Watts 519 Installation & Operation Manual

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Watts 519 Installation & Operation Manual | Manualzz

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Radiant Thermostat 519

Installation & Operation Manual

Introduction

The Radiant Thermostat 519 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

IOM-WR-Radiant_Thermostat 1612

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

Preparation .....................................3

Removing The Thermostat Base ....3

Mounting The Thermostat ...............4

Floor Sensor 079 Installation ..........5

Floor Sensor 079 Wiring .................6

Floor Sensor 079 Testing ................7

Temperature vs. Resistance Table ....7

Thermostat Wiring ..........................8

Testing the Thermostat Wiring ......10

User Interface .................................... 11

Home Screen ................................11

Symbols Description .....................11

Sequence of Operation ......................12

Heating Operation .........................12

Programmable Settings .....................13

Troubleshooting .................................14

Error Messages ............................14

Frequently Asked Questions .........15

Technical Data ..............................15

Limited Warranty and Product

Return Procedure .........................16

IOM-WR-Radiant_Thermostat 1612 2 of 16

Installation

Preparation

Tools Required -----------------------------------------------------

• Jeweller screwdriver • Wire Stripper

• Phillips head screwdriver

Materials Required -------------------------------------------------

• 18 AWG LVT Solid Wire

(Low Voltage Connections)

Installation Location ------------------------------------------------

Choose the placement of the thermostats early in the construction process to enable proper wiring during rough-in.

Consider the following:

• Interior Wall.

• Keep dry. Avoid potential leakage onto the control.

• Relative Humidity less than 90%. Non-condensing environment.

• No exposure to extreme temperatures beyond 32-122°F (0-50°C).

• No draft, direct sun, or other cause for inaccurate temperature readings.

• Away from equipment, appliances, or other sources of electrical interference.

• Easy access for wiring, viewing, and adjusting the display screen.

• Approximately 5 feet (1.5 m) off the finished floor.

• The maximum length of wire is 500 feet (150 m).

• Strip wire to 3/8" (10 mm) for all terminal connections.

• Use standard 4 conductor, 18 AWG wire.

Removing The Thermostat Base

To remove the thermostat base:

• Locate the tab on the bottom of the thermostat.

• Push the tab with either your thumb or with a screwdriver.

• Lift the thermostat front away from the thermostat’s base.

3 of 16 © 2016 Watts Radiant

Mounting The Thermostat

Stud

Thermostat

Front

Thermostat

Base

Adapter Plate

3 1 / 4 "

(83 mm)

Gang

Box

If a single gang box is used:

• Adapter Plate is required (sold separately).

• Feed the wiring through the hole in the adapter plate and the thermostat base.

• Fasten the adapter plate to the gang box.

• Fasten the base of the thermostat to the adapter plate.

• Terminate wiring to the wiring strip.

• Push the thermostat front onto the thermostat base.

Thermostat

Front

Thermostat

Base

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.

• Push the thermostat front onto the thermostat base.

IOM-WR-Radiant_Thermostat 1612 4 of 16

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.

Ensure that the sensor is located in such a position that the attached wire is able to reach to a suitable junction location. Splices within the thin-set or thin-pour should be avoided to ensure trouble free operation. The sensor should be located mid way between the heating elements to ensure a proper temperature reading.

Thin-set

Electric

Cables

Tiles

Thin Floor Coverings (less than 3/8" (10 mm))

If a thin floor covering is to be installed directly to the subfloor, a groove 1/8” (4 mm) wide by 1/16” (2 mm) deep can be cut into the surface of the subfloor to accommodate the wire for the sensor. Ensure that the sensor is located in such a position that the attached wire Hardwood is able to reach to a suitable junction location.

Splices under the floor covering should be avoided to ensure trouble free operation. A groove 3/16"

(5 mm) wide by 3/16" (5 mm) deep by 1-3/4"

(45 mm) long should be cut to accommodate the sensor. The sensor should be located mid way between the heating elements to ensure a proper temperature reading.

Subfloor

Thick Floor Coverings (greater than 3/8" (10 mm))

If a thick floor covering is to be installed directly to the subfloor, a groove 1/8" (4 mm) wide by 1/16" (2 mm) deep can be cut into the back of the flooring material to accommodate the wire for the sensor. Ensure that the sensor is located in such a position that the attached wire is able to reach to a suitable junction location.

Splices under the floor covering should be avoided to ensure trouble free operation. A groove 3/16"

(5 mm) wide by 3/16" (5 mm) deep by 1-3/4" (45 mm) long should be cut to accommodate the sensor. The sensor should be located mid way between the heating elements to ensure a proper temperature reading.

Hardwood

Subfloor

If it is not practical to cut a groove in the surface covering, follow the installation method used for thin floor coverings.

5 of 16 © 2016 Watts Radiant

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 mid way between the heating elements for the

Thin-set

Tiles sensor location. Ensure that the sensor is located in such a position that the attached wire is able to reach to a suitable junction location. Splices within the grout should be avoided to ensure trouble free operation. Remove the appropriate grout line and place the sensor and wire in the floor. Re-grout the area.

Subfloor

Installing the Sensor to the Bottom of a Subfloor

If the sensor is to be installed to the bottom of a subfloor, cut a piece of 1" (25 mm) thick rigid insulation into a 6" (150 mm) by 6"

(150 mm) square. A groove 3/16" (5 mm) wide by

3/16" (5 mm) deep by 1-3/4" (45 mm) long should be cut into the insulation to accommodate the sensor. Place the sensor in the groove and

Subfloor sandwich the sensor between the insulation and the subfloor. Use a suitable fastening method to affix the insulation to the subfloor.

Do not run sensor wires parallel to telephone or power cables. If the sensor wires are located in an area with strong sources of electromagnetic interference, shielded cable or twisted pair should be used or the wires can be run in a grounded metal conduit. If using shielded cable, the shield wire should be connected to the Com terminal on the control and not to earth ground.

Floor Sensor 079 Wiring

The Floor Sensor 079 is supplied with 10' (3 m) of cable. If a longer length is required, 24 AWG or larger wire can be spliced onto the two wires from the sensor.

The splices should be properly soldered and protected in an accessible junction box. Follow the sensor testing instructions given in this brochure and then connect the wires to the control.

IOM-WR-Radiant_Thermostat 1612 6 of 16

Floor Sensor 079 Testing

A good quality test meter capable of measuring up to 5,000 kΩ (1 kΩ = 1000Ω) 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 S1 and

Com wires from the thermostat. Using an electrical meter, measure the resistance of the S1 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 S1 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

°F

-50

-45

-20

-15

-10

-5

-40

-35

-30

-25

10

15

0

5

20

25

30

°C

-46

-43

-29

-26

-23

-21

-40

-37

-34

-32

-18

-15

-12

-9

-7

-4

-1

Resistance

490,813

405,710

336,606

280,279

234,196

196,358

165,180

139,402

118,018

100,221

85,362

72,918

62,465

53,658

46,218

39,913

34,558

7 of 16

Temperature

°F °C

35

40

65

70

75

80

45

50

55

60

85

90

95

100

105

110

115

2

4

18

21

24

27

7

10

13

16

29

32

35

38

41

43

46

Resistance

29,996

26,099

22,763

19,900

17,436

15,311

13,474

11,883

10,501

9,299

8,250

7,334

6,532

5,828

5,210

4,665

4,184

© 2016 Watts Radiant

Temperature vs. Resistance Table Continued

Temperature

°F

120

125

130

135

140

145

150

155

160

165

170

°C

60

63

66

49

52

54

57

68

71

74

77

Resistance

3,760

3,383

3,050

2,754

2,490

2,255

2,045

1,857

1,689

1,538

1,403

Temperature

°F °C

175

180

185

190

195

200

205

210

215

220

225

91

93

96

79

82

85

88

99

102

104

107

Resistance

1,281

1,172

1,073

983

903

829

763

703

648

598

553

Thermostat Wiring

Zone Valve ---------------------------------------------------------

Zone

Valve

Install field jumper wire

R to Rh

R

No Power

Rh W1 S1 Com

Floor

Sensor 079

24 V (ac)

Transformer

R C

L N

IOM-WR-Radiant_Thermostat 1612 8 of 16

Watts Radiant Zone Valve Actuator Control --------------------------

Install field jumper wire

R to Rh

Floor

Sensor 079

R Rh W1 S1 Com

1 4 2

Watts Radiant Zone

Valve Actuator Control

Relay --------------------------------------------------------------

5

6

3

4

Relay

2

1

8

7

Install field jumper wire

R to Rh

R C

R Rh W1 S1 Com

Floor

Sensor 079

N G

115 V (ac)

Transformer

9 of 16 © 2016 Watts Radiant

Switching Relay ----------------------------------------------------

R

No Power

Rh W1 S1 Com

Floor

Sensor 079

24 V

Com

Class 2

Transformer

X X

R W R W

Zone 1 Zone 2

R W

Zone 3

Switching Relay

Zone 1

H N

Zone 2

H N

Zone 3

H N N H

Pump

N L

Testing the Thermostat Wiring

Testing the Power --------------------------------------------------

If the thermostat display turns on, this indicates that the thermostat is operating correctly and there are no electrical issues. In the event that the display is permanently off:

1. Remove the thermostat front.

2. Use an electrical meter to measure voltage between the R and C wiring terminals. For AC power supplies the voltage should measure between 10 to

30 V (ac). For DC power supplies the voltage should measure between 10 to

30 V (dc).

3. If the voltage on the R and C wire terminations is continuous and the thermostat display is not on, the thermostat may have a fault. Contact your

Watts Radiant sales representative for assistance.

If the thermostat display initially powers on but later shuts off intermittently, there may be a short circuit from the W1 wire to ground, or the power supply is too small to power the load.

Testing the Heat Zone Output Wiring ---------------------------------

1. Touch the button and set the heating temperature above the current room temperature. Make sure the display does not flash “Max” if using a floor sensor.

2. When the “Heat On” symbol appears on the display, use an electrical meter to check for voltage on the W1 and C wires connected to the zone valve, wiring center, relay or switching relay. The electrical meter should read 10 to

30 V (ac) or (dc).

3. If the W1 and C wire have voltage, check the zone valve, wiring center, relay or pump to determine if the heat device is operating correctly.

IOM-WR-Radiant_Thermostat 1612 10 of 16

User Interface

Home Screen

Symbols Description

HEAT ON

Heat is turned on.

MODE OFF

The heating system is off.

WARNING SYMBOL

Indicates an error is present.

MIN

The floor is at or below the floor minimum temperature.

MAX

The floor has reached the floor maximum temperature.

11 of 16 © 2016 Watts Radiant

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 +/- 1.5°F (1°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.

Floor Temperature Only ---------------------------------------------

If the air sensor has been disabled, the thermostat will only maintain floor temperature and ignore air temperature. This operation is recommended for areas such as bathrooms to ensure that tile floors are warm to the touch.

Floor and Air Temperature ------------------------------------------

If the air sensor is turned on and a floor sensor is connected, the thermostat will maintain the desired air temperature as well as a minimum floor temperature.

This operation is recommended for areas with large windows that allow the sun to shine into a room and keep it warm without the need for heat. This can allow the floors to cool off during the afternoon. When the sun goes down, it can take a long time for the floors to get warm again. This may cause the room to cool off too much in the early evening. A floor minimum setting can help with this condition by maintaining a floor minimum temperature. Keep in mind the floor minimum temperature will override the air temperature, and if set too high, may overheat the room.

This operation is also recommended for rooms with hardwood floors. Setting floor minimum and maximum temperatures is a way of enhancing the comfort of the living space while protecting floor coverings.

90°F (32°C)

Feels hot to the touch

80 to 85°F (26 to 30°C)

Feels warm to the touch

70°F (21°C)

Feels cool to the touch

Suggested maximum for all floor types other than wood.

Bathrooms and kitchens. Suggested maximum for wood floors.

Rooms with large windows preventing under heating in the evening.

40 to 45°F (5 to 7°C)

Feels cold to the touch

IOM-WR-Radiant_Thermostat 1612

Freeze protection for garages.

12 of 16

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

UNITS

Select the temperature units.

Default: HEAT

Range: °F or °C

LIGHT

Select when the display back light should operate. Auto operates the backlight for 30 seconds after a keystroke.

Range: OFF, AUTO, ON

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 122°F (4.5 to 50.0°C)

TYPE

Device Type number. Hold the button to view the software version.

ESCAPE

Release the and buttons to return to the home screen.

Default: °F

Default: AUTO

F

Default: 72°F (22.0°C)

Installer settings. Press the and buttons together for 5 more seconds.

AUXILIARY SENSOR

Select the type of auxiliary sensor. Available when an auxiliary sensor is automatically detected.

Range: NONE = no auxiliary sensor, ROOM = Indoor

Sensor, FLOR = Slab Sensor, OUT = Outdoor Sensor

ROOM SENSOR

Select if the built-in room temperature sensor is on or off. The built-in room sensor can only be disabled when an auxiliary room or slab sensor is connected.

Default: OFF

Room

Range: ON or OFF

SET FLOOR MAXIMUM

Set the floor maximum temperature in order to protect the floor covering. Suggested settings: Tile = 90°F (32°C), Wood

Floor = 85°F (29°C)

Range: 40 to 122°F (4.5 to 50.0°C), OFF

ESCAPE

Release the and buttons to return to the home screen.

Default: ON

MAX

F

Default: 85°F (29.5°C)

13 of 16 © 2016 Watts Radiant

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

Room

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.

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.

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 after the auxiliary sensor fault is corrected. If the auxiliary sensor was intentionally removed, power the thermostat down and up to clear the error.

AUXILIARY SENSOR SHORT CIRCUIT ERROR

The auxiliary sensor has a short circuit. Check for damaged wires. Locate and repair the problem as described in the Sensor

Testing section of this brochure. The error clears after the auxiliary sensor fault is corrected.

IOM-WR-Radiant_Thermostat 1612 14 of 16

Frequently Asked Questions

Symptom Look for...

Display powering on and off.

Measure voltage at wiring terminals R and C.

Thermostat does not heat.

Mode Off

Corrective Action

The power supply transformer may have limited VA capacity. A transformer with a larger VA rating is recommended.

Thermostat must be in Mode Heat in order to provide heating.

Technical Data

Radiant Thermostat 519 Air/Floor, Digital, 24V, incl floor sensor 079

Literature

IOM-WR-Radiant_Thermostat, PG-WR-Radiant_Thermostat,

ES-WR-Radiant_Thermostat, IS-WR-Radiant_Thermostat

Control

Packaged weight

Microprocessor control. This is not a safety (limit) control

0.6 lb. (270 g)

Dimensions

Enclosure

3-11/16" H x 3" W x 15/16" D (94 x 76 x 24 mm)

White PVC plastic, NEMA Type 1

Approvals Meets Class B: ICES & FCC Part 15

Ambient conditions Indoor use only, 32 to 122°F (0 to 50°C), RH ≤90% non-condensing

Power supply

10 to 30 V (ac/dc), 50/60 Hz, 1.8 VA standby,

56 VA max fully loaded, Class 2

Relay

Sensor

– Included

30 V (ac/dc) 2 A, Class 2 circuits

NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892

Floor Sensor 079

Floor Sensor 079 , extra

Packaged weight 0.1 lb. (50 g)

Dimensions

Sensor Material

Approvals

Operating range

Sensor

3/16” OD x 1-1/2” (5 mm OD x 38 mm)

316 stainless steel, 10’ (3 m) 24 AWG, 300 volt PVC insulated Zipcord

CSA C US

-58 to 221°F (-50 to 105°C)

NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892

All specifications are subject to change without notice

15 of 16

WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

For more information: Watts.com/prop65

© 2016 Watts Radiant

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: 800-276-2419 (USA/International) or 888-208-8927 (Canada). If you are ever in doubt about the correct installation procedure to follow, or if the Product appears to be damaged, you must call us before proceeding with the installation or proposed repair.

WATTS RADIANT DISCLAIMS ANY WARRANTY NOT PROVIDED HEREIN, INCLUDING ANY IMPLIED WARRANTY

OF MERCHANTABILITY OR IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE. WATTS

RADIANT FURTHER DISCLAIMS ANY RESPONSIBILITY FOR SPECIAL, INDIRECT, SECONDARY, INCIDENTAL,

OR CONSEQUENTIAL DAMAGES ARISING FROM OWNERSHIP OR USE OF THIS PRODUCT, INCLUDING

INCONVENIENCE OR LOSS OF USE. THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE FACE OF

THIS DOCUMENT. NO AGENT OR REPRESENTATIVE OF WATTS RADIANT HAS ANY AUTHORITY TO EXTEND

OR MODIFY THIS WARRANTY UNLESS SUCH EXTENSION OR MODIFICATION IS MADE IN WRITING BY A

CORPORATE OFFICER.

Some states/provinces do not allow the exclusion or limitation of incidental or consequential damages and some states/provinces do not allow limitations on how long implied warranties may last. Therefore, the above limitations or exclusions may not apply to you. This warranty gives you specific legal rights and you may also have other rights, which vary from state to state or province to province. SO FAR AS IS CONSISTENT WITH APPLICABLE

STATE/PROVINCIAL LAW, ANY IMPLIED WARRANTIES THAT MAY NOT BE DISCLAIMED, INCLUDING IMPLIED

WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED IN DURATION

TO ONE YEAR FROM THE DATE OF MANUFACTURE.

Effective: May 1, 2013. This warranty applies to all Products purchased after this date.

IOM-WR-Radiant_Thermostat 1612

USA: Tel: (800) 276-2419 • Fax: (417) 864-8161 • WattsRadiant.com

Canada: Tel: (905) 332-4090 • Fax: (905) 332-7068 • Watts.ca

Latin America: Tel: (52) 81-1001-8600 • Fax: (52) 81-8000-7091 • WattsRadiant.com

© 2016 Watts Radiant

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