ASE DS-4C User manual

LIMITED WARRANTY
The DS-4C is warranted against defects in workmanship and materials for two years from date of sale.
This warranty does not apply to damage resulting from accident, misuse, or alteration nor where connected
voltage is more than 5 above the configured operating voltage, nor to equipment improperly installed or
wired or maintained in violation of this Owner’s Manual. No other written or oral warranty applies. No
employee, agent, dealer or other person is authorized to give any warranties on behalf of ASE.
Units returned for warranty repair cannot be modified from shipped condition and leads must
protrude a minimum of 6 inches from the base conduit hub. Repair costs of a modified unit will be
quoted as the unit must be returned to the original, unmodified condition prior to return shipping. The
customer shall be responsible for all costs incurred in the removal and/or reinstallation and shipping of the
product for repairs. Within the limitations of this warranty, inoperative units should be returned, freight
prepaid, to ASE, and we will repair or replace, at our option, at no charge to you with return freight paid by
ASE to destinations within the U.S. and Canada. It is agreed that such repair or replacement is the
exclusive remedy available from ASE and that ASE IS NOT RESPONSIBLE FOR DAMAGES OF ANY
KIND, INCLUDING INCIDENTAL AND CONSEQUENTIAL DAMAGE. Some states do not allow the
exclusion or limitation of incidental or consequential damages so the above exclusion may not apply to
you. The warranty gives you specific legal rights, and you may also have other rights which vary from state
to state.
Input: 100-277 VAC +/- 5 , 47-63 Hz
Control: 2 x 277 VAC @ 30A
Operating Temp: -40°C to +85°C
AUTOMATED SYSTEMS ENGINEERING, INC.
2519 E SAINT VRAIN ST
COLORADO SPRINGS, COLORADO 80909
PHONE: [phone] FAX: [phone]
Visit us on the Internet at: www.goase.com
CM
US
C
Intertek
T
E
D
S
I
L
CAUTIO : Read all instructions carefully before installation.
Save this Installation Manual for future reference.
DS-4C
RAIN/SNOW SENSOR CONTROLLER
I STALLATIO MA UAL
2 x 30 A 277V AC, 20 A 28V DC
AVERTISSEMENT: IL PEUT Y AVOIR UN CIRCUIT SECONDAIRE SOUS TENSION
CERTIFIED TO CAN/CSA STD C22.2 NO. 14
CONFORMS TO UL STD 508
100−277V AC 0.15 A 50/60 z
ENCLOSURE TYPE 3R
RAIN/SNOW SENSOR CONTROLLER
WARNING: T IS UNIT MAY BE SUPPLIED BY MORE T AN ONE BREAKER
CONTROL
INPUT
USC
Intertek
3175102
T
S
L
I
E
D
ACTIVATED
ENGINEERING
DANGER
DS−4C
AUTOMATED
SYSTEMS
INDICATOR
POWER
OFF
CM
Manufactured By
AUTOMATED
SYSTEMS
ENGINEERING
2519 East Saint Vrain St Colorado Springs, Colorado 80909

Selecting a Mounting Location for the DS-4C
The interleaved grid on the top of the DS-4C is the precipitation or “moisture" sensor. The brass cylinder
protruding from the bottom of the enclosure is the temperature sensor. For reliable rain and snow detection
the unit must be mounted in a location that exposes the moisture sensor to a clear view of the sky. The unit
should not be mounted directly under eaves or overhangs. It should not be mounted so close to the ground
that it may become buried in snow. For proper temperature detection the DS-4C must be mounted
outdoors, away from sources of heat. Operating temperature range is -40°C to +85°C. Note that, when
powered, the DS-4C moisture grid will always remain hot. This is normal. This allows the sensor to
continuously melt snow and evaporate both rain and snow from the grid. The DS-4C can be mounted by
screwing the base conduit hub onto an appropriate size free-standing conduit or by using the mounting
holes in each corner of the enclosure.
DO OT DRILL HOLES THROUGH THE E CLOSURE FOR MOU TI G!
e Font Pas Les Trous De Foret Par La Boîte Pour Le Support!
This can allow water into the enclosure causing a potential shock hazard. It is recommended that a
weatherproof junction box be mounted below the DS-4C for termination of the power and load pigtails to
the equipment/building wiring.
Use Care When Replacing the Front Cover. Do ot Pinch the Gasket or Overtighten the Screws.
0
F
E
D
C
B
A
9
8
7
6
5
4
3
2
1
TEMPERATURE ADJUST
DELAY OFF ADJUST
SENSITIVITY ADJUST
LOAD1 LOAD2 INPUT POWER
PROFILE SELECT
MONITOR JACK
GRID JACK
CONTROL JACK
ALWAYS FOLLOW LOCAL AND NATIONAL ELECTRICAL CODES
Toujours Suivre Les Codes Électriques Locaux Et Nationaux
2
BROWN
BLUE
LOAD CENTER
CB
RED
YELLOW
240VAC LOAD
CB
240VAC LOAD
DS−4C
POWER SUPPLY
240VAC In, Dual 240VAC Load, Heat Panels or Similar
DO OT ATTEMPT TO I CREASE SWITCHI G CAPACITY BY WIRI G THE RELAYS I PARALLEL
e Pas Tenter D'Augmenter La Capacité De Commutation Par Le Câblage Des Relais En Parallèle
DO OT USE THE DS-4C E CLOSURE AS A JU CTIO BOX
e Pas Employer Une DS-4C As Une Boîte De Jonction
Moisture Grid Maintenance & Replacement
It is recommended that the DS-4C be powered down and the grid wiped clean with clear water at least
once every 4 months. Heavy deposits may be removed using a non-metallic scouring pad (Scotch-BriteTM
or equivalent.) However, after a number of years, the corrosive elements left behind when water is
evaporated out of the moisture grid will eventually damage the grid rings. The moisture grid can be easily
replaced by ordering and installing an MG-5 “Moisture Grid Assembly” and following the procedure below:
THIS PROCEDURE SHOULD O LY BE PERFORMED BY QUALIFIED PERSO EL!
CE PROCÉDÉ DEVRAIT SEULEME T ÊTRE EXÉCUTÉ PAR LE PERSO EL QUALIFIÉ!
Open all power and load breakers connected to the DS-4C. Open the front cover and remove the cable
connector from the Grid Jack. Unscrew and remove the old moisture grid. Pass the new moisture grid
connector through the top hole and screw the assembly into the reducing bushing. Tighten the grid hand
tight plus ¼ turn. Connect the new cable to the Grid Jack. Confirm that the four connector pins are
properly aligned with the jack. Close the front cover, confirming that the front cover gasket is properly
sealed. Reapply power.
7
General Safety Instructions
1. THIS U IT SHOULD BE I STALLED, OPE ED, A D REPAIRED BY QUALIFIED PERSO EL
O LY!
CETTE U ITÉ DEVRAIT ÊTRE I STALLÉE, OUVERTE, ET RÉPARÉE PAR LE PERSO EL
QUALIFIÉ SEULEME T!
2. To avoid shock hazard do not open the front cover with power connected to the DS-4C or any
controlled equipment.
Pour éviter la décharge électrique déconnectez toute la puissance avant d'ouvrir la couverture du DS-
4C.

External Control/Monitor Operation
The DS-4C provides external control and monitor
capability. Order the optional CS-3 “Control Cable” and
CS-4 “Monitor Cable” to access these points. External
Control allows the user to externally activate (Manual On)
or disable and clear the delay (Standby/Reset) for the DS-
4C relays. Connecting the White lead to a control lead will
activate the function listed in the Profile Table. This can be
achieved using a switch or dry contact. A “Standby/Reset”
function will always override a companion “Manual On”
function.
The external monitor points provide low power dry contact
closures that mimic the operation of the load relays. These
relays, rated at 24 VAC/VDC @ 400 mA, 10W maximum,
will close with their respective load relays and can be used
to externally monitor activation of the sensor.
Typical Load Wiring
The main relays are dry contacts and do not supply power directly to your load
The Yellow load leads and Red load leads connect to main relays 1 & 2 respectively. Both relays in the
DS-4C activate according to the selected profile. These relays act as normally open switches and are fully
isolated from each other. Each relay is intended to switch a separate circuit. Switching capacity of the DS-
4C is 30A per circuit, 2 separate circuits. While not as convenient as directly supplying power for the load,
dry contacts allow you to operate the DS-4C from one voltage while controlling loads of a different voltage
without adding an external relay or contactor. For example, the DS-4C can be powered from 120VAC but
can directly control a 240VAC heater and a 120VAC feed blower or two separate 277VAC heat cables.
The following diagrams show some possible wiring schemes for connecting the DS-4C to your load. Your
load may be a direct connection to heat cable, a heater, a contactor coil, or a control voltage. For clarity
the green safety GROU D leads are not shown.
NEUTRAL BUS BAR
CB
BROWN
BLUE
LOAD CENTER RED
YELLOW
BLOWER
CB
POWER SUPPLY
DS−4C
HEATER
120VAC In, 120VAC Deice Heater/Rain Blower for VSAT or Similar
6
Power & Activation Indicator
A green lamp shines through a lens on the cover of the DS-4C to indicate operational status. If this lamp is
OFF the DS-4C is not receiving power. If this lamp is steady O the DS-4C is powered but not triggered.
If this lamp blinks once Relay 1 is closed. If it blinks twice Relay 2 is closed. If it blinks three times both
Relay 1 and Relay 2 are closed. Note that, even though snow or rain may have stopped, the DS-4C
indicator will continue to flash during the Delay-Off drying cycle.
Setting the Configuration Switches and Adjustments
The following paragraphs and table outline the operating modes for the DS-4C and
explain the functions of the adjustments. Trigger temp (TT) is adjustable from
34°F-44°F (1°C-6°C) using the TRIG TEMP control. When ambient air
temperature (AT) is below this setting precipitation is assumed to be snow. When
above this setting, precipitation is assumed to be rain.
The DEL configuration switch activates the Delay-Off drying cycle timer on the DS-
4C. The timer allows the DS-4C to continue to operate and dry the heated surface through evaporation
once precipitation has stopped. The drying cycle reduces the chance of
moisture left behind refreezing into ice. This timer is restarted by each
sensor trigger. Therefore, the DS-4C will continue to operate as long as it is
triggered, then for the Delay-Off period once the trigger clears. The range of
the Delay-Off adjustment is defined in the Profile Table. The adjustment will
have no function if Delay-Off time is shown in the profile as a fixed value.
The DS-4C precipitation sensor is very sensitive and can detect a single snow flake or rain drop. However,
if the DS-4C is mounted in an area susceptible to high winds, overhanging trees, or blowing ground snow,
nuisance triggering may occur. While proper placement is the best remedy,
the SENSITIVITY control can also be used to reduce nuisance triggering.
An internal timer checks the precipitation sensor for moisture and compares
cleared time with triggered time. The highest sensitivity setting (toward
MORE) triggers on first detection. As the control is adjusted clockwise
precipitation must be detected for a longer period to be considered valid.
The lowest sensitivity setting (toward LESS) requires 120 seconds of detection before the unit triggers. If a
trace amount of snow blows onto the grid from a drift or overhang it will likely be melted and evaporated in
less than a minute. Similarly, a very light snowfall may also clear quickly from the grid. If these conditions
should be ignored by the sensor the SENSITIVITY control can be adjusted as required. However, to
prevent non-triggering during a true event, it is recommended that the user start at highest sensitivity
(MORE), then adjust while monitoring operation over time.
Fine Adjustment for Efficient Operation
The DS-4C is shipped with the TRIG TEMP and DELAY OFF adjustments in the center position,
representing 39°F (3.9°C) and mid point of Delay-Off time respectively. It is also set for highest
SENSITIVITY. Depending on local conditions the user may find that fine adjustment of the controls may
provide more satisfactory operation. If the sensor does not trigger during very wet snows the trigger
temperature may need to be adjusted higher. Constant triggers from snow falling from trees or overhangs
may be reduced by adjusting SENSITIVITY. The Delay-Off time can also be adjusted to provide clean
melt-off without excessive running time. Fine adjustment can both save operating expense and provide
more reliable operation. However, to keep reliability high, always make adjustments in small increments.
3
External Control
Pin CS-3 Function
1 Green See Profile Table
2 Black See Profile Table
3 Orange See Profile Table
4 Red See Profile Table
5 White GND/Common
External Monitor
Pin CS-4 Function
1 Black Relay 1 Monitor
2 Red Relay 1 Monitor
3 Green Relay 2 Monitor
4 White Relay 2 Monitor

Profile Selection
The DS-4C was designed to be as adaptable as possible to different operating requirements. The mode of
operation, called the “profile”, can be selected by setting the Profile Select switch. A profile is selected by
aligning the arrow on the screwdriver slot of the switch with the appropriate number or letter. The following
table lists the operating characteristics of each profile. A CHA GE I PROFILE WILL OT TAKE
EFFECT U TIL THE DS-4C HAS HAD POWER REMOVED, THE REAPPLIED. All profiles observe the
34°F to 44°F adjustable trigger temperature. Deice functions occur when temperatures are below or equal
to the trigger temperature and precipitation is detected. Rain functions occur when temperatures are above
the trigger temperature and precipitation is detected. Profiles noted as “Low Temp Cutoff” do not initially
trigger below 15°F but will retrigger if triggered above 15°F but temperature then drops below 15°F.
“Delay-Off” is the minimum time the relay will remain closed after a detection. All delays are restarted by a
detection during the Delay-Off period. Functions for the external control leads for each profile are listed.
Profile 0 Low Temp/Precipitation Sensor with Low Temp Cutoff
Profile 1 Low Temp/Precipitation Sensor without Low Temp Cutoff
Relay Function Delay-Off Black Low Temp Manual On
Relay 1 Low Temp 20 sec Green Low Temp Standby/Reset
Relay 2 Precip 20 sec Red Precip Manual On
Orange Precip Standby/Reset
Profile 2 Deice/Rain Diversion Sensor with Low Temp Cutoff
Profile 3 Deice/Rain Diversion Sensor without Low Temp Cutoff
Relay Function Delay-Off Black Deice Manual On
Relay 1 Deice 20 sec Green Deice Standby/Reset
Relay 2 Rain 20 sec Red Rain Manual On
Orange Rain Standby/Reset
Profile 4 Deice/Rain Diversion Controller with Low Temp Cutoff
Profile 5 Deice/Rain Diversion Controller without Low Temp Cutoff
Relay Function Delay-Off Black Deice Manual On
Relay 1 Deice 30-93 min Green Deice Standby/Reset
Relay 2 Rain 2 min Red Rain Manual On
Orange Rain Standby/Reset
Profile 6 Dual Deice Controller with Low Temp Cutoff
Profile 7 Dual Deice Controller without Low Temp Cutoff
Relay Function Delay-Off Black Deice Manual On
Relay 1 & 2 Deice 30-93 min Green Deice Standby/Reset
Red Not Used
Orange Not Used
Profile 8 DS-9B Replacement with Delay, without Rain Diversion, and 2 Minute Cooldown
Relay Function Delay-Off Black Deice Manual On
Relay 1 Deice 30-93 min Green Deice Standby/Reset
Relay 2 Deice Relay 1 + 2 min Red Not Used
Orange Not Used
4
Profile 9 DS-9B Replacement with Delay On, Rain Diversion and 2 Minute Cooldown
Relay Function Delay-Off Black Deice Manual On
Relay 1 Deice 30-93 min Green Deice Standby/Reset
Relay 2 Deice Relay 1 + 2 min Red Rain Manual On
Relay 2 Rain 2 min Orange Rain Standby/Reset
Profile A Dual Deice Controller with 4°F Supercold Trigger
Relay Function Delay-Off Black Deice Manual On
Relay 1 & 2 Deice/Supercold 30-93 min Green Deice Standby/Reset
Red Not Used
Orange Not Used
Profile B DS-9B/DDC-400 Sensor Replacement
Relay Function Delay-Off Black Deice Manual On
Relay 1 Deice 20 sec Green Deice Standby/Reset
Relay 2 Deice Relay 1 + 2 min Red Rain Manual On
Relay 2 Rain 2 min Orange Rain Standby/Reset
Profile C Deice/Rain Div Controller with Delay On, Rain Diversion and 30 Minute Cooldown
Relay Function Delay-Off Black Deice Manual On
Relay 1 Deice 30-93 min Green Deice Standby/Reset
Relay 2 Deice Relay 1 + 30 min Red Rain Manual On
Relay 2 Rain 30 min Orange Rain Standby/Reset
Profile D Not Assigned
Relay Function Delay-Off Black
Relay 1 Green
Relay 2 Red
Orange
Profile E Not Assigned
Relay Function Delay-Off Black
Relay 1 Green
Relay 2 Red
Orange
Profile F Not Assigned
Relay Function Delay-Off Black
Relay 1 Green
Relay 2 Red
Orange
POWER MUST BE CYCLED AFTER CHA GI G THE PROFILE SELECT SWITCH
L'alimentation Doit Être Redémarrée Après Avoir Changé Le Profil Select Switch
5

Profile Selection
The DS-4C was designed to be as adaptable as possible to different operating requirements. The mode of
operation, called the “profile”, can be selected by setting the Profile Select switch. A profile is selected by
aligning the arrow on the screwdriver slot of the switch with the appropriate number or letter. The following
table lists the operating characteristics of each profile. A CHA GE I PROFILE WILL OT TAKE
EFFECT U TIL THE DS-4C HAS HAD POWER REMOVED, THE REAPPLIED. All profiles observe the
34°F to 44°F adjustable trigger temperature. Deice functions occur when temperatures are below or equal
to the trigger temperature and precipitation is detected. Rain functions occur when temperatures are above
the trigger temperature and precipitation is detected. Profiles noted as “Low Temp Cutoff” do not initially
trigger below 15°F but will retrigger if triggered above 15°F but temperature then drops below 15°F.
“Delay-Off” is the minimum time the relay will remain closed after a detection. All delays are restarted by a
detection during the Delay-Off period. Functions for the external control leads for each profile are listed.
Profile 0 Low Temp/Precipitation Sensor with Low Temp Cutoff
Profile 1 Low Temp/Precipitation Sensor without Low Temp Cutoff
Relay Function Delay-Off Black Low Temp Manual On
Relay 1 Low Temp 20 sec Green Low Temp Standby/Reset
Relay 2 Precip 20 sec Red Precip Manual On
Orange Precip Standby/Reset
Profile 2 Deice/Rain Diversion Sensor with Low Temp Cutoff
Profile 3 Deice/Rain Diversion Sensor without Low Temp Cutoff
Relay Function Delay-Off Black Deice Manual On
Relay 1 Deice 20 sec Green Deice Standby/Reset
Relay 2 Rain 20 sec Red Rain Manual On
Orange Rain Standby/Reset
Profile 4 Deice/Rain Diversion Controller with Low Temp Cutoff
Profile 5 Deice/Rain Diversion Controller without Low Temp Cutoff
Relay Function Delay-Off Black Deice Manual On
Relay 1 Deice 30-93 min Green Deice Standby/Reset
Relay 2 Rain 2 min Red Rain Manual On
Orange Rain Standby/Reset
Profile 6 Dual Deice Controller with Low Temp Cutoff
Profile 7 Dual Deice Controller without Low Temp Cutoff
Relay Function Delay-Off Black Deice Manual On
Relay 1 & 2 Deice 30-93 min Green Deice Standby/Reset
Red Not Used
Orange Not Used
Profile 8 DS-9B Replacement with Delay, without Rain Diversion, and 2 Minute Cooldown
Relay Function Delay-Off Black Deice Manual On
Relay 1 Deice 30-93 min Green Deice Standby/Reset
Relay 2 Deice Relay 1 + 2 min Red Not Used
Orange Not Used
4
Profile 9 DS-9B Replacement with Delay On, Rain Diversion and 2 Minute Cooldown
Relay Function Delay-Off Black Deice Manual On
Relay 1 Deice 30-93 min Green Deice Standby/Reset
Relay 2 Deice Relay 1 + 2 min Red Rain Manual On
Relay 2 Rain 2 min Orange Rain Standby/Reset
Profile A Dual Deice Controller with 4°F Supercold Trigger
Relay Function Delay-Off Black Deice Manual On
Relay 1 & 2 Deice/Supercold 30-93 min Green Deice Standby/Reset
Red Not Used
Orange Not Used
Profile B DS-9B/DDC-400 Sensor Replacement
Relay Function Delay-Off Black Deice Manual On
Relay 1 Deice 20 sec Green Deice Standby/Reset
Relay 2 Deice Relay 1 + 2 min Red Rain Manual On
Relay 2 Rain 2 min Orange Rain Standby/Reset
Profile C Deice/Rain Div Controller with Delay On, Rain Diversion and 30 Minute Cooldown
Relay Function Delay-Off Black Deice Manual On
Relay 1 Deice 30-93 min Green Deice Standby/Reset
Relay 2 Deice Relay 1 + 30 min Red Rain Manual On
Relay 2 Rain 30 min Orange Rain Standby/Reset
Profile D Not Assigned
Relay Function Delay-Off Black
Relay 1 Green
Relay 2 Red
Orange
Profile E Not Assigned
Relay Function Delay-Off Black
Relay 1 Green
Relay 2 Red
Orange
Profile F Not Assigned
Relay Function Delay-Off Black
Relay 1 Green
Relay 2 Red
Orange
POWER MUST BE CYCLED AFTER CHA GI G THE PROFILE SELECT SWITCH
L'alimentation Doit Être Redémarrée Après Avoir Changé Le Profil Select Switch
5

External Control/Monitor Operation
The DS-4C provides external control and monitor
capability. Order the optional CS-3 “Control Cable” and
CS-4 “Monitor Cable” to access these points. External
Control allows the user to externally activate (Manual On)
or disable and clear the delay (Standby/Reset) for the DS-
4C relays. Connecting the White lead to a control lead will
activate the function listed in the Profile Table. This can be
achieved using a switch or dry contact. A “Standby/Reset”
function will always override a companion “Manual On”
function.
The external monitor points provide low power dry contact
closures that mimic the operation of the load relays. These
relays, rated at 24 VAC/VDC @ 400 mA, 10W maximum,
will close with their respective load relays and can be used
to externally monitor activation of the sensor.
Typical Load Wiring
The main relays are dry contacts and do not supply power directly to your load
The Yellow load leads and Red load leads connect to main relays 1 & 2 respectively. Both relays in the
DS-4C activate according to the selected profile. These relays act as normally open switches and are fully
isolated from each other. Each relay is intended to switch a separate circuit. Switching capacity of the DS-
4C is 30A per circuit, 2 separate circuits. While not as convenient as directly supplying power for the load,
dry contacts allow you to operate the DS-4C from one voltage while controlling loads of a different voltage
without adding an external relay or contactor. For example, the DS-4C can be powered from 120VAC but
can directly control a 240VAC heater and a 120VAC feed blower or two separate 277VAC heat cables.
The following diagrams show some possible wiring schemes for connecting the DS-4C to your load. Your
load may be a direct connection to heat cable, a heater, a contactor coil, or a control voltage. For clarity
the green safety GROU D leads are not shown.
NEUTRAL BUS BAR
CB
BROWN
BLUE
LOAD CENTER RED
YELLOW
BLOWER
CB
POWER SUPPLY
DS−4C
HEATER
120VAC In, 120VAC Deice Heater/Rain Blower for VSAT or Similar
6
Power & Activation Indicator
A green lamp shines through a lens on the cover of the DS-4C to indicate operational status. If this lamp is
OFF the DS-4C is not receiving power. If this lamp is steady O the DS-4C is powered but not triggered.
If this lamp blinks once Relay 1 is closed. If it blinks twice Relay 2 is closed. If it blinks three times both
Relay 1 and Relay 2 are closed. Note that, even though snow or rain may have stopped, the DS-4C
indicator will continue to flash during the Delay-Off drying cycle.
Setting the Configuration Switches and Adjustments
The following paragraphs and table outline the operating modes for the DS-4C and
explain the functions of the adjustments. Trigger temp (TT) is adjustable from
34°F-44°F (1°C-6°C) using the TRIG TEMP control. When ambient air
temperature (AT) is below this setting precipitation is assumed to be snow. When
above this setting, precipitation is assumed to be rain.
The DEL configuration switch activates the Delay-Off drying cycle timer on the DS-
4C. The timer allows the DS-4C to continue to operate and dry the heated surface through evaporation
once precipitation has stopped. The drying cycle reduces the chance of
moisture left behind refreezing into ice. This timer is restarted by each
sensor trigger. Therefore, the DS-4C will continue to operate as long as it is
triggered, then for the Delay-Off period once the trigger clears. The range of
the Delay-Off adjustment is defined in the Profile Table. The adjustment will
have no function if Delay-Off time is shown in the profile as a fixed value.
The DS-4C precipitation sensor is very sensitive and can detect a single snow flake or rain drop. However,
if the DS-4C is mounted in an area susceptible to high winds, overhanging trees, or blowing ground snow,
nuisance triggering may occur. While proper placement is the best remedy,
the SENSITIVITY control can also be used to reduce nuisance triggering.
An internal timer checks the precipitation sensor for moisture and compares
cleared time with triggered time. The highest sensitivity setting (toward
MORE) triggers on first detection. As the control is adjusted clockwise
precipitation must be detected for a longer period to be considered valid.
The lowest sensitivity setting (toward LESS) requires 120 seconds of detection before the unit triggers. If a
trace amount of snow blows onto the grid from a drift or overhang it will likely be melted and evaporated in
less than a minute. Similarly, a very light snowfall may also clear quickly from the grid. If these conditions
should be ignored by the sensor the SENSITIVITY control can be adjusted as required. However, to
prevent non-triggering during a true event, it is recommended that the user start at highest sensitivity
(MORE), then adjust while monitoring operation over time.
Fine Adjustment for Efficient Operation
The DS-4C is shipped with the TRIG TEMP and DELAY OFF adjustments in the center position,
representing 39°F (3.9°C) and mid point of Delay-Off time respectively. It is also set for highest
SENSITIVITY. Depending on local conditions the user may find that fine adjustment of the controls may
provide more satisfactory operation. If the sensor does not trigger during very wet snows the trigger
temperature may need to be adjusted higher. Constant triggers from snow falling from trees or overhangs
may be reduced by adjusting SENSITIVITY. The Delay-Off time can also be adjusted to provide clean
melt-off without excessive running time. Fine adjustment can both save operating expense and provide
more reliable operation. However, to keep reliability high, always make adjustments in small increments.
3
External Control
Pin CS-3 Function
1 Green See Profile Table
2 Black See Profile Table
3 Orange See Profile Table
4 Red See Profile Table
5 White GND/Common
External Monitor
Pin CS-4 Function
1 Black Relay 1 Monitor
2 Red Relay 1 Monitor
3 Green Relay 2 Monitor
4 White Relay 2 Monitor

Selecting a Mounting Location for the DS-4C
The interleaved grid on the top of the DS-4C is the precipitation or “moisture" sensor. The brass cylinder
protruding from the bottom of the enclosure is the temperature sensor. For reliable rain and snow detection
the unit must be mounted in a location that exposes the moisture sensor to a clear view of the sky. The unit
should not be mounted directly under eaves or overhangs. It should not be mounted so close to the ground
that it may become buried in snow. For proper temperature detection the DS-4C must be mounted
outdoors, away from sources of heat. Operating temperature range is -40°C to +85°C. Note that, when
powered, the DS-4C moisture grid will always remain hot. This is normal. This allows the sensor to
continuously melt snow and evaporate both rain and snow from the grid. The DS-4C can be mounted by
screwing the base conduit hub onto an appropriate size free-standing conduit or by using the mounting
holes in each corner of the enclosure.
DO OT DRILL HOLES THROUGH THE E CLOSURE FOR MOU TI G!
e Font Pas Les Trous De Foret Par La Boîte Pour Le Support!
This can allow water into the enclosure causing a potential shock hazard. It is recommended that a
weatherproof junction box be mounted below the DS-4C for termination of the power and load pigtails to
the equipment/building wiring.
Use Care When Replacing the Front Cover. Do ot Pinch the Gasket or Overtighten the Screws.
0
F
E
D
C
B
A
9
8
7
6
5
4
3
2
1
TEMPERATURE ADJUST
DELAY OFF ADJUST
SENSITIVITY ADJUST
LOAD1 LOAD2 INPUT POWER
PROFILE SELECT
MONITOR JACK
GRID JACK
CONTROL JACK
ALWAYS FOLLOW LOCAL AND NATIONAL ELECTRICAL CODES
Toujours Suivre Les Codes Électriques Locaux Et Nationaux
2
BROWN
BLUE
LOAD CENTER
CB
RED
YELLOW
240VAC LOAD
CB
240VAC LOAD
DS−4C
POWER SUPPLY
240VAC In, Dual 240VAC Load, Heat Panels or Similar
DO OT ATTEMPT TO I CREASE SWITCHI G CAPACITY BY WIRI G THE RELAYS I PARALLEL
e Pas Tenter D'Augmenter La Capacité De Commutation Par Le Câblage Des Relais En Parallèle
DO OT USE THE DS-4C E CLOSURE AS A JU CTIO BOX
e Pas Employer Une DS-4C As Une Boîte De Jonction
Moisture Grid Maintenance & Replacement
It is recommended that the DS-4C be powered down and the grid wiped clean with clear water at least
once every 4 months. Heavy deposits may be removed using a non-metallic scouring pad (Scotch-BriteTM
or equivalent.) However, after a number of years, the corrosive elements left behind when water is
evaporated out of the moisture grid will eventually damage the grid rings. The moisture grid can be easily
replaced by ordering and installing an MG-5 “Moisture Grid Assembly” and following the procedure below:
THIS PROCEDURE SHOULD O LY BE PERFORMED BY QUALIFIED PERSO EL!
CE PROCÉDÉ DEVRAIT SEULEME T ÊTRE EXÉCUTÉ PAR LE PERSO EL QUALIFIÉ!
Open all power and load breakers connected to the DS-4C. Open the front cover and remove the cable
connector from the Grid Jack. Unscrew and remove the old moisture grid. Pass the new moisture grid
connector through the top hole and screw the assembly into the reducing bushing. Tighten the grid hand
tight plus ¼ turn. Connect the new cable to the Grid Jack. Confirm that the four connector pins are
properly aligned with the jack. Close the front cover, confirming that the front cover gasket is properly
sealed. Reapply power.
7
General Safety Instructions
1. THIS U IT SHOULD BE I STALLED, OPE ED, A D REPAIRED BY QUALIFIED PERSO EL
O LY!
CETTE U ITÉ DEVRAIT ÊTRE I STALLÉE, OUVERTE, ET RÉPARÉE PAR LE PERSO EL
QUALIFIÉ SEULEME T!
2. To avoid shock hazard do not open the front cover with power connected to the DS-4C or any
controlled equipment.
Pour éviter la décharge électrique déconnectez toute la puissance avant d'ouvrir la couverture du DS-
4C.

LIMITED WARRANTY
The DS-4C is warranted against defects in workmanship and materials for two years from date of sale.
This warranty does not apply to damage resulting from accident, misuse, or alteration nor where connected
voltage is more than 5 above the configured operating voltage, nor to equipment improperly installed or
wired or maintained in violation of this Owner’s Manual. No other written or oral warranty applies. No
employee, agent, dealer or other person is authorized to give any warranties on behalf of ASE.
Units returned for warranty repair cannot be modified from shipped condition and leads must
protrude a minimum of 6 inches from the base conduit hub. Repair costs of a modified unit will be
quoted as the unit must be returned to the original, unmodified condition prior to return shipping. The
customer shall be responsible for all costs incurred in the removal and/or reinstallation and shipping of the
product for repairs. Within the limitations of this warranty, inoperative units should be returned, freight
prepaid, to ASE, and we will repair or replace, at our option, at no charge to you with return freight paid by
ASE to destinations within the U.S. and Canada. It is agreed that such repair or replacement is the
exclusive remedy available from ASE and that ASE IS NOT RESPONSIBLE FOR DAMAGES OF ANY
KIND, INCLUDING INCIDENTAL AND CONSEQUENTIAL DAMAGE. Some states do not allow the
exclusion or limitation of incidental or consequential damages so the above exclusion may not apply to
you. The warranty gives you specific legal rights, and you may also have other rights which vary from state
to state.
Input: 100-277 VAC +/- 5 , 47-63 Hz
Control: 2 x 277 VAC @ 30A
Operating Temp: -40°C to +85°C
AUTOMATED SYSTEMS ENGINEERING, INC.
2519 E SAINT VRAIN ST
COLORADO SPRINGS, COLORADO 80909
PHONE: [phone] FAX: [phone]
Visit us on the Internet at: www.goase.com
CM
US
C
Intertek
T
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S
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CAUTIO : Read all instructions carefully before installation.
Save this Installation Manual for future reference.
DS-4C
RAIN/SNOW SENSOR CONTROLLER
I STALLATIO MA UAL
2 x 30 A 277V AC, 20 A 28V DC
AVERTISSEMENT: IL PEUT Y AVOIR UN CIRCUIT SECONDAIRE SOUS TENSION
CERTIFIED TO CAN/CSA STD C22.2 NO. 14
CONFORMS TO UL STD 508
100−277V AC 0.15 A 50/60 z
ENCLOSURE TYPE 3R
RAIN/SNOW SENSOR CONTROLLER
WARNING: T IS UNIT MAY BE SUPPLIED BY MORE T AN ONE BREAKER
CONTROL
INPUT
USC
Intertek
3175102
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ACTIVATED
ENGINEERING
DANGER
DS−4C
AUTOMATED
SYSTEMS
INDICATOR
POWER
OFF
CM
Manufactured By
AUTOMATED
SYSTEMS
ENGINEERING
2519 East Saint Vrain St Colorado Springs, Colorado 80909