DTAV40 Series
Defrost Timer
Project:
Location:
DTAV40 Series
Product Type:
Auto-Voltage Defrost Timer
The Grässlin DTAV40 Series Auto Voltage Defrost Timer is applicable
to air defrost (compressor shutdown) and electric or hot gas defrost
systems where the 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.
Contact/Phone:
Model #:
Features
• DTAV40 replaces over 40 competitive models
• Auto-Voltage automatically adjusts for 120-240 VAC
• Mounts in existing enclosures, no tools required
• Box lug terminals
• Defrost times programmable in 15-minute intervals with
captive trippers
• UL Type 3R outdoor enclosure (DTAV40IM - UL Type 1 Metallic)
• 40 Amp, 2 HP Rating
• 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
DTAV40 Inside
Ratings
Input Voltage: Auto-Voltage 120-240 VAC, 60 Hz
"Q" Models 50/60 Hz
Electrical Ratings:
40 Amp Resistive, 120-240 VAC
1 HP, 120 VAC
2 HP, 240 VAC
Operating Tempearature:
-40º F to 104º F (-40ºC to 40ºC)
Quartz:
-4º F to 104º F (-20ºC to 40ºC)
Operating Humidity:
0-95% RH, non-condensing
Enclosure: UL Type 1 or UL Type 3R
Min ON/OFF:
15 minutes
Max ON/OFF:
23 hours, 45 minutes
Electrical Life:
50,000 Operations at full load
Wire Size:
AWG #8
Shipping Weight:
3 lbs.
Warranty:
Limited 1 year
DTAV40
HVACR
#E10694
Energy Controls
DTAV40 Series
Model Number
Input Voltage
Enclosure
Carryover
DTAV40
120-240 VAC, 60 Hz
UL Type 3R
Raintight plastic
No
DTAV40IM
120-240 VAC, 60 Hz
UL Type 1
Metallic not raintight
No
DTAV40M
120-240 VAC, 60 Hz
None, Mechanism only
No
DTAV40Q
120-240 VAC, 50/q60 Hz
UL Type 3R
Raintight plastic
Yes (7 Days)
None, Bracket Mount
No
DT-B
Specification
Furnish and install a Grässlin___________defrost control, which will automatically adjust between 120 VAC and 240 VAC
operation and shall have defrost initiation times settable in 15-minute intervals with captive trippers. The defrost timer
shall be housed in a UL Type 3R indoor/outdoor plastic enclosure or UL Type 1 metallic enclosure. The relay output will
be rated for 40A Resistive, 2 HP @ 240 VAC. Defrost termination to be by time (or by a remote temperature or pressure
switch). For carryover, the time controls shall have quartz drive with 7-Day reserve carryover from a rechargeable battery.
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
N
3
4
2
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
THERMOSTAT
LINE
DEFROST
HEATER
COMPRESSOR
OR
SOLENOID VALVE
OR
CONTACTOR COIL
4
X
TERMINATE
INPUT
CONTROL TERMINATE
POWER
INPUT
8045
LABEL
F
3
1
L1
FAN
MOTOR
4
N
X
THERMOSTAT
DEFROST
HEATER
LINE
L2
2
TERMINATION
THERMOSTAT
W/FAN DELAY
FAN
MOTOR
COMPRESSOR
OR
SOLENOID VALVE
OR
CONTACTOR COIL
L2
8141 Replacement
Mode A with 8141 Terminal Block Label Applied
CONTROL
POWER
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