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SNOW/ICE CONTROL INSTALLATION GUIDE  |  PART NO. 

25161

 REV 

0.0

PACKING LIST

QTY.

PART NO. DESCRIPTION

21496

EUR–5A Snow and Ice Melting Control

25076 

High Temperature Limit Sensor

14257 

Power Transformer, 50 VA, 120 V to 24 V

21357

RCU–3 Remote Control

1

21184

Fuse Kit

1

21776

EUR–5A Installation Guide ( this document )

DETERMINING THE AMOUNT OF SENSORS YOU 

CAN USE

The EUR–5A has 46 watts of power available for 

use between the sensors and contactor. The power 

requirement of your contactor will determine the amount 

of watts left available for your sensors. After determining 

your contactor’s power requirement, subtract that from 

the 46 available watts, the result will be your available 

power for your sensors. You can then take your available 

power and use that to determine the number of sensors 

you can use.
• Each CIT–1 aerial sensor (at least one is required) uses 

2.4 watts of power

• Each GIT–1 gutter sensor uses 6 watts of power
• Each SIT–6E pavement sensor uses 6 watts of power

At least one CIT–1 Areal sensor is required for an effective 

snow/ice melt system. Make sure your combined sensor 

and contactor’s power use does not exceed 46 watts.

ENVIRONMENTAL SENSORS

The use of sufficient appropriately-placed environmental 

sensors  is  important  for  effective  and  efficient  system 

operation. An aerial snow sensor can give the system 

a head start in protecting against snow or ice buildup, 

yielding more consistent protection.

MODEL EUR

-5A

AUTOMATIC SNOW/ICE MELTING SYSTEM CONTROL PANEL

Copyright © 2019 ETI,

®

 All rights reserved.

Содержание Snow Switch EUR-5A

Страница 1: ...able watts the result will be your available power for your sensors You can then take your available power and use that to determine the number of sensors you can use Each CIT 1 aerial sensor at least one is required uses 2 4 watts of power Each GIT 1 gutter sensor uses 6 watts of power Each SIT 6E pavement sensor uses 6 watts of power At least one CIT 1Areal sensor is required for an effective sn...

Страница 2: ... should be housed in a protected location that meets local electrical code The EUR 5A can be mounted in the same panel as the heater contactors as long as no unrelated circuits are present and the required internal spacings and barriers are implemented If the EUR 5A needs to be located in an area where it might be exposed to environmental hazards the EUR 5A should be housed in a NEMA enclosure sui...

Страница 3: ...ries with the 24 volt supply connection to the environmental sensors that use power this power source is full wave rectified These fuses are necessary to protect the EUR 5A from an overload or short in the sensor or its wiring The 24 VAC Return is not ground a floating ac power source such as the transformer secondary is used here 3 GROUNDING Terminals 18 or 19 The EUR 5A sensor circuits and the E...

Страница 4: ...TER INTERFACE Terminals 10 11 12 13 14 15 and 16 The EUR 5A provides three contact closure outputs to the EMC to indicate operational status with indications of SupplyPresent SnowPresent andHeatOn Thesefloating relay contacts share a common connection terminal 13 The SUPPLY PRESENT terminal 14 connects to the common terminal 13 when the EUR 5A is receiving 24 volt power The SNOW PRESENT terminal 1...

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