aube RC840T Electric Heating Relay Installation Guide
- June 13, 2024
- aube
Table of Contents
RC840T
Installation Guide
On/Off Switching Electric Heating Relay with Built-in 24 V Transformer
This is a legacy product document supported by Resideo. It is no longer
manufactured
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 batteryoperated 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
** You must provide an
overload protection and disconnect as required.
Figure 1 : Connection to a 2-wire low voltage thermostat
** You must provide an overload protection and disconnect as
required.
Figure 2 : Connection to a 3-wire low voltage thermostat
Electrical Specifications
Ensure ratings are suitable for your application.
| Voltage (VAC) | 208 | 240 | 277 | 347 |
|---|---|---|---|---|
| Resistive load (A) | 22 | 22 | 19 | 18 |
| Inductive load (HP) | 1.0 | 2. | ||
| FLA | 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)
Terminalwiresize: 12 AWG
Certification:
RC840T Dimensions
Dimensions are expressed in INCHES [MM]
Warranty
AUBE warrants this product, excluding battery, to be free from defects in the
workmanship or materials, under normal use and service, for a period of three
(3) years from the date of purchase by the consumer. If at any time during the
warranty period the product is determined to be defective or malfunctions,
AUBE shall repair or replace it (at AUBE’s option).
If the product is defective,
(i) return it, with a bill of sale or other dated proof of purchase, to the
place from which you purchased it, or
(ii) contact AUBE. AUBE will make the determination whether the product should
be returned, or whether a replacement 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 AUBE that the defect or malfunction was
caused by damage which occurred while the product was in the possession of a
consumer.
AUBE’s sole responsibility shall be to repair or replace the product within
the terms stated above. AUBE 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 WARRANTY, EXPRESS OR IMPLIED, OR ANY OTHER
FAILURE OF THIS PRODUCT. Some provinces, states or regions 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 AUBE MAKES ON THIS PRODUCT. THE
DURATION OF ANY IMPLIED WARRANTIES, INCLUDING THE WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IS HEREBY LIMITED TO THE
THREE-YEAR DURATION OF THIS WARRANTY. Some provinces, states or regions 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 one province, state or region to another.
Customer Assistance
If you have any questions on the product installation or operation, contact us at:
705 Montrichard Avenue
Saint-Jean-sur-Richelieu, Quebec
J2X 5K8
Canada
Tel.: 450-358-4600
Toll-free: 1-800-831-AUBE
Fax: 450-358-4650
Email: aube.service@honeywell.com
For more information on our products, go to
www.aubetech.com
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