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SunTouch Floor Warming 1201216U2R Instructions / Assembly
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1. Floor sensing SunStat control program includes an Installation Manual and staple gun tape measure marker wire mable or dial with built in GFCI NailTites stripper screwdriver drill with 1 4 and GFCI circuit breaker SunStat controls e Electrical junction box for power leads 1 2 drill bits and electrical fish tape have a built in GFCI therefore the GFCI e An extra deep electrical box for the e Insulation R 13 or R 19 fiberglass type circuit breaker is not recommended floor sensing control recommended since two GFCls may conflict and cause e 12 gauge electrical wiring problems If using the SunStat controls e 3 4 conduit to protect power leads if use a Standard circuit breaker required by local code Items available from SunTouch All other items are not included and can be purchased locally t The SunStat and SunStat Relay are approved for use in the U S and Canada separate from the SunTouch Listed assembly Read these cautions carefully before beginning the installation NEVER cut the mat or remove the foil radiator or modify the mat in any way The mat must remain intact However the power leads may be cut shorter if necessary but never removed completely NEVER leave the mat rolled up or bunched in the joist bay Make sure the mat is completely unrolled and is installed completely flat NEVER attempt to repair the mat if it is damaged Call the factory for instructions NEVER install one ma
2. or black to black white to white Pull the sensor wires loose from the control and reinsert them If this does not solve the problem loosen the sensor wires from the control and measure resistance across the sensor wires For a SunTouch control sensor the resistance should be between 17 000 ohms at 55 F 13 C and 8 000 ohms at 85 F 29 C See sensor wire resistance values on page 6 Turn circuit breaker off then on to reset the SunStat Floor sensor is loose or broken or control is set on AIR sense Floor heats continuously Make sure wiring connections are correct Consult the wiring diagram on the back of the control the instructions that came with the control or the wiring diagrams in Part 6 of this manual to make sure the four connections are correct Incorrect wiring The control was bypassed when it was wired to the power supply Defective control Return control to dealer for replacement Control is not working correctly If a programmable control the programming may be incorrect Carefully read and follow control programming instructions Incorrect voltage supplied or mismatched components used Measure voltage at the control and make sure it matches the control voltage rating and the mat voltage rating Make sure electrical components are compatible Floor sensor is not wired properly or is not working properly Make sure only one floor sensor is connected to the control Also see Se
3. adhered and sealed under the sensor This will isolate the sensor from the heated joist space and give a truer floor surface temperature Method 2 If it is not possible to drill a hole to set the sensor in the sub floor it may be held flat to the subfloor with a nylon wire clip Locate the sen sor in a joist bay directly over where a mat will be installed about 2 from the joist Insulate the sensor with addi tional blueboard or fiberglass insula tion 1 2 thick and 6 square This will help isolate the sensor from the heated joist space Method 3 If possible install the sensor directly into or under the floor covering area If the floor surface is tiled a grout line can be removed and the sensor laid into this grout line Drill a hole into the wall behind the baseboard trim area and directly below the control electrical box Feed the sensor through the knock out down to the hole that was drilled near the floor and out into the floor above where the heating mat will be installed Locate the sensor at least 1 ft from outside walls and near the center of a joist space Complete the rest of the installation before covering or regrouting over the sensor Method 3 Remove the grout 1 4 to 1 2 deep Install sensor Reinstall grout over the sensor and sensor wire 8 SunTouch UnderFloor Installation Manual PART 3 Install the Mat See Part 6 for typical wiring dia ity These items can damage
4. walls and open ends of joist spaces and the floor will not warm as it should Seal openings around pipes waste lines ducts joist blocking and all other gaps with silicone caulking or urethane foam vided with the SunStat for proper setting Without floor insulation the mat will not heat the floor When the SunStat calls for heat to the mat the mat will begin to feel warm to the touch within 1 to 2 minutes or so If this does not occur recheck the SunStat settings wir ing connections and power supply Apply the Warning Label Apply the Radiant Heating Warning Label pg 5 to the control or nearby location The mat power leads and sensor wire connected to the control at the electrical box a San L DNINE at be ipar spe ES JEN saa REMEMBER Proper insulating and sealing of the floor cavity is necessary for the performance of SunTouch UnderFloor mats SunTouch UnderFloor Installation Manual T T PART 6 Wiring Diagrams Typical Electric Wiring Diagram with SunStat Control 120V Dedicated 120 V 20 amp maximum circuit for 120V mats must be GFCI protected unless a GFCI SunStat is used Ground Line 1 Black Black 120 VAC White Line 2 White Connecting two mats Ground Line 1 Black Black 120 VAC White Line 2 UnderFloor Mat maximum 15 amps 120 VAC SunStat Control Sensor Wire no polarity UnderFloor Mat maximum 15 amps 120 VAC SunStat Control
5. 2 if there are any questions regarding the installation of the mat or its related electrical components SunTouch UnderFloor mats are only intended for installation below the subfloor INSULATION MINIMUM R 13 i lt Subfloor UnderFloor mat with 2 air gap above the mat Floor joist Insulation Cross section of typical Shielded power leads make for a tougher and UnderFloor installation safer connection to the controls SunTouch UnderFloor Installation Manual 3 Designing a SunTouch UnderFloor System In general SunTouch UnderFloor should be installed in all floor areas where floor warming is desired It can be installed to either warm the floor or to heat the space If SunTouch is being installed to heat the space first perform a heat loss calculation Use RadiantWorks or a similar program to calculate the heat loss of the room s SunTouch can be expected to provide approximately 34 BTU hr sq ft of mat This assumes the mats are installed per this manual including the use of proper insulation techniques Make sure insu lation is installed as shown on page 10 There must be a dead air space for UnderFloor mats to be effective This output also assumes a floor covering other than carpet and pad The output will be greatly diminished with a carpet floor covering and or the lack of proper insulation Determine how much Mat is Needed for the Installaton To determine how much
6. Ayiuejod ou SAI 10SU S Two or more120 VAC maximum 15 amps UnderFloor Mat maximum 15 amps All electrical work must be done by a qualified licensed electrician in accordance with local building and electrical codes and the National Electrical Code NEC especially Article 424 Part IX of the NEC ANSI NFPA70 and Section 62 of CEC Part 1 PART 7 Troubleshooting Guide If problems arise with the SunTouch UnderFloor mat or its related electri cal components please consult this troubleshooting guide If not qualified to perform electrical work it is highly recom mended that a qualified licensed electri Any electrical troubleshooting work should be performed with the power removed from the circuit unless other wise noted Although this troubleshooting guide is provided to assist with problems expe system results are never guaranteed SunTouch does not assume any liability or responsibility for damage or injury that may occur from using this guide If problems with the system persist call the manufacturer at 888 432 8932 cian be hired rienced with a SunTouch floor warming Solution Obtain a digital ohmmeter able to read 0 to 20 000 ohms and remeasure the resistance Possible Cause An analog ohmmeter using a moving needle was used to take the reading Problem Mat resistance measurement is outside the range printed on the nameplate label If measurement shows an open or short circuit Reco
7. L for open line A cut or pinch in the wire is indicated by a resistance value greater than zero but less than the mat resistance If the resistance is not correct or if the wire has been cut or damaged note the damaged area and call the factory for further instructions Checking the Floor Sensor The SunStat controls come with a floor sensor This must be tested prior to installation Use a quality digital ohmmeter that is capable of measuring at least 20 000 ohms Q and measure between the lead wires of the sensor The measurement varies according to the temperature sensed in the tip The sensor resistance table on page 6 gives a set of approximate values for comparison If no resistance is detected or if the resistance value is very different from that shown in the sensor resistance table check the ohmmeter first to make sure it was correctly set Then contact the factory for assistance MAT AND SENSOR RESISTANCE LOG Mat Serial Number Mat Size Mat Voltage Factory Mat Resistance Range OUT OF THE BOX BEFORE INSTALLATION ohms Mat black to white Mat black to green Mat white to green Sensor Wire AFTER SENSOR AND MAT ARE INSTALLED IN JOIST BAY ohms Mat black to white Mat black to green Mat white to green Sensor Wire AFTER INSULATION IS INSTALLED ohms Mat black to white Mat black to green Mat white to green Sensor Wire RETAIN THIS LOG TO RETAIN THE WARRANTY DO NOT DISCARD 6 Su
8. Progress Place Radiant Panel Association Springfield MO 65803 8816 888 432 8932 toll free phone E TM Certain electric floor heating components systems and devices shown in this document 417 522 6128 phone are patented under foreign and U S patents including numbers 6 303 905 6 300 598 and 417 831 4067 fax 5 908 573 Trademarks and U S Registered Trademarks and copyrighted material herein s are the property of Watts Radiant Inc and or client www suntouch com diy H H i SunTo ch Electric Radiant Floor Warming
9. ad the circuit breaker with no more than the following 12 amps ona 15 amp circuit breaker 16 amps ona 20 amp circuit breaker Additional circuit breakers will be required for larger loads than these Select mats so that no more than 15 amps are run through a SunStat control Large Systems on one Floor sensing Control Contact the factory for more infor mation on systems that are too large to directly power through one SunStat but must be operated by one floor sensing control Install Electrical Boxes SunStat box Decide on the location for the floor sensing control Usually this will be in the same room as the floor being warmed but it can be mounted almost anywhere as long as it is not in a confined space where airflow is restricted To reach this box with the mats the mat power leads and the sen sor wire leads can both be extended if needed with the appropriate size wire at a junction box The control electrical box may be a single gang plastic deep box but be sure to follow all electrical code require ments for box fill grounding etc when determining the correct box for a par ticular application The control box should be located on interior walls typically 50 to 60 from the floor according to code requirements NOTE The SunStat sensor wire can be up to 50 ft long extended with 22 or 24 AWG wire Other junction boxes It is highly UnderFloor Mat Sizes Amperage Draw and Resistance Ranges A
10. e control box and junction box Refer to the wiring diagrams in Part 6 for assistance Install SunStat Sensor A floor sensor comes with the SunStat control and must be installed correctly to control the floor tempera ture Remember to locate the sensor in a floor where a mat is located The fol lowing are recommended methods for installing the sensor Other equivalent methods may be used Before installing the sensor make sure to test it with an ohmmeter See page 5 Checking the Floor Sensor Method 1 Since a sensor may be difficult to install in some existing floors the sensor may be placed under the subfloor However keep in mind that the temperature the sensor gives will not be a true floor surface temperature and the floor sensing control may need to be adjusted accordingly Drill a hole through the bottom plate of the wall to route the sensor wire Feed the sensor wire down from the control box through the floor A fish tape may need to be used in order to do this The most accurate method is to drill a 3 4 1 long hole at an angle into the bottom of the subfloor drilling at an angle prevents puncturing through floor surface Locate this hole in a joist bay directly over where a mat will be installed about 2 from the joist Insert the sensor into the angled hole and seal it with adhesive Insulate the sensor with additional blueboard or fiberglass insulation 1 2 thick and 6 square
11. e of carpet carpeted floors may not achieve the same temperature rise The floor may or may not achieve this tem perature rise and no representations are made regarding the performance of any system For best results install unfaced fiber glass R 19 or R 13 or equivalent below the mat Do not insulate below the mat with more than R 19 and no more than R 11 total on top of the subfloor including all floor coverings rugs and other items placed on top SunTouch UnderFloor can be used to heat a room as well as warm the floor provided the heat loss of the room falls within the mat s capabilities A designer must determine if the out put from the SunTouch UnderFloor is Shielded power lead enough to match the heat loss of the structure Refer to page 3 for helpful design guidelines The SunTouch UnderFloor Mat The mat is composed of a heating cable a foil radiator to make a radiant surface and a set of power leads for connection to the floor sensing control These mats are manufactured in sizes suitable to heat joist bays spaced 16 on center Mats are rated 120 VAC Select the mat length to fit into the joist space available Multiple mats can be used to fill a larger area however they must be wired together in parallel not in series if they are to be connected to the same control NEVER supply 120 VAC mats with 240 VAC Visit the SunTouch Web site at www suntouch com diy or call 888 432 893
12. here it is easily noticed in the area containing the mat ALWAYS seek help if a problem arises If ever in doubt about the correct installation procedure to follow or if the product appears to be damaged the factory must be contacted before proceeding with the installation Please visit www suntouch com diy or call the Design Department at 888 432 8932 if there are any questions or problems regarding the installation of the mat or its related electrical components If the product appears to be damaged the factory must be contacted before proceeding with the installation or proposed repair SunTouch UnderFloor Installation Manual 5 PART 1 Inspect the Mat and Sensor Monitor the Wire Throughout the installation process it is very important to take resistance readings of the mat and floor sensor wires to make sure they have not been damaged Use a quality digital ohmmeter multi meter able to mea sure up to 20 000 ohms Q to take these readings Analog meters with the moving needle are not accurate enough for this product Essential Product Information and Warranty Do not remove the nameplate label from the power leads see photo Record the serial number mat size volt age and mat resistance range into the resistance log below for each mat and ate a tr To retain the Limited Warranty resistance read ings and other data MUST be recorded in the Mat and Sensor Resistance Log below Record the informat
13. ion from this nameplate label into the Mat and Sensor Resistance Log provided at right Leave this nameplate label attached to the power leads for later inspection Q a Naaa Radiant Floor Heating Mat D l Aming ARISA OT GIG lE SMO lectric wiring and heating panels l l l contained below the floor l Do not penetrate floor with nails screws Or similar devices This Electric Radiant Heating Warning Label must be cut out and taped near or on the face of the control sensor wire To retain the Limited Warranty these items and the following resistance measurements MUST be recorded as well as all steps of this manual followed Refer now to the Limited Warranty on our web site for complete requirements Measurements At the very least take resistance read ings 1 before beginning installation 2 after the mat and sensor have been installed in the joist bay and 3 after insulation is installed Checking for Breaks Measure resistance between the black and white leads and record this below This measurement should be within the range shown on the name plate label A cut or break in the wire is indicated by a resistance of infinite ohms no continuity or OL for open line Checking for Short Circuits Measure resistances between the black and green leads and between the white and green leads and record these below These measurements should be infinite ohms no continuity or O
14. l gt Touch eet SUNIO Underfloor Do it Yourself e CONTENTS _ Introducing SunTouch UnderFloor Materials and Cautions PART 1 _ Inspect the Mat and Sensor PART2 Electrical Service Rough in PART 3 Install the Mat PART 4 Final Wiring PART 5 Install the Insulation PART 6 Wiring Diagrams PART 7 Troubleshooting Guide _ SPANISH VERSION on page 13 Pm A ee aa ww denteech temials 888 432 8932 e UL us 2 SunTouch UnderFloor Installation Manual Introducing SunTouch UnderFloor SunTouch UnderFloor is a safe and efficient electric floor warming prod uct for interior applications It is intend ed only for installation under a wood subfloor in residential and light com mercial installations It is not designed for other purposes such as roof snow melting Any use or installation of this product other than what is stated in this installation manual will void the Limited Warranty SunTouch UnderFloor is designed to deliver approximately 10 watts sq ft of floor area The temperature of the warm floor is dependent on how well the floor is insulated as well as the insu lating value of the flooring materials If the joist space is sealed against air leakage exterior rim joists are insulated and the underneath side of the floor is insulated most floors can be heated up to 15 F warmer than they would otherwise be Due to the insulating valu
15. l above 1 0 SunTouch UnderFloor Installation Manual PART 4 Final Wiring Install the Control Install the control s for the mats according to the wiring diagrams pro vided with the controls Connect the power supply leads the power drop to the mat junction box and the floor sensor wire to the SunStat Follow proper wiring procedures It is a good idea to overwrap the wire nuts with electrical tape to further secure the wires into the wires nuts before pushing the control back into the electrical box Test the System After the controls are installed and connected energize the system briefly to test operation of all components Refer to the installation sheets pro PART 5 Install the Insulation Install R 13 to R 19 fiberglass insula tion below the mat Gently press the insulation up to the mat for best results and secure in place with rods staples or other method A gap between the insulation and mat is acceptable but will not give the best heating results Make sure to insulate at the end of all heated joist cavities Install insula tion vertically in these areas to seal the ends of the heated joist areas or 6 after the mat stops in a joist space push the insulation up tight against the subfloor and staple to the subfloor This ensures that no heated air can escape from the heated joist space If this is not done much heat will escape horizontally through band joists rim joists exterior
16. mat is needed take one of two approaches 1 For a rough estimate multiply the wall to wall area by 75 80 Convert this to linear feet of mat and select from the lengths of mat shown in the table on page 6 2 For an accurate measurement look under the subfloor to see where mats can be stapled Looking care fully at each joist bay measure the length of open area in that bay that can receive a mat and select the mat from the table on page 6 that fits the space Remember that these mats cannot be UnderFloor mats Install mats 2 below subfloor Insulated at ends Areas with ductwork or piping may not allow mat Insulated underneath mat Insulated around outside of area cut shorter to fit nor modified in any way to fit multiple joist bays Do not include in these measurements areas that contain items that would obstruct installation of the mat return air ducts supply ducts light fixtures etc Where mats are not installed the floor above will not get very warm Wiring Multiple Mats Together Each mat is designed to be installed in only one joist bay The mats cannot be cut shorter to fit a shorter joist bay or modified in any way to fill multiple joist bays However more than one mat may be installed in a joist bay where there are barriers such as cross bracing A typical installation is shown below Since several mats will be required to warm the floor area the mats must be wired together in parallel n
17. mperage Resistance Mat Size Draw Range ohms 120 VAC 16 x 4 ft 0 4 258 315 16 x 6 ft 0 6 173 211 16 x 8 ft 0 8 126 154 16 x 9 5 ft 1 0 101 123 16 x 12 ft 1 3 82 101 16 x 14 ft 1 5 69 85 recommended that a separate steel electrical junction box be mounted below the subfloor or in the wall in a location to which the mat power leads can be routed A separate wiring drop can be made from the control box down to this junction box This makes it much easier to install the system These boxes must remain accessible not behind a cabinet or above a drywall ceiling etc Floor Sensor Resistance Values Temperature Typical Values 55 F 13 C 17 000 ohms 65 F 18 C 13 000 ohms 75 F 24 C 10 000 ohms 85 F 29 C 8 000 ohms Floor surface IIIN R L B aa Floor joist Bead of construction adhesive Minimum 1 thick insulation SunTouch UnderFloor Installation Manual 7 Angled hole drilled for floor sensor Sensor tip Insulation 6 square Diagram showing Method 1 for installing the floor sensor into the subfloor Bottom Plate Work Drill a hole up through the wall bottom plate to route the power wir ing from the SunStat control box to the mats below the floor Rough in Wiring Install electrical wiring from the power source breaker to the SunStat control electrical box and then to the junction box below the floor for the mat leads Leave 6 8 of extra wire at th
18. nTouch UnderFloor Installation Manual PART 2 Electrical Service Rough in Circuit Overcurrent Protection and GFCI Protection The SunTouch mat must be pro tected by a ground fault circuit inter rupter GFCI If the mats are directly powered through the SunStat controls these already have an integral GFCI to protect the mats do not install a GFCI type circuit breaker to supply a SunStat Control because the respective GFCls may conflict and cause problems Ifa different type control or relay is used that does not have a built in Class A GFCI an indicating type GFCI circuit breaker must be used to protect the mats This GFCI breaker serves as a local disconnect NOTE Follow all local building and electrical codes It is recommended that the system be installed on its own dedicated cir cuit directly from the circuit breaker panel However small systems may be able to tap into an existing circuit Consult an electrician Make sure there is adequate capacity for the mat s as well as any other items that may use this circuit The mat s should not be installed in a circuit with another GFCI breaker or outlet lighting circuit low voltage halogen or other types that use ballasts or transformers that can interfere or motor circuit exhaust fan hot tub etc due to possible interfer ence which can cause the GFCI on the control to false trip The circuit breaker protecting the mat s must be no larger than 20 amps Lo
19. nsor is loose or broken above Turn circuit breaker off then on to reset the SunStat Loose connection s on line side and or load side of control Remove and reinstall the wire nuts at each connection Make sure the wire nuts are tight Check all connections back to the breaker No power is supplied Check circuit breaker Measure voltage at the control Check all connections between breaker and control Control is not working at all Floor sensor is not wired properly or is not working properly The control can only read the signal from a single floor sensor Make sure only one floor sensor is connected to the control Also see Sensor is loose or broken above Defective control Return control to dealer for replacement More than one GFCI on the circuit GFCI units will sometimes trip when there is nothing wrong with the equipment on the circuit but when there is more than one GFCI on the same circuit Reroute power to avoid having more than one GFCI on the circuit GFCI conflicts and false trips Loose wiring connection s Remove and reinstall the wire nuts at each connection Make sure the wire nuts are tight Check all connections back to the breaker Electric motors and other electrical devices can cause a GFCI to false trip Run a dedicated circuit to the floor warming system An electric motor or a ballasted light source is sharing the circuit with the control Charter Member sate RPA 4500 E
20. ot in series at a junction box below the floor then electrical wire fed from there up to the floor sensing control box Select mats for the easiest wiring possible If all the power leads end up at one end of the room it will be much easier to wire them together in the junction box The junction box must be accessible after all finishing work is completed Be sure to position the mats so that this is possible e 08 oo Meek Select Mats Select mats to fit from the Table on page 6 Total the mat Amperage Draw It this totals 15 amps or less it may con nect to one SunStat control If this totals more than 15 amps it must be split up on multiple SunStat controls Make sure the circuit breaker can handle the load Follow all electrical codes for determining the size of the breaker Floor sensing Controls To control the SunTouch UnderFloor system install either a SunTouch SunStat Pro or a SunStat Dial floor sensing control The sensor that comes with the control should be installed per instructions on page 7 Floor joist Cross bridging or blocks 4 SunTouch UnderFloor Installation Manual Materials and Tools Needed SunTouch UnderFloor mat s See e Floor sensor included with SunStat Digital ohmmeter multi meter able page 3 to determine how much mat is control to measure up to 20 000 ohms 9 needed for each joist space e SunTouch UnderFloor Installation Kit e Various electrical construction tools
21. rd resistance between all wires and contact the manufacturer the heating wire has been damaged If measurement is just a little low or high room_ Make the room temperature 75 85 F or contact the manufacturer temperature has affected the resistance The mat may be wired in series or daisy chained with another mat or may be wired in Make sure resistance measurements are for only one mat at a time Disconnect any other mats parallel with another mat Either will provide false resistance readings Measure mat resistance Check for both open circuit and short circuit as detailed earlier in this manual If damaged record resistances between all wires and contact the manufacturer Floor is not getting warm Mat heating wire has been damaged GFCI has tripped indicated by a light on the control and GFCI on display Check for loose wire connections Reset the GFCI on the control or circuit breaker If it trips again check for a short circuit in the mat as detailed earlier in this manual If mat is damaged record resistance between all wires and contact the manufacturer If mat is not damaged replace the GFCI control Also see GFCI conflicts below Incorrect voltage supplied or mismatched electrical components used Measure line voltage then measure load voltage Mats are wired in series or daisy chained end to end Multiple mats must be connected in parallel
22. t on top of another or overlap the mat onto itself Doing so will cause dangerous overheating NEVER forget to install the floor sensor NEVER remove the nameplate label NEVER allow metal objects such as staples metal pipes ductwork or straps to remain in contact with the foil radiator of the mat NEVER staple closer than 1 4 from the heating wire NEVER install the mat closer than 2 from the subfloor NEVER install the mat closer than 8 from the edges of outlet boxes and junction boxes used to mount surface lighting fixtures NEVER run mats across joists NEVER insulate below the mat with greater than R 19 and no greater than R 11 total on top of the subfloor including all floor coverings rugs and other items placed on top ALWAYS enter mat and sensor resistance readings in the Mat and Sensor Resistance Log see page 5 before during and after the installation process ALWAYS pay close attention to the voltage and amperage requirements of the breaker the control and the mat For instance do not supply 240 VAC to 120 VAC mats or controls ALWAYS make sure all electrical work is done by qualified persons in accordance with local building and electrical codes Section 62 of CEC Part I and the National Electrical Code NEC especially Article 424 Part IX of the NEC ANSI NFPA 70 ALWAYS use copper only as supply conductors ALWAYS affix the warning label included with this manual to the control or other location w
23. t s will be installed Measure the width of the mat selected to fit between these joists The difference where ductwork wiring or other items do not allow the mat to be installed Keep in mind that where mats are not installed the corresponding floor area above will not get very warm between these measurements deter mine how much mat mesh remains for stapling to each side of the joists Because the distance between floor joists can vary taking these measure ments will help ensure the mat will be centered between the joists It is also prudent to test fit the mat by holding the mat up into the joist cavity 4 To help hold up the power leads while installing the mat fasten one Before installing the mat inspect all NailTite over the power leads joists as well as the underside of the subfloor for nails screws or other sharp objects that protrude into the joist cav 2 If the mat begins near the rim joist a measure about 6 out from that rim 5 Hold the mat up along one joist joist This will allow enough room for and begin stapling the mat mesh along the mat power leads and will prevent the 2 mark from the subfloor Staple unnecessary heating of the wall cavity every 4 to 6 for about 2 ft to get above the floor started Test fit the mat between the joists before stapling the mat to the joists 6 At the other end of the mat place a nail into the joist at 2 below the sub floor Hang
24. the fiber mesh of the mat onto the nail This will make it much easier to staple the rest of the mat at 2 below the subfloor every 4 to 6 Then remove the nail at the end that held it up 8 Raise the mat to the other joist and staple the mat mesh 2 below the sub floor e k r 5 E a SunTouch UnderFloor Installation Manual 9 9 Using the same techniques staple up all other mats Power Lead Installation If not already done so mount a junc tion box below the subfloor within reach of the mat power leads Install more than one junction box if needed for larger jobs The junction box must remain accessible in accordance with electrical codes so consider the loca tion of the junction box carefully should the ceiling be finished after installation of the mat s Route the power leads from the mat s to the junction box following all electrical and building codes using conduit and additional electrical boxes where required For multiple mats follow all electri cal codes concerning box fill maxi mums Connect the leads in parallel black to black white to white and not in series Connect the mat leads to the power drop from the control electrical box Again do not overload the control The SunStat control must not be load ed with over 15 amps of mats a Junction box with multiple sets of mat lead wires connected in parallel and connected to the SunStat contro
25. the mat grams and must be removed cut off or bent Observe the following rules plus all flat against the underside of the sub other electrical building codes and the floor or the side of the joist s Cautions on Page 4 when installing the Do not staple cut or damage the mat s foiled heating portion of the mat in any way The fiber mesh of the mat is the portion that will be used to staple the mat to the joists Do not leave the mat rolled up or bunched up in any way in the joist bay Doing so will cause dangerous overheating and possible damage Mats must be installed so that they are completely flat across the joist cavity Do not allow the foil radiator of the mat to be mounted such that it contacts metal objects such as nails staples metal pipes heat ing ducts and joist straps 3 Measure 2 below the subfloor and mark the joists on both sides of the joist cavity Keep the mat at least 2 away from recessed fixtures lights etc ventilation openings and other openings Keep the mat at least 8 away from the edges of outlet boxes and junction boxes used to mount surface lighting fixtures Keep the mat at least 6 away from heat sensitive items such as toilet rings flexible ducting and other items rated less than 194 F 90 C Consult manufacturers of those items REMEMBER Pay careful attention to areas aoe n ae ps 1 Measure between the floor joists where ma
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