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OWC-R
Instruction Manual
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User Manual
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Ouellet OWC-R User Manual

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INSTALLATION MANUAL
Heating Cable for Concrete
OWC-R
series
Table of contents
1. Concrete heating cable OWC-R Series ........................................................................................................... 4
1.1 General information .................................................................................................................................. 4
1.2 Critical information ................................................................................................................................... 4
1.2.1 Required clearances ..................................................................................................................... 5
1.2.2 Always .......................................................................................................................................... 5
1.2.3 Never ............................................................................................................................................ 5
1.3 Identification of components .................................................................................................................... 6
1.3.1 Installation with reinforced concrete metal structure ................................................................... 6
2. Technical information ........................................................................................................................................ 7
2.1 Surface and power specifications for OWC-R products .......................................................................... 7
2.2 Insulation tests ......................................................................................................................................... 7
2.3 Cable resistance tests .............................................................................................................................. 8
2.4 Typical floor coverings .............................................................................................................................. 8
3. Heating options ................................................................................................................................................. 9
3.1 Floor control ............................................................................................................................................. 9
4. Installation guidelines ..................................................................................................................................... 11
4.5.1 Bypassing walls and obstacles .................................................................................................. 15
4.5.2 Installation of temperature sensor .............................................................................................. 16
4.5.3 Final steps while securing the installation .................................................................................. 17
5. Control device .................................................................................................................................................. 20
6. Foire aux questions (FAQ) ............................................................................................................................... 22
7. Warranty ........................................................................................................................................................... 24
1. Concrete heating cable OWC-R Series
WARNING!
1.1 General information
The concrete heating cables, series OWC-R is the assembly of a heating cable combined with an electrical connection which can be connected to an electrical power source. This system is typically referred to as a series heating cables set in accordance with the Canadian Electrical Code.
Installation must meet requirements specified by the following codes, when applicable:
- Canadian Electrical Code (CSA C22.1)
- American National Electricity Code (ANSI/NFPA 70)
- Any additional national or local installation code
In order to avoid any risk of electrical shocks, always make sure
the power from the electrical supply circuit is turned off
before handling the cables.
1.2 Critical information
- The OWC-R product is a system intended to heat a building either as a back-up heating system for a specific room (floor control) or as the main heating system for a specific room (ambient control with floor limit).
Note: Installations using the OWC-R system for ambient control with floor limit only, see section 3.
- The OWC-R concrete heating cable system is designed and approved for interior heat (dry and humid environments) as per specifications from the Canadian Electrical Code.
- The OWC-R concrete heating cable system is not designed for snow clearance applications or any other exterior applications.
- The OWC-R concrete heating cable system can be installed under interior partitions, staircases, showers and other sanitary fixtures, if clearances from drains and other fixed obstacles (fixed in concrete) are adhered to and provided the system is used with a temperature sensor which regulates the temperature of the concrete slab (see the following section for clearance guidelines).
- Floor temperatures will vary depending on floor insulation and characteristics. Maximum temperatures for the floor and the room depend on various factors such as the type of insulation present in the room, the slab, the number of windows, type of floor covering selected, etc...
- The OWC-R concrete heating cable system must be completely encased in concrete.
- The OWC-R concrete heating cable system must be installed by a certified electrician who is familiar with the proper assessment of power strength requirements and risks associated with installation requirements, as well as the construction techniques required for the installation and usability characteristics of the OWC-R concrete heating cable systems.
- The OWC-R concrete heating cable system is but one step in the construction of a floor. Each building trade involved is responsible for its own contract stipulations and must ensure that the work performed immediately before their work segment begins has been completely and adequately finished, all according to good engi­neering practices. Everyone is a stakeholder in the installation process and the onus of responsibility rests equally on every individual.
4
1.2.1 Required clearances
The OWC-R concrete heating cable system is designed to generate 11 W/ft² (120 W/m²) of heat when installed as specified, with spacings of 6” (15 cm). Any spacing other than those specified in the manual must first be approved by a specialist from Ouellet Canada Inc. OWC-R concrete heating cable systems must be installed according to the following minimum distances:
- 6’’ (15 cm) from the exterior perimeter of walls in the room to be heated.
- 3’’ (7.5 cm) from interior walls (if installed in ambient control by room).
- 6’’ (15 cm) from any drain or other fixed obstacle to be bypassed.
- 8’’ (20 cm) from any heating appliance anchored into the floor or coming into contact with the floor (not applicable for convector-type appliances).
- 2’’ (5 cm) within the concrete surface.
- 0.5’’ (1.3 cm) from any open combustible surface.
1.2.2 Always
- Read the present instruction book in its entirety before installing the product.
- Install the OWC-R system together with an adequate and approved temperature control device.
- Use copper wires only.
- Perform tests required in accordance with the present instruction book and record findings on the measurement chart.
- Make sure heating cables are completely encased in concrete.
- Make sure supply voltage is equivalent to the system’s rated voltage.
- Perform any repair work using the OWC repair kit available at your authorized Ouellet Canada Inc. dealer.
- Consult Ouellet Canada’s specialists for any additional information.
- We recommend installing OWC-R systems in temperatures above 5 °C (40 °F).
- Metallic structures or materials used for supporting cables or on which cables are installed must be grounded in compliance with the Canadian Electrical Code (CSA C22.1, section 10 and the National Electrical Code).
- Installers must inspect and remove any damaged or defective heating cables before they are covered up.
- Installers must provide markings on circuit-breakers (labels) that supply the electric circuit for the heating cables.
1.2.3 Never
- Install OWC-R cable sections that are less than 3” (7.5 cm) from one another. This could create overheating of the floor and cause damage.
- Reduce the length of heating cables or alter OWC-R cables in any way throughout their entire surface.
- Cross, overlap or layer heating cables (cables should never touch).
- Connect a product designed for 208/240V to 347V.
- Subject concrete cables to a bend radius inferior to 1.5” (38 mm).
- Install the temperature control device (thermostat or other) in a location which is accessible from a shower or bathtub (the control device must be installed more than 1 meter away (3 feet, 4 inches)).
- Use metal fasteners for installing heating cables or the temperature sensor.
- Install the OWC-R heating cable system if the security seal has been broken.
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1.3 Identification of components
1.3.1 Installation with reinforced concrete metal structure
1 2 3
Thermostat
1
Cable ducts for cold lead
Temperature
sensor
2
4 5 7
Ti-rap
6
6
3
6’’
Clearance from drain
and fixed obstacle
5
4
7
6’’
6
Clearance from
exterior walls
Metallic structure for
reinforced concrete
2. Technical information
WARNING!
2.1 Surface and power specifications for OWC-R products
Models OWC-R (in reel)
Product #
240V/208V
OWC-R0300 28 2.3 56’ 17.1 300
OWC-R0500 46.5 4.3 93’ 28.4 500
OWC-R0700 65.5 5.8 125’ 38.1 700
OWC-R0950 89 8.2 176’ 53.6 950
OWC-R1300 121.5 11.6 250’ 76.2 1300
1
Does not represent the room surface but rather the area covered by the cable while leaving a 6” spacing between cables and excluding
fixed elements to be bypassed and any other clearance required.
2
208V = 75% of wattage at 240V.
2
Cable Covered Surface
Spacingt 6’’ (15 cm)
sq. ft. sq. m ft m
2.2 Insulation tests
Using a megohmmeter, measure the insulation resistance of OWC-R products at each stage of the installation and note the values in the measurement chart on the electrical panel label available in the envelope provided with the product.
1
Cable length
Watts
Dangerous test. For the warranty to be applicable,
you must fill the measurement chart and ensure that all
8 measurements have been correctly recorded.
The system’s insulation resistance must be determined by a certified electrician using the following method:
- With a calibrated megohmmeter only.
- Measure the insulation resistance at the loose end of the cold lead between the phase conductor and the grounding.
- Record the value measured in the measurement chart.
- The value must be superior to 1,000,000 ohms.
- If the value is inferior to 1,000,000 ohms, postpone the work and contact Ouellet Canada’s specialists at 1 800 463-7043.
Cold lead
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2.3 Resistance tests
Cold lead
WARNING!
WARNING!
Using a multimeter, measure the OWC-R cable resistance at each stage of the installation and note the values in the measurement chart on the electrical panel label available in the envelope provided with the product.
Dangerous test. For the warranty to be applicable,
you must fill the measurement chart and ensure that
8 measurements have been correctly recorded.
The system’s cable resistance must be determined by a certified electrician using the following method:
- Use only a calibrated multimeter.
- Measure the resistance at the loose end of the cold lead between the two power conductors.
- Record the value measured in the measurement chart.
- Ensure the integrity of heating cables by comparing the value measured with the value specified on the cold lead label.
- If the value measured is null or very different from the resistance rating at any stage of the installation, postpone the work and contact Ouellet Canada’s specialists at 1 800 463-7043.
3.3 Typical floor coverings
Typical floor covering
Vinyl tiles 0.20 0.035
Linoleum 0.22 0.039
Ceramic 0.25 0.044
Low-pile carpet 0.70 0.123
Parquet ooring 0.70 0.123
Floating oor 10 mm to 16 mm (3/8” to 5/8”) 0.70 0.123
Thermal resistance
R RSI
The thermal resistance of any floor covering must
not exceed R = 1.0 (RSI = 0.246). There is no thermal
insulation limit under the floor.
IMPORTANT! Consult floor covering manufacturers when assessing a heated floor system’s compati­bility with engineered-type hardwood floors, laminate floors, vinyl-covered floors or concrete floors with glued linoleum covering.
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3. Heating options
The OWC-R concrete heating cable system is designed to maximize two different comfort objectives:
1. Floor control: used as a back-up heating source (surface heating). Will provide year round warm
and comfortable floor surface.
2. Ambient control with floor limit: used as the main heating source (ambient heating). Will provide occupants with surrounding and uniform heat. It is important to ensure that heat loss in any room does not exceed the thermal capacity of the installation and to follow all provisions outlined in the following paragraphs for these types of installation.
IMPORTANT: Because of environmental specifications which are outside Ouellet Canada Inc.’s control, such as thermal insulation, available surface, emittance of floor covering, heat losses, etc., installation of a heated floor, regardless of how precisely it is performed, cannot guarantee an entirely uniform surface temperature. Therefore, Ouellet Canada Inc. may not be held responsible for any comfort inadequacies such as a cold area on the floor which may result from deficient parameters. Ouellet Canada Inc.’s responsibility is thereby limited to the adequate performance of its products.
3.1 Floor control
Comfort heating system, provide back-up heating to the main heating system. This type of heating method will maintain a comfortable, warm floor covering at all times. Simply unroll the OWC-R concrete heating cable and cover the entire room to be heated. It is important however to adequately insulate the ground underneath the concrete cables. This insulation will ensure the least possible heat loss at the bottom level. For this type of configuration, the concrete heating cable must be connected to a suitable temperature control device (see section 5) and must be paired with a floor-type heating mode and temperature sensor. The sensor must be installed in accordance with instructions and be connected to the heated floor temperature control device.
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3.2 Ambient control with floor limit
WARNING!
Main heating system. This type of heating method will maintain heat in a room using only the OWC-R system. Each room (zone) must have its own OWC-R system along with an adequate control method (see section 5). For this type of configuration it is important to follow the recommendations specified hereafter:
- Measure the area of each room and perform a computation of heat loss in order to ensure adequate heating power.
- Install properly sized cables while taking into account the necessary clearances with respect to fixed elements such as exterior walls, drains or interior partitions.
- It is important to adequately insulate the ground underneath the concrete cables. This will provide for the least possible heat losses at the bottom level.
- Connect the heating cable to a suitable temperature control device (see section 5). This temperature control device must be paired with an ambient control with floor limit system. The temperature sensor must be installed in accordance with instructions and be connected to the heated floor temperature control device.
Installation of a concrete heating cable system is not suitable for
non-insulated or poorly insulated floors. The efficiency of this heating
method hinges on specific conditions in order to provide acceptable performance levels, such as the dimensions of area to be covered with heating cables (or percentage of surface to be heated), floor coverings that can withstand the additional thermal heat, the quality of insulation
of outer walls, etc. It is highly recommended to first examine certain
parameters and seek advice from professionals before proceeding
with the installation of this type of heating system.
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4. Installation guidelines
4.1 Work coordination
Material provided by Ouellet Canada Inc.
- OWC-R heating cables
- Installation manual
- Labels for electrical panel
- Temperature sensor
- Electrical fault indicator
- Plastic tie-wraps
Additional material required (not provided)
- Temperature control device (available from Ouellet Canada Inc.).
- Cable ducts for high voltage electrical cables (must be approved for high voltage electric cables (cold lead)).
- Cable duct for temperature sensor (low voltage). Note: Cable ducts may be of the same type. However, it is important to make sure there are independent cable
ducts for the cold lead and the temperature sensor
- Safety glasses
- String roll
- Scissors
- Measuring tape
- Broom
- Felt marker (or spray)
- Adhesive tape
- Hammer
- Multimeter and megohmmeter
- Electrician tools
Room plan and corresponding OWC-R products
1.Draw up to scale a plan of the room to be heated (for optimum accuracy, make use of the form provided by Ouellet Canada Inc.).
2. Identify all fixed elements to be bypassed: exterior walls, drains, beams, interior partitions (if installing ambient heating configuration).
3. Identify space dimensions to be heated (allow for a buffer zone at the end of each area for excess cable, if need be).
4. Establish the location of the thermostat or temperature control device.
5. Establish the location of the power cable (cold lead) to be connected to the temperature control device.
6. Measure out the area to be heated in square meters (m2) or square feet (ft2). Allow a minimum of 6” (15 cm) around exterior walls and objects to be bypassed.
Note: A space of 6” (15 cm) between cables is included in the covered surface table.
7. Select as near as possible, the OWC-R product that will cover the area to be heated.
Coordinate your installation while taking the aforementioned guidelines into account. We highly recommend planning the work process before the work begins to allow for the identification of obstacles to be bypassed, buffer zones, directions of carpet, etc. Buffer zones are normally areas that do not necessarily need to be heated (areas with little traffic) which are used for excess cable, if need be. In cases where numerous OWC-R heating cable elements are required, each starting point should be planned in a manner that allows for the required clearances to be adhered to.
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Do you need help selecting the proper type of concrete-designed heating cable system for your installation?
ITEMISATION
OWC
Proje
t/Cli
ent:
Distri.:
Entr
ep:
No:
Note:
Da
te:
Tech:
Piece
/Ro
om.:
8'-
11
1/4"
6'-111/4"
8'-
11
1/4"
6'-111/4"
T
T
T
1X OWC-M0950
Utiliser/Use
1X OWC-M4000
Utiliser/Use
1X OWC-M2400
Utiliser/Use
1X OWC-M3400
Utiliser/Use
Send us a copy of your construction plans by fax to 1 800 662-7801
or by e-mail to info@ouellet.com. Make sure you send a copy of
the plan to scale as well as a list of all fixed elements which have
to be bypassed. At the very least, we will need a horizontal measure
and a vertical measure to validate the scale. Our technical support
technicians will be pleased to provide you with a list of material and
a layout sketch to guide you through your installation. Please note
however we do not supply an installation plan for concrete heating
cable in reel OWC-R.
4.2 Sub-floor preparation
1. Ouellet Canada Inc. strongly recommends the installation of rigid thermal insulation panels (styrofoam­type - 2” minimum) underneath the concrete slab, (tongue and groove or joints taped with adhesive), with a RSI coefficient between 7.5 to 10R to help reduce the loss of heat at the bottom level.
2. Metallic reinforcement structure for reinforced concrete is required for the installation of OWC-R concrete cables. These cables are designed to be installed at a regular spacing of 6” (15 cm). It is therefore important to install a metallic reinforcement or wire mesh while adhering to this spacing. Any spacing other than those specified in the manual must first be approved by a specialist from Ouellet Canada Inc. Metallic reinforce­ment or wire mesh must be adequately supported with spacers or bricks at a recommended distance of 24” (60 cm) between supports. Wire mesh must be suitably overlapped and aligned and any sharp edge must be covered with adhesive tape (or other protective material).
Note : Please refer to the building code for recommendations pertaining to concrete sub-floors.
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Image 1
4.3 Floor markings
WARNING!
1. Use empty spaces (during construction or renovation) and with a marker or spray, draw markings on the selected rigid insulation, indicating fixed elements to be bypassed (drains, walls, obstacles, etc.). These markings will help delineate the area to be covered while keeping OWC-R heating cables at a safe distance from those fixed elements.
2. Allow for a buffer zone at the end of each area for excess cable, if need be.
3. Identify the starting point for the concrete heating cable and the space required for the installation of the cold lead duct.
4. Identify the location of the temperature sensor and temperature control device.
Image 2
4.4 Power levels and measurement chart
The master electrician in charge of installing and connecting the OWC-R concrete heating cable system must fill the measurement chart at each stage of the installation process. The measurement chart is located on the electrical panel label which is supplied in the box with the product. This chart must be supplied to the client and placed near the electrical panel.
Image 3
If the chart is not filled in properly, the warranty
will be cancelled.
Warranty conditions are specified in section 7.
13
4.5 Installation of concrete heating cables – OWC-R series
1. Before removing the product from the box, take the resistance and cable insulation details compare them to the factory results on line #1 of the measurement chart on the electrical panel label.
Note: The security seal from Ouellet Canada Inc.
guarantees the integrity of the cable in the box. Once the seal is broken, the customer becomes responsible for the integrity of the cable during the installation process. Please follow instructions carefully and adhere to recommended safety measures.
2. Remove the material from the box (cable, fasteners, fault indicator, temperature sensor).
3. Install the cable duct for the cold lead at the pre-determined location, (where the cable mat will be unrolled).
4. Feed the cold lead into the cable duct making sure the mechanical connection between the cold lead and the heating cable remains outside the cable duct by at least 12” (30 cm). There should be no part of the heating cable found near the cable duct.
ATTENTION! There should be no part of the heating cable found near the cable duct or inside the wall.
5. Install the electrical fault indicator in compliance with instructions, at the end of the cold lead.
6. Hang the cold lead and electrical fault indicator, using string or a hook, from one of the ceiling joists or other element so it is close at hand but making sure it doesn’t obstruct the installation process.
Note: Make sure the cold lead is long enough to reach the thermostat or junction box.
7. Switch the electric fault indicator ON.
Note: If the electrical fault indicator rings during the installation, immediately postpone the heating cable
installation and contact Ouellet Canada’s technical specialists.
Image 4
14
Image 5 Image 6 Image 7
8. Unroll the OWC-R cable, adhering to the required clearances and anchor cables onto the metallic reinforce­ment structure using the plastic tie-wraps supplied with the kit. It is important to solidly anchor the cables onto the metallic reinforcement structure to ensure the installation is securely in place during the concrete pouring process.
Note: We recommend loosely anchoring the fasteners while first unrolling the cables sections (in the event
of errors or modification of boundaries) and anchoring the cables more firmly thereafter when the process is complete (see step 4.5.3).
Image 8 Image 9
Image 10
9. For bypassing walls and obstacles, please refer to the instructions in paragraph 4.5.1.
4.5.1 Bypassing walls and obstacles
Upon encountering fixed elements (drains, walls) simply bypass any obstacle, while adhering to the required spacings, depending on the type of obstacle to be bypassed and solidly anchor cables onto the reinforcement using plastic fasteners supplied for that purpose.
Image 11
Note : It is also possible to use adhesive tape to secure the cable onto the reinforcement. However, we highly recommend using the fasteners supplied with the kit to ensure a sturdy installation.
15
• Never attempt to cut or shorten a heating cable.
WARNING!
WARNING!
• Be very careful while maneuvering around the heating cables.
• It is important not to subject heating cables to any kind
of mechanical stress (stretching, bend radius less than
1.5” (38 mm), notches).
Image 12
4.5.2 Installation of temperature sensor
1. Once the cables are unrolled, install the cable duct for the temperature sensor at the pre-determined location.
Note: The ideal location for the temperature sensor is a site exempt from any obstacles (walls,
doors, etc.).
2. Feed the temperature sensor into the appropriate cable duct and locate it between two parallel OWC-R cable.
3. The temperature sensor must be installed as near as possible to the floor surface and solidly anchored with a piece of wood or polystyrene foam so it will not shift during the concrete pouring process;
Note: Make sure the sensor is long enough to be connected to the thermostat.
16
The temperature sensor must be completely encased in concrete.
Image 13
4.5.3 Final steps while securing the installation
1. Once the installation of the cables and sensor is complete, you must then secure the entire installation by adding plastic tie-wraps on the cables and the sensor. A sufficient quantity of tie-wraps is supplied with the kit to ensure the installation of one (1) fastener at every 6’’ (15 cm) of cable.
2. Once all fasteners have been installed, have ready the material required for the protection of the concrete cables in accordance with the concrete pouring method selected. See section 4.6.
3. Lastly, check the resistance and cable insulation and record these measures on line # 2 of the measure­ment chart on the electrical panel label.
Image 14 Image 15
4.6 Concreting
1. Before the concrete is poured, measure the resistance and cable insulation and record these values on line #3 of the measurement chart on the electrical panel label.
2. Switch the electrical fault indicator ON BEFORE any circulation on the concrete cables and BEFORE the concreting process begins.
Image 17
Image 16
17
3. Install the material required for the protection of the heating cables during the concrete pouring process:
WARNING!
A. When using a concrete pump:
- Pay special attention when moving around the mats so as not to damage the cables.
- Always place pieces of plywood or polystyrene foam underneath the pump hose, more specifically, under the joints and connections to ensure they do not come into contact with the heating cables.
- Once the pump is activated and the concrete is pouring, always lift the end of the hose to ensure it does not come into contact with the heating cables.
B. Concreting process using a wheelbarrow:
- Pay special attention when moving around the mats so as not to damage the cables.
- Protect the heating cable installation with a piece of plywood while moving the wheelbarrow around.
- It is important to install a plywood panel underneath the wheelbarrow before pouring any concrete so the wheelbarrow buffer does not come into contact or damage the heating cables.
- Avoid using the same trajectory with the wheelbarrow. This will allocate stresses throughout the entire installation.
4. The heating cable system must be encased with a minimum of 4” to 6” (10 to 15 cm) of concrete. Note: It is imperative that the ENTIRE heating cable installation be encased in concrete. There should be
no jutting parts or heating cable visible.
5. If it’s necessary to replace the metallic structure for reinforced concrete, be careful not to catch any of the cables with the tools.
6. Level the concrete in a normal fashion paying special attention not to catch any of the cable ducts used for the cold conductor or temperature sensor
18
Image 18 Image 19 Image 20
If the electrical fault indicator rings during the pouring process, mark
the location where the cable was damaged using a stake. Delineate
an area at least 2 ft2 (0.18 m2) around the location where the cable
was damaged and DO NOT COVER that area with concrete. Finish the
concreting process and call Ouellet Canada Inc.’s specialists for
a repair kit (OWC-KIT) used for repairing the concrete cable.
4.7 Electrical connection
WARNING!
IMPORTANT: Electrical connection must be performed by a master electrician, only after the cable has been installed and encased in concrete and the curing of concrete period is complete. WARNING! DANGER OF ELECTROCUTION: always make sure the power supply circuit is turned off before proceeding with the electrical connection.
1. Measure the resistance and cable insulation and record these values on line # 4 of the measurement chart on the electrical panel label.
2. Use a control device from Ouellet to perform the connection of the OWC-R concrete cable system. Refer to section 5 to help assist you in the selection of a suitable control device for your installation.
3. Perform the connection in compliance with instructions provided in Ouellet’s operating guides for controls and in compliance with local and national electrical specifications in effect.
240/208V connection: Line 1 - black Line 2 - red Ground – yellow/green
4. For installations requiring more than one electric circuit, obtain an adequate control kit from Ouellet which includes a master thermostat as well as a sufficient number of slaves depending on the system’s power.
5. Lastly, identify the circuits at the electrical panel and stick the completed label to the electrical panel which includes all the measurements taken during the installation process.
Do not power up the OWC-R concrete cable system before
the concrete curing process is complete in accordance with the
manufacturer’s recommendations (check with the concrete supplier).
4.8 Putting into service
When the OWC-R concrete cable system is ready to be put into service, activate the circuit breaker and set the temperature according to your desired level of comfort.
Image 21
19
5. Control device
The OWC-R heating cable system must be controlled with an adequate temperature regulator depending on the type of system selected: floor control mode or ambient control with floor limit mode.
5.1 Installation for floor control mode
We recommend using an electronic floor temperature control device with a temperature sensor so the thermal gain never exceeds the maximum temperature allowed for the type of floor covering selected. Control device
recommended: Electromechanical thermostat with floor mode (F) and temperature sensor.
5.2 Installation for ambient control with floor limit mode
The thermal control device is an ambient thermostat. Because the thermostat reacts to ambient temperatures and not floor temperature, the floor covering must be selected according to a higher tolerance level. The ambient thermostat or temperature sensor should never be installed where sun rays are prevalent or in an area subject to drafts. Control device recommended: Electromechanical thermostat with ambient mode (AF)
and temperature sensor.
NOTE : Ouellet Canada Inc. highly recommends connecting the concrete cable system to a ground fault circuit­breaker/detector (GFCI), built-into the control device or directly integrated into the circuit-breaker.
20
5.3 List of control devices
The following is a list of control devices (sold separately) recommended for OWC-R concrete heating cable systems:
240/208V OWC-R0300 à OWC-R1300
Total current: 15 A and less (no relay):
Non-programmable electromechanical thermostat – series OTH770 with temperature sensor and GFCI 15 A @ 120/208/240V.
Programmable electromechanical thermostat – series TH115-AF with temperature sensor and GFCI 15 A @ 120/208/240V.
Total current: 15A to 22A (with 1 relay):
Non-programmable electronic master thermostat, low voltage, 12 VDC – OTH700-AF-12VDC with temperature sensor AND Slave module – series CT230, with GFCI - 15A @ 120/208/240V OR
Programmable electronic master thermostat, low voltage, 12 VDC, TH115-AF-12VDC with temperature sensor AND Slave module - series CT230 with GFCI - 15A @ 120/208/240V OR
Non-programmable electronic thermostat – low voltage, series OTH824 with temperature sensor and without GFCI AND On/Off relays with transformer RC840T-240 - 22A @ 208/240V OR TRIAC relays with transformer RT850T-240 - 23A @ 208/240V
Total current 22A and more (with 2 or more relays):
Non-programmable electronic thermostat – low voltage, series OTH824 with floor relay and without ground fault circuit-breaker/detector AND Switching relays – On/Off, without transformer RC840 - 22A @ 120/208/240V OR TRIAC relays without transformer RT850 - 23A @ 120/208/240V/347
OTH770
Non Programmable
Electromechanical Thermostat
CT230
Slave Unit
OTH824
Low Voltage
Electronic Thermostat
RC840
On/Off Relays
TH115
Programmable
Electromechanical Thermostat
RT850
Triac Relays
21
6. Frequently asked questions (FAQ)
Q.1: Can we cut the OWC-R heating cable to reduce its length?
A.1: NEVER. When the OWC-R concrete cable is too long, spread the excess over the entire floor. To achieve
this, arrange the heating cable in regular loops while adhering to minimum distances, along wall partitions and between parallel sections of the heating cable.
Q.2: What should be done before choosing the adequate OWC-R product?
A.2: Draw out a plan of the area to be covered. Follow steps 1 to 7 in paragraph 4.1 of the present manual or
send a copy of your construction plan by fax to 1 800 662-7801 or via e-mail to info@ouellet.com. Make sure you send a copy of the plan to scale as well as a list of all fixed elements which have to be bypassed. At the very least, we will need a horizontal measure and a vertical measure to validate the scale. Our technical support technicians will be pleased to provide you with a list of material and a layout sketch to guide you through your installation. Please note however we do not supply an installation plan for concrete heating cable in reels OWC-R.
Q.3: How do we repair the OWC-R cable in case of breakage?
A.3: First, (as a preventive method) from the very start, you should test the cable each time it is indicated in the
instruction book. As well, you should fill out the measurement chart (label supplied in the kit). However, in case of breakage, if the concrete pouring process has not begun, contact Ouellet Canada Inc.’s technical support services and ask for a repair kit (OWC-KIT). If the pouring process has begun, delineate an area of at least 2 ft2 (0.18 m2) around the damaged cable and DO NOT cover that area with concrete. Once the concreting process is complete, contact Ouellet Canada Inc.’s technical support services and ask for a repair kit (OWC-KIT). Technical support services can be reached at: 1 800 463-7043
Q.4: Are there different power levels available by square foot? A.4: Ouellet Canada Inc. estimates that 11W/ft2 (120W/m2) with a spacing of 6’’ (15 cm) is an adequate value
which should not be exceeded in order to optimize your comfort level without creating any overheating hazard.
Q.5: Can two heating cables cross, overlap or touch one another?
A.5: NEVER. This could create an overheating hazard. A minimum of 6” (15 cm) space must be maintained
between cables.
Q.6: Can the cable be bent at a 90° angle?
A.6: Yes, however you must retain a minimal bend radius of 1.5’’ (38 mm). A radius inferior to 1.5” (38 mm) could
cause mechanical breakage.
Q.7: Can two OWC-R heating cable systems be installed on top of one another?
A.7: NEVER. This could create overheating hazards and damage the cables.
Q.8: Can OWC-R concrete heating cables be used outside for snow removal purposes?
A.8: No. OWC-R heating cables are designed as a comfort or heating product for residential interior
applications only.
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Q.9: Is it mandatory to have a ground fault circuit-breaker-detector?
R.9: Although Canadian regulations in effect do not require the installation of a ground fault circuit-breaker/
detector, we highly recommend its use for concrete cable applications. In the United States, a ground fault circuit interrupter (GFCI) must be used with this heating device in bathrooms and in hydromassage bathtub locations as long as any others concrete cable installations.
Q.10: Must we have a temperature sensor?
A.10: Yes. This will control the floor surface temperature so it does not exceed the maximum temperature
allowable for the type of floor covering used. Although it is not mandatory to have a temperature sensor when the system is used with an ambient air thermostat, Ouellet Canada Inc. recommends using a temperature sensor as well.
Q.11: Can two OWC-R concrete cable systems be connected to the same thermostat?
A.11: Yes, (more if need be) parallel-connected if the total capacity does not exceed that of the thermostat.
Q.12: What happens when the voltage applied is the wrong one?
A.12: A product intended for 240/208V connected to 347V: there will be overheating and then a breakdown will
occur. It is therefore very important to connect the product to the proper voltage.
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7. Warranty
Subject to provisions stipulated in the Consumer Protection Act’s legal requirements respecting the quality and durability of goods: Ouellet Canada Inc. guarantees its OWC-R heating cables and its heated floor systems for a period of 20 years from the date of purchase against any manufacturing defect or malfunction.
Limitations and exclusions
The above mentioned guarantees are limited to the reimbursement of the original purchase cost or replacement of the heating cables and/or defective thermostat (hereinafter called equipment) excluding any other part and also excluding any cost or any expense relating to connection, removal or installation of aforesaid equipment, including all workmanship costs. The buyer may choose between the reimbursement of the original purchase cost and the replacement of defective equipment, subject to the aforementioned restrictions. This warranty is provided to the original buyer of the equipment as well as subsequent owners of the building where the equip­ment was installed.
Warranty terms
The above mentioned warranties are subject to the following conditions: i. The buyer must provide the original purchase invoice for the defective equipment, to Ouellet Canada Inc.
or to one of their authorized dealer;
ii. The buyer must report promptly in writing to Ouellet Canada Inc. any malfunction of equipment covered by
the present warranties, in a reasonable time frame, from the time the malfunction occurred or the malfunction was brought to their knowledge thereby enabling Ouellet Canada Inc.’s representatives enough time to verify the defective equipment, if need be;
iii. Equipment covered under the present warranties must be installed in compliance with Ouellet Canada Inc.’s
instructions;
iv. Equipment covered under the present warranties must be used under normal conditions of use and be
maintained on a regular basis from the date of purchase.
Name and address of the person providing the present warranties:
Ouellet Canada inc.
180, 3e Avenue L’Islet (Québec) G0R 2C0 CANADA Telephone: 1 800 463-7043 or 418 247-3947 Fax: 1 800 662-7801 or 418 247-7801 info@ouellet.com www.ouellet.com
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Rev. 1, March 2012
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