tekmar 507 Installation

- Data Brochure

D 507

Thermostat 507

05/10

Table of Contents

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

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

General ........................................ p g 2

Sequence of Operation ............... pg 2

Installation ................................... pg 3

Wiring Examples.......................pg 4-6

User Interface .............................. pg 6

Menus .......................................... p g 7

View Menu ................................ pg 7

Adjust Menu ............................ pg 7

Error Messages .......................... pg 7

Warranty ...................................... pg 8

Display / Keypad Operation

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.

Displays the

current

Displays an abbreviated

name of the selected item

Displays the current value

Displays the current

status of the

thermostat's inputs,

outputs and operation

Selects Menus, Items

and adjusts settings

of the selected item

Display Symbols

Warning

Displays when an error exists.

Heat One

Displays when the heat contact is on.

General

CYCLES PER HOUR

The thermostat operation is based on cycles per hour. 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.

In order to prevent short cycling of the heating relay,

Cycles Per Hour

the thermostat ensures that the relay remains on or off for a minimum amount of time.

The 507 Thermostat has an Auto Cycle. This allows the thermostat to determine the best number of

offoff

⇐ Cycle Length ⇒

Time

off

on onon

cycles per hour that balances both temperature swings and equipment cycles.

Sequence of Operation

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 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).

Installation

•

STEP ONE

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 507 Includes:

GETTING READY

• One Thermostat 507 •• Data Brochure D 507 • User Brochure U 507

STEP TWO

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.

STEP THREE

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.

Remove cover

Push tab

enu

#6 1” screws

Item

STEP FOUR

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

ROUGH IN WIRING

ensure proper operation.

Run wires from the heating device to the thermostat.

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