Part Number 21357
RCU–4 REMOTE CONTROL UNIT
Part Number 21358
We Manage Heat ®
Unpacking
Inspect the shipping container and packing material for damage. Save the shipping container and related materials until
normal operation has been established. If the unit must be returned, take care to ensure that it is packed as it was received.
Packing List
RCU–3
21357
18581
21385
21370
RCU–4
RCU–3 Remote Control Unit (Qty 1)
Wall plate screws (Qty 2)
25' unshielded 22 gauge 2-wire jacketed cable
RCU–3/RCU–4 Installation Manual
RCU–3 Remote Control
ETI P/N 21357
D1
GRN
21358
18581
21385
21370
RCU–4 Remote Control Unit (Qty 1)
Wall plate screws (Qty 2)
25' unshielded 22 gauge 2-wire jacketed cable
RCU–3/RCU–4 Installation Manual
D2
YEL
R1
R3
S3
RCU–4 Remote Control
ETI P/N 21358
R2
No Connection
EMC Heater On
Equipment Ground
9
Equipment Ground
8
EMC Override Off
7
EMC Snow Present
No Connection
6
EMC Supply Present
No Connection
5
EMC Output Common
No Connection
4
EMC Override On
No Connection
3
EMC Input Common
No Connection
2
Remote Control
1
Remote Control Return
Temperature Sensor
Temperature Sensor Return
R4
10 11 12 13 14 15 16 17 18 19
J1
2,000' (609.6m) max,
20' (6m) supplied
D1
GRN
D2
YEL
R1
R3
S3
R2
2,000' (609.6m) max,
20' (6m) supplied
R4
J1
22 21 20 19 18 17 16 15 14 13 12 11 10 9
8
7
6
5
4
3
2
RCU–3 Remote Control
ETI P/N 21357
1
Fig 1: RCU–3 and RCU–4 remote connections to C-series
panels.
Fig 2: RCU–3 remote connections to EUR–5A.
Environmental Technology, Inc.
1850 N Sheridan Street • South Bend, IN 46628
(574)233-1202 • Fax (574)233-2152
Toll Free (800)234-4239 • Fax (888)234-4238
www.networketi.com • helpdesk@networketi.com
21370 rev -
04/08
(800) 234-4239
http://www.networketi.com
Environmental Technology, Inc.
1 of 2
INSTALLATION MANUAL
RCU–3 REMOTE CONTROL UNIT
®
Model RCU–3 and RCU–4
ORDERING INFORMATION
Control Panels
22470
22471
22472
22473
22475
22476
22477
22478
22480
22481
21496
Description
APS–3C Control Panel, 120 VAC
APS–3C Control Panel, 208/240 VAC
APS–4C Control Panel, 208-240 VAC 50/60 Hz Three Phase
APS–4C Control Panel, 277 VAC 50/60 Hz Single Phase
APS–4C Control Panel, 277/480 VAC 50/60 Hz Three Phase
APS–4C Control Panel, 600 VAC 50/60 Hz Three Phase
SC–40C Satellite Contactor, 208-240 VAC 50/60 Hz Three Phase
SC–40C Satellite Contactor, 277 VAC 50/60 Hz Single Phase
SC–40C Satellite Contactor, 277/480 VAC 50/60 Hz Three Phase
SC–40C Satellite Contactor, 600 VAC 50/60 Hz Three Phase
EUR–5A Snow Switch®
Control Panel Accessories
21357
21358
19272
22690
RCU–3 Remote Control (Optional; APS–3C only)(Qty 1 included EUR–5A only)
RCU–4 Remote Control (Optional; APS–4C and SC–40C only)
High Temperature Sensor w/ 20' (6m) lead (Qty 1 included)
PTS–100 Embedded Temperature Sensor (Optional)
Snow/Ice Sensors (Not Included)
10001
CIT–1 Aerial Snow Sensor
11351
GIT–1 Gutter Ice Sensor
20756
SIT–6E Pavement Mounted Snow/Ice Sensor
LIMITED WARRANTY
ETI’s two year limited warranty covering defects in workmanship and materials applies. Contact Customer Service for complete
warranty information.
DISCLAIMER
Environmental Technology, Inc. makes no representations or warranties, either expressed or implied, with respect to the contents
of this publication or the products that it describes, and specifically disclaims any implied warranties of merchantability or
fitness for any particular purpose. Environmental Technology, Inc. reserves the right to revise this publication, and to make
changes and improvements to the products described in this publication, without the obligation of Environmental Technology,
Inc. to notify any person or organization of such revisions, changes or improvements.
The ETI logo, Snow Switch, Floorstat, Tracon, We Manage Heat, APS, RCU, CIT, GIT, SIT are registered trademarks of Environmental Technology, Inc.
Copyright © 2006 Environmental Technology, Inc. All rights reserved.
2 of 2
Environmental Technology, Inc.
http://www.networketi.com
(800) 234-4239
21370 rev -
04/08