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South Bend, Indiana USA

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DEICING CONTROLLER INSTALLATION MANUAL | PART NO.

25123

REV

0.0

DESCRIPTION

The Snow Switch Model HSC-24, 24-volt Pavement-Mounted Snow

and Ice Sensor reliably detects snow and ice conditions on pavement

surfaces. The HSC-24 pavement sensor ensures that deicing heaters

operate only while needed which minimizes energy costs without

sacrificing snow melting effectiveness.

The HSC-24 is designed to be self-contained eliminating the need for

an additional control panel, and it’s independent relay-contact output is

compatible with most heater control systems.

As part of a snow melting system, the HSC–24 sensor will signal for snow

and ice melting at pavement temperatures below 38°F (3.3°C) while

moisture in any form—including water, snow, sleet or ice—is present.

MODEL HSC-24

PAVEMENT-MOUNTED SNOW AND ICE SENSOR

Содержание SNOW SWITCH HSC-24

Страница 1: ...needed which minimizes energy costs without sacrificing snow melting effectiveness The HSC 24 is designed to be self contained eliminating the need for an additional control panel and it s independen...

Страница 2: ...t are being deiced Position the sensor centered between the heater cables or tubing This will allow the sensor to be exposed to a surface temperature that is typical of the deiced area without causing...

Страница 3: ...d duct sealant until it is pliable In addition to sealing the wiring conduit the duct sealant should occupy space in the housing so that it will displace water that might enter This will minimize the...

Страница 4: ...INSTALLATION MANUAL PART NO 25123 REV 0 0 4 FIGURE 1 HSC 24 Pavement Sensor Installation FIGURE 2 Remove protective hex screw to reveal Height Adjustment Screw FIGURE 3 Rotate Height Adjustment Screw...

Страница 5: ...orketi com DEICING CONTROLLER INSTALLATION MANUAL PART NO 25123 REV 0 0 5 FIGURE 6 Wire connections for dry contact control FIGURE 4 Wire connections for 24 ac loads FIGURE 5 Wire connections for exte...

Страница 6: ...The HSC 24 has an internal self test mode which can be used to help verify correct operation A Digital Volt Meter DVM is used to test its operation 1 Verifythesupplyvoltagetothesensor Withthesystem t...

Страница 7: ...action will happen a The heater turns on for three seconds During this time the current draw will increase to 0 25 amps This can be monitored with the current meter as described in part 2 b As shown...

Страница 8: ...est mode Testing section 2 apply power to the sensor and within four seconds quickly interrupt and restore the power twice After a two second delay the unit will pulse both the heater and output one s...

Страница 9: ...AINTENANCE The top of the sensor should be kept reasonably clean and free of gravel leaves mud or other debris If paving material salt or another residue becomes adhered to the sensing elements clean...

Страница 10: ...Operating Power 6 W max Snow Ice Sense Response Time 10 to 20 seconds Output Signal Voltage drop Output Off Relay Open Output On snow ice present Relay Closed Contact Rating 220 Vdc 250 Vac 2 A 60 W 6...

Страница 11: ...ear limited warranty covering defects in workmanship and materials applies Contact Customer Service for complete warranty information DISCLAIMER ETI makes no representations or warranties either expre...