DTAV40VM Series
Defrost Timer
Project:
DTAV40VM Series
Location:
Auto-Voltage Defrost Timer with Voltage
Monitoring and Short Cycle
Product Type:
The Grässlin DTAV40VM Series Auto Voltage Defrost Timer with
Voltage monitoring is applicable to air defrost (compressor shutdown)
and electric or hot gas defrost systems where defrost is terminated
by the timer. If the coil is frost free, the timers can also be terminated
by temperature or pressure switches before the programmed defrost
termination time has been reached. The time termination functions as
a fail-safe and terminates the defrost cycle if the temperature or
pressure switch fails to do so. With built in voltage monitoring and
short cycle delay options the DTAV40VM further increases system life
by protecting the compressor.
Model #:
Contact/Phone:
Features
• Voltage monitoring protects against low voltage conditions
(Brown outs)
• DTAV40VM replaces over 40 competitive models
• Adjustable short cycle delay helps extend compressor life
• Auto-Voltage adjusts for 120-240 VAC
• Mounts in existing enclosures, no tools required
• Captive trippers cannot be lost
• UL Type 3R outdoor enclosure
• Moisture resistant conformal coated board
• LED indicators for defrost and refrigeration cycles
• Defrost cycles are programmed independently
• "Real-time" clock face for quick, easy and accurate setting
• Min ON/OFF time: 15 minutes
• Max ON/OFF time: 23 hours, 45 minutes
DTAV40VM Inside
Ratings
Input Voltage: Auto-Voltage 120-240 VAC, 60 Hz
Electrical Ratings: 40 Amp Resistive, 120-240 VAC
1 HP, 120 VAC
2 HP, 240 VAC
Operating Temperature:
-40º F to 104º F (-40ºC to 40ºC)
Operating Humidity:
0-95% RH, non-condensing
Enclosure: UL Type 3R
Min ON/OFF: 15 minutes
Max ON/OFF:
23 hours, 45 minutes
Short cycle Delay:0, 6 second, 30 second, 1, 2, 4, 6, 8,
10 minute
Voltage Protection:< 95 VAC for 120 VAC &
<190 VAC for 240 VAC (+/- 2 VAC)
Electrical Life:
50,000 Operations at full load
Wire Size: AWG #8
Shipping Weight: 1.95 lbs.
Warranty:
Limited 1 year
DTAV40VM
HVACR
#E10694
Energy Controls
DTAV40 Series
Model Number
Voltage
Enclosure
Timing
DTAV40VM
120-240 VAC
UL Type 3R
Raintight plastic
24-Hour, 15-minute Intervals
Specification
Furnish and install a Grässlin___________defrost control, which will automatically adjusts between 120 VAC and 240 VAC
operation. The defrost timer shall have defrost initiation times settable in 15-minute intervals with captive trippers. The
defrost timer shall incorporate voltage monitoring to protect against low voltage conditions. The defrost timer shall also
incorporate a short cycle delay adjustable from 0sec (off), 6sec. minimum to 10min. max to prevent rapid compressor
cycling. The defrost timer shall be housed in a UL Type 3R indoor/outdoor plastic enclosure. The relay output shall be
rated for 40A Resistive, 2 HP @ 240 VAC. Defrost termination to be by time (or by a remote temperature or pressure
switch).
Diagrams
Energy Controls
6.61"
[16.79 cm]
5.73"
[14.55 cm]
8143 Replacement
CONTROL
POWER
TERMINATE
INPUT
8.88"
[22.56 cm]
1
3
N
2
4
X
8143
LABEL
L1
LINE FAN
HOT
GAS
VALVE
TERMINATION
THERMOSTAT
W/FAN DELAY
CONNECT ACROSS
COMPRESSOR
THERMOSTAT
L2
3"
[7.62 cm]
8145 Replacement
Mode A - No Label Required
8045 Replacement
CONTROL
POWER
F
3
1-N
L1
2
4
THERMOSTAT
DEFROST
HEATER
LINE
COMPRESSOR
OR
SOLENOID VALVE
OR
CONTACTOR COIL
TERMINATE
INPUT
X
CONTROL TERMINATE
POWER
INPUT
8045
LABEL
F
2
4
N
X
THERMOSTAT
DEFROST
HEATER
LINE
TERMINATION
THERMOSTAT
W/FAN DELAY
FAN
MOTOR
COMPRESSOR
OR
SOLENOID VALVE
OR
CONTACTOR COIL
L2
8041 Replacement
N
1
3
L1
2
LINE
DEFROST
HEATER
8141 Replacement
Mode A with 8141 Terminal Block Label Applied
CONTROL TERMINATE
POWER
INPUT
4
THERMOSTAT
L2
1
L1
FAN
MOTOR
L2
FAN
3
COMPRESSOR
OR
SOLENOID VALVE
OR
CONTACTOR COIL
X
CONTROL
POWER
8041
LABEL
N
1
3
2
4
X
TERMINATE
INPUT
8141
LABEL
THERMOSTAT
L1
FAN
LINE
L2
www.intermatic.com
DEFROST
HEATER
COMPRESSOR
OR
SOLENOID VALVE
OR
CONTACTOR COIL
TERMINATION
THERMOSTAT
W/FAN DELAY