RC840
Installation Guide
On/Off Switching Electric Heating Relay
n
Application
The RC840 Electric Heating Relay is designed to control a line
voltage resistive load from a 24 V control signal.
The RC840 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.
I
o
Installation
The RC840 must be installed in an area where the temperature is
between -4°F and 140°F (-20°C and 60°C).
The RC840 can be installed on the side of an electrical box or a
distribution panel or inside the wiring compartment of an electric
baseboard.
1.
p
2.
Typical Wiring Diagrams
Junction box
Black
Red
You must provide an overload protection and disconnect as required.
Figure 1 : Connection to a 2-wire low voltage thermostat using a 24 V
external transformer
Junction box
Black
Red
External 24V
transformer
Load
External 24V
transformer
Low-voltage
2-wire
thermostat
3.
For proper installation, use
a screw and a washer.
On the side of
an electrical box
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.
Inside the wiring compartment
of a baseboard
n Secure relay to the mounting surface using the two mounting
brackets. Use the supplied lock nut to secure the relay to the
junction box.
o Wire the relay and connect according to typical wiring diagrams
(refer to figures 1, 2 and 3).
p Once mounting and wiring have been completed, return power
to the heating system and test the installation.
q 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.
Low-voltage
3-wire
Load
You must provide an overload protection and disconnect as required.
Figure 2 : Connection to a 3-wire low voltage thermostat using a 24 V
Junction box
Load
Junction box
Load
You must provide an overload protection and disconnect as required.
Transformer VA output = RC840 Quantity x 1.2 VA
Figure 3 : Connection to a 2-wire low voltage thermostat using a 24 V
external transformer and multiple relays
external transformer
Black
Red
Black
Red
thermostat
Low-voltage
2-wire
thermostat
External 24V
transformer
RC840 400-276-000-C 17/1/07 1/2
q
Ensure ratings are suitable for your application.
Ambient operating temp.: -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: 7 oz. (198 g)
Terminal wire size: 12 AWG
Certification:
r
Electrical Specifications
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 V / 40 mA / 1 VA
RC840 Dimensions
4.
;
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
(ii) contact AUBE. AUBE will make the determination whether the
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,
5.
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.
If you have any questions on the product installation or operation,
contact us at:
Warranty
the place from which you purchased it, or
product should be returned, or whether a replacement product
can be sent to you.
Customer Assistance
6.
7.
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
Dimensions are expressed in INCHES [MM]
RC840 400-276-000-C 17/1/07 2/2
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