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519_D
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 Slab Sensor 079 is
included to measure floor temperature
to protect the floor from overheating and
enhance comfort. This easy to install
thermostat is a direct replacement for
the tekmar Thermostat 509.
03/13
Zoning
Replaces: New
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 Slab Sensor 079
•
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Table of Contents
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Getting Started ...............................2
Installation ...........................................2
Preparation .....................................2
Removing The Thermostat Base ....3
Mounting The Thermostat...............4
Slab Sensor 079 Installation ...........5
Slab Sensor 079 Wiring ..................6
Slab Sensor 079 Testing .................7
Temperature vs. Resistance Table ....7
Thermostat Wiring ..........................9
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
Getting Started
Congratulations on the purchase of your new tekmar® 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.
Installation
Caution
Improper installation and operation of this control could result in damage to the
equipment and possibly even personal injury or death. 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.
Preparation
Tools Required
tekmar or jeweller screwdriver
•
Phillips head screwdriver
•
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Wire Stripper•
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-------------------------------------------------
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.
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Mounting The Thermostat
Stud
3 1/4”
(83 mm)
Gang
Box
Thermostat
Front
Adapter Plate 012
Thermostat
Base
If a single gang box is used:
Adapter Plate 012 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
Thermostat
Front
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.
•
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Slab 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 079 slab 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
Thin-set
Electric
Cables
Tiles
free operation. The sensor should be located
mid way between the heating elements to ensure
a proper temperature reading.
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 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)
Hardwood
Subfloor
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.
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”
Hardwood
(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
Subfloor
between the heating elements to ensure a proper
temperature reading.
NOTE: If it is not practical to cut a groove in the
surface covering, follow the installation method
used for thin floor coverings.
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Retrofit Installations
-------------------------------------------------
-------------------------------------------------
Tile Floor Coverings
If a Slab 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 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
Subfloor
Tiles
Thin-set
trouble free operation. Remove the appropriate
grout line and place the sensor and wire in the
floor. Re-grout the area.
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
Subfloor
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 sandwich the
sensor between the insulation and the subfloor. Use
a suitable fastening method to affix the insulation to
the subfloor.
Slab Sensor 079 Wiring
Caution: 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.
The Slab 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.
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Slab Sensor 079 Testing
A good quality test meter capable of measuring up to 5,000 k (1 k = 1000) 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 room temperature using the thermometer. Disconnect the Sen and
Com wires from the thermostat. Using an electrical meter, measure the resistance of the
Sen 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 Sen
and Com wires to the thermostat.
Do not apply voltage to the temperature sensor terminals at any time as damage to
the sensor may result.
Temperature vs. Resistance Table
Temperature Resistance
°F °C
-50 -46 490,813
-45 -43 405,710
-40 -40 336,606
-35 -37 280,279
-30 -34 234,196
-25 -32 196,358
-20 -29 165,180
-15 -26 139,402
-10 -23 118,018
-5 -21 100,221
0 -18 85,362
5-15 72,918
10 -12 62,465
15 -9 53,658
20 -7 46,218
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Temperature Resistance
°F °C
25 -4 39,913
30 -1 34,558
35 2 29,996
40 4 26,099
45 7 22,763
50 10 19,900
55 13 17,436
60 16 15,311
65 18 13,474
70 21 11,883
75 24 10,501
80 27 9,299
85 29 8,250
90 32 7,334
95 35 6,532
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Temperature vs. Resistance Table - Continued
Temperature Resistance
°F °C
100 38 5,828
105 41 5,210
110 43 4,665
115 4 6 4 ,18 4
120 49 3,760
125 52 3,383
130 54 3,050
135 57 2,754
140 60 2,490
145 63 2,255
150 66 2,045
155 68 1,857
160 71 1,6
89
Temperature Resistance
°F °C
165 74 1,538
170 77 1,403
175 79 1,281
180 82 1,172
185 85 1,073
190 88 983
195 91 903
200 93 829
205 96 763
210 99 703
215 102 648
220 104 598
225 107 553
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Thermostat Wiring
----------------------------------------------------------
---------------------------------------------
-----------------------------------------------------------
Zone Valve
----------------------------------------------------------
Zone
Valve
RC
24 V (ac)
Tra ns fo rm er
009
LN
Wiring Center 315 or 316
R
tN4 C W
Wiring Center
315 or 316
Install field
jumper wire
R to Rh
No Power
C
R Rh W1 S1 Com
C
R Rh W1 S1 Com
No Power
518
519
---------------------------------------------
Slab Sensor 079
Install field
jumper wire
R to Rh
518
518
519
C
C
C
No Power
No Power
No Power
R Rh W1 S1 Com
R Rh W1 S1 Com
R Rh W1 S1 Com
Slab Sensor 079
Relay 003
-----------------------------------------------------------
Relay 003
2
3
1
4
8
5
6
7
R
C
LNG
115 V (ac)
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Tran sf or mer
009
Install field
jumper wire
R to Rh
518
519
C
R Rh W1 S1 Com
C
R Rh W1 S1 Com
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No Power
No Power
Slab Sensor 079
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-----------------------------------------------------
---------------------------------------------------
----------------------------------
Thermostat Wiring
Switching Relay
-----------------------------------------------------
Slab Sensor 079
No Power
C
R Rh W1 S1 Com
C
R Rh W1 S1 Com
No Power
24 V
Com
Class 2
Transformer
RW
RW
Zone 1 Zone 2 Zone 3
Switching Relay
Zone 1 Zone 2 Zone 3
HNXX HNHN NH
RW
519
518
LN
Pump
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 tekmar sales
representative for assistance.
If the thermostat display intially powers on but later shuts off intermittantly, there
may be a short circuit from the W 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 W 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 W and C wire have voltage, check the zone valve, wiring center, relay or pump
to determine if the heat device is operating correctly.
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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.
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MIN
The floor is at or below the
floor minimum temperature.
MAX
The floor has reached the
floor maximum temperature.
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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
setting, then press the button to select Mode Heat. The thermostat will resume
heating at the last previously set temperature.
button to navigate to the Mode
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
------------------------------------------------
----------------------------------------------
-------------------------------------------
Suggested maximum for all floor
types other than wood.
80 to 85°F (26 to 30°C)
Feels warm to the touch
70°F (21°C)
Feels cool to the touch
40 to 45°F (5 to 7°C)
Feels cold to the touch
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Bathrooms and kitchens. Suggested
maximum for wood floors.
Rooms with large windows preventing
under heating in the evening.
Freeze protection for garages.
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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
F
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)
Default: 72°F (22.0°C)
TYPE
Device Type number. Hold the
button to view the
software version.
ESCAPE
Release the
and buttons to return to the home screen.
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
Default: OFF
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.
Range: ON or OFF
Room
Default: ON
SET FLOOR MAXIMUM
Set the floor maximum temperature in order to protect the
floor covering. Suggested settings: Tile = 90°F (32°C),
MAX
F
Wood Floor = 85°F (29°C)
Range: 40 to 122°F (4.5 to 50.0°C), OFF
Default: 85°F (29.5°C)
ESCAPE
Release the
and buttons to return to the home screen.
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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
Room
This error cannot be field repaired. Contact your wholesaler or tekmar
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 tekmar
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.
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Frequently Asked Questions
Symptom Look for... 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.
Display powering
on and off.
Thermostat does
not heat.
Measure voltage at
wiring terminals R
and C.
Mode Off
Technical Data
Radiant Thermostat 519 One Stage Heat
Literature 519_C, 519_D, 519_Q, 519_U
Control Microprocessor control. This is not a safety (limit) control
Packaged weight 0.6 lb. (290 g)
Dimensions 3-11/16” H x 3” W x 15/16” D (94 x 76 x 24 mm)
Enclosure White PVC plastic, NEMA Type 1
Approvals Meets Class B: ICES & FCC Part 15
Ambient conditions
Power supply
Relay 30 V (ac/dc) 2 A, Class 2 circuits
Sensor
– Included Slab Sensor 079
– Optional tekmar type # 070, 072, 073, 076, 077, 079, 084
Indoor use only, 32 to 122°F (0 to 50°C), RH ≤90% non-condensing
10 to 30 V (ac/dc), 50/60 Hz, 1.8 VA standby,
56 VA max fully loaded, Class 2
NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892
Slab Sensor 079 10’ (3 m) wire
Dimensions
Enclosure
Approvals CSA C US
Operating range -58 to 140°F (-50 to 60°C)
Sensor
A Watts Water Technologies Company
3/16” OD x 1-1/2” (5 OD x 38 mm)
316 stainless steel, 10’ (3 m) 24 AWG, 300 volt PVC insulated Zipcord
NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892
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Limited Warranty and Product Return Procedure
Limited Warranty The liability of tekmar under this warranty is limited. The Purchaser, by taking receipt
of any tekmar product (“Product”), acknowledges the terms of the Limited Warranty in effect at the time
of such Product sale and acknowledges that it has read and understands same.
The tekmar Limited Warranty to the Purchaser on the Products sold hereunder is a manufacturer’s passthrough warranty which the Purchaser is authorized to pass through to its customers. Under the Limited
Warranty, each tekmar Product is warranted against defects in workmanship and materials if the Product
is installed and used in compliance with tekmar’s instructions, ordinary wear and tear excepted. The passthrough warranty period is for a period of twenty-four (24) months from the production date if the Product is
not installed during that period, or twelve (12) months from the documented date of installation if installed
within twenty-four (24) months from the production date.
The liability of tekmar under the Limited Warranty shall be limited to, at tekmar’s sole discretion: the cost of parts
and labor provided by tekmar to repair defects in materials and / or workmanship of the defective product; or to
the exchange of the defective product for a warranty replacement product; or to the granting of credit limited to
the original cost of the defective product, and such repair, exchange or credit shall be the sole remedy available
from tekmar, and, without limiting the foregoing in any way, tekmar is not responsible, in contract, tort or strict
product liability, for any other losses, costs, expenses, inconveniences, or damages, whether direct, indirect,
special, secondary, incidental or consequential, arising from ownership or use of the product, or from defects in
workmanship or materials, including any liability for fundamental breach of contract.
The pass-through Limited Warranty applies only to those defective Products returned to tekmar during the warranty period. This Limited Warranty does not cover the cost of the parts or labor to remove or transport the defective Product, or to reinstall the repaired or replacement Product, all such costs and expenses being subject to
Purchaser’s agreement and warranty with its customers.
Any representations or warranties about the Products made by Purchaser to its customers which are different
from or in excess of the tekmar Limited Warranty are the Purchaser’s sole responsibility and obligation. Purchaser
shall indemnify and hold tekmar harmless from and against any and all claims, liabilities and damages of any
kind or nature which arise out of or are related to any such representations or warranties by Purchaser to its
customers.
The pass-through Limited Warranty does not apply if the returned Product has been damaged by negligence by
persons other than tekmar, accident, fire, Act of God, abuse or misuse; or has been damaged by modifications,
alterations or attachments made subsequent to purchase which have not been authorized by tekmar; or if the
Product was not installed in compliance with tekmar’s instructions and / or the local codes and ordinances; or if
due to defective installation of the Product; or if the Product was not used in compliance with tekmar’s instructions.
THIS WARRANT Y IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IM PLIED, WHICH THE G OVERNING
LAW ALLOWS PARTIES TO CONTRACTUALLY EXCLUDE, INCLUDING , WITHOUT LIMITATION, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, DURABILITY OR DESCRIPTION OF THE PRODUCT, ITS NON-INFRINGEMENT OF ANY RELEVANT PATENTS OR TRADEMARKS, AND
ITS COM PLIA NCE WIT H OR N ON-VIO LATION OF AN Y APPLICABL E ENVIRON MENTAL, HEALTH OR SAFE TY
LEGISLATION; THE TERM OF ANY OTHER WARRANTY NOT HEREBY CONTRACTUALLY EXCLUDED IS LIMITED SUCH THAT IT SHALL NOT EXTEND BEYOND TWENTY-FOUR (24) MONTHS FROM THE PRODUCTION
DATE, TO THE EXTENT THAT SUCH LIMITATION IS ALLOWED BY THE GOVERNING LAW.
Product Warranty Return Procedure All Products that are believed to have defects in workmanship or materials must be returned, together with a written description of the defect, to the tekmar Representative assigned to
the territory in which such Product is located. If tekmar receives an inquiry from someone other than a tekmar
Representative, including an inquiry from Purchaser (if not a tekmar Representative) or Purchaser’s customers,
regarding a potential warranty claim, tekmar’s sole obligation shall be to provide the address and other contact
information regarding the appropriate Representative.
Product design, software and literature are Copyright ©2013 by tekmar Control Systems Ltd.,
A Watts Water Technologies Company. Head Offi ce: 5100 Silver Star Road, Vernon, B.C.
Canada V1B 3K4, 250-545-7749, Fax. 250-545-0650
All specifications are subject
to change without notice
Web Site
: www.tekmarControls.com
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