Table of Contents
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Installation & Operation Manual
Radiant Thermostat 519
Introduction
The Radiant Thermostat 59 accurately
controls the room and/or floor temperature
for a hydronic heating zone using Pulse
Width Modulation (PWM) technology.
Simple up and down buttons and a display
with large type make this thermostat easy
to read and use. A Floor Sensor 079 is
included to measure floor temperature
to protect the floor from overheating and
enhance comfort.
Energy Saving Features
•
Auto Heating Cycle
Additional Features
•
Radiant Floor Heating
•
Pulse Width Modulation
•
Floor & Air Temperature Control
•
Outdoor & Floor Temperature
Display
•
Backlight
•
Freeze Protection
•
Includes Floor Sensor 079
of 6
© 203 Watts Radiant
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Table of Contents
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Summary of Contents for Watts Radiant 519
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Page 1: Energy Saving Features
Installation & Operation Manual Radiant Thermostat 519 Introduction Energy Saving Features The Radiant Thermostat 59 accurately • Auto Heating Cycle controls the room and/or floor temperature for a hydronic heating zone using Pulse Width Modulation (PWM) technology. Simple up and down buttons and a display with large type make this thermostat easy to read and use. A Floor Sensor 079 is included to measure floor temperature to protect the floor from overheating and enhance comfort. Additional Features • Radiant Floor Heating • Pulse Width Modulation • Floor & Air Temperature Control • Outdoor & Floor Temperature Display • Backlight • Freeze Protection • Includes Floor Sensor 079 of 6 © 203 Watts Radiant... -
Page 2: Table Of Contents
It is your responsibility to ensure that this control is safely installed according to all applicable codes and standards. This electronic control is not intended for use as a primary limit control. Other controls that are intended and certified as safety limits must be placed into the control circuit. Watts Radiant is not responsible for damages resulting from improper installation and/or maintenance. Read this Manual BEFORE using this equipment. Failure to read and follow all safety and use information can result in personal injury, property damage, or damage to the equipment. Keep this Manual for future reference. Getting Started Congratulations on the purchase of your new thermostat. This manual will step through the complete installation, programming and sequence of operation for this control. At the back, there are tips for control and system troubleshooting. Table of Contents Installation ...........3 Sequence of Operation ......2 Preparation ........3 Heating Operation ......2 Removing The Thermostat Base ..3 Programmable Settings .....3 Mounting The Thermostat....4 Troubleshooting .........4 Floor Sensor 079 Installation ..5 Error Messages ......4 Floor Sensor 079 Wiring ....6 Frequently Asked Questions ..5 Floor Sensor 079 Testing ....7 Technical Data ......5 Temperature vs. Resistance Table ..7 Limited Warranty and Product Thermostat Wiring ......8... -
Page 3: Installation
Installation Preparation - - - -- --- -- -- - -- -- -- - - - - - - - - - - - - -- - -- -- - -- - -- -- - -- -- - - Tools Required •... -
Page 4: Mounting The Thermostat
Mounting The Thermostat Stud Adapter Plate Thermostat Base Thermostat " Front (83 mm) Gang If a single gang box is used: • Adapter Plate is required (sold separately). • Feed the wiring through the hole in the adaptor plate and the thermostat base. • Fasten the adaptor plate to the gang box. • Fasten the base of the thermostat to the adaptor plate. • Terminate wiring to the wiring strip. • Push the thermostat front onto the thermostat base. Thermostat Base Thermostat Front Wall If mounting directly to the wall: • Drill holes and install the wall anchors. • Feed the wiring through the large hole in the thermostat base. • Fasten the thermostat base to the wall using the wood screws to the wall anchors. • Terminate wiring to the wiring strip. -
Page 5: Floor Sensor 079 Installation
Floor Sensor 079 Installation - ------- - - - - - ---- - - - - - - - - - - - -- -- -- -- -- --- -- -- -- -- -- New Installations Thin-Set or Thin-Pour Applications If the floor covering is to be installed over either a thin-set or thin-pour material of sufficient depth, the floor sensor can be placed directly into either the thin-set material or the thin-pour material and covered over. -
Page 6: Floor Sensor 079 Wiring
- - - - - ---- - - - - - -- - - - - - - - - - - -- --- -- -- -- -- --- -- -- -- Retrofit Installations Tile Floor Coverings If a Floor Sensor 079 is to be installed into an existing tile floor with sufficiently large grout lines, the sensor and wire can be installed in one of the grout lines between the tiles. Select a low traffic area of the floor that is Tiles mid way between the heating elements for the Thin-set... -
Page 7: Floor Sensor 079 Testing
Floor Sensor 079 Testing A good quality test meter capable of measuring up to 5,000 kΩ ( kΩ = 000Ω) is required to measure the sensor resistance. In addition to this, the actual temperature must be measured with either a good quality digital thermometer, or if a thermometer is not available, a second sensor can be placed alongside the one to be tested and the readings compared. First measure the floor temperature using the thermometer. Disconnect the S and Com wires from the thermostat. Using an electrical meter, measure the resistance of the S and Com wires at the thermostat location. Using the temperature versus resistance table, estimate the temperature measured by the sensor. The sensor measurement and thermometer readings should be close. If the test meter reads a very high resistance, there may be a broken wire, a poor wiring connection or a defective sensor. If the resistance is very low, the wiring may be shorted, there may be moisture in the sensor or the sensor may be defective. To test for a defective sensor, measure the resistance directly at the sensor location. Once the test has been completed, reconnect the S and Com wires to the thermostat. Do not apply voltage to a sensor at any time as damage to the sensor may result. Temperature vs. Resistance Table Temperature Resistance Temperature Resistance °F °C °F °C 490,83 29,996 405,70 26,099 336,606 22,763 280,279 9,900 234,96 7,436 96,358... -
Page 8: Thermostat Wiring
Temperature vs. Resistance Table Continued Temperature Resistance Temperature Resistance °F °C °F °C 3,760 ,28 3,383 ,72 3,050 ,073 2,754 2,490 2,255 2,045 ,857 ,689 ,538 ,403 Thermostat Wiring - - -- ---- - -- - - - - ----- - - - - - - - - - - - - - - - - -- -- -- -- --- -- -- -- -- -- Zone Valve Install field Zone... - Page 9 - - - - - - - - - - - -- - -- -- - -- -- - -- - -- -- - - 24-Volt Master Zone Control Module Install field jumper wire R to Rh Floor Sensor 079 No Power No Power Rh W1 S1 Rh W1 S1 24-Volt Master Zone Control Module for 4 Volt Actuators...
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Page 10: Testing The Thermostat Wiring
-- -- --- - -- -- -- - -- - - - - - - - - - - - - - - -- -- - -- -- - -- - -- -- - -- - Switching Relay Floor No Power No Power Sensor 079 Rh W1 S1... -
Page 11: User Interface
User Interface Home Screen Symbols Description HEAT ON Heat is turned on. The floor is at or below the floor minimum temperature. MODE OFF The heating system is off. The floor has reached the WARNING SyMBOL floor maximum temperature. Indicates an error is present. of 6 © 203 Watts Radiant... -
Page 12: Sequence Of Operation
Sequence of Operation Heating Operation To change the heat temperature setting, push the or button to select a preferred temperature setting. The Heat On symbol is shown on the display when the thermostat is heating. The heat can cycle on and off within +/- .5°F (°C) of the temperature setting. The floor and air heating can be shut off by holding the button until Set Room is Off. To resume heating when the Mode is Off, press the button to navigate to the Mode setting, then press the button to select Mode Heat. The thermostat will resume heating at the last previously set temperature. - - - ----- - - - - -- - - - - - - - - - - - -- -- --- -- -- -- -- --- -- -- Air Temperature Only If there is only an air temperature sensor (no floor sensor), the thermostat operates to control your desired air temperature. -
Page 13: Programmable Settings
Programmable Settings Setting Display User settings. Press the and buttons together for 3 seconds to enter and advance to the next setting. MODE Select heat or off. Range: HEAT, OFF Default: HEAT UNITS Select the temperature units. Range: °F or °C Default: °F LIGHT Select when the display back light should operate. Auto operates the backlight for 30 seconds after a keystroke. Range: OFF, AUTO, ON Default: AUTO SET FLOOR Set the floor minimum temperature. Available when an auxiliary floor sensor is connected and the built-in room sensor is on. Range: OFF, 40 to 22°F (4.5 to 50.0°C) Default: 72°F (22.0°C) TyPE... -
Page 14: Troubleshooting
Troubleshooting Error Messages Error Message Description SETUP MENU SAVE ERROR The thermostat failed to read the Programmable Settings from memory and has reloaded the factory default settings. The thermostat stops normal operation until all Programmable Settings are checked except to provide freeze protection. ROOM SENSOR OPEN CIRCUIT ERROR The built-in air temperature sensor has an open circuit fault. Do not confuse this error with the auxiliary room sensor short circuit error. Room This error cannot be field repaired. Contact your wholesaler or Watts Radiant sales representative for details on repair procedures. ROOM SENSOR SHORT CIRCUIT ERROR The built-in air temperature sensor has a short circuit fault. Do not confuse this error with the auxiliary room sensor short circuit error. Room This error cannot be field repaired. Contact your wholesaler or Watts Radiant sales representative for details on repair procedures. AUxILIARy SENSOR OPEN CIRCUIT ERROR The auxiliary sensor has an open circuit. Check for loose or damaged wires. Locate and repair the problem as described in the Sensor Testing section of this brochure. The error clears... -
Page 15: Frequently Asked Questions
The power supply transformer Measure voltage at Display powering may have limited VA capacity. A wiring terminals R on and off. transformer with a larger VA rating is and C. recommended. Thermostat does Thermostat must be in Mode Heat in Mode Off not heat. order to provide heating. Technical Data Radiant Thermostat 519 Air/Floor, Digital, 24V, incl floor sensor 079 IOM-WR-Radiant_Thermostat-59, PG-WR-Radiant_Thermostat-59, Literature ES-WR-Radiant_Thermostat-59, IS-WR-Radiant_Thermostat-59 Control Microprocessor control. This is not a safety (limit) control Packaged weight 0.6 lb. (270 g) Dimensions 3-/6” H x 3” W x 5/6” D (94 x 76 x 24 mm) Enclosure White PVC plastic, NEMA Type Approvals Meets Class B: ICES & FCC Part 5 Indoor use only, 32 to 22°F (0 to 50°C), RH ≤90% non-... - Page 16 Hydronic System Electronic Controls and Thermostats Limited Warranty Watts Radiant (the Company) warrants its hydronic system electronic controls and thermostats (the Product) to be free from defects in materials and workmanship under normal usage for a period of one year from the documented date of installation of the Product. In the event of defects within the warranty period, the Company will replace the Product without charge. This remedy is the sole and exclusive remedy for breach of warranty. This warranty is transferable to subsequent owners. Under this Limited Warranty, the Company will provide the following: In order to make a claim, you must: (a) Provide the Company with sufficient details relating to the nature of the defect, the installation, the history of operation, and any repairs that may have been made. (b) At the Company’s discretion and at the owner’s expense, ship the Product to the Company or the Company’s local representative or distributor. (c) Provide proof that the Product was installed in accordance with the applicable Product Installation Manual and any special written design or installation guidelines by the Company for this project. (d) Provide proof that the Product was installed in accordance with the National Electrical Code (NEC) or the Canadian Electrical Code (CEC), and all applicable local building and electrical codes. (e) Provide a retail sales receipt or proof of purchase. The following are not covered by this Limited Warranty: (a) Any incidental or consequential damage, including inconvenience, loss of time or loss of income. (b) Any labor or materials required to repair or replace the Product that are not authorized in writing by the Company. (c) Any labor or materials required to remove, repair or replace materials other than the Products. (d) Any freight or delivery costs related to the Product or any related electrical products. Watts Radiant assumes no responsibility under this Limited Warranty for any damage to the Product caused by any trades people, visitors on the job site, or damage caused as a result of post-installation work. This Limited Warranty shall be invalidated by any abuse, misuse, misapplication or improper installation of the Products. The staff at the Company is available to answer any questions regarding the proper installation or application of the Product at this toll-free phone number: 800-276-249 (USA/International) or 888-208-8927 (Canada). If you are...
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