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 © 2010 

  D 508 - 05/10

- Data Brochure

Thermostat 508

D 508

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 ....................................pg 4-5
Wiring Examples .......................... pg 6-7
User Interface ................................. pg 8

Menus ........................................ pg 8-10

 View 

Menu 

................................ pg 

8

  Adjust Menu  ............................ pg 9
  Schedule Menu ...................... pg 10

Error Messages  ........................... pg 10
Warranty ....................................... pg 12

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

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

AWAY

Summary of Contents for D 508

Page 1: ...he 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 navigat...

Page 2: ...th 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 h...

Page 3: ...er 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...

Page 4: ...a freeze protection is enabled that allows the Heat relay to be operated to keep the zone above 35 F 2 C STEP THREE MOUNTING THE BASE The thermostat should be installed on an interior wall of the des...

Page 5: ...ected 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 avail...

Page 6: ...d Switch C Input Power R R 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...

Page 7: ...Sensor 24 V ac Class 2 Transformer 115 V ac Unpowered Relay Wiring to Switching Relay Auxiliary Sensor Zone Pump L N 115 V ac W T T R NO POWER 2 Sensor 1 24 V 10 50 60 Hz 1 5 VA 24 V ac 2 A Class 2 I...

Page 8: ...ing at Slab Minimum MENU BUTTON The menus display in the Menu Field at the left of the LCD Three menus are available View Adjust Schd Schedule To select a menu press and release the Menu button ITEM B...

Page 9: ...ilable in the Installer access level Must have an active slab sensor 34 to 122 F OFF 1 0 to 50 0 C OFF SENSOR Selects the type of auxiliary sensor present This item is only available in the Installer...

Page 10: ...hould be replaced or returned for repair ROOM OPEN The thermostat s internal air sensor is open circuit This cannot be repaired in the field Either turn off the internal sensor and use an auxiliary se...

Page 11: ...11 of 12 2010 D508 05 10 Notes...

Page 12: ...uct 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...

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