
RELEASE
B8143
withemp.–Electric
8143 LabelPole
Applied
Mode B with
8143BLabel
Applied
TIMER
8143Mode
Replacement–Double
Switching
RELAY RELEASE
TIMER
RELEASE
TIMER RELAYRELAY
Mode A with8141
Label Applied
TIMERRELAY
TIMER
8141Replacement
Replacement
RELEASE
TIMERTIMER
Mode B with8143
Label Applied TIMER
8143Replacement
Replacement
8143 Replacement–Double
Pole Applied
Switching
TIME
RELAY
DTMV40
Time/T
emp.–Electric
Defrost
Wiring
Diagr
RELEASE
RELEASE
RELEASE
Mode
BLabel
with
8143
Label
TIMERTIMER
DTMV40
Time/T
emp.–Electric
Defrost
Wiring
Diagra
RELAY
RELEA
Mode
B
with
8143
Applied
RELAY
TIMER
TIMER RELAYRELA
TIMER
RELAY TIMER
TIMER
ModeAAwith
with8141
8141Label
Label
TIMERApplied
RELEASE
Mode
B
with
8143
Label
Applied
Mode
B
with
Label
Applied
8143
Replacement–Double
Pole
Switching
TIMER
RELEASE
RELEASE
Mode
Applied
RELEASE
TIMER
TIMER
Mode B with 8143 Label Applied
8143
Replacement–Double
Pole
Switching
RELEASE
RELAY
TIMER
TIMER
RELAY
TIMER
RELAY
RELAY
TIMER
TIMER
8141
RELEASE
DTMV40
Diagram
TIMER
RELAY
DTMV40 Time/Temp.–Hot Gas Defrost Wiring Diagram
TIMER Wiring
RELEASE
8143
RELEASE
ModeBBwith
with8143
8143Label
Label
Applied
8141 8141
N Time/Temp.–Electric
2 Defrost
TIMER
RELAY
3 Time/Temp.–Electric
LABEL
RELEASE
TIMERX
TIMER
TIMER
TIMER
8143 TIMER
Mode
Applied
RELAY
Defrost
Diagram
1 DTMV40
TIMER
N1 DTMV40
RELAY
8143
X
Time/Temp.–Hot
Defrost
Diagram
LABEL
4X 4
Wiring
Diagram
N 1Time/Temp.–Electric
2 Defrost
RELAY
8141 DTMV40
Replacement
XWiring
RELEASE
1 3 3 24 TIMER
Time/Temp.–Hot
Defrost
Diagram
RELEASE
TIMER
34 3 42Gas
2
8143
Replacement
TIMER2 Wiring
1NDTMV40
X Wiring
N3 N
LABEL
DTMV40 Time/Temp.–Electric Defrost Wiring Diagram
8141
RELEASE LABEL
4 Gas
RELEASE
1 8143
X LABEL
8143
LABEL
RELAY
8143
RELAY
TIMER
2
N
RELAY
3
X
TIMER XDefrost
TIMER RELEASE
1
LABEL
4
8143 TI8T
8141
Replacement
RELAY
3
2
4
1
Replacement
LABEL
N
8141
Replacement
DTMV40
Time/T
emp.–Electric
Wiring
Diagram
3
2
RELAY
THERMOSTAT
4
A with 8141 Label Applied THERMOSTAT TIMER
1
X
LABEL
N
8143
Replacement
RE
Mode
B
with
8143
Label
Applied
8141
DTMV40
Time/T
emp.–Electric
Defrost
Wiring
Diagram
TIMER
3
8143
Replacement–Double
Pole
Switching
2
4
1
L1 Mode
X
N
LABEL
TIMER
8141
3
4
2
REL
8143
1
N
LA
X
TIMER
THERMOSTAT
2Label
R
8143
8143
3 48141
1 2A with
LABEL L1
4AppliedXLABEL
N NL11L1NMode
Mode
X
8141
B4with
Applied
RE
3 8143
2
4Label
L1 N
1 3Mode
XLABEL
Label
Applied
8143
Replacement–Double
Pole
Switching
LABEL
3
BN
with
8143
Label
Applied
2
2
4
L1 Mode
1
1
X
TERMINATION
COMPRESSOR
X
N
LABEL
8143
Replacement–Double
Pole
Switching
8143
Mode
B
with
8143
Label
Applied
THERMOSTAT
2 SOLENOID
TIMER
X
1 3 3A with 8141
LABEL TERMINATION
4OR VALVE
TIMER
L1
TERMINATION
COMPRESSOR
8143
3
2
TIMER
4
L1
THERMOSTAT
TIMER
1
X
LABEL TERMINATION
N
TERMINATION
COMPRESSOR
8143
L1
OR
RELEASE
8141
Mode
B
with
8143
Label
Applied
3
HOT
FAN
4
2
1
THERMOSTAT
L1
THERMOSTAT
N
LABEL
X
OR
TERMINATION
RELEASE
Mode
B
with
8143
Label
Applied
3
W/FAN
DELAY
THERMOSTAT
2
4
1
TIMER 8143
8141
L1
THERMOSTAT
X
N
LABEL8143
OR SOLENOID
VALVE VALVE
THERMOSTAT
2
N
RELAY
HOT
TERMINATION
COMPRESSOR
TIMER
DEFROST
3
X
TIMER
L1FAN FAN
THERMOSTAT
1
LABEL
4
SOLENOID
8143
ACROSS
CONNECT
TIMER
GAS
W/FAN DELAY DELAY
RELAY 4
TIMER
TIMER
CONTACTOR
COIL
THERMOSTAT
OR
RELEASE
N
2VALVE
3
3 SOLENOID
XTHERMOSTAT
XDELAY
1 HOT N CONNECT
4
2
1DEFROST
LABEL
1
OR
N
X RELEASE LABEL
TERMINATION
OR
RELEASE
RELEASE W/FAN
L1 LABEL FANL1 VALVE
THERMOSTAT
L1 SOLENOID
ACROSS
GAS
FAN FAN1
33 CONNECT
22 W/FAN
W/FAN DELAY
HEATERDEFROST
44 ACROSS
CONTACTOR
COIL COIL RELEASE
X
LABEL
TIMER
RELAY
DELAY
L1
CONTACTOR
HOTVALVEGASN COMPRESSOR
FAN
THERMOSTAT
RELAYW/FAN
TERMINATION
COMPRESSOR
RELAY
HEATER COMPRESSOR
VALVE SOLENOID
W/FAN
DELAY
L1
RELAY
TIMER TIM
TERMINATION
OR
RELAY
TIMER TIMER
SOLENOID
COMPRESSOR
VALVE THERMOSTAT
DEFROST HEATER
OR
TERMINATION
DEFROST
COMPRESSORTIMER
RELE
3 TIMER
4
ACROSS
CONNECT
TIMER
1 DEFROST
VALVE VALVE
FAN
GAS
L1
NDEFROST
W/FAN DELAY
OR
CONTACTOR
COIL THERMOSTAT
TERMINATION
OR
L1
TERMINATION THERMOSTAT
COMPRESSOR
SOLENOID
VALVE THERMOSTAT
3
22TERMINATION
4
1
XX RELEASE
N
HOT
FAN
THERMOSTAT
L1 HEATER
THERMOSTAT
SOLENOID VALVE
SOLENOID OR
THERMOSTAT
CONTACTOR
W/FAN
DELAY
HOT
FAN
VALVE
HEATER
THERMOSTAT
THERMOSTAT
RELAY REL
OR
OR
TERMINATION
COMPRESSOR
OR
L1
L1
W/FAN
DELAY
L1
THERMOSTAT
DEFROST SOLENOID
OR
L2 FANL2 DEFROST
VALVECONTACTOR
L2
CONNECT ACROSS W/FANTHERMOSTAT
FAN
GASCONNECT ACROSS
TERMINATION
W/FAN DELAY
HEATER
VALVE
CONTACTOR COIL
L1
8141
THERMOSTAT
HOT
CONTACTOR
FAN
GAS
TERMINATIO
DELAY
TIMER
HEATER
CONTACTOR COIL
DEFROST
W/FAN
DELAY
THERMOSTAT
8143
TERMINATIONL2 L2
COMPRESSOR
TIMER
OR
SOLENOID
N
2 CONTACTOR
THERMOSTAT
VALVE COMPRESSOR
3 HEATER
X COMPRESSOR
1L2HEATER
LABEL
4
DEFROST
SOLENOID OR
COMPRESSOR
TERMINATION
CONNECT
ACROSS
THERMOST
VALVE
FAN
GAS
OR
TERMINATION
W/FAN
DELAY
COIL
8141
3
2
4
1
X 3–4 LABEL
CONTACTOR
L1 VALVE HEATER DEFROST
THERMOSTAT
TERMINATION
NVALVE
8141THERMOSTAT
L2 VALVE
8143
SOLENOID
VALVE
SOLENOID
L1
L2
HOT
FAN
N
THERMOSTAT
THERMOSTAT
8143TERMINATION
3 2 2 4 SOLENOID
X
1 3DEFROST
LABELL2
4OR
OR
COMPRESSOR
DEFROST
W/FAN
DELAY
THERMOSTAT
NOTE:
Bridge
Between
THERMOSTAT
N HEATER
8143
OR
XVALVE
HOT
LABELW/FAN
FAN1
THERMOSTAT
3 4Bridge
2 X 3–4
4Bridge
VALVE
1FAN
X3–4 LABEL
L2N CONTACTOR
N
LABEL DELAY
DELAY
3
2Between
CONNECT
ACROSS
OR
GAS
FAN
W/FAN
NOTE:
Remove
HEATER
NRemove
CONTACTOR
COIL
3SOLENOID
NOTE:
Remove
Bridge
Between
3–4 3–4
DEFROST
4
2Bridge
DEFROST
1ORL2
TERMINATION
LABEL TERMINATION
X
THERMOSTAT
NOTE:
Remove
Between
HEATER
CONNECT
ACROSS
OR
W/FAN DELAY
THERMOSTAT
L2
CONTACTOR COIL
L2 1
HEATER
NOTE:
Remove
Bridge
Between
L2CONTACTOR
L2
VALVE
1
*See
Note
1GAS
COMPRESSOR
8143
NOTE:
Remove
Between
3–4X THERMOSTAT
THERMOSTAT
SOLENOID
CONTACTOR
HEATER
TERMINATION
HEATER
VALVE
L1 L2
VALVE N
3
2
4
NOTE:
Remove
Bridge
Between
3–4
COMPRESSOR
1
*See
Note
1
3
NOTE:
Connect
Bridge
Between
2–X
L2
THERMOSTAT
2
4
1
LABEL
X
N
VALVE
*See Note 1
DEFROST
THERMOSTAT
THERMOSTAT
THERMOSTAT
ORConnect
NOTE:
Remove
Bridge
Between
3–4
L2
TERMINATION
COMPRESSOR
NOTE:
Bridge
Between
2–X
DEFROST
L1 L1
THERMOSTAT
L1
L2
OR
NOTE:
Connect
Bridge Between 2–X
CONTACTOR
L1 NOTE:
TERMI
NOTE:
Remove
Bridge
Between
3–4
OR
HEATER
TERMINATION
*See
Note
1Bridge
L1 L2
THERMOSTAT
Remove
Between
3–4
CONTACTOR
TERMINA
HEATER
L2
L2
SOLENOID VALVE
TERMINATION
COMPRESSOR
HOT
NOTE:
Remove
Bridge
Between
3–4
THERM
FAN
NOTE:
Connect
Bridge
Between
2–X
THERMOSTAT
TERMINATION
COMPRESSOROR
L2
L2
W/FAN
DELAY
NOTE:
Remove
Bridge
Between
3–4
NOTE:
Remove
Bridge
Between
3–4
OR
TERMINATION
THERMO
L1
THERMOSTAT
DEFROST
OR
NoteACROSS
1
CONNECT
FAN
GAS
W/FAN DELAY TERMINATION
L1 NOTE:
THERMOSTAT
CONTACTOR COIL
SOLENOID VALVE
*See Note
1*See
Remove
Bridge
Between
3–4
FAN
THERMOSTAT
SOLENOID VALVE
L2
W/FAN DELAY
DTMV40
Time/Pressure–Compressor
Shutdown
NOTE:
Connect
Bridge
Between
2–X
HOT HOT
FAN
THERMOSTAT
SOLENOID
HEATER
OR
VALVE
W/FAN
DELAY
NOTE:
Connect
Bridge
Between
2–X
DEFROST
COMPRESSOR
OR
*See
Note
1
L2
DTMV40
Time/Pressure–Electric
Defrost
Wiring
Diagram
NOTE:
Remove
Bridge
Between
3–4
CONNECT
ACROSS
FAN
GAS
DTMV40
Time/Pressure–Compressor
Shutdown
W/FAN DELAY
DEFROST
CONTACTOR COIL
VALVE
CONNECT
ACROSS
FAN
GAS
DTMV40
Time/Pressure–Compressor
Shutdown
W/FAN DELAY
CONTACTOR COIL
NOTE:
Remove
Bridge
Between
3–4
DTMV40
Time/Pressure–Electric
Defrost
Wiring
Diagram
NOTE:
Connect
Bridge
Between
2–X
SOLENOID
HEATER
DEFROST
NOTE:
Remove
Bridge
Between
3–4
DTMV40
Time/Pressure–Electric
Defrost
Wiring
Diagram
THERMOSTAT
VALVE
ORDTMV40
T ime/Pressure–Electric
Defrost
Wiring3–4
Diagram
SOLENOID
HEATER
8243
Replacement
VALVE
NOTE:
Remove Bridge
Between
COMPRESSOR
VALVE
DTMV40
Time/Pressure–Compressor
Shutdown
8245 Replacement
*See
Note
1 COMPRESSOR
DTMV40
T ime/Pressure–Electric
Defrost
Wiring
Diagra
8243
Replacement
CONTACTOR
TERMINATION
VALVE
HEATER
DTMV40
T ime/Pressure–Electric
Defrost
Dia
DTMV40
Time/Pressure–Electric
DEFROST Bridge Between
8243
Replacement
*See
Note
1Reversed
THERMOSTAT
82458245
Replacement
OR NOTE:
2
DEFROST
L2
Connect
2–XWiring
THERMOSTAT
Replacement Defrost Wiring Diagram
OR
THERMOSTAT
8247
Pole
Switching
Mode
with
NOTE:
Connect
Between
2–X
CONTACTOR
TERMINAT
DTMV40
Time/Pressure–Compressor
Shutdown
HEATER Bridge
DTMV40
TReplacement–Double
ime/Pressure–Electric
Defrost
Wiring
Diagram
8243B
Replacement
Mode
A
with
Label
Applied
CONTACTOR
Shutdown
TERMINATION
8247
Replacement–Double
Pole
Switching
HEATER
Mode
BTrippers
with
Trippers
Reversed
DTMV40
Time/Pressure–Electric
Defrost
Wiring Diagram DTMV40
L2 Time/Pressure–Compressor
8247
Replacement–Double
Pole
Switching
8245
Replacement
Mode
B with
Trippers
Reversed
DTMV40
Time/Pressure–Electric
Defrost
Wiring
Diagram
THERMOS
L2 L2
L2 DTMV40
Mode
A8245
with
82458245
Label
Applied
L2
THERMOSTAT
Mode
A
with
Label
Applied
Time/Pressure–Compressor
Shutdown
Mode
B
withTBime/Pressure–Electric
8247
Label
Applied
DTMV40
Defrost
Wiring
Diag
8243
Replacement
DTMV40 Time/Pressure–Electric
Defrost
Wiring
Diagram
NOTE:
Remove
Bridge
Between
3–4
8247
Replacement–Double
Pole
Switching
Mode
B
with
Trippers
Reversed
DTMV40
T
ime/Pressure–Electric
Defrost
Wiring
Diagram
8243
Replacement
Mode
with
8247
Label
Applied
Replacement
Mode B
with 8247
Label Applied
Mode8245
A with
8245 Label Applied
L2 Remove
8245 Replacement
NOTE:
Bridge
Between
3–4
L2
TIMER 3–4Shutdown
DTMV40
T ime/Pressure–Electric
Defrost
Wiring
Diagram
8243
Replacement
DTMV40
Time/Pressure–Compressor
NOTE:
Remove
Bridge
Between
TIMER
Replacement–Double
Pole Switching
Remove
Bridge
Between
3–4 TIMER
Mode
B Time/Pressure–Compressor
with
Trippers
Reversed
Note
1DTMV40
8245 DTMV40
Replacement
Shutdown
Mode
B8247
with
8247
Label
Applied
DTMV40
Time/Pressure–Electric
Defrost
WiringDiagram
Diagram *See
RELEASE
TIMER
8247
Replacement–Double
Pole
Switching
Mode
BNOTE:
with
Trippers
Reversed
TIMER
NOTE:
Remove
Bridge
Between
Mode
with 8245
Label Applied
TIMERWiring
Defrost
RELEASE
NOTE:
Connect
Bridge
2–X
NOTE:
Remove
Bridge
Between
3–4 3–4
Mode A with
8245ATime/Pressure–Electric
Label
Applied
TIMER T
TIMER
RELAY RELEASE
RELEASEWiring
TIMER
RELEASE
8247
Replacement–Double
Pole Applied
Switching
Mode*See
B with
Trippers
DTMV40
TBetween
ime/Pressure–Electric
Defrost
*See
Note
1 Reversed
8243
Replacement
RELAY RELEASE
TIMER
TIMER RELAYRELAY
Note
1 Replacement
RELEASE
RELEASE
TIMER
Mode
B
with
8247
Label
Mode A with8245
Label Applied
DTMV40
T
ime/Pressure–Electric
Defrost
RELAYWiring
8243
8245Replacement
Replacement
RED
TIMER
Mode
B
with
8247
Label
Applied
TIMERRELAYRELAY
NOTE:
Connect
Bridge
Between
2–X
TIMERTIMER
RELEASE
TIMER
NOTE:
Connect
Bridge
Between
2–X
RELAYR
RELEASE
Mode
B
with
Label
Applied
8247
Replacement–Double
Pole
Switching
TIMER
ModeBBwith
withTrippers
Trippers
Reversed
RELAY
TIMER
RELEASE
TIMER
TIMER
8247
Replacement–Double
Pole
Switching
Mode
Reversed
Mode
A
with
8245
Label
Applied
RELAY
TIMER
TIMER
TIMER
RELEASE
RELAY
TIMER
TIME
TIMER
Mode A with 8245 Label
AppliedRELEASE
RELEASE
TIMER
TIMER
DTMV40
Time/Pressure–Compressor
Shutdown
RELAY
RELEASE
RELEA
TIMER
Mode
B
with
8247
Label
Applied
8243
TIMER
RELAY
RELEASE
TIMER
DTMV40 Time/Pressure–Electric Defrost
Wiring
Diagram
8245
RELEASEp
TIMER
RELAY
TIMERApplied
Mode B with 8247 Label
TIMER
Xp
8243 8243
2
RELAY
RELA
TIMER
RELEASE p
F
8245 8245
RELAY
RELEASE
Xp
LABEL Diagram
2
p8243
3DTMV40
Xp Shutdown
DTMV40
Shutdown
TIMER
DTMV40 T ime/Pressure–Electric Defrost Wiring Diagram
F8245
31-N Time/Pressure–Compressor
8243
Replacement
Defrost
pLABEL
F3DTMV40
Xp LABEL
RELAY
8247
2 4 4RELAY
pTIMER
3 1-N 1-N 24 TIMER
LABEL
DTMV40
Wiring
Diagram
F Time/Pressure–Compressor
Xp
TIMER
TIMER
31-N Time/Pressure–Electric
RELAY
Replacement
TIMER
pLABEL LABEL
F
RELEASE
XpWiring
pWiring
2 4Defrost
Xp
3 1-N 1-N 24 TIMER
4
824
F Time/Pressure–Electric
3ime/Pressure–Electric
4 2TIMER
2 3 2Pole
8245
N
1
LABEL
RELEASE
RELEASE
DTMV40
T ime/Pressure–Electric
Defrost
Wiring
D
p
8243
Replacement
Xp
2
p
3
Xp
RELAY
4
TIMER
DTMV40
T
Defrost
Diagra
LABEL
F
8243
Replacement
1-N
3
8247
Replacement–Double
Switching
4
RELEASE
Mode
B
with
Trippers
Reversed
N
p
p
1
LABE
TIMER
Xp
8245
Replacement
Xp
LABEL
2
3
RELAY
4
RELAY
TIMER
N 8247
TIMER
1 Replacement–Double
F A with
8245
Replacement
1-NLabel
Mode
8245
Applied4
8243
8247
L1
TIMER
8243
8245
p
XpLABEL
8245 RELAY
p
Pole
Switching
Xp
L1
THERMOSTAT
2
Mode
B with
Trippers
Reversed
3
4
LABEL
L1
3
p
F
4
2
1-N
Xp
N
1
LABEL
8247
Replacement–Double
Pole
Switching
2
p
Mode
B
with
Trippers
Reversed
3
4
Mode
B
with
8247
Label
Applied
L1
F
Xp
LABEL
1-N
8243
2
Mode
A
with
8245
Label
Applied
3
TIMER
4
p
L1
THERMOSTAT
F
1-N
Xp
LABEL8245
2 282454Label
Applied
8
THERMOSTAT
F F 3 L13 Mode
1-N 1-NA with
p
TIMER p
L1
Xp
2
8247
3
4
LABEL
F
1-N
PRESSURE
Xp
p
L1
LABEL
2 Label
N Mode
p TIMER
1 2 B 3with
Xp 4Applied
TIMER
4 MOTOR
FAN Xp
PRESSURE
Label
3 Mode
48247
NL1N L11 1
PRESSURE
L1
THERMOSTAT
COMPRESSOR
8243
TIMER
SWITCH
FAN FAN
8245
pLABEL8247 L
Xp
8243
OR
COMPRESSOR
pPRESSURE
3B with
PRESSURE
Xp
4 Applied
28247
SWITCH PRESSURE
2RELEASE
3 COMPRESSOR
RELEASE
4 TIMER
TIMERSWITCH
8245
LABEL L1
COMPRESSOR
FCOMPRESSOR
1-N
LINE L1
p
MOTOR
p
SOLENOID
RELAY 4
COMPRESSOR
RELEASE LABEL
TIMER 2
Xp
SOLENOID
VALVE
SWITCH
L1
OR
Xp
LABEL
2
3
3
PRESSURE
TIMER
4
LABEL
MOTOR
SWITCH
THERMOSTAT
F
DEFROST
F
1-N
1-N
LINE L1
OR
p
RELEASE
RELAY
TIMER
LINE
TIMER
L1
THERMOSTAT
SWITCH
Xp
LABEL
FAN
2
SOLENOID
3
PRESSURE
OR
SOLENOID
VALVE
VALVE
4
RELEASE
F
RELAY Xp TIMERp
LINE
1-N
COMPRESSOR
SOLENOID
RELEASE
L1
SOLENOID VALVE
LINE HEATER
RELAY
DEFROST
DEFROST
RELEASE
CONTACTOR
COIL OR
LINE DEFROST
N 11DEFROST
VALVE VALVE
L1
MOTOR
COMPRESSOR
L1
THERMOSTAT
OR
OR
RELAYSWITCH
RELEASE
pR
TIMER TIMER
OR
PRESSURE L1
RELAY
33 TIMER
22 PRESSURE
44 Xp
HEATER
N
CONTACTOR
COIL COIL
LINE
PRESSURE
RELAYSWITCH
SOLENOID OR
TIMER
FANTIMER
HEATER
SOLENOID
VALVE
PRESSURE
CONTACTOR
CONTACTOR
HEATERDEFROST
RELAY
DEFROST
FAN
OR
LINE
PRESSURE
L1
L1
COMPRESSOR OR COMPRESSOR
VALVECONTACTOR
PRESSURE SWITCH
MOTOR
HEATER
SWITCH
ORFAN
CONTACTOR
PRESSURE
L1
MOTOR
L1 HEATER
THERMOSTAT
COMPRESSOR COMPRESSOR
TIMER
HEATER
OR
PRESSURE SWITCH
CONTACTOR
COILTHERMOSTAT
LINE
PRESSURE
SWITCH
L2
TIMER
SWITCH
OR
SOLENOIDDEFROST
COMPRESSOR
SOLENOID
VALVE
8243
L1
LINE
SOLENOID
DEFROST
SWITCH
SOLENOID
VALVE
LINE
8245
L2
MOTOR
L2
p LABEL
OR
LINE L2 DEFROST
Xp
OR
CONTACTOR
L1 VALVE HEATER DEFROST
2 Between
SWITCH
4 1-N
F NOTE:
1-NCOMPRESSOR
OR
VALVE
PRESSUREL2
PRESSURESWITCHSWITCH
LINE 3L2
p FAN
SOLENOID
HEATER
L1
Xp
LABEL
VALVE
2SOLENOID
8243
COIL
4CONTACTOR
F
FAN
HEATER
OR
1-N CONTACTOR
DEFROST
PRESSURE
DEFROST
LINE 3L2
COIL
8243 PRESSURE
8245
8247
Remove
–2 1-N
OR
VALVE
8245PRESSURE
L21 CONTACTOR
2Between
L2
3 1-NBridge
SWITCH
SWITCH
LABEL
F LINE
1-N
p LABEL
Xp –2Xp p pLABEL
COMPRESSOR
MOTOR
Xp
COMPRESSOR
HEATER
2Between
3 Bridge
NOTE:
Remove
4 4–2
3SOLENOID
NOTE:
Remove
Bridge
Between
3–4
DEFROST
2
4Bridge
Xp p pLABEL
LABEL
F
NORL2
2COMPRESSOR
L2
PRESSURE
SWITCH
SWITCH
HEATER
4 MOTOR
NOTE:
Remove
Bridge
1-N
F LINE
OR
1-NCOIL2 SOLENOID
COMPRESSOR
PRESSURE
3 3CONTACTOR
OR
4OR
F HEATER
SOLENOID
VALVE Xp
1-N
SWITCH
NOTE:
Remove
Bridge
Between
3–4 3–4
L2CONTACTOR
DEFROST
824
LINE
*See
Note
2
NOTE:
Remove
Between
SOLENOID
CONTACTOR
HEATER
Xp p pLAB
L2
ORVALVE
VALVE
3
4
2
DEFROST
PRESSURE
N
1
LINE
NOTE:
Remove
Bridge
Between
1-N
–2
Xp SWITCH
L2
L1
SWITCH
3
*See*See
NoteNote
2 2
NOTE:
Connect
Bridge
Between
4–Xp
4
2
L2
N
1
OR
HEATER
VALVE
DEFROST
CONTACTOR
COIL
L2
L1
THERMOSTAT
OR
NOTE:
Remove
Bridge
Between
3–4
L2
HEATER
NOTE:
Connect
Bridge
Between
4–Xp
DEFROST
L2
CONTACTOR COIL
SWITCH 4–Xp
L2
OR
NOTE:
Connect
Bridge
Between
L1
CONTACTOR
L2
HEATER
NOTE:
Remove
Bridge
Between
1-N
–2
L1
*See
Note
2
L1
PRESSURE
THERMOSTAT
NOTE: Remove Bridge Between 1-N –2
CONTACTOR
HEATER
PRESSURE
L2
L1 L1
THERMOSTAT
PRESSURE
NOTE:
Remove
Bridge
Between
3–4
NOTE:
Connect
Bridge
Between
4–Xp
FAN
PRESSURE
NOTE:
Remove
Bridge
Between
3–4
L2COMPRESSOR
COMPRESSOR
NOTE: Remove
Bridge
Between 1-N –2
SWITCH
L1
SWITCH
*See
Note
2
L2
L2
MOTOR
PRESSURE
SWITCH
L1 NOTE:
OR
Remove
Bridge
Between
3–4
SWITCH
PRESSURE
FAN
L2
PRESSURE *See
LINE Note 2
L2
NOTE:
Connect
Bridge
Between
4–Xp
SOLENOID
SOLENOID VALVE
COMPRESSORFAN
PRESSURE
NOTE:
Connect
Bridge
Between
4–Xp
DEFROST
L2
LINE
COMPRESSOROR
*See Note 2LINE
NOTE: COMPRESSOR
Remove
Bridge Between 1-N –2
COMPRESSOR
SWITCH SWITCH
OR
VALVE
MOTORMOTOR
OR
NOTE:
Connect
Bridge
Between
4–Xp
SWITCH SWITCH
HEATER
SOLENOID
DEFROST
SOLENOID VALVE
NOTE:
Remove
Bridge
Between3–4
3–4
CONTACTOR
COIL SOLENOID
LINE NOTE: Remove Bridge Between 1-N –2
OR
SOLENOID
DEFROST
VALVE
NOTE:
Remove
Bridge
Between
LINE LINE DEFROST
OR
VALVE
*SeeNote
Note22
CONTACTOR
OR
VALVE
HEATER
HEATER
DEFROST Bridge
PRESSURE
CONTACTOR COIL
*See
OR NOTE:
HEATER
DEFROST
Connect
Between4–Xp
4–Xp
CONTACTOR COIL
OR
NOTE:
Connect
Bridge Between
CONTACTOR
L2
HEATER
CONTACTOR
HEATER
HEATER
L2 Remove Bridge Between 3–4
NOTE:
L2
SWITCH
PRESSURE
PRESSURE
SWITCH SWITCH
NOTE:
Remove
Bridge
Between
NOTE: Connect
Bridge
Between
4–Xp
NOTE:
Remove
Bridge
Between
3–4 3–4
NOTE:
Connect
Bridge
Between
NOTE:
Connect
Bridge
Between
4–Xp4–Xp
WIRING LEGENDS
Precision
GRASSLIN
Paragon
Model
Model
Model
TIME INITIATED, TIME TERMINATED
8045
6045
DTMV40
DTMV40
8046
S1 Mode
Selector
Terminal
Ident.
Label
Typical
Wiring
Diagram
A
A
None
None
1
F
2
3
4
N 1
3
F
3
8041
6041
DTMV40
A
8041
8043
6043
DTMV40
B
8043
8047
6047
DTMV40
B
8047
TIME INITIATED, REMOTE TEMPERATURE OR PRESSURE TERMINATED
8145
6145
DTMV40
A
None
8141
6141
DTMV40
A
8141
8143
6143
DTMV40
B
8143
5, 6
7
8, 9
6243
DTMV40
B
8243
8247
6247
DTMV40
B
8247
4 X
NO
CONNECTION
2
4 X
NO
CONNECTION
1
4
2 N
NO
CONNECTION
N 1
3
4
2
NO
CONNECTION
F
3
1
2
4 N X
N 1
3
2
4 X
1 N 3
4
2 X
3 1-N 2
2
See Note 1
TIME INITIATED, PRESSURE TERMINATED
(Separate Pressure Switch Required - see instructions)
8245
6245
DTMV40
A
8245
8243
Terminal Layout
(see note below)
10
F
3 1-N 2
4 Xp p
11
F
3 1-N 2
4 Xp p
See Note 2
12
N 1 3
2
4 Xp p
NOTE: In “Terminal Layout,” the connecting lines between terminals indicate the correct positions of the bridges for each model. The heavy line
indicates the bridge must be installed as shown. The light line
indicates the bridge may be removed if different voltages are used
at each switch.
APPLICATION
though the defrost programmed termination time has
not been reached. The time termination functions as a
fail-safe and will terminate the defrost if the temperature or pressure switch fails to do so. The temperature
or pressure switch on the refrigeration coil has contacts which close on a temperature or pressure rise
above freezing, indicating that frost and ice have melted from the coil. Typically a wide differential SPDT
temperature switch is used with it’s normally closed
contacts wired to the fans thereby delaying the fans
from coming on until the coil temperature has dropped
back to below freezing. In most applications, the contacts at terminals 2 and 4 are normally closed (when
timer is energized) and control the fans and refrigeration equipment or compressor. For hot gas defrost, or
for double pole switching, contacts 2 and 4 may be
configured as normally open by selecting mode “B.”
Refer to wiring diagrams 1 thru 12 for additional detail.
The DTMV40 Defrost Timer is equivalent in function, terminal identification, and wiring to the Paragon 8140 and
Precision 6140 series Defrost Timers. The DTMV40 may
also be used to replace Paragon 8040 and Precision
6040 series time terminated defrost timers. With the
addition of a remote pressure switch, the DTMV40 can
replace the Paragon 8240 series and Precision 6240
series pressure terminated defrost timers.Defrosts will
be initiated by programming the timer, which will accept
from 1 to over 24 defrost initiation settings per day at 15
minute intervals (8:00AM, 8:15AM, 8:30AM, etc.) Defrost
duration is settable in 15 minute intervals from a minimum of 15 minutes up to several hours (15 minutes, 30
minutes, 45 minutes, 1 hour, 1 hour-15 minutes, etc.)
The defrost duration determines the termination time.
In standard configuration, the contacts between terminals 1 and 3 are normally open and close during a
defrost to energize defrost heaters; the contacts
between terminals 2 and 4 are normally closed (when
timer is energized) and open during a defrost to deenergize refrigeration and fans.
“F” Terminal:
The DTMV40 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.”
DTMV40 Time Initiated, Remote Temperature,
Pressure or Time Terminated:
Used in electric or hot gas defrost applications where
the defrost is terminated when the coil is frost free, as
sensed by a temperature or pressure switch, even
Note: The DTMV40 is configured by default (out of the
box) to replicate the 8145 wiring. For replacement of
other models refer to page 3.
4
REPLACING EXISTING DEFROST TIMERS
IMPORTANT:
When replacing a Grasslin DT-040 model with a DTMV40,
the power connections must be made to terminals N and
1 on the DTMV40. No connection must be made to the X
terminal or damage to the unit will result. Disconnect the
power wire from terminal X on the DT-040 and connect
it to terminal N on the DTMV40. Disconnect the other
power wire from terminal N on the DT-040 and connect it
to terminal 1 on the DTMV40. All other wires should be
connected to the DTMV40 the same as on the DT-040.
The DTMV40 will replace all models of Paragon 8040,
8140, 8240 Series or Precision 6040, 6140, 6240
Series.
TERMINAL IDENTIFICATION:
The standard DTMV40 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 on page 4, select the
proper label, apply to printed circuit board, and wire per
the original wiring or the wiring diagrams indicated.
MODE SELECTION (Light Blue DIP Switch):
First determine what model is being replaced (Grasslin or
Competitors). The mode selector DIP switch (located at
lower right side of the board) determines the configuration of terminals 2&4. In position “A”, the terminals are
normally closed (only when the timer is energized), and
will open during a defrost. In position “B”, terminals 2&4
are normally open, and will close during a defrost. Select
proper position from table below and wiring diagrams
indicated. To select mode simply slide the switch as follows:
Mode A – position switch to left; Mode B – position
switch to right
the DTMV40 must be configured for 120V application
(RED DIP Switch Down) with 120V power connected to 1N and X, and the bridge jumper between 1-N and 2
must be removed.
Note 1 – (8143 Replacement): When replacing a
Paragon 8143 or Precision 6143, wire the termination thermostat to terminal N of the DTMV40 and
the adjacent blank terminal. The Paragon and
Precision timers are wired to terminal N and the
blank terminal. If the termination thermostat is
wired to terminal N of the DTMV40 (with the 8143
label attached), temperature termination will not
occur and may result in burnout of the DTMV40.
See wiring diagrams 8 & 9.
8240/6240 SERIES REPLACEMENT: The DTMV40 may
be used to replace the Paragon 8240 or Precision 6240
series defrost timers with integral pressure termination
by the addition of a remote pressure switch wired to terminals Xp and p of the DTMV40 (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 or
Precision defrost timer being replaced. Set cut-out 6 to
14psi below cut-in. See wiring diagrams 10, 11, and 12.
Recommended Pressure Switches: Johnson/Penn P170,
Ranco 010 series, or Danfoss KP1 series. Pressure
range approximately 35-110psi, CUT-IN ON PRESSURE
RISE.
NOTE 2 – (8243 Replacement): When replacing a
Paragon 8243 or Precision 6243, the DTMV40
white tabs (trippers) for setting defrost time and
defrost duration must be reversed. Pull ALL tabs
outward for refrigeration. Press the tabs inward at
the desired defrost initiation times, and for desired
duration.
Please Note: The DTMV40 replaces all prior Grasslin
defrost timer models such as DT040, DT140, DTMV, and
DTSX.
Note: When Mode “B” is selected the
DTMV40 will operate as follows:
Refrigeration Mode – RED &
GREEN LED’s will turn OFF (1&3
and 2&4 break while 1&F make)
SPECIFICATIONS
Defrost Mode – RED & GREEN
LED’s will turn ON (1&3 and 2&4
make while 1&F break)
8045 REPLACEMENT:
The DTMV40 with 8045 terminal ID label applied differs
from the 8045 in that terminals 1 and N are combined.
This means that the DTMV40 model must be the same
voltage as the defrost circuit (defrost heater, contactor
coil, or hot gas valve). If used in an application where the
defrost circuit is 120V and the refrigeration circuit is 240V,
5
Switch Rating:
40A Resistive @ 120VAC, 208~240VAC
2HP @ 208~240VAC; 1HP @ 120VAC
16FLA, 90LRA @ 120VAC
12FLA, 52LRA @ 240VAC
“F” Terminal: 30A Resistive @ 120~240VAC
1HP @ 120VAC; 2HP @ 208~240VAC
Wiring Connections: Screw box lug terminals.
Environmental Ratings:
Operating Temperature Range: –40°F to 131°F (–40°C to 55°C)
Operating Humidity: 0 to 95% non-condensing
Dimensions: 8.795” x 6.631” x 2.935” (H x W x D)
Shipping Weight: 2 lbs.
DTMV40 INSTALLATION
INTO EXISTING ENCLOSURE
SETUP PROCEDURE
1. Disconnect power.
2. Disconnect wiring from
existing defrost timer.
3. Remove Paragon mechanism from enclosure.
4. Remove Grasslin DTMV40
printed circuit board from
it’s enclosure (gray plastic).
5. If necessary, adjust DIP
switches and apply terminal identification label as
indicated in the DTMV40
operating instructions.
6. Engage tabs on left side of
printed circuit board into
enclosure, and swing PCB
into place.
7. Apply extra DTMV40 label
to existing enclosure door.
8. Reconnect wires to
DTMV40.
9. Attach gray faceplate over
PCB and secure using
existing enclosure locking
latch as illustrated.
10. Reapply power.
DTMV40 Installation into Old Paragon Enclosure/Bracket
***Note: Grasslin Recommends replacing Old Paragon Enclosure/Bracket
entirely with the DTMV40 NEMA3R Enclosure or DTMV40-B Bracket Mount ***
SETUP PROCEDURE
1.
Disconnect power (turn breaker OFF).
2.
Disconnect wiring from existing Paragon timer.
3.
Remove and save the 6-32 screw. Remove and discard two metal posts retaining Paragon mechanism.
4.
Remove Paragon mechanism from enclosure.
5.
Remove Grasslin DTMV40 mechanism from it’s enclosure (if applicable) and with pliers break off the 3 tabs
on left side of printed circuit board.
6.
Remove contents of plastic hardware bag.
7.
Refer to DTMV40 operating instructions for procedures on setting voltage and mode DIP switches.
8.
Refer to installation diagram below. CAUTION: If the DTMV40 mechanism is not assembled to the old
Paragon enclosure/bracket exactly as shown below, a short circuit may occur which will destroy
the DTMV40 defrost timer.
9.
Reconnect wires, tighten terminal screws securely. Reapply power (turn breaker ON).
10.
Follow the programming/setup procedure (refer to DTMV40 operating instructions).
Old Paragon Enclosure
Existing Paragon
#6-32 Screw
#6-32 x ¼” Screw
3/8” Nylon
Standoffs
#6-32 x ¾” Threaded Standoff
#6-32 Nylon Posts
Paragon Bracket
3/8” Nylon Standoffs From Bag