aube RC840T ON/OFF Switching Electric Heating Relay with Built In 24V Transformer Installation Guide
- June 9, 2024
- aube
Table of Contents
aube RC840T ON/OFF Switching Electric Heating Relay with Built In 24V
Transformer
Application
The RC840T Electric Heating Relay is designed to control a line voltage
resistive load from a low voltage thermostat. The RC840T relay has a built-in
24 V transformer and is compatible with 3-wire (R,C,W) thermostats as well as
2-wire mechanical and battery-operated thermostats.
The RC840T operates silently and can be installed in bedrooms, living rooms,
or any other occupied area without disturbing occupants. On a call for heat,
the relay is immediately activated; there is no delay. This increases
temperature control and comfort.
NOTE: Not recommended for fast-cycling modulated regulation. For fast-
cycling heating equipment, It is recommended to use the RT850 or RT850T
(integrated 24 V transformer) Solid State Relay.
Installation
The RC840T must be installed in an area where the temperature is between -4°F
and 140°F (-20°C and 60°C).
The RC840T can be installed on the side of an electrical box or a distribution
panel or inside the wiring compartment of an electric baseboard.
All wiring must comply with national and local electrical code regulations.
Installation should be carried out by an electrician.
Disconnect power supply before installing the relay to prevent electrical
shock.
- Secure relay to the mounting surface using the two mounting brackets. Use the supplied lock nut to secure the relay to the junction box.
- Wire the relay and connect according to typical wiring diagrams (refer to figures 1 & 2).
- Once mounting and wiring have been completed, return power to the heating system and test the installation.
- Increase the thermostat temperature to activate the relay. Allow system operation long enough to proof installation. Once installation has been proofed, set temperature to normal setpoint.
Typical Wiring Diagrams
Electrical Specifications
Ensure ratings are suitable for your application.
Models
|
RC840T- 120
|
RC840T- 240
|
RC840T- 277
|
RC840T- 347
---|---|---|---|---
Voltage (VAC)| 120| 208| 240| 277| 347
Resistive load (A)| 22| 22| 22| 19| 18
Inductive load (HP)| 0.8| 1.0| 1.5|
FLA| 16| 13| 12
LRA| 42
Control signal| 24 VAC / 40 mA / 1.2 VA
- Transformer ratings: 24 VAC / 1.2 VA / Class 2
- Ambient operating temperature: -4°F to 140°F (-20°C to 60°C)
- Ambient storage: -40°F to 175°F (-40°C to 80°C)
- Humidity limits: 0 to 95% non-condensing
- Net weight: 11.5 oz. (326 g)
- Terminal wire size: 12 AWG
- Certification:
RC840T Dimensions
Dimensions are expressed in INCHES [MM]
Warranty
Resideo warrants this product, excluding battery, to be free from defects in workmanship or materials, under normal use and service, for a period of three (3) years from the date of first purchase by the original purchaser. If at any time during the warranty period the prod-uct is determined to be defective due to workmanship or materials, Resideo shall repair or replace it (at Resideo’s option). If the product is defective,
- return it, with a bill of sale or other dated proof of purchase, to the place from which you purchased it; or
- call Resideo Customer Care at 1-800-468-1502. Customer Care will make the determination whether the product should be returned to the following address: Resideo Return Goods, 1985 Douglas Dr. N., Golden Valley, MN 55422, or whether a replace-ment product can be sent to you.
This warranty does not cover removal or reinstallation costs. This warranty
shall not apply if it is shown by Resideo that the defect was caused by damage
which occurred while the product was in the pos-session of a consumer.
Resideo’s sole responsibility shall be to repair or replace the product within
the terms stated above. RESIDEO SHALL NOT BE LIABLE FOR ANY LOSS OR DAMAGE OF
ANY KIND, INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING,
DIRECTLY OR INDIRECTLY, FROM ANY BREACH OF ANY WAR-RANTY, EXPRESS OR IMPLIED,
OR ANY OTHER FAILURE OF THIS PRODUCT.
Some states do not allow the exclusion or limitation of incidental or
consequential damages, so this limitation may not apply to you. THIS WARRANTY
IS THE ONLY EXPRESS WARRANTY RESIDEO MAKES ON THIS PRODUCT. THE DURATION OF
ANY IMPLIED WARRANTIES, INCLUDING THE WARRANTIES OF MERCHANT-ABILITY AND
FITNESS FOR A PARTICULAR PURPOSE, IS HEREBY LIMITED TO THE ONE/THREE/FIVE YEAR
DURATION OF THIS WARRANTY. Some states do not allow limitations on how long an
implied warranty lasts, so the above limitation may not apply to you.
This warranty gives you specific legal rights, and you may have other rights
which vary from state to state. If you have any questions con-cerning this
warranty, please write Resideo Customer Care, 1985 Douglas Dr, Golden Valley,
MN 55422 or call 1-800-468-1502.
Customer Assistance
1985 Douglas Dr,
Golden Valley, MN 55422 or call
1-800-468-1502.
Resideo Technologies, Inc.
1985 Douglas Drive North, Golden Valley, MN 55422
www.resideo.com
1-800-468-1502
69-2562EF—05 M.S. Rev. 08-22 | Printed in United States
© 2022 Resideo Technologies, Inc. All rights reserved.
This product is manufactured by Resideo Technologies, Inc. and its affiliates.