Tekmar 509 Manuel utilisateur

- Data Brochure

Thermostat 508 and 509

D 508

04/12

Replaces: 05/10

Table of Contents

Display / Keypad Operation............ pg 1

Display Symbols ............................. pg 2

General ........................................ pg 2-3

Sequence of Operation................pg 3-4

Installation - Slab Sensor 079......pg 4-6

Installation - Thermostats ............ pg 7-8

Wiring Examples........................ pg 9-10

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

Menus .......................................pg 12-14

View Menu.............................. pg 12

Adjust Menu .......................... pg 13

Schedule Menu ...................... pg 14

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

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

Warranty ....................................... pg 16

The thermostat’s display has four distinct fields. These fields are the Menu field, the Item

field, the Number field and the Status field. The four buttons on the face of the thermostat are

used to navigate through the menus and items to view and / or adjust the desired settings.

Display / Keypad Operation

Displays the

current

Displays an abbreviated

name of the selected item

Displays the current value

of the selected item

Selects Menus, Items

and adjusts settings

Displays the current

status of the

thermostat's inputs,

outputs and operation

AWAY

This brochure is for Thermostats 508 and 509 (with sensor). The section on the 079 slab

sensor installation is for the 509 only!

CYCLES PER HOUR

The thermostat operation is based on cycles per hour. The number of cycles per hour is adjustable

through the HEAT CYC setting in the Adjust menu. During each cycle that heating is required,

the thermostat turns on the Heat relay for a calculated amount of time. This amount of time is

the “ON time”. The ON time is calculated based on the requirements of the zone. If the zone

requires more heating, the ON time is increased. If the zone requires less heating, the ON time

is reduced.

General

Display Symbols

Warning

Displays when an error exists.

Access Level

Displays when in the user

access level.

Heat One

Displays when the heat contact

is on.

In order to prevent short cycling of the heating relay, the

thermostat ensures that the relay remains on or off for

a minimum amount of time.

An AUTO CYC setting is available for the heating cycle.

This setting allows the thermostat to determine the

best number of cycles per hour that balances both

temperature swings and equipment cycles.

AUXILIARY SENSOR

The thermostat has a single built-in sensor to measure air temperature at the

thermostat. In addition to the built-in sensor, the thermostat has terminals to connect

one auxiliary sensor. This sensor can be either an indoor sensor, a slab sensor, or

an outdoor sensor.

Indoor Sensor

An indoor sensor is used to measure the air temperature in the zone that the thermostat

is controlling. The temperature being read by the indoor sensor is used in the calculations

of the ON time for the relay in the thermostat. This setting is made through the Adjust

menu of the thermostat. If the built-in sensor is set to ON and the auxiliary sensor is set

to Indoor, the temperatures of the sensors are averaged and used to calculate the ON

time of the relay.

Slab Sensor

A slab sensor is used to measure the slab temperature in the zone that the thermostat

is controlling. The temperature being read by the slab sensor is used in the calculations

of the ON time for the Heat relay and allows the thermostat to operate the slab between

the slab minimum and slab maximum settings.

⇐Cycle Length ⇒

Time

offoff off

on onon

Cycles Per Hour

Outdoor Sensor

An outdoor sensor can be connected to the thermostat. The temperature measured by

an outdoor sensor does not affect the ON time of the relay and is only used for display

purposes.

ACCESS LEVELS

Sequence of Operation

AIR SENSOR(S) ONLY OPERATION

When operating with only an air sensor, the ON time for the Heat relay is calculated to

satisfy the requirements of the air sensor.

SLAB SENSOR ONLY OPERATION

When operating with only a slab sensor, the ON time for the Heat relay is calculated to

satisfy the requirements of the slab sensor. The thermostat operates to maintain the slab

at the minimum slab temperature setting.

NOTE: Operating with only a slab sensor can lead to either overheating or underheating

of the space.

AIR AND SLAB SENSOR OPERATION

When operating with both air and slab sensors, the thermostat calculates an ON time for the

Heat relay to satisfy the slab sensor’s requirements and an ON time to satisfy the air sensor’s

requirements. The Heat relay operates for the longer of these two ON times.

During light heating loads, overheating can occur due to the minimum slab temperature

requirements.

During heavy heating loads, the maximum slab temperature setting limits the ON time of

the Heat relay. In this situation, underheating can occur.

The 508 thermostat has two access levels.

These access levels restrict the number of items

available in the menus of the thermostat. The

two access levels are User and Installer. This

selection is made using the DIP switch located

on the circuit board inside the thermostat.

Installer access level - allows the installer

to adjust all of the settings in the thermostat

including those required to match the thermostat

to the mechanical system and the devices

used.

User access level - allows the end user

to adjust the temperatures used by the

thermostat.

POWER

Sensor

24 V ±10% 50/60 Hz 1.5 VA.

24 V (ac) 2 A Class 2

Installer

Access level

Not used

Power:

Relay:

For 3 wires,

install jumper

R to Rh

944-02

Thermostat 508

One Stage Heat

508

4653

RhRCW

User

Meets Class B:

Canadian ICES

FCC Part 15

Made in

Canada

Apr 2010

Lot 1234

24 V

Dip Switch

Set to User access level once installation and settings have been completed.

Note: DIP switch 2 is not used.

MODE

Heat In the heat mode, the Heat relay is operated to satisfy the temperature

requirement of the zone.

Off In the OFF mode, the Heat relay is not operated.

NOTE: If an air or slab sensor is active in the OFF mode, a freeze protection is enabled

that allows the Heat relay to be operated to keep the zone above 35°F (2°C).

GETTING READY

Check the contents of this package. If any of the contents are missing or damaged, please

contact your wholesaler or tekmar sales representative for assistance.

Type 508 Includes:

•

• One Thermostat 508

•

Data Brochure D 508

•

• User Brochure U 508

Type 509 Includes:

•

• One Thermostat 508

•

One 079 Slab Sensor

•

• Data Brochure D 508

User Brochure U 508

Installation - Slab Sensor 079

STEP ONE

INSTALLING THE SENSOR

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

(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.

Tiles

Thin-set

Electric

Cables

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.

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) deep by 1-3/4”

Hardwood

Subfloor

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

SLAB SENSOR 079

The tekmar Slab Sensor 079 has a stainless steel sleeve which is designed for use in

concrete, thin-set or grout. The 079 is supplied with 10’ (3 m) of 2 conductor zipcord.

Hardwood

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.

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

Tiles

Thin-set

Subfloor

NOTE: If it is not practical to cut a groove in the surface covering, follow the installation

method used for thin floor coverings.

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 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 sandwich the sensor between

the insulation and the subfloor. Use a suitable

fastening method to affix the insulation to the

subfloor.

STEP TWO

WIRING AND TESTING THE SENSOR

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.

Temperature Resistance Temperature Resistance Temperature Resistance Temperature Resistance

°F °C °F °C °F °C °F °C 

-50 -46 490,813 20 -7 46,218 90 32 7,334 160 71 1,689

-45 -43 405,710 25 -4 39,913 95 35 6,532 165 74 1,538

-40 -40 336,606 30 -1 34,558 100 38 5,828 170 77 1,403

-35 -37 280,279 35 2 29,996 105 41 5,210 175 79 1,281

-30 -34 234,196 40 4 26,099 110 43 4,665 180 82 1,172

-25 -32 196,358 45 7 22,763 115 46 4,184 185 85 1,073

-20 -29 165,180 50 10 19,900 120 49 3,760 190 88 983

-15 -26 139,402 55 13 17,436 125 52 3,383 195 91 903

-10 -23 118,018 60 16 15,311 130 54 3,050 200 93 829

-5 -21 100,221 65 18 13,474 135 57 2,754 205 96 763

0 -18 85,362 70 21 11,883 140 60 2,490 210 99 703

5 -15 72,918 75 24 10,501 145 63 2,255 215 102 648

10 -12 62,465 80 27 9,299 150 66 2,045 220 104 598

15 -9 53,658 85 29 8,250 155 68 1,857 225 107 553

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 temperature using the thermometer and then measure the resistance of the sensor at the control. The wires from the

sensor must not be connected to the control while the test is performed. Using the chart on the following page, estimate the temperature

measured by the sensor. The sensor 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.

Do not apply voltage to a sensor at any time as damage to the sensor may result.

Sensor Testing Instructions

#6 1” screws

Item

Remove cover

Push tab

STEP ONE

REMOVING THE FRONT COVER

Place a screwdriver or similar object into the small slot located in the top of the thermostat.

Push the screwdriver against the plastic tab and pull the top of the front cover so that it pivots

around the bottom edge of the base.

Installation - Thermostat

STEP TWO

MOUNTING THE BASE

The thermostat should be installed on an interior wall of the desired zone approximately 5’ (1.5

m) above the floor. Do not mount the thermostat in a location that may be affected by localized

heat sources or cold drafts. It may be necessary to install a draft barrier behind the thermostat to

prevent air from blowing through the wiring hole and affecting the thermostat’s built-in sensor.

Mount the base directly to the wall using two #6

1” screws. The screws are inserted through the

mounting holes and must be securely fastened

to the wall. If possible, at least one of the screws

should enter a wall stud or similar surface. If the

thermostat is to be mounted to a 2” x 4” electrical

box, order an Adaptor Plate 007. This plate mounts

to the electrical box and the thermostat mounts to

the plate. Ensure that the electrical box does not

provide cold air to the thermostat.

NOTE: If the 508 is to be used for remote sensing (i.e. The built-in air sensor is disabled

and an indoor sensor is being used.) Mount the thermostat in the desired location in an

appropriate manner.

STEP THREE

ROUGH IN WIRING

•

18 AWG or similar wire is recommended for all 24 V (ac) wiring.

•

All wires are to be stripped to 1/4” (6 mm) to ensure proper connection to the control.

•

Run wires from the 24 V (ac) power to the thermostat. Use a clean power source to

ensure proper installation.

•

Run wires from the heating device to the thermostat.

STEP FOUR WIRING THE THERMOSTAT

(Refer to the examples on the following page.)

24 V (ac) Power

Connect the 24 V (ac) power to the R and C terminals of the thermostat. This connection

provides power to the microprocessor and display of the thermostat.

Auxiliary Sensor

Either an indoor, slab, or outdoor sensor may be connected to the auxiliary sensor input.

Connect the two wires from the auxiliary sensor to the Sensor terminals.

Heat Relay (Rh – W)

The Heat Relay Rh – W terminals are an isolated output. There is no power available

on these terminals from the thermostat. These terminals are to be used as a switch for

a 24 V (ac) circuit. This circuit can operate a low current 24 V (ac) device directly or an

external relay to enable a line voltage or high current device.

STEP FIVE

INSTALLING THE FRONT COVER

Align the hinges on the bottom of the front cover with the bottom of the thermostat mounting

base. Pivot the front cover around the bottom hinges and push the top against the mounting

base until it snaps firmly in place.

Pivot front

cover around

bottom hinges

Align hinges

on bottom

of front cover

Item

Wiring Examples

POWER

Sensor

24 V ±10% 50/60 Hz 1.5 VA.

24 V (ac) 2 A Class 2

Installer

Access level

Not used

Power:

Relay:

For 3 wires,

install jumper

R to Rh

944-02

Thermostat 508

One Stage Heat

508

4653

RhRCW

User

Meets Class B:

Canadian ICES

FCC Part 15

Made in

Canada

Apr 2010

Lot 1234

24 V

N115 V (ac)

24 V (ac)

Class 2

Transformer

Power

Zone 1

Zone 2

Zone 3

Zone 4

End Switch

Zone 2

WtN4 RC

Zone 3

WtN4 RC

Zone 4

WtN4 R

tN4 Wiring Center 316

Four Zone Pumps

WtN4CtN4C

Zone 1 Expansion End Switch

Input Power

H8002A

X X

Input Power: 24 V (ac) ±10% 60 Hz

11 VA Class 2

End Switch: 24 V (ac) 2 A

Pump Relays: 115 V (ac) 5 A

Zone Power: 115 V (ac) 12 A

Made in Canada

tektra 1031-01

Use at least 167°F (75°C) conductors

Black

Red

Auxiliary Sensor

Zone

Valve NO

POWER

Sensor

24 V ±10% 50/60 Hz 1.5 VA.

24 V (ac) 2 A Class 2

Installer

Access level

Not used

Power:

Relay:

For 3 wires,

install jumper

R to Rh

944-02

Thermostat 508

One Stage Heat

508

4653

RhRCW

User

Meets Class B:

Canadian ICES

FCC Part 15

Made in

Canada

Apr 2010

Lot 1234

24 V

Auxiliary Sensor

115 V (ac) 24 V (ac)

Class 2

Transformer

Wiring to 24 V (ac) Zone Valve

Wiring to a tekmar Wiring Center 315 or 316

115 V (ac)

24 V (ac)

Sensor Wires

115 V (ac)

24 V (ac)

Sensor Wires

Wiring to Unpowered 24 V (ac) Relay

Zone Pump

POWER

Sensor

24 V ±10% 50/60 Hz 1.5 VA.

24 V (ac) 2 A Class 2

Installer

Access level

Not used

Power:

Relay:

For 3 wires,

install jumper

R to Rh

944-02

Thermostat 508

One Stage Heat

508

4653

RhRCW

User

Meets Class B:

Canadian ICES

FCC Part 15

Made in

Canada

Apr 2010

Lot 1234

24 V

Auxiliary Sensor

24 V (ac)

Class 2

Transformer

115 V (ac)

Unpowered

Relay

Wiring to Switching Relay

Auxiliary Sensor

Zone Pump

115 V (ac)

(T)(T)

POWER

Sensor

24 V ±10% 50/60 Hz 1.5 VA.

24 V (ac) 2 A Class 2

Installer

Access level

Not used

Power:

Relay:

For 3 wires,

install jumper

R to Rh

944-02

Thermostat 508

One Stage Heat

508

4653

RhRCW

User

Meets Class B:

Canadian ICES

FCC Part 15

Made in

Canada

Apr 2010

Lot 1234

24 V

(T)(T)

HNXX HNHN NH

Com Switching Relay

Zone 1 Zone 2 Zone 3

Class 2

Transformer

(T)(T)

115 V (ac)

24 V (ac)

Sensor Wires

115 V (ac)

24 V (ac)

Sensor Wires

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