Tekmar 510, 511 Data Brochure

1 of 16 © 2012 D 510 - 02/12

- Data Brochure

Programmable Thermostat 510 and 511

D 510

02/12

Replaces: 09/09

Displays the

current

menu

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

Table of Contents

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

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

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

Sequence of Operation................... pg 4

Installation - Slab Sensor 079 ...... pg 5-7

Installation - Thermostats ............pg 8-9

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

Menus ....................................... pg 11-13

View Menu ...............................pg 11

Adjust Menu ......................pg 11-13

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

This brochure is for Thermostats 510 and 511 (with sensor). The section on the 079 slab
sensor installation is for the 511 only!

© 2012 D 510 - 02/12 2 of 16

EARLY START ( )

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.

Early Start

Displays when the thermostat
is in early start.

General

CYCLES PER HOUR (HEAT CYCLE)

The thermostat operation is based on cycles per hour. The number of cycles per hour is
adjustable through the HEAT CYCLE settings 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 heat, the ON time is reduced.

In order to prevent short cycling of the heating relay(s), the thermostat ensures that the
relay(s) remains on or off for a minimum amount of time.

An Auto Cycle 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.

The early start function ensures that the
zone is up to the proper temperature at the
beginning of each period. The thermostat
learns the recovery rate over multiple setback
events in order to determine the proper lead
time for the zone. If both an air sensor and
a slab sensor are used, the lead time is the
greater of the air sensor’s or the slab sensor’s
requirements.

⇐ Cycle Length ⇒

Time

offoff

off

on onon

Cycles Per Hour

Occupied

70°F (21°C)

62°F (17°C)

70°F (21°C)

62°F (17°C)

UnOccupied

Early Start OFF

Early Start ON

NOTE: The Early Start feature occurs when the schedule changes from a low temperature
to a higher temperature.

AUXILIARY SENSORS

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 up to two separate
sensors. These sensors can be either indoor sensors, slab sensors, a remote sensor, or
an outdoor sensor.

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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 times for the relay in the thermostat. Either one or both of the auxiliary sensor inputs
can be configured for indoor sensors. This setting is made through the Adjust menu of the
thermostat. If more than one sensor, either the built-in sensor or an auxiliary sensor set as
an indoor sensor, is being used to measure the zone temperature, the temperature of the
active sensors is 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. If more than one slab sensor is used, the
slab temperatures are averaged by the thermostat.

Remote Sensor

A single remote sensor can be connected to the thermostat. The temperature measured
by a remote sensor does not affect the on time of the relay and is only used for display
purposes.

Outdoor Sensor

A single 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

The tekmar Programmable 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.

The 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.

The User access level allows the end user to
adjust the time, temperatures and schedules
used by the thermostat.

Programmable Thermostat 510

One Stage Heat

1
R

2
C

3

Com

4

S1

5

S2

6

7

Heat

No Pow

er

C

US

Made in Canada

Meets Class B:

Canadian ICES

FCC Part 15

938-01

510

Switch Settings:

Installer/User

Power: 24 V ± 10%

60 Hz 3 VA

Relay: 24

V (ac) 2 A

Class 2

Dip Switch

© 2012 D 510 - 02/12 4 of 16

Sequence of Operation

ONE STAGE HEAT

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.

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 510 Includes: •• One Programmable Thermostat 510 •• Data Brochure D 510 •• User
Brochure U 510

Type 511 Includes: •• One Programmable Thermostat 510 •• One Slab Sensor 079 •• Data
Brochure D 510 •• User Brochure U 510

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Installation - Slab Sensor 079

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.

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))

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.

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